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Romain Guye4d01122010-06-16 18:44:05 -07001/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
Romain Guy85bf02f2010-06-22 13:11:24 -070017#define LOG_TAG "OpenGLRenderer"
Romain Guye4d01122010-06-16 18:44:05 -070018
19#include <stdlib.h>
20#include <stdint.h>
21#include <sys/types.h>
22
Romain Guy5cbbce52010-06-27 22:59:20 -070023#include <SkCanvas.h>
Chris Craik98d608d2014-07-17 12:25:11 -070024#include <SkColor.h>
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -040025#include <SkShader.h>
Romain Guy694b5192010-07-21 21:33:20 -070026#include <SkTypeface.h>
Romain Guy5cbbce52010-06-27 22:59:20 -070027
Romain Guye4d01122010-06-16 18:44:05 -070028#include <utils/Log.h>
Romain Guye2d345e2010-09-24 18:39:22 -070029#include <utils/StopWatch.h>
Romain Guye4d01122010-06-16 18:44:05 -070030
Romain Guy08aa2cb2011-03-17 11:06:57 -070031#include <private/hwui/DrawGlInfo.h>
32
Romain Guy5b3b3522010-10-27 18:57:51 -070033#include <ui/Rect.h>
34
Romain Guy85bf02f2010-06-22 13:11:24 -070035#include "OpenGLRenderer.h"
Chris Craikc3566d02013-02-04 16:16:33 -080036#include "DeferredDisplayList.h"
Romain Guy0fe478e2010-11-08 12:08:41 -080037#include "DisplayListRenderer.h"
Romain Guy40543602013-06-12 15:31:28 -070038#include "Fence.h"
John Reck3b202512014-06-23 13:13:08 -070039#include "RenderState.h"
Chris Craik65cd6122012-12-10 17:56:27 -080040#include "PathTessellator.h"
Romain Guy87e2f7572012-09-24 11:37:12 -070041#include "Properties.h"
ztenghui55bfb4e2013-12-03 10:38:55 -080042#include "ShadowTessellator.h"
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -040043#include "SkiaShader.h"
Chris Craike4aa95e2014-05-08 13:57:05 -070044#include "utils/GLUtils.h"
Romain Guya957eea2010-12-08 18:34:42 -080045#include "Vector.h"
ztenghui55bfb4e2013-12-03 10:38:55 -080046#include "VertexBuffer.h"
Romain Guye4d01122010-06-16 18:44:05 -070047
Chris Craik62d307c2014-07-29 10:35:13 -070048#if DEBUG_DETAILED_EVENTS
49 #define EVENT_LOGD(...) eventMarkDEBUG(__VA_ARGS__)
50#else
51 #define EVENT_LOGD(...)
52#endif
53
Chris Craika8bea8e2014-09-24 11:29:43 -070054static void atraceFormatBegin(const char* fmt, ...) {
55 const int BUFFER_SIZE = 256;
56 va_list ap;
57 char buf[BUFFER_SIZE];
58
59 va_start(ap, fmt);
60 vsnprintf(buf, BUFFER_SIZE, fmt, ap);
61 va_end(ap);
62
63 ATRACE_BEGIN(buf);
64}
65
66#define ATRACE_FORMAT_BEGIN(fmt, ...) \
67 if (CC_UNLIKELY(ATRACE_ENABLED())) atraceFormatBegin(fmt, ##__VA_ARGS__)
68
Romain Guye4d01122010-06-16 18:44:05 -070069namespace android {
Romain Guy9d5316e2010-06-24 19:30:36 -070070namespace uirenderer {
71
Chris Craik678625242014-02-28 12:26:34 -080072static GLenum getFilter(const SkPaint* paint) {
73 if (!paint || paint->getFilterLevel() != SkPaint::kNone_FilterLevel) {
74 return GL_LINEAR;
75 }
76 return GL_NEAREST;
77}
Romain Guyd21b6e12011-11-30 20:21:23 -080078
Romain Guy9d5316e2010-06-24 19:30:36 -070079///////////////////////////////////////////////////////////////////////////////
80// Globals
81///////////////////////////////////////////////////////////////////////////////
82
Romain Guy889f8d12010-07-29 14:37:42 -070083/**
84 * Structure mapping Skia xfermodes to OpenGL blending factors.
85 */
86struct Blender {
87 SkXfermode::Mode mode;
88 GLenum src;
89 GLenum dst;
90}; // struct Blender
91
Romain Guy026c5e162010-06-28 17:12:22 -070092// In this array, the index of each Blender equals the value of the first
93// entry. For instance, gBlends[1] == gBlends[SkXfermode::kSrc_Mode]
94static const Blender gBlends[] = {
Romain Guy2ffefd42011-09-08 15:33:03 -070095 { SkXfermode::kClear_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA },
96 { SkXfermode::kSrc_Mode, GL_ONE, GL_ZERO },
97 { SkXfermode::kDst_Mode, GL_ZERO, GL_ONE },
98 { SkXfermode::kSrcOver_Mode, GL_ONE, GL_ONE_MINUS_SRC_ALPHA },
99 { SkXfermode::kDstOver_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE },
100 { SkXfermode::kSrcIn_Mode, GL_DST_ALPHA, GL_ZERO },
101 { SkXfermode::kDstIn_Mode, GL_ZERO, GL_SRC_ALPHA },
102 { SkXfermode::kSrcOut_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO },
103 { SkXfermode::kDstOut_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA },
104 { SkXfermode::kSrcATop_Mode, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA },
105 { SkXfermode::kDstATop_Mode, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA },
106 { SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA },
107 { SkXfermode::kPlus_Mode, GL_ONE, GL_ONE },
Derek Sollenbergerd81ec452013-02-04 15:42:26 -0500108 { SkXfermode::kModulate_Mode, GL_ZERO, GL_SRC_COLOR },
Romain Guy2ffefd42011-09-08 15:33:03 -0700109 { SkXfermode::kScreen_Mode, GL_ONE, GL_ONE_MINUS_SRC_COLOR }
Romain Guy026c5e162010-06-28 17:12:22 -0700110};
Romain Guye4d01122010-06-16 18:44:05 -0700111
Romain Guy87a76572010-09-13 18:11:21 -0700112// This array contains the swapped version of each SkXfermode. For instance
113// this array's SrcOver blending mode is actually DstOver. You can refer to
114// createLayer() for more information on the purpose of this array.
Romain Guyf607bdc2010-09-10 19:20:06 -0700115static const Blender gBlendsSwap[] = {
Romain Guy2ffefd42011-09-08 15:33:03 -0700116 { SkXfermode::kClear_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO },
117 { SkXfermode::kSrc_Mode, GL_ZERO, GL_ONE },
118 { SkXfermode::kDst_Mode, GL_ONE, GL_ZERO },
119 { SkXfermode::kSrcOver_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE },
120 { SkXfermode::kDstOver_Mode, GL_ONE, GL_ONE_MINUS_SRC_ALPHA },
121 { SkXfermode::kSrcIn_Mode, GL_ZERO, GL_SRC_ALPHA },
122 { SkXfermode::kDstIn_Mode, GL_DST_ALPHA, GL_ZERO },
123 { SkXfermode::kSrcOut_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA },
124 { SkXfermode::kDstOut_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO },
125 { SkXfermode::kSrcATop_Mode, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA },
126 { SkXfermode::kDstATop_Mode, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA },
127 { SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA },
128 { SkXfermode::kPlus_Mode, GL_ONE, GL_ONE },
Derek Sollenbergerd81ec452013-02-04 15:42:26 -0500129 { SkXfermode::kModulate_Mode, GL_DST_COLOR, GL_ZERO },
Romain Guy2ffefd42011-09-08 15:33:03 -0700130 { SkXfermode::kScreen_Mode, GL_ONE_MINUS_DST_COLOR, GL_ONE }
Romain Guyf607bdc2010-09-10 19:20:06 -0700131};
132
Romain Guyf6a11b82010-06-23 17:47:49 -0700133///////////////////////////////////////////////////////////////////////////////
Romain Guy448455f2013-07-22 13:57:50 -0700134// Functions
135///////////////////////////////////////////////////////////////////////////////
136
137template<typename T>
138static inline T min(T a, T b) {
139 return a < b ? a : b;
140}
141
142///////////////////////////////////////////////////////////////////////////////
Romain Guyf6a11b82010-06-23 17:47:49 -0700143// Constructors/destructor
144///////////////////////////////////////////////////////////////////////////////
145
John Reck3b202512014-06-23 13:13:08 -0700146OpenGLRenderer::OpenGLRenderer(RenderState& renderState)
Chris Craik058fc642014-07-23 18:19:28 -0700147 : mFrameStarted(false)
148 , mCaches(Caches::getInstance())
John Reck3b202512014-06-23 13:13:08 -0700149 , mExtensions(Extensions::getInstance())
Chris Craik058fc642014-07-23 18:19:28 -0700150 , mRenderState(renderState)
151 , mScissorOptimizationDisabled(false)
Chris Craik284b2432014-09-18 16:05:35 -0700152 , mSuppressTiling(false)
153 , mFirstFrameAfterResize(true)
John Reck1aa5d2d2014-07-24 13:38:28 -0700154 , mLightCenter((Vector3){FLT_MIN, FLT_MIN, FLT_MIN})
Chris Craik058fc642014-07-23 18:19:28 -0700155 , mLightRadius(FLT_MIN)
156 , mAmbientShadowAlpha(0)
157 , mSpotShadowAlpha(0) {
Chris Craik527a3aa2013-03-04 10:19:31 -0800158 // *set* draw modifiers to be 0
159 memset(&mDrawModifiers, 0, sizeof(mDrawModifiers));
Chris Craik16ecda52013-03-29 10:59:59 -0700160 mDrawModifiers.mOverrideLayerAlpha = 1.0f;
Romain Guy026c5e162010-06-28 17:12:22 -0700161
Romain Guyac670c02010-07-27 17:39:27 -0700162 memcpy(mMeshVertices, gMeshVertices, sizeof(gMeshVertices));
Romain Guye4d01122010-06-16 18:44:05 -0700163}
164
Romain Guy85bf02f2010-06-22 13:11:24 -0700165OpenGLRenderer::~OpenGLRenderer() {
Romain Guy29d89972010-09-22 16:10:57 -0700166 // The context has already been destroyed at this point, do not call
167 // GL APIs. All GL state should be kept in Caches.h
Romain Guye4d01122010-06-16 18:44:05 -0700168}
169
Romain Guy87e2f7572012-09-24 11:37:12 -0700170void OpenGLRenderer::initProperties() {
171 char property[PROPERTY_VALUE_MAX];
172 if (property_get(PROPERTY_DISABLE_SCISSOR_OPTIMIZATION, property, "false")) {
173 mScissorOptimizationDisabled = !strcasecmp(property, "true");
174 INIT_LOGD(" Scissor optimization %s",
175 mScissorOptimizationDisabled ? "disabled" : "enabled");
176 } else {
177 INIT_LOGD(" Scissor optimization enabled");
178 }
Romain Guy13631f32012-01-30 17:41:55 -0800179}
180
Chris Craik058fc642014-07-23 18:19:28 -0700181void OpenGLRenderer::initLight(const Vector3& lightCenter, float lightRadius,
182 uint8_t ambientShadowAlpha, uint8_t spotShadowAlpha) {
183 mLightCenter = lightCenter;
184 mLightRadius = lightRadius;
185 mAmbientShadowAlpha = ambientShadowAlpha;
186 mSpotShadowAlpha = spotShadowAlpha;
187}
188
Romain Guy13631f32012-01-30 17:41:55 -0800189///////////////////////////////////////////////////////////////////////////////
Romain Guyf6a11b82010-06-23 17:47:49 -0700190// Setup
191///////////////////////////////////////////////////////////////////////////////
192
Chris Craik797b95b2014-05-20 18:10:25 -0700193void OpenGLRenderer::onViewportInitialized() {
Romain Guy35643dd2012-09-18 15:40:58 -0700194 glDisable(GL_DITHER);
195 glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
196
197 glEnableVertexAttribArray(Program::kBindingPosition);
Chris Craik284b2432014-09-18 16:05:35 -0700198 mFirstFrameAfterResize = true;
Romain Guy35643dd2012-09-18 15:40:58 -0700199}
200
Romain Guy96885eb2013-03-26 15:05:58 -0700201void OpenGLRenderer::setupFrameState(float left, float top,
Romain Guyc3fedaf2013-01-29 17:26:25 -0800202 float right, float bottom, bool opaque) {
Romain Guyfe48f652010-11-11 15:36:56 -0800203 mCaches.clearGarbage();
Chris Craik69e5adf2014-08-14 13:34:01 -0700204 initializeSaveStack(left, top, right, bottom, mLightCenter);
Romain Guy96885eb2013-03-26 15:05:58 -0700205 mOpaque = opaque;
Chris Craik5f803622013-03-21 14:39:04 -0700206 mTilingClip.set(left, top, right, bottom);
Romain Guy96885eb2013-03-26 15:05:58 -0700207}
208
209status_t OpenGLRenderer::startFrame() {
210 if (mFrameStarted) return DrawGlInfo::kStatusDone;
211 mFrameStarted = true;
212
Romain Guy41308e22012-10-22 20:02:43 -0700213 mDirtyClip = true;
Romain Guyddf74372012-05-22 14:07:07 -0700214
Romain Guy96885eb2013-03-26 15:05:58 -0700215 discardFramebuffer(mTilingClip.left, mTilingClip.top, mTilingClip.right, mTilingClip.bottom);
Romain Guy11cb6422012-09-21 00:39:43 -0700216
John Reck3b202512014-06-23 13:13:08 -0700217 mRenderState.setViewport(getWidth(), getHeight());
Romain Guy7d7b5492011-01-24 16:33:45 -0800218
Romain Guy54c1a642012-09-27 17:55:46 -0700219 // Functors break the tiling extension in pretty spectacular ways
220 // This ensures we don't use tiling when a functor is going to be
221 // invoked during the frame
Chris Craik284b2432014-09-18 16:05:35 -0700222 mSuppressTiling = mCaches.hasRegisteredFunctors()
223 || mFirstFrameAfterResize;
224 mFirstFrameAfterResize = false;
Romain Guy54c1a642012-09-27 17:55:46 -0700225
Chris Craikd6b65f62014-01-01 14:45:21 -0800226 startTilingCurrentClip(true);
Romain Guy2b7028e2012-09-19 17:25:38 -0700227
Romain Guy7c450aa2012-09-21 19:15:00 -0700228 debugOverdraw(true, true);
229
Romain Guy96885eb2013-03-26 15:05:58 -0700230 return clear(mTilingClip.left, mTilingClip.top,
231 mTilingClip.right, mTilingClip.bottom, mOpaque);
232}
233
Romain Guy96885eb2013-03-26 15:05:58 -0700234status_t OpenGLRenderer::prepareDirty(float left, float top,
235 float right, float bottom, bool opaque) {
Romain Guy78dd96d2013-05-03 14:24:16 -0700236
Romain Guy96885eb2013-03-26 15:05:58 -0700237 setupFrameState(left, top, right, bottom, opaque);
238
239 // Layer renderers will start the frame immediately
240 // The framebuffer renderer will first defer the display list
241 // for each layer and wait until the first drawing command
242 // to start the frame
Chris Craikd6b65f62014-01-01 14:45:21 -0800243 if (currentSnapshot()->fbo == 0) {
Romain Guy96885eb2013-03-26 15:05:58 -0700244 syncState();
245 updateLayers();
246 } else {
247 return startFrame();
248 }
249
250 return DrawGlInfo::kStatusDone;
Romain Guy7c25aab2012-10-18 15:05:02 -0700251}
252
Romain Guydcfc8362013-01-03 13:08:57 -0800253void OpenGLRenderer::discardFramebuffer(float left, float top, float right, float bottom) {
254 // If we know that we are going to redraw the entire framebuffer,
255 // perform a discard to let the driver know we don't need to preserve
256 // the back buffer for this frame.
Romain Guy3bbacf22013-02-06 16:51:04 -0800257 if (mExtensions.hasDiscardFramebuffer() &&
Chris Craik14e51302013-12-30 15:32:54 -0800258 left <= 0.0f && top <= 0.0f && right >= getWidth() && bottom >= getHeight()) {
Romain Guyf1581982013-01-31 17:20:30 -0800259 const bool isFbo = getTargetFbo() == 0;
260 const GLenum attachments[] = {
261 isFbo ? (const GLenum) GL_COLOR_EXT : (const GLenum) GL_COLOR_ATTACHMENT0,
262 isFbo ? (const GLenum) GL_STENCIL_EXT : (const GLenum) GL_STENCIL_ATTACHMENT };
Romain Guydcfc8362013-01-03 13:08:57 -0800263 glDiscardFramebufferEXT(GL_FRAMEBUFFER, 1, attachments);
264 }
265}
266
Romain Guy7c25aab2012-10-18 15:05:02 -0700267status_t OpenGLRenderer::clear(float left, float top, float right, float bottom, bool opaque) {
John Reck23d307c2014-10-27 12:38:48 -0700268 if (!opaque) {
Romain Guy586cae32012-07-13 15:28:31 -0700269 mCaches.enableScissor();
Chris Craika64a2be2014-05-14 14:17:01 -0700270 mCaches.setScissor(left, getViewportHeight() - bottom, right - left, bottom - top);
Romain Guy6b7bd242010-10-06 19:49:23 -0700271 glClear(GL_COLOR_BUFFER_BIT);
Chet Haase44b2fe32012-06-06 19:03:58 -0700272 return DrawGlInfo::kStatusDrew;
Romain Guyddf74372012-05-22 14:07:07 -0700273 }
Chet Haase44b2fe32012-06-06 19:03:58 -0700274
Romain Guy7c25aab2012-10-18 15:05:02 -0700275 mCaches.resetScissor();
Chet Haase44b2fe32012-06-06 19:03:58 -0700276 return DrawGlInfo::kStatusDone;
Romain Guyddf74372012-05-22 14:07:07 -0700277}
278
279void OpenGLRenderer::syncState() {
Romain Guyddf74372012-05-22 14:07:07 -0700280 if (mCaches.blend) {
281 glEnable(GL_BLEND);
282 } else {
283 glDisable(GL_BLEND);
Romain Guy6b7bd242010-10-06 19:49:23 -0700284 }
Romain Guybb9524b2010-06-22 18:56:38 -0700285}
286
henry.uh_chen33f5a592014-07-02 19:36:56 +0800287void OpenGLRenderer::startTilingCurrentClip(bool opaque, bool expand) {
Romain Guy54c1a642012-09-27 17:55:46 -0700288 if (!mSuppressTiling) {
Chris Craikd6b65f62014-01-01 14:45:21 -0800289 const Snapshot* snapshot = currentSnapshot();
290
Chris Craik14e51302013-12-30 15:32:54 -0800291 const Rect* clip = &mTilingClip;
Chris Craikd6b65f62014-01-01 14:45:21 -0800292 if (snapshot->flags & Snapshot::kFlagFboTarget) {
293 clip = &(snapshot->layer->clipRect);
Romain Guy54c1a642012-09-27 17:55:46 -0700294 }
Romain Guy2b7028e2012-09-19 17:25:38 -0700295
henry.uh_chen33f5a592014-07-02 19:36:56 +0800296 startTiling(*clip, getViewportHeight(), opaque, expand);
Romain Guyc3fedaf2013-01-29 17:26:25 -0800297 }
298}
299
henry.uh_chen33f5a592014-07-02 19:36:56 +0800300void OpenGLRenderer::startTiling(const Rect& clip, int windowHeight, bool opaque, bool expand) {
Romain Guyc3fedaf2013-01-29 17:26:25 -0800301 if (!mSuppressTiling) {
henry.uh_chen33f5a592014-07-02 19:36:56 +0800302 if(expand) {
303 // Expand the startTiling region by 1
304 int leftNotZero = (clip.left > 0) ? 1 : 0;
305 int topNotZero = (windowHeight - clip.bottom > 0) ? 1 : 0;
306
307 mCaches.startTiling(
308 clip.left - leftNotZero,
309 windowHeight - clip.bottom - topNotZero,
310 clip.right - clip.left + leftNotZero + 1,
311 clip.bottom - clip.top + topNotZero + 1,
312 opaque);
313 } else {
314 mCaches.startTiling(clip.left, windowHeight - clip.bottom,
Romain Guy52036b12013-02-14 18:03:37 -0800315 clip.right - clip.left, clip.bottom - clip.top, opaque);
henry.uh_chen33f5a592014-07-02 19:36:56 +0800316 }
Romain Guy54c1a642012-09-27 17:55:46 -0700317 }
Romain Guy2b7028e2012-09-19 17:25:38 -0700318}
319
320void OpenGLRenderer::endTiling() {
Romain Guy54c1a642012-09-27 17:55:46 -0700321 if (!mSuppressTiling) mCaches.endTiling();
Romain Guy2b7028e2012-09-19 17:25:38 -0700322}
323
Romain Guyb025b9c2010-09-16 14:16:48 -0700324void OpenGLRenderer::finish() {
Romain Guy7c450aa2012-09-21 19:15:00 -0700325 renderOverdraw();
Romain Guy2b7028e2012-09-19 17:25:38 -0700326 endTiling();
327
Romain Guyca89e2a2013-03-08 17:44:20 -0800328 // When finish() is invoked on FBO 0 we've reached the end
329 // of the current frame
330 if (getTargetFbo() == 0) {
331 mCaches.pathCache.trim();
Chris Craik05f3d6e2014-06-02 16:27:04 -0700332 mCaches.tessellationCache.trim();
Romain Guyca89e2a2013-03-08 17:44:20 -0800333 }
334
Romain Guy11cb6422012-09-21 00:39:43 -0700335 if (!suppressErrorChecks()) {
Romain Guyb025b9c2010-09-16 14:16:48 -0700336#if DEBUG_OPENGL
Chris Craike4aa95e2014-05-08 13:57:05 -0700337 GLUtils::dumpGLErrors();
Romain Guyb025b9c2010-09-16 14:16:48 -0700338#endif
Romain Guy11cb6422012-09-21 00:39:43 -0700339
Romain Guyc15008e2010-11-10 11:59:15 -0800340#if DEBUG_MEMORY_USAGE
Romain Guye190aa62010-11-10 19:01:29 -0800341 mCaches.dumpMemoryUsage();
Romain Guy11cb6422012-09-21 00:39:43 -0700342#else
343 if (mCaches.getDebugLevel() & kDebugMemory) {
344 mCaches.dumpMemoryUsage();
345 }
Romain Guyc15008e2010-11-10 11:59:15 -0800346#endif
Romain Guy11cb6422012-09-21 00:39:43 -0700347 }
Romain Guy96885eb2013-03-26 15:05:58 -0700348
349 mFrameStarted = false;
Romain Guyb025b9c2010-09-16 14:16:48 -0700350}
351
Romain Guy35643dd2012-09-18 15:40:58 -0700352void OpenGLRenderer::resumeAfterLayer() {
John Reck3b202512014-06-23 13:13:08 -0700353 mRenderState.setViewport(getViewportWidth(), getViewportHeight());
354 mRenderState.bindFramebuffer(currentSnapshot()->fbo);
Romain Guy7c450aa2012-09-21 19:15:00 -0700355 debugOverdraw(true, false);
Romain Guy35643dd2012-09-18 15:40:58 -0700356
357 mCaches.resetScissor();
358 dirtyClip();
359}
360
Romain Guy8f3b8e32012-03-27 16:33:45 -0700361status_t OpenGLRenderer::callDrawGLFunction(Functor* functor, Rect& dirty) {
Chris Craikd6b65f62014-01-01 14:45:21 -0800362 if (currentSnapshot()->isIgnored()) return DrawGlInfo::kStatusDone;
Chris Craik408eb122013-03-26 18:55:15 -0700363
Chris Craikd6b65f62014-01-01 14:45:21 -0800364 Rect clip(*currentClipRect());
Romain Guy80911b82011-03-16 15:30:12 -0700365 clip.snapToPixelBoundaries();
366
Romain Guyd643bb52011-03-01 14:55:21 -0800367 // Since we don't know what the functor will draw, let's dirty
Chris Craikd6b65f62014-01-01 14:45:21 -0800368 // the entire clip region
Romain Guyd643bb52011-03-01 14:55:21 -0800369 if (hasLayer()) {
Romain Guyd643bb52011-03-01 14:55:21 -0800370 dirtyLayerUnchecked(clip, getRegion());
371 }
Romain Guyd643bb52011-03-01 14:55:21 -0800372
Romain Guy08aa2cb2011-03-17 11:06:57 -0700373 DrawGlInfo info;
374 info.clipLeft = clip.left;
375 info.clipTop = clip.top;
376 info.clipRight = clip.right;
377 info.clipBottom = clip.bottom;
378 info.isLayer = hasLayer();
Chris Craika64a2be2014-05-14 14:17:01 -0700379 info.width = getViewportWidth();
380 info.height = getViewportHeight();
Chris Craikd6b65f62014-01-01 14:45:21 -0800381 currentTransform()->copyTo(&info.transform[0]);
Romain Guy80911b82011-03-16 15:30:12 -0700382
John Reck3b202512014-06-23 13:13:08 -0700383 bool prevDirtyClip = mDirtyClip;
Chris Craik54f574a2013-08-26 11:23:46 -0700384 // setup GL state for functor
385 if (mDirtyClip) {
Chris Craik54f574a2013-08-26 11:23:46 -0700386 setStencilFromClip(); // can issue draws, so must precede enableScissor()/interrupt()
387 }
John Reck3b202512014-06-23 13:13:08 -0700388 if (mCaches.enableScissor() || prevDirtyClip) {
John Reck25d2f7b2013-09-10 13:12:09 -0700389 setScissorFromClip();
390 }
Chris Craik54f574a2013-08-26 11:23:46 -0700391
John Reck3b202512014-06-23 13:13:08 -0700392 mRenderState.invokeFunctor(functor, DrawGlInfo::kModeDraw, &info);
393 // Scissor may have been modified, reset dirty clip
394 dirtyClip();
Romain Guycabfcc12011-03-07 18:06:46 -0800395
John Reck750ca6d2014-03-28 16:33:18 -0700396 return DrawGlInfo::kStatusDrew;
Chet Haasedaf98e92011-01-10 14:10:36 -0800397}
398
Romain Guyf6a11b82010-06-23 17:47:49 -0700399///////////////////////////////////////////////////////////////////////////////
Romain Guy87e2f7572012-09-24 11:37:12 -0700400// Debug
401///////////////////////////////////////////////////////////////////////////////
402
Chris Craik62d307c2014-07-29 10:35:13 -0700403void OpenGLRenderer::eventMarkDEBUG(const char* fmt, ...) const {
404#if DEBUG_DETAILED_EVENTS
405 const int BUFFER_SIZE = 256;
406 va_list ap;
407 char buf[BUFFER_SIZE];
408
409 va_start(ap, fmt);
410 vsnprintf(buf, BUFFER_SIZE, fmt, ap);
411 va_end(ap);
412
413 eventMark(buf);
414#endif
415}
416
417
Romain Guy0f6675332013-03-01 14:31:04 -0800418void OpenGLRenderer::eventMark(const char* name) const {
419 mCaches.eventMark(0, name);
420}
421
Romain Guy87e2f7572012-09-24 11:37:12 -0700422void OpenGLRenderer::startMark(const char* name) const {
423 mCaches.startMark(0, name);
424}
425
426void OpenGLRenderer::endMark() const {
427 mCaches.endMark();
428}
429
430void OpenGLRenderer::debugOverdraw(bool enable, bool clear) {
John Reck3b202512014-06-23 13:13:08 -0700431 mRenderState.debugOverdraw(enable, clear);
Romain Guy87e2f7572012-09-24 11:37:12 -0700432}
433
434void OpenGLRenderer::renderOverdraw() {
435 if (mCaches.debugOverdraw && getTargetFbo() == 0) {
Chris Craik5f803622013-03-21 14:39:04 -0700436 const Rect* clip = &mTilingClip;
Romain Guy87e2f7572012-09-24 11:37:12 -0700437
438 mCaches.enableScissor();
Chris Craika64a2be2014-05-14 14:17:01 -0700439 mCaches.setScissor(clip->left, firstSnapshot()->getViewportHeight() - clip->bottom,
Romain Guy87e2f7572012-09-24 11:37:12 -0700440 clip->right - clip->left, clip->bottom - clip->top);
441
Romain Guy627c6fd2013-08-21 11:53:18 -0700442 // 1x overdraw
Romain Guy87e2f7572012-09-24 11:37:12 -0700443 mCaches.stencil.enableDebugTest(2);
Romain Guy627c6fd2013-08-21 11:53:18 -0700444 drawColor(mCaches.getOverdrawColor(1), SkXfermode::kSrcOver_Mode);
445
446 // 2x overdraw
Romain Guy87e2f7572012-09-24 11:37:12 -0700447 mCaches.stencil.enableDebugTest(3);
Romain Guy627c6fd2013-08-21 11:53:18 -0700448 drawColor(mCaches.getOverdrawColor(2), SkXfermode::kSrcOver_Mode);
449
450 // 3x overdraw
Romain Guy87e2f7572012-09-24 11:37:12 -0700451 mCaches.stencil.enableDebugTest(4);
Romain Guy627c6fd2013-08-21 11:53:18 -0700452 drawColor(mCaches.getOverdrawColor(3), SkXfermode::kSrcOver_Mode);
453
454 // 4x overdraw and higher
Romain Guy87e2f7572012-09-24 11:37:12 -0700455 mCaches.stencil.enableDebugTest(4, true);
Romain Guy627c6fd2013-08-21 11:53:18 -0700456 drawColor(mCaches.getOverdrawColor(4), SkXfermode::kSrcOver_Mode);
457
Romain Guy87e2f7572012-09-24 11:37:12 -0700458 mCaches.stencil.disable();
459 }
460}
461
462///////////////////////////////////////////////////////////////////////////////
Romain Guy11cb6422012-09-21 00:39:43 -0700463// Layers
464///////////////////////////////////////////////////////////////////////////////
465
466bool OpenGLRenderer::updateLayer(Layer* layer, bool inFrame) {
Chris Craika7090e02014-06-20 16:01:00 -0700467 if (layer->deferredUpdateScheduled && layer->renderer
468 && layer->renderNode.get() && layer->renderNode->isRenderable()) {
Romain Guy40543602013-06-12 15:31:28 -0700469 ATRACE_CALL();
470
Romain Guy11cb6422012-09-21 00:39:43 -0700471 Rect& dirty = layer->dirtyRect;
472
Romain Guy7c450aa2012-09-21 19:15:00 -0700473 if (inFrame) {
474 endTiling();
475 debugOverdraw(false, false);
476 }
Romain Guy11cb6422012-09-21 00:39:43 -0700477
Romain Guy96885eb2013-03-26 15:05:58 -0700478 if (CC_UNLIKELY(inFrame || mCaches.drawDeferDisabled)) {
Chris Craik69e5adf2014-08-14 13:34:01 -0700479 layer->render(*this);
Romain Guy96885eb2013-03-26 15:05:58 -0700480 } else {
Chris Craik69e5adf2014-08-14 13:34:01 -0700481 layer->defer(*this);
Romain Guy96885eb2013-03-26 15:05:58 -0700482 }
Romain Guy11cb6422012-09-21 00:39:43 -0700483
484 if (inFrame) {
485 resumeAfterLayer();
Chris Craikd6b65f62014-01-01 14:45:21 -0800486 startTilingCurrentClip();
Romain Guy11cb6422012-09-21 00:39:43 -0700487 }
488
Romain Guy5bb3c732012-11-29 17:52:58 -0800489 layer->debugDrawUpdate = mCaches.debugLayersUpdates;
Chris Craik34416ea2013-04-15 16:08:28 -0700490 layer->hasDrawnSinceUpdate = false;
Romain Guy11cb6422012-09-21 00:39:43 -0700491
492 return true;
493 }
494
495 return false;
496}
497
498void OpenGLRenderer::updateLayers() {
Romain Guy96885eb2013-03-26 15:05:58 -0700499 // If draw deferring is enabled this method will simply defer
500 // the display list of each individual layer. The layers remain
501 // in the layer updates list which will be cleared by flushLayers().
Romain Guy11cb6422012-09-21 00:39:43 -0700502 int count = mLayerUpdates.size();
503 if (count > 0) {
Romain Guy96885eb2013-03-26 15:05:58 -0700504 if (CC_UNLIKELY(mCaches.drawDeferDisabled)) {
505 startMark("Layer Updates");
506 } else {
507 startMark("Defer Layer Updates");
508 }
Romain Guy11cb6422012-09-21 00:39:43 -0700509
Chris Craik1206b9b2013-04-04 14:46:24 -0700510 // Note: it is very important to update the layers in order
511 for (int i = 0; i < count; i++) {
Romain Guy11cb6422012-09-21 00:39:43 -0700512 Layer* layer = mLayerUpdates.itemAt(i);
513 updateLayer(layer, false);
Romain Guy96885eb2013-03-26 15:05:58 -0700514 if (CC_UNLIKELY(mCaches.drawDeferDisabled)) {
515 mCaches.resourceCache.decrementRefcount(layer);
516 }
Romain Guy11cb6422012-09-21 00:39:43 -0700517 }
Romain Guy11cb6422012-09-21 00:39:43 -0700518
Romain Guy96885eb2013-03-26 15:05:58 -0700519 if (CC_UNLIKELY(mCaches.drawDeferDisabled)) {
520 mLayerUpdates.clear();
John Reck3b202512014-06-23 13:13:08 -0700521 mRenderState.bindFramebuffer(getTargetFbo());
Romain Guy96885eb2013-03-26 15:05:58 -0700522 }
523 endMark();
524 }
525}
526
527void OpenGLRenderer::flushLayers() {
528 int count = mLayerUpdates.size();
529 if (count > 0) {
530 startMark("Apply Layer Updates");
531 char layerName[12];
532
Chris Craik1206b9b2013-04-04 14:46:24 -0700533 // Note: it is very important to update the layers in order
534 for (int i = 0; i < count; i++) {
Chris Craika8bea8e2014-09-24 11:29:43 -0700535 Layer* layer = mLayerUpdates.itemAt(i);
536
Romain Guy96885eb2013-03-26 15:05:58 -0700537 sprintf(layerName, "Layer #%d", i);
Romain Guy02b49b72013-03-29 12:37:16 -0700538 startMark(layerName);
Chris Craika8bea8e2014-09-24 11:29:43 -0700539 ATRACE_FORMAT_BEGIN("flushLayer %ux%u", layer->getWidth(), layer->getHeight());
Romain Guy02b49b72013-03-29 12:37:16 -0700540
Romain Guy02b49b72013-03-29 12:37:16 -0700541 layer->flush();
Chris Craika8bea8e2014-09-24 11:29:43 -0700542
Romain Guy40543602013-06-12 15:31:28 -0700543 ATRACE_END();
Chris Craika8bea8e2014-09-24 11:29:43 -0700544 endMark();
Romain Guy40543602013-06-12 15:31:28 -0700545
Romain Guy02b49b72013-03-29 12:37:16 -0700546 mCaches.resourceCache.decrementRefcount(layer);
Romain Guy96885eb2013-03-26 15:05:58 -0700547 }
548
549 mLayerUpdates.clear();
John Reck3b202512014-06-23 13:13:08 -0700550 mRenderState.bindFramebuffer(getTargetFbo());
Romain Guy96885eb2013-03-26 15:05:58 -0700551
Romain Guy11cb6422012-09-21 00:39:43 -0700552 endMark();
553 }
554}
555
556void OpenGLRenderer::pushLayerUpdate(Layer* layer) {
557 if (layer) {
Romain Guy02b49b72013-03-29 12:37:16 -0700558 // Make sure we don't introduce duplicates.
559 // SortedVector would do this automatically but we need to respect
560 // the insertion order. The linear search is not an issue since
561 // this list is usually very short (typically one item, at most a few)
562 for (int i = mLayerUpdates.size() - 1; i >= 0; i--) {
563 if (mLayerUpdates.itemAt(i) == layer) {
564 return;
565 }
566 }
Romain Guy11cb6422012-09-21 00:39:43 -0700567 mLayerUpdates.push_back(layer);
568 mCaches.resourceCache.incrementRefcount(layer);
569 }
570}
571
Romain Guye93482f2013-06-17 13:14:51 -0700572void OpenGLRenderer::cancelLayerUpdate(Layer* layer) {
573 if (layer) {
574 for (int i = mLayerUpdates.size() - 1; i >= 0; i--) {
575 if (mLayerUpdates.itemAt(i) == layer) {
576 mLayerUpdates.removeAt(i);
577 mCaches.resourceCache.decrementRefcount(layer);
578 break;
579 }
580 }
581 }
582}
583
Romain Guy11cb6422012-09-21 00:39:43 -0700584void OpenGLRenderer::clearLayerUpdates() {
585 size_t count = mLayerUpdates.size();
586 if (count > 0) {
587 mCaches.resourceCache.lock();
588 for (size_t i = 0; i < count; i++) {
589 mCaches.resourceCache.decrementRefcountLocked(mLayerUpdates.itemAt(i));
590 }
591 mCaches.resourceCache.unlock();
592 mLayerUpdates.clear();
593 }
594}
595
Romain Guy40543602013-06-12 15:31:28 -0700596void OpenGLRenderer::flushLayerUpdates() {
John Recka7c2ea22014-08-08 13:21:00 -0700597 ATRACE_CALL();
Romain Guy40543602013-06-12 15:31:28 -0700598 syncState();
599 updateLayers();
600 flushLayers();
601 // Wait for all the layer updates to be executed
602 AutoFence fence;
603}
604
John Reck443a7142014-09-04 17:40:05 -0700605void OpenGLRenderer::markLayersAsBuildLayers() {
606 for (size_t i = 0; i < mLayerUpdates.size(); i++) {
607 mLayerUpdates[i]->wasBuildLayered = true;
608 }
609}
610
Romain Guy11cb6422012-09-21 00:39:43 -0700611///////////////////////////////////////////////////////////////////////////////
Romain Guyf6a11b82010-06-23 17:47:49 -0700612// State management
613///////////////////////////////////////////////////////////////////////////////
614
Chris Craik14e51302013-12-30 15:32:54 -0800615void OpenGLRenderer::onSnapshotRestored(const Snapshot& removed, const Snapshot& restored) {
Chris Craika64a2be2014-05-14 14:17:01 -0700616 bool restoreViewport = removed.flags & Snapshot::kFlagIsFboLayer;
Chris Craik14e51302013-12-30 15:32:54 -0800617 bool restoreClip = removed.flags & Snapshot::kFlagClipSet;
618 bool restoreLayer = removed.flags & Snapshot::kFlagIsLayer;
Romain Guybd6b79b2010-06-26 00:13:53 -0700619
Chris Craika64a2be2014-05-14 14:17:01 -0700620 if (restoreViewport) {
John Reck3b202512014-06-23 13:13:08 -0700621 mRenderState.setViewport(getViewportWidth(), getViewportHeight());
Romain Guyeb993562010-10-05 18:14:38 -0700622 }
623
Romain Guy2542d192010-08-18 11:47:12 -0700624 if (restoreClip) {
Romain Guy746b7402010-10-26 16:27:31 -0700625 dirtyClip();
Romain Guy8fb95422010-08-17 18:38:51 -0700626 }
Romain Guy2542d192010-08-18 11:47:12 -0700627
Romain Guy5ec99242010-11-03 16:19:08 -0700628 if (restoreLayer) {
Chris Craik7273daa2013-03-28 11:25:24 -0700629 endMark(); // Savelayer
Chris Craika8bea8e2014-09-24 11:29:43 -0700630 ATRACE_END(); // SaveLayer
Chris Craik7273daa2013-03-28 11:25:24 -0700631 startMark("ComposeLayer");
Chris Craik14e51302013-12-30 15:32:54 -0800632 composeLayer(removed, restored);
Chris Craik7273daa2013-03-28 11:25:24 -0700633 endMark();
Romain Guy5ec99242010-11-03 16:19:08 -0700634 }
Romain Guybb9524b2010-06-22 18:56:38 -0700635}
636
Romain Guyf6a11b82010-06-23 17:47:49 -0700637///////////////////////////////////////////////////////////////////////////////
Romain Guybd6b79b2010-06-26 00:13:53 -0700638// Layers
639///////////////////////////////////////////////////////////////////////////////
640
641int OpenGLRenderer::saveLayer(float left, float top, float right, float bottom,
Chris Craik3f0854292014-04-15 16:18:08 -0700642 const SkPaint* paint, int flags, const SkPath* convexMask) {
Chris Craik4ace7302014-09-14 15:49:54 -0700643 // force matrix/clip isolation for layer
644 flags |= SkCanvas::kClip_SaveFlag | SkCanvas::kMatrix_SaveFlag;
645
Romain Guyeb993562010-10-05 18:14:38 -0700646 const int count = saveSnapshot(flags);
Romain Guyd55a8612010-06-28 17:42:46 -0700647
Chris Craikd6b65f62014-01-01 14:45:21 -0800648 if (!currentSnapshot()->isIgnored()) {
Chris Craik3f0854292014-04-15 16:18:08 -0700649 createLayer(left, top, right, bottom, paint, flags, convexMask);
Romain Guydbc26d22010-10-11 17:58:29 -0700650 }
Romain Guyd55a8612010-06-28 17:42:46 -0700651
652 return count;
Romain Guybd6b79b2010-06-26 00:13:53 -0700653}
654
Chris Craikd90144d2013-03-19 15:03:48 -0700655void OpenGLRenderer::calculateLayerBoundsAndClip(Rect& bounds, Rect& clip, bool fboLayer) {
656 const Rect untransformedBounds(bounds);
657
Chris Craikd6b65f62014-01-01 14:45:21 -0800658 currentTransform()->mapRect(bounds);
Chris Craikd90144d2013-03-19 15:03:48 -0700659
660 // Layers only make sense if they are in the framebuffer's bounds
Chris Craikd6b65f62014-01-01 14:45:21 -0800661 if (bounds.intersect(*currentClipRect())) {
Chris Craikd90144d2013-03-19 15:03:48 -0700662 // We cannot work with sub-pixels in this case
663 bounds.snapToPixelBoundaries();
664
665 // When the layer is not an FBO, we may use glCopyTexImage so we
666 // need to make sure the layer does not extend outside the bounds
667 // of the framebuffer
Chris Craik92419752014-05-15 13:21:28 -0700668 const Snapshot& previous = *(currentSnapshot()->previous);
669 Rect previousViewport(0, 0, previous.getViewportWidth(), previous.getViewportHeight());
670 if (!bounds.intersect(previousViewport)) {
Chris Craikd90144d2013-03-19 15:03:48 -0700671 bounds.setEmpty();
672 } else if (fboLayer) {
673 clip.set(bounds);
674 mat4 inverse;
Chris Craikd6b65f62014-01-01 14:45:21 -0800675 inverse.loadInverse(*currentTransform());
Chris Craikd90144d2013-03-19 15:03:48 -0700676 inverse.mapRect(clip);
677 clip.snapToPixelBoundaries();
678 if (clip.intersect(untransformedBounds)) {
679 clip.translate(-untransformedBounds.left, -untransformedBounds.top);
680 bounds.set(untransformedBounds);
681 } else {
682 clip.setEmpty();
683 }
684 }
685 } else {
686 bounds.setEmpty();
687 }
688}
689
Chris Craik408eb122013-03-26 18:55:15 -0700690void OpenGLRenderer::updateSnapshotIgnoreForLayer(const Rect& bounds, const Rect& clip,
691 bool fboLayer, int alpha) {
692 if (bounds.isEmpty() || bounds.getWidth() > mCaches.maxTextureSize ||
693 bounds.getHeight() > mCaches.maxTextureSize ||
694 (fboLayer && clip.isEmpty())) {
695 mSnapshot->empty = fboLayer;
696 } else {
Chris Craik74cf7e62014-08-07 14:34:46 -0700697 mSnapshot->invisible = mSnapshot->invisible || (alpha <= 0 && fboLayer);
Chris Craik408eb122013-03-26 18:55:15 -0700698 }
699}
700
Chris Craikd90144d2013-03-19 15:03:48 -0700701int OpenGLRenderer::saveLayerDeferred(float left, float top, float right, float bottom,
Derek Sollenbergerd44fbe52014-02-05 16:47:00 -0500702 const SkPaint* paint, int flags) {
Chris Craikd90144d2013-03-19 15:03:48 -0700703 const int count = saveSnapshot(flags);
704
Chris Craikd6b65f62014-01-01 14:45:21 -0800705 if (!currentSnapshot()->isIgnored() && (flags & SkCanvas::kClipToLayer_SaveFlag)) {
Chris Craikd90144d2013-03-19 15:03:48 -0700706 // initialize the snapshot as though it almost represents an FBO layer so deferred draw
707 // operations will be able to store and restore the current clip and transform info, and
708 // quick rejection will be correct (for display lists)
709
710 Rect bounds(left, top, right, bottom);
711 Rect clip;
712 calculateLayerBoundsAndClip(bounds, clip, true);
Derek Sollenbergerd44fbe52014-02-05 16:47:00 -0500713 updateSnapshotIgnoreForLayer(bounds, clip, true, getAlphaDirect(paint));
Chris Craikd90144d2013-03-19 15:03:48 -0700714
Chris Craikd6b65f62014-01-01 14:45:21 -0800715 if (!currentSnapshot()->isIgnored()) {
Chris Craikd90144d2013-03-19 15:03:48 -0700716 mSnapshot->resetTransform(-bounds.left, -bounds.top, 0.0f);
717 mSnapshot->resetClip(clip.left, clip.top, clip.right, clip.bottom);
Chris Craika64a2be2014-05-14 14:17:01 -0700718 mSnapshot->initializeViewport(bounds.getWidth(), bounds.getHeight());
Chris Craikdeeda3d2014-05-05 19:09:33 -0700719 mSnapshot->roundRectClipState = NULL;
Chris Craikd90144d2013-03-19 15:03:48 -0700720 }
721 }
722
723 return count;
724}
725
Romain Guy1c740bc2010-09-13 18:00:09 -0700726/**
727 * Layers are viewed by Skia are slightly different than layers in image editing
728 * programs (for instance.) When a layer is created, previously created layers
729 * and the frame buffer still receive every drawing command. For instance, if a
730 * layer is created and a shape intersecting the bounds of the layers and the
731 * framebuffer is draw, the shape will be drawn on both (unless the layer was
732 * created with the SkCanvas::kClipToLayer_SaveFlag flag.)
733 *
734 * A way to implement layers is to create an FBO for each layer, backed by an RGBA
735 * texture. Unfortunately, this is inefficient as it requires every primitive to
736 * be drawn n + 1 times, where n is the number of active layers. In practice this
737 * means, for every primitive:
738 * - Switch active frame buffer
739 * - Change viewport, clip and projection matrix
740 * - Issue the drawing
741 *
742 * Switching rendering target n + 1 times per drawn primitive is extremely costly.
Romain Guy6b7bd242010-10-06 19:49:23 -0700743 * To avoid this, layers are implemented in a different way here, at least in the
744 * general case. FBOs are used, as an optimization, when the "clip to layer" flag
745 * is set. When this flag is set we can redirect all drawing operations into a
746 * single FBO.
Romain Guy1c740bc2010-09-13 18:00:09 -0700747 *
748 * This implementation relies on the frame buffer being at least RGBA 8888. When
749 * a layer is created, only a texture is created, not an FBO. The content of the
750 * frame buffer contained within the layer's bounds is copied into this texture
Romain Guy87a76572010-09-13 18:11:21 -0700751 * using glCopyTexImage2D(). The layer's region is then cleared(1) in the frame
Romain Guy1c740bc2010-09-13 18:00:09 -0700752 * buffer and drawing continues as normal. This technique therefore treats the
753 * frame buffer as a scratch buffer for the layers.
754 *
755 * To compose the layers back onto the frame buffer, each layer texture
756 * (containing the original frame buffer data) is drawn as a simple quad over
757 * the frame buffer. The trick is that the quad is set as the composition
758 * destination in the blending equation, and the frame buffer becomes the source
759 * of the composition.
760 *
761 * Drawing layers with an alpha value requires an extra step before composition.
762 * An empty quad is drawn over the layer's region in the frame buffer. This quad
763 * is drawn with the rgba color (0,0,0,alpha). The alpha value offered by the
764 * quad is used to multiply the colors in the frame buffer. This is achieved by
765 * changing the GL blend functions for the GL_FUNC_ADD blend equation to
766 * GL_ZERO, GL_SRC_ALPHA.
767 *
768 * Because glCopyTexImage2D() can be slow, an alternative implementation might
769 * be use to draw a single clipped layer. The implementation described above
770 * is correct in every case.
Romain Guy87a76572010-09-13 18:11:21 -0700771 *
772 * (1) The frame buffer is actually not cleared right away. To allow the GPU
773 * to potentially optimize series of calls to glCopyTexImage2D, the frame
774 * buffer is left untouched until the first drawing operation. Only when
775 * something actually gets drawn are the layers regions cleared.
Romain Guy1c740bc2010-09-13 18:00:09 -0700776 */
Chet Haased48885a2012-08-28 17:43:28 -0700777bool OpenGLRenderer::createLayer(float left, float top, float right, float bottom,
Chris Craik3f0854292014-04-15 16:18:08 -0700778 const SkPaint* paint, int flags, const SkPath* convexMask) {
Romain Guyeb993562010-10-05 18:14:38 -0700779 LAYER_LOGD("Requesting layer %.2fx%.2f", right - left, bottom - top);
Romain Guyfb8b7632010-08-23 21:05:08 -0700780 LAYER_LOGD("Layer cache size = %d", mCaches.layerCache.getSize());
Romain Guy8ba548f2010-06-30 19:21:21 -0700781
Romain Guyeb993562010-10-05 18:14:38 -0700782 const bool fboLayer = flags & SkCanvas::kClipToLayer_SaveFlag;
783
Romain Guyf607bdc2010-09-10 19:20:06 -0700784 // Window coordinates of the layer
Chet Haased48885a2012-08-28 17:43:28 -0700785 Rect clip;
Romain Guy8aef54f2010-09-01 15:13:49 -0700786 Rect bounds(left, top, right, bottom);
Chris Craikd90144d2013-03-19 15:03:48 -0700787 calculateLayerBoundsAndClip(bounds, clip, fboLayer);
Derek Sollenberger674554f2014-02-19 16:47:32 +0000788 updateSnapshotIgnoreForLayer(bounds, clip, fboLayer, getAlphaDirect(paint));
Romain Guydbc26d22010-10-11 17:58:29 -0700789
790 // Bail out if we won't draw in this snapshot
Chris Craikd6b65f62014-01-01 14:45:21 -0800791 if (currentSnapshot()->isIgnored()) {
Romain Guyb025b9c2010-09-16 14:16:48 -0700792 return false;
793 }
Romain Guyf18fd992010-07-08 11:45:51 -0700794
Romain Guya1d3c912011-12-13 14:55:06 -0800795 mCaches.activeTexture(0);
John Reck3b202512014-06-23 13:13:08 -0700796 Layer* layer = mCaches.layerCache.get(mRenderState, bounds.getWidth(), bounds.getHeight());
Romain Guydda570202010-07-06 11:39:32 -0700797 if (!layer) {
Romain Guyf18fd992010-07-08 11:45:51 -0700798 return false;
Romain Guybd6b79b2010-06-26 00:13:53 -0700799 }
800
Derek Sollenberger674554f2014-02-19 16:47:32 +0000801 layer->setPaint(paint);
Romain Guy8aef54f2010-09-01 15:13:49 -0700802 layer->layer.set(bounds);
Romain Guy9ace8f52011-07-07 20:50:11 -0700803 layer->texCoords.set(0.0f, bounds.getHeight() / float(layer->getHeight()),
804 bounds.getWidth() / float(layer->getWidth()), 0.0f);
Derek Sollenbergerd44fbe52014-02-05 16:47:00 -0500805
Chet Haasea23eed82012-04-12 15:19:04 -0700806 layer->setBlend(true);
Romain Guy7c25aab2012-10-18 15:05:02 -0700807 layer->setDirty(false);
Chris Craik3f0854292014-04-15 16:18:08 -0700808 layer->setConvexMask(convexMask); // note: the mask must be cleared before returning to the cache
Romain Guydda570202010-07-06 11:39:32 -0700809
Romain Guy8fb95422010-08-17 18:38:51 -0700810 // Save the layer in the snapshot
Chet Haased48885a2012-08-28 17:43:28 -0700811 mSnapshot->flags |= Snapshot::kFlagIsLayer;
812 mSnapshot->layer = layer;
Romain Guy1d83e192010-08-17 11:37:00 -0700813
Chris Craika8bea8e2014-09-24 11:29:43 -0700814 ATRACE_FORMAT_BEGIN("%ssaveLayer %ux%u",
815 fboLayer ? "" : "unclipped ",
816 layer->getWidth(), layer->getHeight());
Chris Craik7273daa2013-03-28 11:25:24 -0700817 startMark("SaveLayer");
Romain Guyeb993562010-10-05 18:14:38 -0700818 if (fboLayer) {
Chris Craike63f7c622013-10-17 10:30:55 -0700819 return createFboLayer(layer, bounds, clip);
Romain Guyeb993562010-10-05 18:14:38 -0700820 } else {
821 // Copy the framebuffer into the layer
Romain Guy9ace8f52011-07-07 20:50:11 -0700822 layer->bindTexture();
Romain Guy514fb182011-01-19 14:38:29 -0800823 if (!bounds.isEmpty()) {
Romain Guy9ace8f52011-07-07 20:50:11 -0700824 if (layer->isEmpty()) {
Romain Guyb254c242013-06-27 17:15:24 -0700825 // Workaround for some GL drivers. When reading pixels lying outside
826 // of the window we should get undefined values for those pixels.
827 // Unfortunately some drivers will turn the entire target texture black
828 // when reading outside of the window.
829 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, layer->getWidth(), layer->getHeight(),
830 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
Romain Guy9ace8f52011-07-07 20:50:11 -0700831 layer->setEmpty(false);
Romain Guy514fb182011-01-19 14:38:29 -0800832 }
Romain Guy7b5b6ab2011-03-14 18:05:08 -0700833
Chris Craika64a2be2014-05-14 14:17:01 -0700834 glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0,
835 bounds.left, getViewportHeight() - bounds.bottom,
836 bounds.getWidth(), bounds.getHeight());
Romain Guyb254c242013-06-27 17:15:24 -0700837
Romain Guy54be1cd2011-06-13 19:04:27 -0700838 // Enqueue the buffer coordinates to clear the corresponding region later
839 mLayers.push(new Rect(bounds));
Romain Guyae88e5e2010-10-22 17:49:18 -0700840 }
Romain Guyeb993562010-10-05 18:14:38 -0700841 }
Romain Guyf86ef572010-07-01 11:05:42 -0700842
Romain Guyd55a8612010-06-28 17:42:46 -0700843 return true;
Romain Guybd6b79b2010-06-26 00:13:53 -0700844}
845
Chris Craike63f7c622013-10-17 10:30:55 -0700846bool OpenGLRenderer::createFboLayer(Layer* layer, Rect& bounds, Rect& clip) {
Romain Guyc3fedaf2013-01-29 17:26:25 -0800847 layer->clipRect.set(clip);
Romain Guy9ace8f52011-07-07 20:50:11 -0700848 layer->setFbo(mCaches.fboCache.get());
Romain Guy5b3b3522010-10-27 18:57:51 -0700849
Chet Haased48885a2012-08-28 17:43:28 -0700850 mSnapshot->region = &mSnapshot->layer->region;
Chris Craika64a2be2014-05-14 14:17:01 -0700851 mSnapshot->flags |= Snapshot::kFlagFboTarget | Snapshot::kFlagIsFboLayer;
Chet Haased48885a2012-08-28 17:43:28 -0700852 mSnapshot->fbo = layer->getFbo();
853 mSnapshot->resetTransform(-bounds.left, -bounds.top, 0.0f);
854 mSnapshot->resetClip(clip.left, clip.top, clip.right, clip.bottom);
Chris Craika64a2be2014-05-14 14:17:01 -0700855 mSnapshot->initializeViewport(bounds.getWidth(), bounds.getHeight());
Chris Craikdeeda3d2014-05-05 19:09:33 -0700856 mSnapshot->roundRectClipState = NULL;
Romain Guy5b3b3522010-10-27 18:57:51 -0700857
Romain Guy2b7028e2012-09-19 17:25:38 -0700858 endTiling();
Romain Guy7c450aa2012-09-21 19:15:00 -0700859 debugOverdraw(false, false);
Romain Guy5b3b3522010-10-27 18:57:51 -0700860 // Bind texture to FBO
John Reck3b202512014-06-23 13:13:08 -0700861 mRenderState.bindFramebuffer(layer->getFbo());
Romain Guy9ace8f52011-07-07 20:50:11 -0700862 layer->bindTexture();
Romain Guy5b3b3522010-10-27 18:57:51 -0700863
864 // Initialize the texture if needed
Romain Guy9ace8f52011-07-07 20:50:11 -0700865 if (layer->isEmpty()) {
Romain Guy09087642013-04-04 12:27:54 -0700866 layer->allocateTexture();
Romain Guy9ace8f52011-07-07 20:50:11 -0700867 layer->setEmpty(false);
Romain Guy5b3b3522010-10-27 18:57:51 -0700868 }
869
870 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
Romain Guy9ace8f52011-07-07 20:50:11 -0700871 layer->getTexture(), 0);
Romain Guy5b3b3522010-10-27 18:57:51 -0700872
henry.uh_chen33f5a592014-07-02 19:36:56 +0800873 // Expand the startTiling region by 1
874 startTilingCurrentClip(true, true);
Romain Guy5b3b3522010-10-27 18:57:51 -0700875
876 // Clear the FBO, expand the clear region by 1 to get nice bilinear filtering
Romain Guy586cae32012-07-13 15:28:31 -0700877 mCaches.enableScissor();
Romain Guy8f85e802011-12-14 19:23:32 -0800878 mCaches.setScissor(clip.left - 1.0f, bounds.getHeight() - clip.bottom - 1.0f,
Romain Guy5b3b3522010-10-27 18:57:51 -0700879 clip.getWidth() + 2.0f, clip.getHeight() + 2.0f);
Romain Guy5b3b3522010-10-27 18:57:51 -0700880 glClear(GL_COLOR_BUFFER_BIT);
881
882 dirtyClip();
883
884 // Change the ortho projection
John Reck3b202512014-06-23 13:13:08 -0700885 mRenderState.setViewport(bounds.getWidth(), bounds.getHeight());
Romain Guy5b3b3522010-10-27 18:57:51 -0700886 return true;
887}
888
Romain Guy1c740bc2010-09-13 18:00:09 -0700889/**
890 * Read the documentation of createLayer() before doing anything in this method.
891 */
Chris Craik14e51302013-12-30 15:32:54 -0800892void OpenGLRenderer::composeLayer(const Snapshot& removed, const Snapshot& restored) {
893 if (!removed.layer) {
Steve Block3762c312012-01-06 19:20:56 +0000894 ALOGE("Attempting to compose a layer that does not exist");
Romain Guy1d83e192010-08-17 11:37:00 -0700895 return;
896 }
897
Chris Craik14e51302013-12-30 15:32:54 -0800898 Layer* layer = removed.layer;
Romain Guy8ce00302013-01-15 18:51:42 -0800899 const Rect& rect = layer->layer;
Chris Craik14e51302013-12-30 15:32:54 -0800900 const bool fboLayer = removed.flags & Snapshot::kFlagIsFboLayer;
Romain Guyeb993562010-10-05 18:14:38 -0700901
Chris Craik39a908c2013-06-13 14:39:01 -0700902 bool clipRequired = false;
Chris Craikf0a59072013-11-19 18:00:46 -0800903 calculateQuickRejectForScissor(rect.left, rect.top, rect.right, rect.bottom,
Chris Craikdeeda3d2014-05-05 19:09:33 -0700904 &clipRequired, NULL, false); // safely ignore return, should never be rejected
Chris Craik39a908c2013-06-13 14:39:01 -0700905 mCaches.setScissorEnabled(mScissorOptimizationDisabled || clipRequired);
906
Romain Guyeb993562010-10-05 18:14:38 -0700907 if (fboLayer) {
Romain Guy2b7028e2012-09-19 17:25:38 -0700908 endTiling();
909
Romain Guye0aa84b2012-04-03 19:30:26 -0700910 // Detach the texture from the FBO
911 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 0, 0);
Romain Guy8ce00302013-01-15 18:51:42 -0800912
913 layer->removeFbo(false);
914
Romain Guyeb993562010-10-05 18:14:38 -0700915 // Unbind current FBO and restore previous one
John Reck3b202512014-06-23 13:13:08 -0700916 mRenderState.bindFramebuffer(restored.fbo);
Romain Guy7c450aa2012-09-21 19:15:00 -0700917 debugOverdraw(true, false);
Romain Guy2b7028e2012-09-19 17:25:38 -0700918
Chris Craikd6b65f62014-01-01 14:45:21 -0800919 startTilingCurrentClip();
Romain Guyeb993562010-10-05 18:14:38 -0700920 }
921
Romain Guy9ace8f52011-07-07 20:50:11 -0700922 if (!fboLayer && layer->getAlpha() < 255) {
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -0500923 SkPaint layerPaint;
924 layerPaint.setAlpha(layer->getAlpha());
925 layerPaint.setXfermodeMode(SkXfermode::kDstIn_Mode);
926 layerPaint.setColorFilter(layer->getColorFilter());
927
928 drawColorRect(rect.left, rect.top, rect.right, rect.bottom, &layerPaint, true);
Romain Guy5b3b3522010-10-27 18:57:51 -0700929 // Required below, composeLayerRect() will divide by 255
Romain Guy9ace8f52011-07-07 20:50:11 -0700930 layer->setAlpha(255);
Romain Guyf607bdc2010-09-10 19:20:06 -0700931 }
932
Romain Guy03750a02010-10-18 14:06:08 -0700933 mCaches.unbindMeshBuffer();
Romain Guy8b55f372010-08-18 17:10:07 -0700934
Romain Guya1d3c912011-12-13 14:55:06 -0800935 mCaches.activeTexture(0);
Romain Guy1d83e192010-08-17 11:37:00 -0700936
Romain Guy5b3b3522010-10-27 18:57:51 -0700937 // When the layer is stored in an FBO, we can save a bit of fillrate by
938 // drawing only the dirty region
939 if (fboLayer) {
Chris Craik14e51302013-12-30 15:32:54 -0800940 dirtyLayer(rect.left, rect.top, rect.right, rect.bottom, *restored.transform);
Romain Guy5b3b3522010-10-27 18:57:51 -0700941 composeLayerRegion(layer, rect);
Romain Guy9ace8f52011-07-07 20:50:11 -0700942 } else if (!rect.isEmpty()) {
943 dirtyLayer(rect.left, rect.top, rect.right, rect.bottom);
Digish Pandyaa5ff7392013-11-04 06:30:25 +0530944
945 save(0);
946 // the layer contains screen buffer content that shouldn't be alpha modulated
947 // (and any necessary alpha modulation was handled drawing into the layer)
948 mSnapshot->alpha = 1.0f;
Romain Guy9ace8f52011-07-07 20:50:11 -0700949 composeLayerRect(layer, rect, true);
Digish Pandyaa5ff7392013-11-04 06:30:25 +0530950 restore();
Romain Guy5b3b3522010-10-27 18:57:51 -0700951 }
Romain Guy8b55f372010-08-18 17:10:07 -0700952
Romain Guy746b7402010-10-26 16:27:31 -0700953 dirtyClip();
954
Romain Guyeb993562010-10-05 18:14:38 -0700955 // Failing to add the layer to the cache should happen only if the layer is too large
Chris Craik3f0854292014-04-15 16:18:08 -0700956 layer->setConvexMask(NULL);
Romain Guy8550c4c2010-10-08 15:49:53 -0700957 if (!mCaches.layerCache.put(layer)) {
Romain Guy1d83e192010-08-17 11:37:00 -0700958 LAYER_LOGD("Deleting layer");
Chet Haase603f6de2012-09-14 15:31:25 -0700959 Caches::getInstance().resourceCache.decrementRefcount(layer);
Romain Guy1d83e192010-08-17 11:37:00 -0700960 }
961}
962
Romain Guyaa6c24c2011-04-28 18:40:04 -0700963void OpenGLRenderer::drawTextureLayer(Layer* layer, const Rect& rect) {
Romain Guy24589392013-06-19 12:17:01 -0700964 float alpha = getLayerAlpha(layer);
Romain Guyaa6c24c2011-04-28 18:40:04 -0700965
966 setupDraw();
Romain Guy9ace8f52011-07-07 20:50:11 -0700967 if (layer->getRenderTarget() == GL_TEXTURE_2D) {
Romain Guy8f0095c2011-05-02 17:24:22 -0700968 setupDrawWithTexture();
969 } else {
970 setupDrawWithExternalTexture();
971 }
972 setupDrawTextureTransform();
Romain Guyaa6c24c2011-04-28 18:40:04 -0700973 setupDrawColor(alpha, alpha, alpha, alpha);
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -0500974 setupDrawColorFilter(layer->getColorFilter());
975 setupDrawBlending(layer);
Romain Guyaa6c24c2011-04-28 18:40:04 -0700976 setupDrawProgram();
Romain Guyaa6c24c2011-04-28 18:40:04 -0700977 setupDrawPureColorUniforms();
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -0500978 setupDrawColorFilterUniforms(layer->getColorFilter());
Romain Guy9ace8f52011-07-07 20:50:11 -0700979 if (layer->getRenderTarget() == GL_TEXTURE_2D) {
980 setupDrawTexture(layer->getTexture());
Romain Guy8f0095c2011-05-02 17:24:22 -0700981 } else {
Romain Guy9ace8f52011-07-07 20:50:11 -0700982 setupDrawExternalTexture(layer->getTexture());
Romain Guy8f0095c2011-05-02 17:24:22 -0700983 }
Chris Craikd6b65f62014-01-01 14:45:21 -0800984 if (currentTransform()->isPureTranslate() &&
Chris Craik9757ac02014-02-25 18:50:17 -0800985 !layer->getForceFilter() &&
Romain Guyec19b4a2011-07-07 21:05:04 -0700986 layer->getWidth() == (uint32_t) rect.getWidth() &&
987 layer->getHeight() == (uint32_t) rect.getHeight()) {
Chris Craikd6b65f62014-01-01 14:45:21 -0800988 const float x = (int) floorf(rect.left + currentTransform()->getTranslateX() + 0.5f);
989 const float y = (int) floorf(rect.top + currentTransform()->getTranslateY() + 0.5f);
Romain Guy9ace8f52011-07-07 20:50:11 -0700990
Romain Guyd21b6e12011-11-30 20:21:23 -0800991 layer->setFilter(GL_NEAREST);
Chris Craik4063a0e2013-11-15 16:06:56 -0800992 setupDrawModelView(kModelViewMode_TranslateAndScale, false,
993 x, y, x + rect.getWidth(), y + rect.getHeight(), true);
Romain Guy9ace8f52011-07-07 20:50:11 -0700994 } else {
Romain Guyd21b6e12011-11-30 20:21:23 -0800995 layer->setFilter(GL_LINEAR);
Chris Craik4063a0e2013-11-15 16:06:56 -0800996 setupDrawModelView(kModelViewMode_TranslateAndScale, false,
997 rect.left, rect.top, rect.right, rect.bottom);
Romain Guy9ace8f52011-07-07 20:50:11 -0700998 }
999 setupDrawTextureTransformUniforms(layer->getTexTransform());
Romain Guy3380cfd2013-08-15 16:57:57 -07001000 setupDrawMesh(&mMeshVertices[0].x, &mMeshVertices[0].u);
Romain Guyaa6c24c2011-04-28 18:40:04 -07001001
1002 glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount);
Romain Guyaa6c24c2011-04-28 18:40:04 -07001003}
1004
Romain Guy5b3b3522010-10-27 18:57:51 -07001005void OpenGLRenderer::composeLayerRect(Layer* layer, const Rect& rect, bool swap) {
Chris Craik62d307c2014-07-29 10:35:13 -07001006 if (layer->isTextureLayer()) {
1007 EVENT_LOGD("composeTextureLayerRect");
1008 resetDrawTextureTexCoords(0.0f, 1.0f, 1.0f, 0.0f);
1009 drawTextureLayer(layer, rect);
1010 resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f);
1011 } else {
1012 EVENT_LOGD("composeHardwareLayerRect");
Romain Guyaa6c24c2011-04-28 18:40:04 -07001013 const Rect& texCoords = layer->texCoords;
1014 resetDrawTextureTexCoords(texCoords.left, texCoords.top,
1015 texCoords.right, texCoords.bottom);
Romain Guy5b3b3522010-10-27 18:57:51 -07001016
Romain Guy9ace8f52011-07-07 20:50:11 -07001017 float x = rect.left;
1018 float y = rect.top;
Chris Craikd6b65f62014-01-01 14:45:21 -08001019 bool simpleTransform = currentTransform()->isPureTranslate() &&
Romain Guyec19b4a2011-07-07 21:05:04 -07001020 layer->getWidth() == (uint32_t) rect.getWidth() &&
Romain Guyb2479152011-07-08 11:57:29 -07001021 layer->getHeight() == (uint32_t) rect.getHeight();
1022
1023 if (simpleTransform) {
Romain Guy9ace8f52011-07-07 20:50:11 -07001024 // When we're swapping, the layer is already in screen coordinates
1025 if (!swap) {
Chris Craikd6b65f62014-01-01 14:45:21 -08001026 x = (int) floorf(rect.left + currentTransform()->getTranslateX() + 0.5f);
1027 y = (int) floorf(rect.top + currentTransform()->getTranslateY() + 0.5f);
Romain Guy9ace8f52011-07-07 20:50:11 -07001028 }
1029
Romain Guyd21b6e12011-11-30 20:21:23 -08001030 layer->setFilter(GL_NEAREST, true);
Romain Guy9ace8f52011-07-07 20:50:11 -07001031 } else {
Romain Guyd21b6e12011-11-30 20:21:23 -08001032 layer->setFilter(GL_LINEAR, true);
Romain Guy9ace8f52011-07-07 20:50:11 -07001033 }
1034
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05001035 SkPaint layerPaint;
1036 layerPaint.setAlpha(getLayerAlpha(layer) * 255);
1037 layerPaint.setXfermodeMode(layer->getMode());
1038 layerPaint.setColorFilter(layer->getColorFilter());
1039
1040 bool blend = layer->isBlend() || getLayerAlpha(layer) < 1.0f;
Romain Guy9ace8f52011-07-07 20:50:11 -07001041 drawTextureMesh(x, y, x + rect.getWidth(), y + rect.getHeight(),
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05001042 layer->getTexture(), &layerPaint, blend,
Romain Guy3380cfd2013-08-15 16:57:57 -07001043 &mMeshVertices[0].x, &mMeshVertices[0].u,
Romain Guy9ace8f52011-07-07 20:50:11 -07001044 GL_TRIANGLE_STRIP, gMeshCount, swap, swap || simpleTransform);
Romain Guy5b3b3522010-10-27 18:57:51 -07001045
Romain Guyaa6c24c2011-04-28 18:40:04 -07001046 resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f);
Romain Guyaa6c24c2011-04-28 18:40:04 -07001047 }
Romain Guy5b3b3522010-10-27 18:57:51 -07001048}
1049
Chris Craik34416ea2013-04-15 16:08:28 -07001050/**
1051 * Issues the command X, and if we're composing a save layer to the fbo or drawing a newly updated
1052 * hardware layer with overdraw debug on, draws again to the stencil only, so that these draw
1053 * operations are correctly counted twice for overdraw. NOTE: assumes composeLayerRegion only used
1054 * by saveLayer's restore
1055 */
1056#define DRAW_DOUBLE_STENCIL_IF(COND, DRAW_COMMAND) { \
1057 DRAW_COMMAND; \
1058 if (CC_UNLIKELY(mCaches.debugOverdraw && getTargetFbo() == 0 && COND)) { \
1059 glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); \
1060 DRAW_COMMAND; \
1061 glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); \
1062 } \
1063 }
1064
1065#define DRAW_DOUBLE_STENCIL(DRAW_COMMAND) DRAW_DOUBLE_STENCIL_IF(true, DRAW_COMMAND)
1066
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04001067// This class is purely for inspection. It inherits from SkShader, but Skia does not know how to
1068// use it. The OpenGLRenderer will look at it to find its Layer and whether it is opaque.
1069class LayerShader : public SkShader {
1070public:
1071 LayerShader(Layer* layer, const SkMatrix* localMatrix)
1072 : INHERITED(localMatrix)
1073 , mLayer(layer) {
1074 }
1075
1076 virtual bool asACustomShader(void** data) const {
1077 if (data) {
1078 *data = static_cast<void*>(mLayer);
1079 }
1080 return true;
1081 }
1082
1083 virtual bool isOpaque() const {
1084 return !mLayer->isBlend();
1085 }
1086
1087protected:
1088 virtual void shadeSpan(int x, int y, SkPMColor[], int count) {
1089 LOG_ALWAYS_FATAL("LayerShader should never be drawn with raster backend.");
1090 }
1091
1092 virtual void flatten(SkWriteBuffer&) const {
1093 LOG_ALWAYS_FATAL("LayerShader should never be flattened.");
1094 }
1095
1096 virtual Factory getFactory() const {
1097 LOG_ALWAYS_FATAL("LayerShader should never be created from a stream.");
1098 return NULL;
1099 }
1100private:
1101 // Unowned.
1102 Layer* mLayer;
1103 typedef SkShader INHERITED;
1104};
1105
Romain Guy5b3b3522010-10-27 18:57:51 -07001106void OpenGLRenderer::composeLayerRegion(Layer* layer, const Rect& rect) {
Chris Craik3f0854292014-04-15 16:18:08 -07001107 if (CC_UNLIKELY(layer->region.isEmpty())) return; // nothing to draw
1108
1109 if (layer->getConvexMask()) {
1110 save(SkCanvas::kClip_SaveFlag | SkCanvas::kMatrix_SaveFlag);
1111
1112 // clip to the area of the layer the mask can be larger
1113 clipRect(rect.left, rect.top, rect.right, rect.bottom, SkRegion::kIntersect_Op);
1114
1115 SkPaint paint;
1116 paint.setAntiAlias(true);
1117 paint.setColor(SkColorSetARGB(int(getLayerAlpha(layer) * 255), 0, 0, 0));
1118
Chris Craik3f0854292014-04-15 16:18:08 -07001119 // create LayerShader to map SaveLayer content into subsequent draw
1120 SkMatrix shaderMatrix;
1121 shaderMatrix.setTranslate(rect.left, rect.bottom);
1122 shaderMatrix.preScale(1, -1);
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04001123 LayerShader layerShader(layer, &shaderMatrix);
1124 paint.setShader(&layerShader);
Chris Craik3f0854292014-04-15 16:18:08 -07001125
1126 // Since the drawing primitive is defined in local drawing space,
1127 // we don't need to modify the draw matrix
1128 const SkPath* maskPath = layer->getConvexMask();
1129 DRAW_DOUBLE_STENCIL(drawConvexPath(*maskPath, &paint));
1130
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04001131 paint.setShader(NULL);
Chris Craik3f0854292014-04-15 16:18:08 -07001132 restore();
1133
1134 return;
1135 }
1136
Romain Guy5b3b3522010-10-27 18:57:51 -07001137 if (layer->region.isRect()) {
Romain Guy9fc27812011-04-27 14:21:41 -07001138 layer->setRegionAsRect();
1139
Chris Craik34416ea2013-04-15 16:08:28 -07001140 DRAW_DOUBLE_STENCIL(composeLayerRect(layer, layer->regionRect));
Romain Guy9fc27812011-04-27 14:21:41 -07001141
Romain Guy5b3b3522010-10-27 18:57:51 -07001142 layer->region.clear();
1143 return;
1144 }
1145
Chris Craik62d307c2014-07-29 10:35:13 -07001146 EVENT_LOGD("composeLayerRegion");
Chris Craik3f0854292014-04-15 16:18:08 -07001147 // standard Region based draw
1148 size_t count;
1149 const android::Rect* rects;
1150 Region safeRegion;
1151 if (CC_LIKELY(hasRectToRectTransform())) {
1152 rects = layer->region.getArray(&count);
1153 } else {
1154 safeRegion = Region::createTJunctionFreeRegion(layer->region);
1155 rects = safeRegion.getArray(&count);
1156 }
Romain Guy5b3b3522010-10-27 18:57:51 -07001157
Chris Craik3f0854292014-04-15 16:18:08 -07001158 const float alpha = getLayerAlpha(layer);
1159 const float texX = 1.0f / float(layer->getWidth());
1160 const float texY = 1.0f / float(layer->getHeight());
1161 const float height = rect.getHeight();
Romain Guy5b3b3522010-10-27 18:57:51 -07001162
Chris Craik3f0854292014-04-15 16:18:08 -07001163 setupDraw();
Romain Guy8ce00302013-01-15 18:51:42 -08001164
Chris Craik3f0854292014-04-15 16:18:08 -07001165 // We must get (and therefore bind) the region mesh buffer
1166 // after we setup drawing in case we need to mess with the
1167 // stencil buffer in setupDraw()
1168 TextureVertex* mesh = mCaches.getRegionMesh();
1169 uint32_t numQuads = 0;
Romain Guy5b3b3522010-10-27 18:57:51 -07001170
Chris Craik3f0854292014-04-15 16:18:08 -07001171 setupDrawWithTexture();
1172 setupDrawColor(alpha, alpha, alpha, alpha);
1173 setupDrawColorFilter(layer->getColorFilter());
1174 setupDrawBlending(layer);
1175 setupDrawProgram();
1176 setupDrawDirtyRegionsDisabled();
1177 setupDrawPureColorUniforms();
1178 setupDrawColorFilterUniforms(layer->getColorFilter());
1179 setupDrawTexture(layer->getTexture());
1180 if (currentTransform()->isPureTranslate()) {
1181 const float x = (int) floorf(rect.left + currentTransform()->getTranslateX() + 0.5f);
1182 const float y = (int) floorf(rect.top + currentTransform()->getTranslateY() + 0.5f);
Romain Guy9ace8f52011-07-07 20:50:11 -07001183
Chris Craik3f0854292014-04-15 16:18:08 -07001184 layer->setFilter(GL_NEAREST);
1185 setupDrawModelView(kModelViewMode_Translate, false,
1186 x, y, x + rect.getWidth(), y + rect.getHeight(), true);
1187 } else {
1188 layer->setFilter(GL_LINEAR);
1189 setupDrawModelView(kModelViewMode_Translate, false,
1190 rect.left, rect.top, rect.right, rect.bottom);
1191 }
1192 setupDrawMeshIndices(&mesh[0].x, &mesh[0].u);
Romain Guy5b3b3522010-10-27 18:57:51 -07001193
Chris Craik3f0854292014-04-15 16:18:08 -07001194 for (size_t i = 0; i < count; i++) {
1195 const android::Rect* r = &rects[i];
Romain Guy5b3b3522010-10-27 18:57:51 -07001196
Chris Craik3f0854292014-04-15 16:18:08 -07001197 const float u1 = r->left * texX;
1198 const float v1 = (height - r->top) * texY;
1199 const float u2 = r->right * texX;
1200 const float v2 = (height - r->bottom) * texY;
Romain Guy5b3b3522010-10-27 18:57:51 -07001201
Chris Craik3f0854292014-04-15 16:18:08 -07001202 // TODO: Reject quads outside of the clip
1203 TextureVertex::set(mesh++, r->left, r->top, u1, v1);
1204 TextureVertex::set(mesh++, r->right, r->top, u2, v1);
1205 TextureVertex::set(mesh++, r->left, r->bottom, u1, v2);
1206 TextureVertex::set(mesh++, r->right, r->bottom, u2, v2);
Romain Guy5b3b3522010-10-27 18:57:51 -07001207
Chris Craik3f0854292014-04-15 16:18:08 -07001208 numQuads++;
Romain Guy5b3b3522010-10-27 18:57:51 -07001209
Chris Craik3f0854292014-04-15 16:18:08 -07001210 if (numQuads >= gMaxNumberOfQuads) {
Chris Craik34416ea2013-04-15 16:08:28 -07001211 DRAW_DOUBLE_STENCIL(glDrawElements(GL_TRIANGLES, numQuads * 6,
1212 GL_UNSIGNED_SHORT, NULL));
Chris Craik3f0854292014-04-15 16:18:08 -07001213 numQuads = 0;
1214 mesh = mCaches.getRegionMesh();
Romain Guy5b3b3522010-10-27 18:57:51 -07001215 }
Chris Craik3f0854292014-04-15 16:18:08 -07001216 }
1217
1218 if (numQuads > 0) {
1219 DRAW_DOUBLE_STENCIL(glDrawElements(GL_TRIANGLES, numQuads * 6,
1220 GL_UNSIGNED_SHORT, NULL));
1221 }
Romain Guy5b3b3522010-10-27 18:57:51 -07001222
Romain Guy5b3b3522010-10-27 18:57:51 -07001223#if DEBUG_LAYERS_AS_REGIONS
Chris Craik3f0854292014-04-15 16:18:08 -07001224 drawRegionRectsDebug(layer->region);
Romain Guy5b3b3522010-10-27 18:57:51 -07001225#endif
1226
Chris Craik3f0854292014-04-15 16:18:08 -07001227 layer->region.clear();
Romain Guy5b3b3522010-10-27 18:57:51 -07001228}
1229
Romain Guy3a3133d2011-02-01 22:59:58 -08001230#if DEBUG_LAYERS_AS_REGIONS
Chris Craike63f7c622013-10-17 10:30:55 -07001231void OpenGLRenderer::drawRegionRectsDebug(const Region& region) {
Romain Guy3a3133d2011-02-01 22:59:58 -08001232 size_t count;
1233 const android::Rect* rects = region.getArray(&count);
1234
1235 uint32_t colors[] = {
1236 0x7fff0000, 0x7f00ff00,
1237 0x7f0000ff, 0x7fff00ff,
1238 };
1239
1240 int offset = 0;
1241 int32_t top = rects[0].top;
1242
1243 for (size_t i = 0; i < count; i++) {
1244 if (top != rects[i].top) {
1245 offset ^= 0x2;
1246 top = rects[i].top;
1247 }
1248
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05001249 SkPaint paint;
1250 paint.setColor(colors[offset + (i & 0x1)]);
Romain Guy3a3133d2011-02-01 22:59:58 -08001251 Rect r(rects[i].left, rects[i].top, rects[i].right, rects[i].bottom);
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05001252 drawColorRect(r.left, r.top, r.right, r.bottom, paint);
Romain Guy3a3133d2011-02-01 22:59:58 -08001253 }
Romain Guy3a3133d2011-02-01 22:59:58 -08001254}
Chris Craike63f7c622013-10-17 10:30:55 -07001255#endif
Romain Guy3a3133d2011-02-01 22:59:58 -08001256
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05001257void OpenGLRenderer::drawRegionRects(const SkRegion& region, const SkPaint& paint, bool dirty) {
Romain Guy8ce00302013-01-15 18:51:42 -08001258 Vector<float> rects;
1259
1260 SkRegion::Iterator it(region);
1261 while (!it.done()) {
1262 const SkIRect& r = it.rect();
1263 rects.push(r.fLeft);
1264 rects.push(r.fTop);
1265 rects.push(r.fRight);
1266 rects.push(r.fBottom);
Romain Guy8ce00302013-01-15 18:51:42 -08001267 it.next();
1268 }
1269
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05001270 drawColorRects(rects.array(), rects.size(), &paint, true, dirty, false);
Romain Guy8ce00302013-01-15 18:51:42 -08001271}
1272
Romain Guy5b3b3522010-10-27 18:57:51 -07001273void OpenGLRenderer::dirtyLayer(const float left, const float top,
1274 const float right, const float bottom, const mat4 transform) {
Romain Guyf219da52011-01-16 12:54:25 -08001275 if (hasLayer()) {
Romain Guy5b3b3522010-10-27 18:57:51 -07001276 Rect bounds(left, top, right, bottom);
1277 transform.mapRect(bounds);
Romain Guyf219da52011-01-16 12:54:25 -08001278 dirtyLayerUnchecked(bounds, getRegion());
Romain Guy5b3b3522010-10-27 18:57:51 -07001279 }
Romain Guy5b3b3522010-10-27 18:57:51 -07001280}
1281
1282void OpenGLRenderer::dirtyLayer(const float left, const float top,
1283 const float right, const float bottom) {
Romain Guyf219da52011-01-16 12:54:25 -08001284 if (hasLayer()) {
Romain Guy5b3b3522010-10-27 18:57:51 -07001285 Rect bounds(left, top, right, bottom);
Romain Guyf219da52011-01-16 12:54:25 -08001286 dirtyLayerUnchecked(bounds, getRegion());
Romain Guy1bd1bad2011-01-14 20:07:20 -08001287 }
Romain Guy1bd1bad2011-01-14 20:07:20 -08001288}
1289
1290void OpenGLRenderer::dirtyLayerUnchecked(Rect& bounds, Region* region) {
Chris Craikd6b65f62014-01-01 14:45:21 -08001291 if (bounds.intersect(*currentClipRect())) {
Romain Guy1bd1bad2011-01-14 20:07:20 -08001292 bounds.snapToPixelBoundaries();
1293 android::Rect dirty(bounds.left, bounds.top, bounds.right, bounds.bottom);
1294 if (!dirty.isEmpty()) {
1295 region->orSelf(dirty);
Romain Guy5b3b3522010-10-27 18:57:51 -07001296 }
1297 }
Romain Guy5b3b3522010-10-27 18:57:51 -07001298}
1299
Chris Craik4063a0e2013-11-15 16:06:56 -08001300void OpenGLRenderer::issueIndexedQuadDraw(Vertex* mesh, GLsizei quadsCount) {
Romain Guy448455f2013-07-22 13:57:50 -07001301 GLsizei elementsCount = quadsCount * 6;
1302 while (elementsCount > 0) {
1303 GLsizei drawCount = min(elementsCount, (GLsizei) gMaxNumberOfQuads * 6);
1304
Romain Guy3380cfd2013-08-15 16:57:57 -07001305 setupDrawIndexedVertices(&mesh[0].x);
Romain Guy448455f2013-07-22 13:57:50 -07001306 glDrawElements(GL_TRIANGLES, drawCount, GL_UNSIGNED_SHORT, NULL);
1307
1308 elementsCount -= drawCount;
1309 // Though there are 4 vertices in a quad, we use 6 indices per
1310 // quad to draw with GL_TRIANGLES
1311 mesh += (drawCount / 6) * 4;
1312 }
1313}
1314
Romain Guy54be1cd2011-06-13 19:04:27 -07001315void OpenGLRenderer::clearLayerRegions() {
1316 const size_t count = mLayers.size();
1317 if (count == 0) return;
1318
Chris Craikd6b65f62014-01-01 14:45:21 -08001319 if (!currentSnapshot()->isIgnored()) {
Chris Craik62d307c2014-07-29 10:35:13 -07001320 EVENT_LOGD("clearLayerRegions");
Romain Guy54be1cd2011-06-13 19:04:27 -07001321 // Doing several glScissor/glClear here can negatively impact
1322 // GPUs with a tiler architecture, instead we draw quads with
1323 // the Clear blending mode
1324
1325 // The list contains bounds that have already been clipped
1326 // against their initial clip rect, and the current clip
1327 // is likely different so we need to disable clipping here
Romain Guy8a4ac612012-07-17 17:32:48 -07001328 bool scissorChanged = mCaches.disableScissor();
Romain Guy54be1cd2011-06-13 19:04:27 -07001329
Romain Guy448455f2013-07-22 13:57:50 -07001330 Vertex mesh[count * 4];
Romain Guy54be1cd2011-06-13 19:04:27 -07001331 Vertex* vertex = mesh;
1332
1333 for (uint32_t i = 0; i < count; i++) {
1334 Rect* bounds = mLayers.itemAt(i);
1335
Romain Guy54be1cd2011-06-13 19:04:27 -07001336 Vertex::set(vertex++, bounds->left, bounds->top);
1337 Vertex::set(vertex++, bounds->right, bounds->top);
1338 Vertex::set(vertex++, bounds->left, bounds->bottom);
Romain Guy54be1cd2011-06-13 19:04:27 -07001339 Vertex::set(vertex++, bounds->right, bounds->bottom);
1340
1341 delete bounds;
1342 }
Romain Guye67307c2013-02-11 18:01:20 -08001343 // We must clear the list of dirty rects before we
1344 // call setupDraw() to prevent stencil setup to do
1345 // the same thing again
1346 mLayers.clear();
Romain Guy54be1cd2011-06-13 19:04:27 -07001347
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05001348 SkPaint clearPaint;
1349 clearPaint.setXfermodeMode(SkXfermode::kClear_Mode);
1350
Romain Guy54be1cd2011-06-13 19:04:27 -07001351 setupDraw(false);
1352 setupDrawColor(0.0f, 0.0f, 0.0f, 1.0f);
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05001353 setupDrawBlending(&clearPaint, true);
Romain Guy54be1cd2011-06-13 19:04:27 -07001354 setupDrawProgram();
1355 setupDrawPureColorUniforms();
Chris Craik4063a0e2013-11-15 16:06:56 -08001356 setupDrawModelView(kModelViewMode_Translate, false,
1357 0.0f, 0.0f, 0.0f, 0.0f, true);
Romain Guy54be1cd2011-06-13 19:04:27 -07001358
Chris Craik4063a0e2013-11-15 16:06:56 -08001359 issueIndexedQuadDraw(&mesh[0], count);
Romain Guy8a4ac612012-07-17 17:32:48 -07001360
1361 if (scissorChanged) mCaches.enableScissor();
Romain Guy54be1cd2011-06-13 19:04:27 -07001362 } else {
1363 for (uint32_t i = 0; i < count; i++) {
1364 delete mLayers.itemAt(i);
1365 }
Romain Guye67307c2013-02-11 18:01:20 -08001366 mLayers.clear();
Romain Guy54be1cd2011-06-13 19:04:27 -07001367 }
Romain Guy54be1cd2011-06-13 19:04:27 -07001368}
1369
Romain Guybd6b79b2010-06-26 00:13:53 -07001370///////////////////////////////////////////////////////////////////////////////
Chris Craikc3566d02013-02-04 16:16:33 -08001371// State Deferral
1372///////////////////////////////////////////////////////////////////////////////
1373
Chris Craikff785832013-03-08 13:12:16 -08001374bool OpenGLRenderer::storeDisplayState(DeferredDisplayState& state, int stateDeferFlags) {
Chris Craikd6b65f62014-01-01 14:45:21 -08001375 const Rect* currentClip = currentClipRect();
1376 const mat4* currentMatrix = currentTransform();
Chris Craikc3566d02013-02-04 16:16:33 -08001377
Chris Craikff785832013-03-08 13:12:16 -08001378 if (stateDeferFlags & kStateDeferFlag_Draw) {
1379 // state has bounds initialized in local coordinates
1380 if (!state.mBounds.isEmpty()) {
Chris Craikd6b65f62014-01-01 14:45:21 -08001381 currentMatrix->mapRect(state.mBounds);
Chris Craik28ce94a2013-05-31 11:38:03 -07001382 Rect clippedBounds(state.mBounds);
Chris Craik5e49b302013-07-30 19:05:20 -07001383 // NOTE: if we ever want to use this clipping info to drive whether the scissor
1384 // is used, it should more closely duplicate the quickReject logic (in how it uses
1385 // snapToPixelBoundaries)
1386
Chris Craikd6b65f62014-01-01 14:45:21 -08001387 if(!clippedBounds.intersect(*currentClip)) {
Chris Craikff785832013-03-08 13:12:16 -08001388 // quick rejected
1389 return true;
1390 }
Chris Craik28ce94a2013-05-31 11:38:03 -07001391
Chris Craika02c4ed2013-06-14 13:43:58 -07001392 state.mClipSideFlags = kClipSide_None;
Chris Craikd6b65f62014-01-01 14:45:21 -08001393 if (!currentClip->contains(state.mBounds)) {
Chris Craik28ce94a2013-05-31 11:38:03 -07001394 int& flags = state.mClipSideFlags;
1395 // op partially clipped, so record which sides are clipped for clip-aware merging
Chris Craikd6b65f62014-01-01 14:45:21 -08001396 if (currentClip->left > state.mBounds.left) flags |= kClipSide_Left;
1397 if (currentClip->top > state.mBounds.top) flags |= kClipSide_Top;
1398 if (currentClip->right < state.mBounds.right) flags |= kClipSide_Right;
1399 if (currentClip->bottom < state.mBounds.bottom) flags |= kClipSide_Bottom;
Chris Craik28ce94a2013-05-31 11:38:03 -07001400 }
1401 state.mBounds.set(clippedBounds);
Chris Craikff785832013-03-08 13:12:16 -08001402 } else {
Chris Craikd72b73c2013-06-17 13:52:06 -07001403 // Empty bounds implies size unknown. Label op as conservatively clipped to disable
1404 // overdraw avoidance (since we don't know what it overlaps)
1405 state.mClipSideFlags = kClipSide_ConservativeFull;
Chris Craikd6b65f62014-01-01 14:45:21 -08001406 state.mBounds.set(*currentClip);
Chris Craikc3566d02013-02-04 16:16:33 -08001407 }
1408 }
1409
Chris Craik527a3aa2013-03-04 10:19:31 -08001410 state.mClipValid = (stateDeferFlags & kStateDeferFlag_Clip);
1411 if (state.mClipValid) {
Chris Craikd6b65f62014-01-01 14:45:21 -08001412 state.mClip.set(*currentClip);
Chris Craikff785832013-03-08 13:12:16 -08001413 }
1414
Chris Craik7273daa2013-03-28 11:25:24 -07001415 // Transform, drawModifiers, and alpha always deferred, since they are used by state operations
1416 // (Note: saveLayer/restore use colorFilter and alpha, so we just save restore everything)
Chris Craikd6b65f62014-01-01 14:45:21 -08001417 state.mMatrix.load(*currentMatrix);
Chris Craik7273daa2013-03-28 11:25:24 -07001418 state.mDrawModifiers = mDrawModifiers;
Chris Craikd6b65f62014-01-01 14:45:21 -08001419 state.mAlpha = currentSnapshot()->alpha;
Chris Craikdeeda3d2014-05-05 19:09:33 -07001420
1421 // always store/restore, since it's just a pointer
1422 state.mRoundRectClipState = currentSnapshot()->roundRectClipState;
Chris Craikc3566d02013-02-04 16:16:33 -08001423 return false;
1424}
1425
Chris Craik527a3aa2013-03-04 10:19:31 -08001426void OpenGLRenderer::restoreDisplayState(const DeferredDisplayState& state, bool skipClipRestore) {
Chris Craik14e51302013-12-30 15:32:54 -08001427 setMatrix(state.mMatrix);
Chris Craik7273daa2013-03-28 11:25:24 -07001428 mSnapshot->alpha = state.mAlpha;
Chris Craik14e51302013-12-30 15:32:54 -08001429 mDrawModifiers = state.mDrawModifiers;
Chris Craikdeeda3d2014-05-05 19:09:33 -07001430 mSnapshot->roundRectClipState = state.mRoundRectClipState;
Chris Craikff785832013-03-08 13:12:16 -08001431
Chris Craik527a3aa2013-03-04 10:19:31 -08001432 if (state.mClipValid && !skipClipRestore) {
Chris Craik28ce94a2013-05-31 11:38:03 -07001433 mSnapshot->setClip(state.mClip.left, state.mClip.top,
1434 state.mClip.right, state.mClip.bottom);
Chris Craikff785832013-03-08 13:12:16 -08001435 dirtyClip();
1436 }
Chris Craikc3566d02013-02-04 16:16:33 -08001437}
1438
Chris Craik28ce94a2013-05-31 11:38:03 -07001439/**
1440 * Merged multidraw (such as in drawText and drawBitmaps rely on the fact that no clipping is done
1441 * in the draw path. Instead, clipping is done ahead of time - either as a single clip rect (when at
1442 * least one op is clipped), or disabled entirely (because no merged op is clipped)
1443 *
1444 * This method should be called when restoreDisplayState() won't be restoring the clip
1445 */
1446void OpenGLRenderer::setupMergedMultiDraw(const Rect* clipRect) {
1447 if (clipRect != NULL) {
1448 mSnapshot->setClip(clipRect->left, clipRect->top, clipRect->right, clipRect->bottom);
1449 } else {
Chris Craik14e51302013-12-30 15:32:54 -08001450 mSnapshot->setClip(0, 0, getWidth(), getHeight());
Chris Craik28ce94a2013-05-31 11:38:03 -07001451 }
Chris Craik527a3aa2013-03-04 10:19:31 -08001452 dirtyClip();
Chris Craik28ce94a2013-05-31 11:38:03 -07001453 mCaches.setScissorEnabled(clipRect != NULL || mScissorOptimizationDisabled);
Chris Craik527a3aa2013-03-04 10:19:31 -08001454}
1455
Chris Craikc3566d02013-02-04 16:16:33 -08001456///////////////////////////////////////////////////////////////////////////////
Romain Guyf6a11b82010-06-23 17:47:49 -07001457// Clipping
1458///////////////////////////////////////////////////////////////////////////////
1459
Romain Guybb9524b2010-06-22 18:56:38 -07001460void OpenGLRenderer::setScissorFromClip() {
Chris Craikd6b65f62014-01-01 14:45:21 -08001461 Rect clip(*currentClipRect());
Romain Guye5ebcb02010-10-15 13:57:28 -07001462 clip.snapToPixelBoundaries();
Romain Guy8f85e802011-12-14 19:23:32 -08001463
Chris Craika64a2be2014-05-14 14:17:01 -07001464 if (mCaches.setScissor(clip.left, getViewportHeight() - clip.bottom,
Romain Guy8a4ac612012-07-17 17:32:48 -07001465 clip.getWidth(), clip.getHeight())) {
1466 mDirtyClip = false;
1467 }
Romain Guy9d5316e2010-06-24 19:30:36 -07001468}
1469
Romain Guy8ce00302013-01-15 18:51:42 -08001470void OpenGLRenderer::ensureStencilBuffer() {
1471 // Thanks to the mismatch between EGL and OpenGL ES FBO we
1472 // cannot attach a stencil buffer to fbo0 dynamically. Let's
1473 // just hope we have one when hasLayer() returns false.
1474 if (hasLayer()) {
Chris Craikd6b65f62014-01-01 14:45:21 -08001475 attachStencilBufferToLayer(currentSnapshot()->layer);
Romain Guy8ce00302013-01-15 18:51:42 -08001476 }
1477}
1478
1479void OpenGLRenderer::attachStencilBufferToLayer(Layer* layer) {
1480 // The layer's FBO is already bound when we reach this stage
1481 if (!layer->getStencilRenderBuffer()) {
Romain Guyc3fedaf2013-01-29 17:26:25 -08001482 // GL_QCOM_tiled_rendering doesn't like it if a renderbuffer
1483 // is attached after we initiated tiling. We must turn it off,
1484 // attach the new render buffer then turn tiling back on
1485 endTiling();
1486
Romain Guy8d4aeb72013-02-12 16:08:55 -08001487 RenderBuffer* buffer = mCaches.renderBufferCache.get(
Romain Guy3bbacf22013-02-06 16:51:04 -08001488 Stencil::getSmallestStencilFormat(), layer->getWidth(), layer->getHeight());
Romain Guy8ce00302013-01-15 18:51:42 -08001489 layer->setStencilRenderBuffer(buffer);
Romain Guyc3fedaf2013-01-29 17:26:25 -08001490
Romain Guyf735c8e2013-01-31 17:45:55 -08001491 startTiling(layer->clipRect, layer->layer.getHeight());
Romain Guy8ce00302013-01-15 18:51:42 -08001492 }
1493}
1494
1495void OpenGLRenderer::setStencilFromClip() {
1496 if (!mCaches.debugOverdraw) {
Chris Craikd6b65f62014-01-01 14:45:21 -08001497 if (!currentSnapshot()->clipRegion->isEmpty()) {
Chris Craik62d307c2014-07-29 10:35:13 -07001498 EVENT_LOGD("setStencilFromClip - enabling");
1499
Romain Guy8ce00302013-01-15 18:51:42 -08001500 // NOTE: The order here is important, we must set dirtyClip to false
1501 // before any draw call to avoid calling back into this method
1502 mDirtyClip = false;
1503
1504 ensureStencilBuffer();
1505
1506 mCaches.stencil.enableWrite();
1507
Chris Craikdeeda3d2014-05-05 19:09:33 -07001508 // Clear and update the stencil, but first make sure we restrict drawing
Romain Guy8ce00302013-01-15 18:51:42 -08001509 // to the region's bounds
1510 bool resetScissor = mCaches.enableScissor();
1511 if (resetScissor) {
1512 // The scissor was not set so we now need to update it
1513 setScissorFromClip();
1514 }
1515 mCaches.stencil.clear();
Chris Craikdeeda3d2014-05-05 19:09:33 -07001516
1517 // stash and disable the outline clip state, since stencil doesn't account for outline
1518 bool storedSkipOutlineClip = mSkipOutlineClip;
1519 mSkipOutlineClip = true;
Romain Guy8ce00302013-01-15 18:51:42 -08001520
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05001521 SkPaint paint;
Chris Craik98d608d2014-07-17 12:25:11 -07001522 paint.setColor(SK_ColorBLACK);
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05001523 paint.setXfermodeMode(SkXfermode::kSrc_Mode);
1524
Romain Guy8ce00302013-01-15 18:51:42 -08001525 // NOTE: We could use the region contour path to generate a smaller mesh
1526 // Since we are using the stencil we could use the red book path
1527 // drawing technique. It might increase bandwidth usage though.
1528
1529 // The last parameter is important: we are not drawing in the color buffer
1530 // so we don't want to dirty the current layer, if any
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05001531 drawRegionRects(*(currentSnapshot()->clipRegion), paint, false);
Chris Craikdeeda3d2014-05-05 19:09:33 -07001532 if (resetScissor) mCaches.disableScissor();
1533 mSkipOutlineClip = storedSkipOutlineClip;
Romain Guy8ce00302013-01-15 18:51:42 -08001534
1535 mCaches.stencil.enableTest();
Romain Guy3ff0bfd2013-02-25 14:15:37 -08001536
1537 // Draw the region used to generate the stencil if the appropriate debug
1538 // mode is enabled
1539 if (mCaches.debugStencilClip == Caches::kStencilShowRegion) {
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05001540 paint.setColor(0x7f0000ff);
1541 paint.setXfermodeMode(SkXfermode::kSrcOver_Mode);
1542 drawRegionRects(*(currentSnapshot()->clipRegion), paint);
Romain Guy3ff0bfd2013-02-25 14:15:37 -08001543 }
Romain Guy8ce00302013-01-15 18:51:42 -08001544 } else {
Chris Craik62d307c2014-07-29 10:35:13 -07001545 EVENT_LOGD("setStencilFromClip - disabling");
Romain Guy8ce00302013-01-15 18:51:42 -08001546 mCaches.stencil.disable();
1547 }
1548 }
1549}
1550
Chris Craikf0a59072013-11-19 18:00:46 -08001551/**
1552 * Returns false and sets scissor enable based upon bounds if drawing won't be clipped out.
1553 *
1554 * @param paint if not null, the bounds will be expanded to account for stroke depending on paint
1555 * style, and tessellated AA ramp
1556 */
1557bool OpenGLRenderer::quickRejectSetupScissor(float left, float top, float right, float bottom,
Chris Craikd218a922014-01-02 17:13:34 -08001558 const SkPaint* paint) {
Chris Craikf0a59072013-11-19 18:00:46 -08001559 bool snapOut = paint && paint->isAntiAlias();
1560
1561 if (paint && paint->getStyle() != SkPaint::kFill_Style) {
1562 float outset = paint->getStrokeWidth() * 0.5f;
1563 left -= outset;
1564 top -= outset;
1565 right += outset;
1566 bottom += outset;
1567 }
1568
Chris Craikdeeda3d2014-05-05 19:09:33 -07001569 bool clipRequired = false;
1570 bool roundRectClipRequired = false;
1571 if (calculateQuickRejectForScissor(left, top, right, bottom,
1572 &clipRequired, &roundRectClipRequired, snapOut)) {
Romain Guydbc26d22010-10-11 17:58:29 -07001573 return true;
1574 }
1575
Chris Craikf23b25a2014-06-26 15:46:20 -07001576 // not quick rejected, so enable the scissor if clipRequired
1577 mCaches.setScissorEnabled(mScissorOptimizationDisabled || clipRequired);
1578 mSkipOutlineClip = !roundRectClipRequired;
Chris Craik39a908c2013-06-13 14:39:01 -07001579 return false;
Romain Guyc7d53492010-06-25 13:41:57 -07001580}
1581
Romain Guy8ce00302013-01-15 18:51:42 -08001582void OpenGLRenderer::debugClip() {
1583#if DEBUG_CLIP_REGIONS
Chris Craikf23b25a2014-06-26 15:46:20 -07001584 if (!currentSnapshot()->clipRegion->isEmpty()) {
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05001585 SkPaint paint;
1586 paint.setColor(0x7f00ff00);
1587 drawRegionRects(*(currentSnapshot()->clipRegion, paint);
1588
Romain Guy8ce00302013-01-15 18:51:42 -08001589 }
1590#endif
1591}
1592
Romain Guyf6a11b82010-06-23 17:47:49 -07001593///////////////////////////////////////////////////////////////////////////////
Romain Guy70ca14e2010-12-13 18:24:33 -08001594// Drawing commands
1595///////////////////////////////////////////////////////////////////////////////
1596
Chris Craik62d307c2014-07-29 10:35:13 -07001597void OpenGLRenderer::setupDraw(bool clearLayer) {
Chris Craikf0a59072013-11-19 18:00:46 -08001598 // TODO: It would be best if we could do this before quickRejectSetupScissor()
Romain Guy8a4ac612012-07-17 17:32:48 -07001599 // changes the scissor test state
Chris Craik62d307c2014-07-29 10:35:13 -07001600 if (clearLayer) clearLayerRegions();
Romain Guy8ce00302013-01-15 18:51:42 -08001601 // Make sure setScissor & setStencil happen at the beginning of
1602 // this method
Chris Craikb98a0162013-02-21 11:30:22 -08001603 if (mDirtyClip) {
1604 if (mCaches.scissorEnabled) {
1605 setScissorFromClip();
1606 }
Chris Craik62d307c2014-07-29 10:35:13 -07001607
1608 if (clearLayer) {
1609 setStencilFromClip();
1610 } else {
1611 // While clearing layer, force disable stencil buffer, since
1612 // it's invalid to stencil-clip *during* the layer clear
1613 mCaches.stencil.disable();
1614 }
Romain Guy70ca14e2010-12-13 18:24:33 -08001615 }
Romain Guy3ff0bfd2013-02-25 14:15:37 -08001616
Romain Guy70ca14e2010-12-13 18:24:33 -08001617 mDescription.reset();
Romain Guy3ff0bfd2013-02-25 14:15:37 -08001618
Romain Guy70ca14e2010-12-13 18:24:33 -08001619 mSetShaderColor = false;
1620 mColorSet = false;
1621 mColorA = mColorR = mColorG = mColorB = 0.0f;
1622 mTextureUnit = 0;
1623 mTrackDirtyRegions = true;
Romain Guy3ff0bfd2013-02-25 14:15:37 -08001624
1625 // Enable debug highlight when what we're about to draw is tested against
1626 // the stencil buffer and if stencil highlight debugging is on
1627 mDescription.hasDebugHighlight = !mCaches.debugOverdraw &&
1628 mCaches.debugStencilClip == Caches::kStencilShowHighlight &&
1629 mCaches.stencil.isTestEnabled();
Romain Guy70ca14e2010-12-13 18:24:33 -08001630}
1631
1632void OpenGLRenderer::setupDrawWithTexture(bool isAlpha8) {
1633 mDescription.hasTexture = true;
1634 mDescription.hasAlpha8Texture = isAlpha8;
1635}
1636
Romain Guyff316ec2013-02-13 18:39:43 -08001637void OpenGLRenderer::setupDrawWithTextureAndColor(bool isAlpha8) {
1638 mDescription.hasTexture = true;
1639 mDescription.hasColors = true;
1640 mDescription.hasAlpha8Texture = isAlpha8;
1641}
1642
Romain Guyaa6c24c2011-04-28 18:40:04 -07001643void OpenGLRenderer::setupDrawWithExternalTexture() {
1644 mDescription.hasExternalTexture = true;
1645}
1646
Romain Guy15bc6432011-12-13 13:11:32 -08001647void OpenGLRenderer::setupDrawNoTexture() {
Romain Guyff316ec2013-02-13 18:39:43 -08001648 mCaches.disableTexCoordsVertexArray();
Romain Guy15bc6432011-12-13 13:11:32 -08001649}
1650
Chris Craik91a8c7c2014-08-12 14:31:35 -07001651void OpenGLRenderer::setupDrawVertexAlpha(bool useShadowAlphaInterp) {
1652 mDescription.hasVertexAlpha = true;
1653 mDescription.useShadowAlphaInterp = useShadowAlphaInterp;
Chet Haase5b0200b2011-04-13 17:58:08 -07001654}
1655
Romain Guy8d0d4782010-12-14 20:13:35 -08001656void OpenGLRenderer::setupDrawColor(int color, int alpha) {
1657 mColorA = alpha / 255.0f;
Romain Guy886b2752013-01-04 12:26:18 -08001658 mColorR = mColorA * ((color >> 16) & 0xFF) / 255.0f;
1659 mColorG = mColorA * ((color >> 8) & 0xFF) / 255.0f;
1660 mColorB = mColorA * ((color ) & 0xFF) / 255.0f;
Romain Guy70ca14e2010-12-13 18:24:33 -08001661 mColorSet = true;
Chris Craike63f7c622013-10-17 10:30:55 -07001662 mSetShaderColor = mDescription.setColorModulate(mColorA);
Romain Guy70ca14e2010-12-13 18:24:33 -08001663}
1664
Romain Guy86568192010-12-14 15:55:39 -08001665void OpenGLRenderer::setupDrawAlpha8Color(int color, int alpha) {
1666 mColorA = alpha / 255.0f;
Romain Guy886b2752013-01-04 12:26:18 -08001667 mColorR = mColorA * ((color >> 16) & 0xFF) / 255.0f;
1668 mColorG = mColorA * ((color >> 8) & 0xFF) / 255.0f;
1669 mColorB = mColorA * ((color ) & 0xFF) / 255.0f;
Romain Guy86568192010-12-14 15:55:39 -08001670 mColorSet = true;
Chris Craike63f7c622013-10-17 10:30:55 -07001671 mSetShaderColor = mDescription.setAlpha8ColorModulate(mColorR, mColorG, mColorB, mColorA);
Romain Guy86568192010-12-14 15:55:39 -08001672}
1673
Romain Guy41210632012-07-16 17:04:24 -07001674void OpenGLRenderer::setupDrawTextGamma(const SkPaint* paint) {
1675 mCaches.fontRenderer->describe(mDescription, paint);
1676}
1677
Romain Guy70ca14e2010-12-13 18:24:33 -08001678void OpenGLRenderer::setupDrawColor(float r, float g, float b, float a) {
1679 mColorA = a;
1680 mColorR = r;
1681 mColorG = g;
1682 mColorB = b;
1683 mColorSet = true;
Chris Craike63f7c622013-10-17 10:30:55 -07001684 mSetShaderColor = mDescription.setColorModulate(a);
Romain Guy70ca14e2010-12-13 18:24:33 -08001685}
1686
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04001687void OpenGLRenderer::setupDrawShader(const SkShader* shader) {
1688 if (shader != NULL) {
1689 SkiaShader::describe(&mCaches, mDescription, mExtensions, *shader);
Romain Guy70ca14e2010-12-13 18:24:33 -08001690 }
1691}
1692
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05001693void OpenGLRenderer::setupDrawColorFilter(const SkColorFilter* filter) {
1694 if (filter == NULL) {
1695 return;
1696 }
1697
1698 SkXfermode::Mode mode;
1699 if (filter->asColorMode(NULL, &mode)) {
1700 mDescription.colorOp = ProgramDescription::kColorBlend;
1701 mDescription.colorMode = mode;
1702 } else if (filter->asColorMatrix(NULL)) {
1703 mDescription.colorOp = ProgramDescription::kColorMatrix;
Romain Guy70ca14e2010-12-13 18:24:33 -08001704 }
1705}
1706
Romain Guyf09ef512011-05-27 11:43:46 -07001707void OpenGLRenderer::accountForClear(SkXfermode::Mode mode) {
1708 if (mColorSet && mode == SkXfermode::kClear_Mode) {
1709 mColorA = 1.0f;
1710 mColorR = mColorG = mColorB = 0.0f;
Romain Guy54be1cd2011-06-13 19:04:27 -07001711 mSetShaderColor = mDescription.modulate = true;
Romain Guyf09ef512011-05-27 11:43:46 -07001712 }
1713}
1714
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05001715void OpenGLRenderer::setupDrawBlending(const Layer* layer, bool swapSrcDst) {
1716 SkXfermode::Mode mode = layer->getMode();
Romain Guyf09ef512011-05-27 11:43:46 -07001717 // When the blending mode is kClear_Mode, we need to use a modulate color
1718 // argb=1,0,0,0
1719 accountForClear(mode);
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04001720 // TODO: check shader blending, once we have shader drawing support for layers.
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05001721 bool blend = layer->isBlend() || getLayerAlpha(layer) < 1.0f ||
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04001722 (mColorSet && mColorA < 1.0f) || isBlendedColorFilter(layer->getColorFilter());
Chris Craikc3566d02013-02-04 16:16:33 -08001723 chooseBlending(blend, mode, mDescription, swapSrcDst);
Romain Guy70ca14e2010-12-13 18:24:33 -08001724}
1725
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05001726void OpenGLRenderer::setupDrawBlending(const SkPaint* paint, bool blend, bool swapSrcDst) {
1727 SkXfermode::Mode mode = getXfermodeDirect(paint);
Romain Guyf09ef512011-05-27 11:43:46 -07001728 // When the blending mode is kClear_Mode, we need to use a modulate color
1729 // argb=1,0,0,0
1730 accountForClear(mode);
Chris Craikc3566d02013-02-04 16:16:33 -08001731 blend |= (mColorSet && mColorA < 1.0f) ||
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04001732 (getShader(paint) && !getShader(paint)->isOpaque()) ||
1733 isBlendedColorFilter(getColorFilter(paint));
Chris Craikc3566d02013-02-04 16:16:33 -08001734 chooseBlending(blend, mode, mDescription, swapSrcDst);
Romain Guy70ca14e2010-12-13 18:24:33 -08001735}
1736
1737void OpenGLRenderer::setupDrawProgram() {
1738 useProgram(mCaches.programCache.get(mDescription));
Chris Craikdeeda3d2014-05-05 19:09:33 -07001739 if (mDescription.hasRoundRectClip) {
1740 // TODO: avoid doing this repeatedly, stashing state pointer in program
1741 const RoundRectClipState* state = mSnapshot->roundRectClipState;
Chris Craikaf4d04c2014-07-29 12:50:14 -07001742 const Rect& innerRect = state->innerRect;
Chris Craikdeeda3d2014-05-05 19:09:33 -07001743 glUniform4f(mCaches.currentProgram->getUniform("roundRectInnerRectLTRB"),
Chris Craikaf4d04c2014-07-29 12:50:14 -07001744 innerRect.left, innerRect.top,
1745 innerRect.right, innerRect.bottom);
Chris Craikdeeda3d2014-05-05 19:09:33 -07001746 glUniformMatrix4fv(mCaches.currentProgram->getUniform("roundRectInvTransform"),
1747 1, GL_FALSE, &state->matrix.data[0]);
Chris Craik4340c262014-09-11 18:58:45 -07001748
1749 // add half pixel to round out integer rect space to cover pixel centers
1750 float roundedOutRadius = state->radius + 0.5f;
1751 glUniform1f(mCaches.currentProgram->getUniform("roundRectRadius"),
1752 roundedOutRadius);
Chris Craikdeeda3d2014-05-05 19:09:33 -07001753 }
Romain Guy70ca14e2010-12-13 18:24:33 -08001754}
1755
1756void OpenGLRenderer::setupDrawDirtyRegionsDisabled() {
1757 mTrackDirtyRegions = false;
1758}
1759
Chris Craik4063a0e2013-11-15 16:06:56 -08001760void OpenGLRenderer::setupDrawModelView(ModelViewMode mode, bool offset,
1761 float left, float top, float right, float bottom, bool ignoreTransform) {
Chris Craike10e8272014-05-08 14:28:26 -07001762 mModelViewMatrix.loadTranslate(left, top, 0.0f);
Chris Craik4063a0e2013-11-15 16:06:56 -08001763 if (mode == kModelViewMode_TranslateAndScale) {
Chris Craike10e8272014-05-08 14:28:26 -07001764 mModelViewMatrix.scale(right - left, bottom - top, 1.0f);
Romain Guy70ca14e2010-12-13 18:24:33 -08001765 }
Chris Craik4063a0e2013-11-15 16:06:56 -08001766
Romain Guy86568192010-12-14 15:55:39 -08001767 bool dirty = right - left > 0.0f && bottom - top > 0.0f;
Chris Craika64a2be2014-05-14 14:17:01 -07001768 const Matrix4& transformMatrix = ignoreTransform ? Matrix4::identity() : *currentTransform();
1769 mCaches.currentProgram->set(mSnapshot->getOrthoMatrix(), mModelViewMatrix, transformMatrix, offset);
1770 if (dirty && mTrackDirtyRegions) {
1771 if (!ignoreTransform) {
1772 dirtyLayer(left, top, right, bottom, *currentTransform());
1773 } else {
1774 dirtyLayer(left, top, right, bottom);
1775 }
Romain Guy86568192010-12-14 15:55:39 -08001776 }
Romain Guy70ca14e2010-12-13 18:24:33 -08001777}
1778
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04001779void OpenGLRenderer::setupDrawColorUniforms(bool hasShader) {
1780 if ((mColorSet && !hasShader) || (hasShader && mSetShaderColor)) {
Romain Guy70ca14e2010-12-13 18:24:33 -08001781 mCaches.currentProgram->setColor(mColorR, mColorG, mColorB, mColorA);
1782 }
1783}
1784
Romain Guy86568192010-12-14 15:55:39 -08001785void OpenGLRenderer::setupDrawPureColorUniforms() {
Romain Guy55368412010-12-14 10:59:41 -08001786 if (mSetShaderColor) {
Romain Guy86568192010-12-14 15:55:39 -08001787 mCaches.currentProgram->setColor(mColorR, mColorG, mColorB, mColorA);
Romain Guy55368412010-12-14 10:59:41 -08001788 }
1789}
1790
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04001791void OpenGLRenderer::setupDrawShaderUniforms(const SkShader* shader, bool ignoreTransform) {
1792 if (shader == NULL) {
1793 return;
Romain Guy70ca14e2010-12-13 18:24:33 -08001794 }
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04001795
1796 if (ignoreTransform) {
1797 // if ignoreTransform=true was passed to setupDrawModelView, undo currentTransform()
1798 // because it was built into modelView / the geometry, and the description needs to
1799 // compensate.
1800 mat4 modelViewWithoutTransform;
1801 modelViewWithoutTransform.loadInverse(*currentTransform());
1802 modelViewWithoutTransform.multiply(mModelViewMatrix);
1803 mModelViewMatrix.load(modelViewWithoutTransform);
1804 }
1805
1806 SkiaShader::setupProgram(&mCaches, mModelViewMatrix, &mTextureUnit, mExtensions, *shader);
Romain Guy70ca14e2010-12-13 18:24:33 -08001807}
1808
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05001809void OpenGLRenderer::setupDrawColorFilterUniforms(const SkColorFilter* filter) {
1810 if (NULL == filter) {
1811 return;
Romain Guy70ca14e2010-12-13 18:24:33 -08001812 }
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05001813
1814 SkColor color;
1815 SkXfermode::Mode mode;
1816 if (filter->asColorMode(&color, &mode)) {
1817 const int alpha = SkColorGetA(color);
1818 const GLfloat a = alpha / 255.0f;
1819 const GLfloat r = a * SkColorGetR(color) / 255.0f;
1820 const GLfloat g = a * SkColorGetG(color) / 255.0f;
1821 const GLfloat b = a * SkColorGetB(color) / 255.0f;
1822 glUniform4f(mCaches.currentProgram->getUniform("colorBlend"), r, g, b, a);
1823 return;
1824 }
1825
1826 SkScalar srcColorMatrix[20];
1827 if (filter->asColorMatrix(srcColorMatrix)) {
1828
1829 float colorMatrix[16];
1830 memcpy(colorMatrix, srcColorMatrix, 4 * sizeof(float));
1831 memcpy(&colorMatrix[4], &srcColorMatrix[5], 4 * sizeof(float));
1832 memcpy(&colorMatrix[8], &srcColorMatrix[10], 4 * sizeof(float));
1833 memcpy(&colorMatrix[12], &srcColorMatrix[15], 4 * sizeof(float));
1834
1835 // Skia uses the range [0..255] for the addition vector, but we need
1836 // the [0..1] range to apply the vector in GLSL
1837 float colorVector[4];
1838 colorVector[0] = srcColorMatrix[4] / 255.0f;
1839 colorVector[1] = srcColorMatrix[9] / 255.0f;
1840 colorVector[2] = srcColorMatrix[14] / 255.0f;
1841 colorVector[3] = srcColorMatrix[19] / 255.0f;
1842
1843 glUniformMatrix4fv(mCaches.currentProgram->getUniform("colorMatrix"), 1,
1844 GL_FALSE, colorMatrix);
1845 glUniform4fv(mCaches.currentProgram->getUniform("colorMatrixVector"), 1, colorVector);
1846 return;
1847 }
1848
1849 // it is an error if we ever get here
Romain Guy70ca14e2010-12-13 18:24:33 -08001850}
1851
Romain Guy41210632012-07-16 17:04:24 -07001852void OpenGLRenderer::setupDrawTextGammaUniforms() {
1853 mCaches.fontRenderer->setupProgram(mDescription, mCaches.currentProgram);
1854}
1855
Romain Guy70ca14e2010-12-13 18:24:33 -08001856void OpenGLRenderer::setupDrawSimpleMesh() {
Romain Guyf3a910b42011-12-12 20:35:21 -08001857 bool force = mCaches.bindMeshBuffer();
Chris Craikcb4d6002012-09-25 12:00:29 -07001858 mCaches.bindPositionVertexPointer(force, 0);
Romain Guy15bc6432011-12-13 13:11:32 -08001859 mCaches.unbindIndicesBuffer();
Romain Guy70ca14e2010-12-13 18:24:33 -08001860}
1861
1862void OpenGLRenderer::setupDrawTexture(GLuint texture) {
Romain Guy257ae352013-03-20 16:31:12 -07001863 if (texture) bindTexture(texture);
Romain Guy2d4fd362011-12-13 22:00:19 -08001864 mTextureUnit++;
Romain Guy15bc6432011-12-13 13:11:32 -08001865 mCaches.enableTexCoordsVertexArray();
Romain Guy70ca14e2010-12-13 18:24:33 -08001866}
1867
Romain Guyaa6c24c2011-04-28 18:40:04 -07001868void OpenGLRenderer::setupDrawExternalTexture(GLuint texture) {
1869 bindExternalTexture(texture);
Romain Guy2d4fd362011-12-13 22:00:19 -08001870 mTextureUnit++;
Romain Guy15bc6432011-12-13 13:11:32 -08001871 mCaches.enableTexCoordsVertexArray();
Romain Guyaa6c24c2011-04-28 18:40:04 -07001872}
1873
Romain Guy8f0095c2011-05-02 17:24:22 -07001874void OpenGLRenderer::setupDrawTextureTransform() {
1875 mDescription.hasTextureTransform = true;
1876}
1877
1878void OpenGLRenderer::setupDrawTextureTransformUniforms(mat4& transform) {
Romain Guyaa6c24c2011-04-28 18:40:04 -07001879 glUniformMatrix4fv(mCaches.currentProgram->getUniform("mainTextureTransform"), 1,
1880 GL_FALSE, &transform.data[0]);
1881}
1882
Chris Craik564acf72014-01-02 16:46:18 -08001883void OpenGLRenderer::setupDrawMesh(const GLvoid* vertices,
1884 const GLvoid* texCoords, GLuint vbo) {
Romain Guyf3a910b42011-12-12 20:35:21 -08001885 bool force = false;
Romain Guy3b748a42013-04-17 18:54:38 -07001886 if (!vertices || vbo) {
Romain Guyf3a910b42011-12-12 20:35:21 -08001887 force = mCaches.bindMeshBuffer(vbo == 0 ? mCaches.meshBuffer : vbo);
Romain Guy70ca14e2010-12-13 18:24:33 -08001888 } else {
Romain Guyf3a910b42011-12-12 20:35:21 -08001889 force = mCaches.unbindMeshBuffer();
Romain Guy70ca14e2010-12-13 18:24:33 -08001890 }
Romain Guyd71dd362011-12-12 19:03:35 -08001891
Chris Craikcb4d6002012-09-25 12:00:29 -07001892 mCaches.bindPositionVertexPointer(force, vertices);
Romain Guy15bc6432011-12-13 13:11:32 -08001893 if (mCaches.currentProgram->texCoords >= 0) {
Chris Craikcb4d6002012-09-25 12:00:29 -07001894 mCaches.bindTexCoordsVertexPointer(force, texCoords);
Romain Guy15bc6432011-12-13 13:11:32 -08001895 }
1896
1897 mCaches.unbindIndicesBuffer();
1898}
1899
Chris Craik564acf72014-01-02 16:46:18 -08001900void OpenGLRenderer::setupDrawMesh(const GLvoid* vertices,
1901 const GLvoid* texCoords, const GLvoid* colors) {
Romain Guyff316ec2013-02-13 18:39:43 -08001902 bool force = mCaches.unbindMeshBuffer();
1903 GLsizei stride = sizeof(ColorTextureVertex);
1904
1905 mCaches.bindPositionVertexPointer(force, vertices, stride);
1906 if (mCaches.currentProgram->texCoords >= 0) {
1907 mCaches.bindTexCoordsVertexPointer(force, texCoords, stride);
1908 }
1909 int slot = mCaches.currentProgram->getAttrib("colors");
1910 if (slot >= 0) {
1911 glEnableVertexAttribArray(slot);
1912 glVertexAttribPointer(slot, 4, GL_FLOAT, GL_FALSE, stride, colors);
1913 }
1914
1915 mCaches.unbindIndicesBuffer();
1916}
1917
Chris Craik564acf72014-01-02 16:46:18 -08001918void OpenGLRenderer::setupDrawMeshIndices(const GLvoid* vertices,
1919 const GLvoid* texCoords, GLuint vbo) {
Romain Guy3b748a42013-04-17 18:54:38 -07001920 bool force = false;
1921 // If vbo is != 0 we want to treat the vertices parameter as an offset inside
1922 // a VBO. However, if vertices is set to NULL and vbo == 0 then we want to
1923 // use the default VBO found in Caches
1924 if (!vertices || vbo) {
1925 force = mCaches.bindMeshBuffer(vbo == 0 ? mCaches.meshBuffer : vbo);
1926 } else {
1927 force = mCaches.unbindMeshBuffer();
1928 }
ztenghui63d41ab2014-02-14 13:13:41 -08001929 mCaches.bindQuadIndicesBuffer();
Romain Guy3b748a42013-04-17 18:54:38 -07001930
Chris Craikcb4d6002012-09-25 12:00:29 -07001931 mCaches.bindPositionVertexPointer(force, vertices);
Romain Guy15bc6432011-12-13 13:11:32 -08001932 if (mCaches.currentProgram->texCoords >= 0) {
Chris Craikcb4d6002012-09-25 12:00:29 -07001933 mCaches.bindTexCoordsVertexPointer(force, texCoords);
Romain Guy8d0d4782010-12-14 20:13:35 -08001934 }
Romain Guy70ca14e2010-12-13 18:24:33 -08001935}
1936
Romain Guy448455f2013-07-22 13:57:50 -07001937void OpenGLRenderer::setupDrawIndexedVertices(GLvoid* vertices) {
Romain Guyf3a910b42011-12-12 20:35:21 -08001938 bool force = mCaches.unbindMeshBuffer();
ztenghui63d41ab2014-02-14 13:13:41 -08001939 mCaches.bindQuadIndicesBuffer();
Chris Craikcb4d6002012-09-25 12:00:29 -07001940 mCaches.bindPositionVertexPointer(force, vertices, gVertexStride);
Chet Haase5b0200b2011-04-13 17:58:08 -07001941}
1942
Romain Guy70ca14e2010-12-13 18:24:33 -08001943///////////////////////////////////////////////////////////////////////////////
Romain Guyf6a11b82010-06-23 17:47:49 -07001944// Drawing
1945///////////////////////////////////////////////////////////////////////////////
1946
Chris Craika7090e02014-06-20 16:01:00 -07001947status_t OpenGLRenderer::drawRenderNode(RenderNode* renderNode, Rect& dirty, int32_t replayFlags) {
Chet Haase58d110a2013-04-10 07:43:29 -07001948 status_t status;
Romain Guy0fe478e2010-11-08 12:08:41 -08001949 // All the usual checks and setup operations (quickReject, setupDraw, etc.)
1950 // will be performed by the display list itself
Chris Craika7090e02014-06-20 16:01:00 -07001951 if (renderNode && renderNode->isRenderable()) {
Chris Craikf57776b2013-10-25 18:30:17 -07001952 // compute 3d ordering
Chris Craika7090e02014-06-20 16:01:00 -07001953 renderNode->computeOrdering();
Chris Craikd90144d2013-03-19 15:03:48 -07001954 if (CC_UNLIKELY(mCaches.drawDeferDisabled)) {
Chet Haase58d110a2013-04-10 07:43:29 -07001955 status = startFrame();
Chris Craikff785832013-03-08 13:12:16 -08001956 ReplayStateStruct replayStruct(*this, dirty, replayFlags);
Chris Craika7090e02014-06-20 16:01:00 -07001957 renderNode->replay(replayStruct, 0);
Chet Haase58d110a2013-04-10 07:43:29 -07001958 return status | replayStruct.mDrawGlStatus;
Chris Craikc3566d02013-02-04 16:16:33 -08001959 }
1960
John Reck23d307c2014-10-27 12:38:48 -07001961 DeferredDisplayList deferredList(*currentClipRect());
Chris Craikff785832013-03-08 13:12:16 -08001962 DeferStateStruct deferStruct(deferredList, *this, replayFlags);
Chris Craika7090e02014-06-20 16:01:00 -07001963 renderNode->defer(deferStruct, 0);
Romain Guy96885eb2013-03-26 15:05:58 -07001964
1965 flushLayers();
Chet Haase58d110a2013-04-10 07:43:29 -07001966 status = startFrame();
Romain Guy96885eb2013-03-26 15:05:58 -07001967
Chris Craikf57776b2013-10-25 18:30:17 -07001968 return deferredList.flush(*this, dirty) | status;
Romain Guy0fe478e2010-11-08 12:08:41 -08001969 }
Romain Guy7b5b6ab2011-03-14 18:05:08 -07001970
henry.uh_chen3a1bffa2014-07-03 18:01:37 +08001971 // Even if there is no drawing command(Ex: invisible),
1972 // it still needs startFrame to clear buffer and start tiling.
1973 return startFrame();
Romain Guy0fe478e2010-11-08 12:08:41 -08001974}
1975
Chris Craikd218a922014-01-02 17:13:34 -08001976void OpenGLRenderer::drawAlphaBitmap(Texture* texture, float left, float top, const SkPaint* paint) {
Romain Guy886b2752013-01-04 12:26:18 -08001977 int color = paint != NULL ? paint->getColor() : 0;
1978
Romain Guya168d732011-03-18 16:50:13 -07001979 float x = left;
1980 float y = top;
1981
Romain Guy886b2752013-01-04 12:26:18 -08001982 texture->setWrap(GL_CLAMP_TO_EDGE, true);
1983
Romain Guya168d732011-03-18 16:50:13 -07001984 bool ignoreTransform = false;
Chris Craikd6b65f62014-01-01 14:45:21 -08001985 if (currentTransform()->isPureTranslate()) {
1986 x = (int) floorf(left + currentTransform()->getTranslateX() + 0.5f);
1987 y = (int) floorf(top + currentTransform()->getTranslateY() + 0.5f);
Romain Guya168d732011-03-18 16:50:13 -07001988 ignoreTransform = true;
Romain Guy886b2752013-01-04 12:26:18 -08001989
1990 texture->setFilter(GL_NEAREST, true);
Romain Guyd21b6e12011-11-30 20:21:23 -08001991 } else {
Chris Craik678625242014-02-28 12:26:34 -08001992 texture->setFilter(getFilter(paint), true);
Romain Guya168d732011-03-18 16:50:13 -07001993 }
1994
Romain Guy3b748a42013-04-17 18:54:38 -07001995 // No need to check for a UV mapper on the texture object, only ARGB_8888
1996 // bitmaps get packed in the atlas
Romain Guy886b2752013-01-04 12:26:18 -08001997 drawAlpha8TextureMesh(x, y, x + texture->width, y + texture->height, texture->id,
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05001998 paint, (GLvoid*) NULL, (GLvoid*) gMeshTextureOffset,
Romain Guy3b748a42013-04-17 18:54:38 -07001999 GL_TRIANGLE_STRIP, gMeshCount, ignoreTransform);
Romain Guya168d732011-03-18 16:50:13 -07002000}
2001
Romain Guy03c00b52013-06-20 18:30:28 -07002002/**
2003 * Important note: this method is intended to draw batches of bitmaps and
2004 * will not set the scissor enable or dirty the current layer, if any.
2005 * The caller is responsible for properly dirtying the current layer.
2006 */
Chris Craikd218a922014-01-02 17:13:34 -08002007status_t OpenGLRenderer::drawBitmaps(const SkBitmap* bitmap, AssetAtlas::Entry* entry,
2008 int bitmapCount, TextureVertex* vertices, bool pureTranslate,
2009 const Rect& bounds, const SkPaint* paint) {
Chris Craik527a3aa2013-03-04 10:19:31 -08002010 mCaches.activeTexture(0);
Romain Guy55b6f952013-06-27 15:27:09 -07002011 Texture* texture = entry ? entry->texture : mCaches.textureCache.get(bitmap);
Chris Craik527a3aa2013-03-04 10:19:31 -08002012 if (!texture) return DrawGlInfo::kStatusDone;
Romain Guy3b748a42013-04-17 18:54:38 -07002013
Chris Craik527a3aa2013-03-04 10:19:31 -08002014 const AutoTexture autoCleanup(texture);
2015
Chris Craik527a3aa2013-03-04 10:19:31 -08002016 texture->setWrap(GL_CLAMP_TO_EDGE, true);
Chris Craik678625242014-02-28 12:26:34 -08002017 texture->setFilter(pureTranslate ? GL_NEAREST : getFilter(paint), true);
Chris Craik527a3aa2013-03-04 10:19:31 -08002018
2019 const float x = (int) floorf(bounds.left + 0.5f);
2020 const float y = (int) floorf(bounds.top + 0.5f);
Mike Reed1103b322014-07-08 12:36:44 -04002021 if (CC_UNLIKELY(bitmap->colorType() == kAlpha_8_SkColorType)) {
Chris Craik527a3aa2013-03-04 10:19:31 -08002022 drawAlpha8TextureMesh(x, y, x + bounds.getWidth(), y + bounds.getHeight(),
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002023 texture->id, paint, &vertices[0].x, &vertices[0].u,
Chris Craik4063a0e2013-11-15 16:06:56 -08002024 GL_TRIANGLES, bitmapCount * 6, true,
2025 kModelViewMode_Translate, false);
Chris Craik527a3aa2013-03-04 10:19:31 -08002026 } else {
2027 drawTextureMesh(x, y, x + bounds.getWidth(), y + bounds.getHeight(),
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002028 texture->id, paint, texture->blend, &vertices[0].x, &vertices[0].u,
Chris Craik4063a0e2013-11-15 16:06:56 -08002029 GL_TRIANGLES, bitmapCount * 6, false, true, 0,
2030 kModelViewMode_Translate, false);
Chris Craik527a3aa2013-03-04 10:19:31 -08002031 }
2032
2033 return DrawGlInfo::kStatusDrew;
2034}
2035
Chris Craik79647502014-08-06 13:42:24 -07002036status_t OpenGLRenderer::drawBitmap(const SkBitmap* bitmap, const SkPaint* paint) {
2037 if (quickRejectSetupScissor(0, 0, bitmap->width(), bitmap->height())) {
Chet Haase48659092012-05-31 15:21:51 -07002038 return DrawGlInfo::kStatusDone;
Romain Guy6926c722010-07-12 20:20:03 -07002039 }
2040
Romain Guya1d3c912011-12-13 14:55:06 -08002041 mCaches.activeTexture(0);
Romain Guy3b748a42013-04-17 18:54:38 -07002042 Texture* texture = getTexture(bitmap);
Chet Haase48659092012-05-31 15:21:51 -07002043 if (!texture) return DrawGlInfo::kStatusDone;
Romain Guy22158e12010-08-06 11:18:34 -07002044 const AutoTexture autoCleanup(texture);
2045
Mike Reed1103b322014-07-08 12:36:44 -04002046 if (CC_UNLIKELY(bitmap->colorType() == kAlpha_8_SkColorType)) {
Chris Craik79647502014-08-06 13:42:24 -07002047 drawAlphaBitmap(texture, 0, 0, paint);
Romain Guya168d732011-03-18 16:50:13 -07002048 } else {
Chris Craik79647502014-08-06 13:42:24 -07002049 drawTextureRect(0, 0, bitmap->width(), bitmap->height(), texture, paint);
Romain Guya168d732011-03-18 16:50:13 -07002050 }
Chet Haase48659092012-05-31 15:21:51 -07002051
2052 return DrawGlInfo::kStatusDrew;
Romain Guyce0537b2010-06-29 21:05:21 -07002053}
2054
Chris Craik79647502014-08-06 13:42:24 -07002055status_t OpenGLRenderer::drawBitmapData(const SkBitmap* bitmap, const SkPaint* paint) {
2056 if (quickRejectSetupScissor(0, 0, bitmap->width(), bitmap->height())) {
Chet Haase48659092012-05-31 15:21:51 -07002057 return DrawGlInfo::kStatusDone;
Romain Guye651cc62012-05-14 19:44:40 -07002058 }
2059
2060 mCaches.activeTexture(0);
2061 Texture* texture = mCaches.textureCache.getTransient(bitmap);
2062 const AutoTexture autoCleanup(texture);
2063
Mike Reed1103b322014-07-08 12:36:44 -04002064 if (CC_UNLIKELY(bitmap->colorType() == kAlpha_8_SkColorType)) {
Chris Craik79647502014-08-06 13:42:24 -07002065 drawAlphaBitmap(texture, 0, 0, paint);
Romain Guy886b2752013-01-04 12:26:18 -08002066 } else {
Chris Craik79647502014-08-06 13:42:24 -07002067 drawTextureRect(0, 0, bitmap->width(), bitmap->height(), texture, paint);
Romain Guy886b2752013-01-04 12:26:18 -08002068 }
Chet Haase48659092012-05-31 15:21:51 -07002069
2070 return DrawGlInfo::kStatusDrew;
Romain Guye651cc62012-05-14 19:44:40 -07002071}
2072
Chris Craikd218a922014-01-02 17:13:34 -08002073status_t OpenGLRenderer::drawBitmapMesh(const SkBitmap* bitmap, int meshWidth, int meshHeight,
2074 const float* vertices, const int* colors, const SkPaint* paint) {
Chris Craikd6b65f62014-01-01 14:45:21 -08002075 if (!vertices || currentSnapshot()->isIgnored()) {
Chet Haase48659092012-05-31 15:21:51 -07002076 return DrawGlInfo::kStatusDone;
Romain Guy5a7b4662011-01-20 19:09:30 -08002077 }
2078
Chris Craik39a908c2013-06-13 14:39:01 -07002079 // TODO: use quickReject on bounds from vertices
2080 mCaches.enableScissor();
2081
Romain Guyb18d2d02011-02-10 15:52:54 -08002082 float left = FLT_MAX;
2083 float top = FLT_MAX;
2084 float right = FLT_MIN;
2085 float bottom = FLT_MIN;
2086
Romain Guya92bb4d2012-10-16 11:08:44 -07002087 const uint32_t count = meshWidth * meshHeight * 6;
Romain Guyb18d2d02011-02-10 15:52:54 -08002088
Chris Craik564acf72014-01-02 16:46:18 -08002089 Vector<ColorTextureVertex> mesh; // TODO: use C++11 unique_ptr
2090 mesh.setCapacity(count);
2091 ColorTextureVertex* vertex = mesh.editArray();
Romain Guyff316ec2013-02-13 18:39:43 -08002092
2093 bool cleanupColors = false;
2094 if (!colors) {
2095 uint32_t colorsCount = (meshWidth + 1) * (meshHeight + 1);
Chris Craikd218a922014-01-02 17:13:34 -08002096 int* newColors = new int[colorsCount];
2097 memset(newColors, 0xff, colorsCount * sizeof(int));
2098 colors = newColors;
Romain Guyff316ec2013-02-13 18:39:43 -08002099 cleanupColors = true;
2100 }
Romain Guya92bb4d2012-10-16 11:08:44 -07002101
Romain Guy3b748a42013-04-17 18:54:38 -07002102 mCaches.activeTexture(0);
2103 Texture* texture = mCaches.assetAtlas.getEntryTexture(bitmap);
2104 const UvMapper& mapper(getMapper(texture));
2105
Romain Guy5a7b4662011-01-20 19:09:30 -08002106 for (int32_t y = 0; y < meshHeight; y++) {
2107 for (int32_t x = 0; x < meshWidth; x++) {
2108 uint32_t i = (y * (meshWidth + 1) + x) * 2;
2109
2110 float u1 = float(x) / meshWidth;
2111 float u2 = float(x + 1) / meshWidth;
2112 float v1 = float(y) / meshHeight;
2113 float v2 = float(y + 1) / meshHeight;
2114
Romain Guy3b748a42013-04-17 18:54:38 -07002115 mapper.map(u1, v1, u2, v2);
2116
Romain Guy5a7b4662011-01-20 19:09:30 -08002117 int ax = i + (meshWidth + 1) * 2;
2118 int ay = ax + 1;
2119 int bx = i;
2120 int by = bx + 1;
2121 int cx = i + 2;
2122 int cy = cx + 1;
2123 int dx = i + (meshWidth + 1) * 2 + 2;
2124 int dy = dx + 1;
2125
Romain Guyff316ec2013-02-13 18:39:43 -08002126 ColorTextureVertex::set(vertex++, vertices[dx], vertices[dy], u2, v2, colors[dx / 2]);
2127 ColorTextureVertex::set(vertex++, vertices[ax], vertices[ay], u1, v2, colors[ax / 2]);
2128 ColorTextureVertex::set(vertex++, vertices[bx], vertices[by], u1, v1, colors[bx / 2]);
Romain Guy5a7b4662011-01-20 19:09:30 -08002129
Romain Guyff316ec2013-02-13 18:39:43 -08002130 ColorTextureVertex::set(vertex++, vertices[dx], vertices[dy], u2, v2, colors[dx / 2]);
2131 ColorTextureVertex::set(vertex++, vertices[bx], vertices[by], u1, v1, colors[bx / 2]);
2132 ColorTextureVertex::set(vertex++, vertices[cx], vertices[cy], u2, v1, colors[cx / 2]);
Romain Guyb18d2d02011-02-10 15:52:54 -08002133
Romain Guya92bb4d2012-10-16 11:08:44 -07002134 left = fminf(left, fminf(vertices[ax], fminf(vertices[bx], vertices[cx])));
2135 top = fminf(top, fminf(vertices[ay], fminf(vertices[by], vertices[cy])));
2136 right = fmaxf(right, fmaxf(vertices[ax], fmaxf(vertices[bx], vertices[cx])));
2137 bottom = fmaxf(bottom, fmaxf(vertices[ay], fmaxf(vertices[by], vertices[cy])));
Romain Guy5a7b4662011-01-20 19:09:30 -08002138 }
2139 }
2140
Chris Craikf0a59072013-11-19 18:00:46 -08002141 if (quickRejectSetupScissor(left, top, right, bottom)) {
Romain Guyff316ec2013-02-13 18:39:43 -08002142 if (cleanupColors) delete[] colors;
Romain Guya92bb4d2012-10-16 11:08:44 -07002143 return DrawGlInfo::kStatusDone;
2144 }
2145
Romain Guyff316ec2013-02-13 18:39:43 -08002146 if (!texture) {
Romain Guy3b748a42013-04-17 18:54:38 -07002147 texture = mCaches.textureCache.get(bitmap);
2148 if (!texture) {
2149 if (cleanupColors) delete[] colors;
2150 return DrawGlInfo::kStatusDone;
2151 }
Romain Guyff316ec2013-02-13 18:39:43 -08002152 }
Romain Guya92bb4d2012-10-16 11:08:44 -07002153 const AutoTexture autoCleanup(texture);
2154
2155 texture->setWrap(GL_CLAMP_TO_EDGE, true);
Chris Craik678625242014-02-28 12:26:34 -08002156 texture->setFilter(getFilter(paint), true);
Romain Guya92bb4d2012-10-16 11:08:44 -07002157
2158 int alpha;
2159 SkXfermode::Mode mode;
2160 getAlphaAndMode(paint, &alpha, &mode);
2161
Romain Guyff316ec2013-02-13 18:39:43 -08002162 float a = alpha / 255.0f;
2163
Romain Guya92bb4d2012-10-16 11:08:44 -07002164 if (hasLayer()) {
Chris Craikd6b65f62014-01-01 14:45:21 -08002165 dirtyLayer(left, top, right, bottom, *currentTransform());
Romain Guyb18d2d02011-02-10 15:52:54 -08002166 }
Romain Guyb18d2d02011-02-10 15:52:54 -08002167
Romain Guyff316ec2013-02-13 18:39:43 -08002168 setupDraw();
2169 setupDrawWithTextureAndColor();
2170 setupDrawColor(a, a, a, a);
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002171 setupDrawColorFilter(getColorFilter(paint));
2172 setupDrawBlending(paint, true);
Romain Guyff316ec2013-02-13 18:39:43 -08002173 setupDrawProgram();
2174 setupDrawDirtyRegionsDisabled();
Chris Craik4063a0e2013-11-15 16:06:56 -08002175 setupDrawModelView(kModelViewMode_TranslateAndScale, false, 0.0f, 0.0f, 1.0f, 1.0f);
Romain Guyff316ec2013-02-13 18:39:43 -08002176 setupDrawTexture(texture->id);
2177 setupDrawPureColorUniforms();
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002178 setupDrawColorFilterUniforms(getColorFilter(paint));
Romain Guy3380cfd2013-08-15 16:57:57 -07002179 setupDrawMesh(&mesh[0].x, &mesh[0].u, &mesh[0].r);
Romain Guyff316ec2013-02-13 18:39:43 -08002180
2181 glDrawArrays(GL_TRIANGLES, 0, count);
2182
Romain Guyff316ec2013-02-13 18:39:43 -08002183 int slot = mCaches.currentProgram->getAttrib("colors");
2184 if (slot >= 0) {
2185 glDisableVertexAttribArray(slot);
2186 }
2187
2188 if (cleanupColors) delete[] colors;
Chet Haase48659092012-05-31 15:21:51 -07002189
2190 return DrawGlInfo::kStatusDrew;
Romain Guy5a7b4662011-01-20 19:09:30 -08002191}
2192
Chris Craikd218a922014-01-02 17:13:34 -08002193status_t OpenGLRenderer::drawBitmap(const SkBitmap* bitmap,
Romain Guy8ba548f2010-06-30 19:21:21 -07002194 float srcLeft, float srcTop, float srcRight, float srcBottom,
2195 float dstLeft, float dstTop, float dstRight, float dstBottom,
Chris Craikd218a922014-01-02 17:13:34 -08002196 const SkPaint* paint) {
Chris Craikf0a59072013-11-19 18:00:46 -08002197 if (quickRejectSetupScissor(dstLeft, dstTop, dstRight, dstBottom)) {
Chet Haase48659092012-05-31 15:21:51 -07002198 return DrawGlInfo::kStatusDone;
Romain Guy6926c722010-07-12 20:20:03 -07002199 }
2200
Romain Guya1d3c912011-12-13 14:55:06 -08002201 mCaches.activeTexture(0);
Romain Guy3b748a42013-04-17 18:54:38 -07002202 Texture* texture = getTexture(bitmap);
Chet Haase48659092012-05-31 15:21:51 -07002203 if (!texture) return DrawGlInfo::kStatusDone;
Romain Guy22158e12010-08-06 11:18:34 -07002204 const AutoTexture autoCleanup(texture);
Romain Guy8ba548f2010-06-30 19:21:21 -07002205
Romain Guy8ba548f2010-06-30 19:21:21 -07002206 const float width = texture->width;
2207 const float height = texture->height;
2208
Romain Guy3b748a42013-04-17 18:54:38 -07002209 float u1 = fmax(0.0f, srcLeft / width);
2210 float v1 = fmax(0.0f, srcTop / height);
2211 float u2 = fmin(1.0f, srcRight / width);
2212 float v2 = fmin(1.0f, srcBottom / height);
2213
2214 getMapper(texture).map(u1, v1, u2, v2);
Romain Guy8ba548f2010-06-30 19:21:21 -07002215
Romain Guy03750a02010-10-18 14:06:08 -07002216 mCaches.unbindMeshBuffer();
Romain Guy8ba548f2010-06-30 19:21:21 -07002217 resetDrawTextureTexCoords(u1, v1, u2, v2);
2218
Romain Guyd21b6e12011-11-30 20:21:23 -08002219 texture->setWrap(GL_CLAMP_TO_EDGE, true);
2220
Romain Guy886b2752013-01-04 12:26:18 -08002221 float scaleX = (dstRight - dstLeft) / (srcRight - srcLeft);
2222 float scaleY = (dstBottom - dstTop) / (srcBottom - srcTop);
Romain Guy6620c6d2010-12-06 18:07:02 -08002223
Romain Guy886b2752013-01-04 12:26:18 -08002224 bool scaled = scaleX != 1.0f || scaleY != 1.0f;
2225 // Apply a scale transform on the canvas only when a shader is in use
2226 // Skia handles the ratio between the dst and src rects as a scale factor
2227 // when a shader is set
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04002228 bool useScaleTransform = getShader(paint) && scaled;
Romain Guy886b2752013-01-04 12:26:18 -08002229 bool ignoreTransform = false;
Romain Guyb5014982011-07-28 15:39:12 -07002230
Chris Craikd6b65f62014-01-01 14:45:21 -08002231 if (CC_LIKELY(currentTransform()->isPureTranslate() && !useScaleTransform)) {
2232 float x = (int) floorf(dstLeft + currentTransform()->getTranslateX() + 0.5f);
2233 float y = (int) floorf(dstTop + currentTransform()->getTranslateY() + 0.5f);
Romain Guy886b2752013-01-04 12:26:18 -08002234
2235 dstRight = x + (dstRight - dstLeft);
2236 dstBottom = y + (dstBottom - dstTop);
2237
2238 dstLeft = x;
2239 dstTop = y;
2240
Chris Craik678625242014-02-28 12:26:34 -08002241 texture->setFilter(scaled ? getFilter(paint) : GL_NEAREST, true);
Romain Guy886b2752013-01-04 12:26:18 -08002242 ignoreTransform = true;
Romain Guy6620c6d2010-12-06 18:07:02 -08002243 } else {
Chris Craik678625242014-02-28 12:26:34 -08002244 texture->setFilter(getFilter(paint), true);
Romain Guy886b2752013-01-04 12:26:18 -08002245 }
2246
2247 if (CC_UNLIKELY(useScaleTransform)) {
2248 save(SkCanvas::kMatrix_SaveFlag);
2249 translate(dstLeft, dstTop);
2250 scale(scaleX, scaleY);
2251
2252 dstLeft = 0.0f;
2253 dstTop = 0.0f;
2254
2255 dstRight = srcRight - srcLeft;
2256 dstBottom = srcBottom - srcTop;
2257 }
2258
Mike Reed1103b322014-07-08 12:36:44 -04002259 if (CC_UNLIKELY(bitmap->colorType() == kAlpha_8_SkColorType)) {
Romain Guy886b2752013-01-04 12:26:18 -08002260 drawAlpha8TextureMesh(dstLeft, dstTop, dstRight, dstBottom,
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002261 texture->id, paint,
Romain Guy3380cfd2013-08-15 16:57:57 -07002262 &mMeshVertices[0].x, &mMeshVertices[0].u,
Romain Guy886b2752013-01-04 12:26:18 -08002263 GL_TRIANGLE_STRIP, gMeshCount, ignoreTransform);
2264 } else {
2265 drawTextureMesh(dstLeft, dstTop, dstRight, dstBottom,
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002266 texture->id, paint, texture->blend,
Romain Guy3380cfd2013-08-15 16:57:57 -07002267 &mMeshVertices[0].x, &mMeshVertices[0].u,
Romain Guy886b2752013-01-04 12:26:18 -08002268 GL_TRIANGLE_STRIP, gMeshCount, false, ignoreTransform);
2269 }
2270
2271 if (CC_UNLIKELY(useScaleTransform)) {
2272 restore();
Romain Guy6620c6d2010-12-06 18:07:02 -08002273 }
Romain Guy8ba548f2010-06-30 19:21:21 -07002274
2275 resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f);
Chet Haase48659092012-05-31 15:21:51 -07002276
2277 return DrawGlInfo::kStatusDrew;
Romain Guy8ba548f2010-06-30 19:21:21 -07002278}
2279
Chris Craikd218a922014-01-02 17:13:34 -08002280status_t OpenGLRenderer::drawPatch(const SkBitmap* bitmap, const Res_png_9patch* patch,
2281 float left, float top, float right, float bottom, const SkPaint* paint) {
Chris Craikf0a59072013-11-19 18:00:46 -08002282 if (quickRejectSetupScissor(left, top, right, bottom)) {
Chet Haase48659092012-05-31 15:21:51 -07002283 return DrawGlInfo::kStatusDone;
Romain Guy6926c722010-07-12 20:20:03 -07002284 }
2285
Romain Guy4c2547f2013-06-11 16:19:24 -07002286 AssetAtlas::Entry* entry = mCaches.assetAtlas.getEntry(bitmap);
Romain Guy3b748a42013-04-17 18:54:38 -07002287 const Patch* mesh = mCaches.patchCache.get(entry, bitmap->width(), bitmap->height(),
2288 right - left, bottom - top, patch);
Romain Guyf7f93552010-07-08 19:17:03 -07002289
Romain Guy03c00b52013-06-20 18:30:28 -07002290 return drawPatch(bitmap, mesh, entry, left, top, right, bottom, paint);
Romain Guy4c2547f2013-06-11 16:19:24 -07002291}
2292
Chris Craikd218a922014-01-02 17:13:34 -08002293status_t OpenGLRenderer::drawPatch(const SkBitmap* bitmap, const Patch* mesh,
2294 AssetAtlas::Entry* entry, float left, float top, float right, float bottom,
2295 const SkPaint* paint) {
Chris Craikf0a59072013-11-19 18:00:46 -08002296 if (quickRejectSetupScissor(left, top, right, bottom)) {
Romain Guy4c2547f2013-06-11 16:19:24 -07002297 return DrawGlInfo::kStatusDone;
2298 }
2299
Romain Guy211370f2012-02-01 16:10:55 -08002300 if (CC_LIKELY(mesh && mesh->verticesCount > 0)) {
Romain Guya4adcf02013-02-28 12:15:35 -08002301 mCaches.activeTexture(0);
Romain Guya404e162013-05-24 16:19:19 -07002302 Texture* texture = entry ? entry->texture : mCaches.textureCache.get(bitmap);
Romain Guya4adcf02013-02-28 12:15:35 -08002303 if (!texture) return DrawGlInfo::kStatusDone;
2304 const AutoTexture autoCleanup(texture);
Romain Guy3b748a42013-04-17 18:54:38 -07002305
Romain Guya4adcf02013-02-28 12:15:35 -08002306 texture->setWrap(GL_CLAMP_TO_EDGE, true);
2307 texture->setFilter(GL_LINEAR, true);
2308
Chris Craikd6b65f62014-01-01 14:45:21 -08002309 const bool pureTranslate = currentTransform()->isPureTranslate();
Romain Guy5b3b3522010-10-27 18:57:51 -07002310 // Mark the current layer dirty where we are going to draw the patch
Romain Guy81683962011-01-24 20:40:18 -08002311 if (hasLayer() && mesh->hasEmptyQuads) {
Chris Craikd6b65f62014-01-01 14:45:21 -08002312 const float offsetX = left + currentTransform()->getTranslateX();
2313 const float offsetY = top + currentTransform()->getTranslateY();
Romain Guy5b3b3522010-10-27 18:57:51 -07002314 const size_t count = mesh->quads.size();
2315 for (size_t i = 0; i < count; i++) {
Romain Guy8ab40792010-12-07 13:30:10 -08002316 const Rect& bounds = mesh->quads.itemAt(i);
Romain Guy211370f2012-02-01 16:10:55 -08002317 if (CC_LIKELY(pureTranslate)) {
Romain Guyc78b5d52011-02-04 14:00:42 -08002318 const float x = (int) floorf(bounds.left + offsetX + 0.5f);
2319 const float y = (int) floorf(bounds.top + offsetY + 0.5f);
2320 dirtyLayer(x, y, x + bounds.getWidth(), y + bounds.getHeight());
Romain Guy6620c6d2010-12-06 18:07:02 -08002321 } else {
Romain Guyc78b5d52011-02-04 14:00:42 -08002322 dirtyLayer(left + bounds.left, top + bounds.top,
Chris Craikd6b65f62014-01-01 14:45:21 -08002323 left + bounds.right, top + bounds.bottom, *currentTransform());
Romain Guy6620c6d2010-12-06 18:07:02 -08002324 }
Romain Guy5b3b3522010-10-27 18:57:51 -07002325 }
2326 }
2327
Chris Craik4063a0e2013-11-15 16:06:56 -08002328 bool ignoreTransform = false;
Romain Guy211370f2012-02-01 16:10:55 -08002329 if (CC_LIKELY(pureTranslate)) {
Chris Craikd6b65f62014-01-01 14:45:21 -08002330 const float x = (int) floorf(left + currentTransform()->getTranslateX() + 0.5f);
2331 const float y = (int) floorf(top + currentTransform()->getTranslateY() + 0.5f);
Romain Guy6620c6d2010-12-06 18:07:02 -08002332
Romain Guy3b748a42013-04-17 18:54:38 -07002333 right = x + right - left;
2334 bottom = y + bottom - top;
Chris Craik4063a0e2013-11-15 16:06:56 -08002335 left = x;
2336 top = y;
2337 ignoreTransform = true;
Romain Guy6620c6d2010-12-06 18:07:02 -08002338 }
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002339 drawIndexedTextureMesh(left, top, right, bottom, texture->id, paint,
2340 texture->blend, (GLvoid*) mesh->offset, (GLvoid*) mesh->textureOffset,
Chris Craik4063a0e2013-11-15 16:06:56 -08002341 GL_TRIANGLES, mesh->indexCount, false, ignoreTransform,
2342 mCaches.patchCache.getMeshBuffer(), kModelViewMode_Translate, !mesh->hasEmptyQuads);
Romain Guy054dc182010-10-15 17:55:25 -07002343 }
Chet Haase48659092012-05-31 15:21:51 -07002344
2345 return DrawGlInfo::kStatusDrew;
Romain Guyf7f93552010-07-08 19:17:03 -07002346}
2347
Romain Guy03c00b52013-06-20 18:30:28 -07002348/**
2349 * Important note: this method is intended to draw batches of 9-patch objects and
2350 * will not set the scissor enable or dirty the current layer, if any.
2351 * The caller is responsible for properly dirtying the current layer.
2352 */
Chris Craikd218a922014-01-02 17:13:34 -08002353status_t OpenGLRenderer::drawPatches(const SkBitmap* bitmap, AssetAtlas::Entry* entry,
2354 TextureVertex* vertices, uint32_t indexCount, const SkPaint* paint) {
Romain Guy03c00b52013-06-20 18:30:28 -07002355 mCaches.activeTexture(0);
2356 Texture* texture = entry ? entry->texture : mCaches.textureCache.get(bitmap);
2357 if (!texture) return DrawGlInfo::kStatusDone;
2358 const AutoTexture autoCleanup(texture);
2359
2360 texture->setWrap(GL_CLAMP_TO_EDGE, true);
2361 texture->setFilter(GL_LINEAR, true);
2362
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002363 drawIndexedTextureMesh(0.0f, 0.0f, 1.0f, 1.0f, texture->id, paint,
2364 texture->blend, &vertices[0].x, &vertices[0].u,
Chris Craik4063a0e2013-11-15 16:06:56 -08002365 GL_TRIANGLES, indexCount, false, true, 0, kModelViewMode_Translate, false);
Romain Guy03c00b52013-06-20 18:30:28 -07002366
2367 return DrawGlInfo::kStatusDrew;
2368}
2369
Chris Craik05f3d6e2014-06-02 16:27:04 -07002370status_t OpenGLRenderer::drawVertexBuffer(float translateX, float translateY,
Chris Craikbf759452014-08-11 16:00:44 -07002371 const VertexBuffer& vertexBuffer, const SkPaint* paint, int displayFlags) {
Chris Craik4063a0e2013-11-15 16:06:56 -08002372 // not missing call to quickReject/dirtyLayer, always done at a higher level
Chris Craik6d29c8d2013-05-08 18:35:44 -07002373 if (!vertexBuffer.getVertexCount()) {
Chris Craik65cd6122012-12-10 17:56:27 -08002374 // no vertices to draw
2375 return DrawGlInfo::kStatusDone;
2376 }
2377
Chris Craik0d5ac952014-07-15 13:01:02 -07002378 Rect bounds(vertexBuffer.getBounds());
2379 bounds.translate(translateX, translateY);
Chris Craik05f3d6e2014-06-02 16:27:04 -07002380 dirtyLayer(bounds.left, bounds.top, bounds.right, bounds.bottom, *currentTransform());
2381
Chris Craikcb4d6002012-09-25 12:00:29 -07002382 int color = paint->getColor();
Chris Craikcb4d6002012-09-25 12:00:29 -07002383 bool isAA = paint->isAntiAlias();
2384
Chris Craik710f46d2012-09-17 17:25:49 -07002385 setupDraw();
2386 setupDrawNoTexture();
Chris Craik91a8c7c2014-08-12 14:31:35 -07002387 if (isAA) setupDrawVertexAlpha((displayFlags & kVertexBuffer_ShadowInterp));
Chris Craik710f46d2012-09-17 17:25:49 -07002388 setupDrawColor(color, ((color >> 24) & 0xFF) * mSnapshot->alpha);
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002389 setupDrawColorFilter(getColorFilter(paint));
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04002390 setupDrawShader(getShader(paint));
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002391 setupDrawBlending(paint, isAA);
Chris Craik710f46d2012-09-17 17:25:49 -07002392 setupDrawProgram();
Chris Craikbf759452014-08-11 16:00:44 -07002393 setupDrawModelView(kModelViewMode_Translate, (displayFlags & kVertexBuffer_Offset),
2394 translateX, translateY, 0, 0);
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04002395 setupDrawColorUniforms(getShader(paint));
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002396 setupDrawColorFilterUniforms(getColorFilter(paint));
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04002397 setupDrawShaderUniforms(getShader(paint));
Chet Haase858aa932011-05-12 09:06:00 -07002398
ztenghui55bfb4e2013-12-03 10:38:55 -08002399 const void* vertices = vertexBuffer.getBuffer();
Chris Craik710f46d2012-09-17 17:25:49 -07002400 bool force = mCaches.unbindMeshBuffer();
Chris Craikcb4d6002012-09-25 12:00:29 -07002401 mCaches.bindPositionVertexPointer(true, vertices, isAA ? gAlphaVertexStride : gVertexStride);
Chris Craik710f46d2012-09-17 17:25:49 -07002402 mCaches.resetTexCoordsVertexPointer();
ztenghui63d41ab2014-02-14 13:13:41 -08002403
Chris Craik710f46d2012-09-17 17:25:49 -07002404 int alphaSlot = -1;
2405 if (isAA) {
2406 void* alphaCoords = ((GLbyte*) vertices) + gVertexAlphaOffset;
2407 alphaSlot = mCaches.currentProgram->getAttrib("vtxAlpha");
Chris Craik710f46d2012-09-17 17:25:49 -07002408 // TODO: avoid enable/disable in back to back uses of the alpha attribute
Chris Craik6ebdc112012-08-31 18:24:33 -07002409 glEnableVertexAttribArray(alphaSlot);
2410 glVertexAttribPointer(alphaSlot, 1, GL_FLOAT, GL_FALSE, gAlphaVertexStride, alphaCoords);
Chris Craik710f46d2012-09-17 17:25:49 -07002411 }
Romain Guy04299382012-07-18 17:15:41 -07002412
Chris Craik05f3d6e2014-06-02 16:27:04 -07002413 const VertexBuffer::Mode mode = vertexBuffer.getMode();
2414 if (mode == VertexBuffer::kStandard) {
ztenghui63d41ab2014-02-14 13:13:41 -08002415 mCaches.unbindIndicesBuffer();
2416 glDrawArrays(GL_TRIANGLE_STRIP, 0, vertexBuffer.getVertexCount());
Chris Craik05f3d6e2014-06-02 16:27:04 -07002417 } else if (mode == VertexBuffer::kOnePolyRingShadow) {
ztenghui63d41ab2014-02-14 13:13:41 -08002418 mCaches.bindShadowIndicesBuffer();
ztenghui50ecf842014-03-11 16:52:30 -07002419 glDrawElements(GL_TRIANGLE_STRIP, ONE_POLY_RING_SHADOW_INDEX_COUNT, GL_UNSIGNED_SHORT, 0);
Chris Craik05f3d6e2014-06-02 16:27:04 -07002420 } else if (mode == VertexBuffer::kTwoPolyRingShadow) {
ztenghui50ecf842014-03-11 16:52:30 -07002421 mCaches.bindShadowIndicesBuffer();
2422 glDrawElements(GL_TRIANGLE_STRIP, TWO_POLY_RING_SHADOW_INDEX_COUNT, GL_UNSIGNED_SHORT, 0);
ztenghuid5e8ade2014-08-13 15:48:02 -07002423 } else if (mode == VertexBuffer::kIndices) {
2424 mCaches.unbindIndicesBuffer();
2425 glDrawElements(GL_TRIANGLE_STRIP, vertexBuffer.getIndexCount(), GL_UNSIGNED_SHORT,
2426 vertexBuffer.getIndices());
ztenghui63d41ab2014-02-14 13:13:41 -08002427 }
Romain Guy04299382012-07-18 17:15:41 -07002428
Chris Craik710f46d2012-09-17 17:25:49 -07002429 if (isAA) {
Chris Craik6ebdc112012-08-31 18:24:33 -07002430 glDisableVertexAttribArray(alphaSlot);
Romain Guy04299382012-07-18 17:15:41 -07002431 }
Chris Craik65cd6122012-12-10 17:56:27 -08002432
2433 return DrawGlInfo::kStatusDrew;
Chet Haase858aa932011-05-12 09:06:00 -07002434}
2435
2436/**
Chris Craik65cd6122012-12-10 17:56:27 -08002437 * Renders a convex path via tessellation. For AA paths, this function uses a similar approach to
2438 * that of AA lines in the drawLines() function. We expand the convex path by a half pixel in
2439 * screen space in all directions. However, instead of using a fragment shader to compute the
2440 * translucency of the color from its position, we simply use a varying parameter to define how far
2441 * a given pixel is from the edge. For non-AA paths, the expansion and alpha varying are not used.
2442 *
2443 * Doesn't yet support joins, caps, or path effects.
2444 */
Chris Craikd218a922014-01-02 17:13:34 -08002445status_t OpenGLRenderer::drawConvexPath(const SkPath& path, const SkPaint* paint) {
Chris Craik65cd6122012-12-10 17:56:27 -08002446 VertexBuffer vertexBuffer;
2447 // TODO: try clipping large paths to viewport
Chris Craikd6b65f62014-01-01 14:45:21 -08002448 PathTessellator::tessellatePath(path, paint, *currentTransform(), vertexBuffer);
Chris Craik05f3d6e2014-06-02 16:27:04 -07002449 return drawVertexBuffer(vertexBuffer, paint);
Chris Craik65cd6122012-12-10 17:56:27 -08002450}
2451
2452/**
2453 * We create tristrips for the lines much like shape stroke tessellation, using a per-vertex alpha
2454 * and additional geometry for defining an alpha slope perimeter.
2455 *
2456 * Using GL_LINES can be difficult because the rasterization rules for those lines produces some
2457 * unexpected results, and may vary between hardware devices. Previously we used a varying-base
2458 * in-shader alpha region, but found it to be taxing on some GPUs.
2459 *
2460 * TODO: try using a fixed input buffer for non-capped lines as in text rendering. this may reduce
2461 * memory transfer by removing need for degenerate vertices.
Chet Haase99ecdc42011-05-06 12:06:34 -07002462 */
Chris Craikd218a922014-01-02 17:13:34 -08002463status_t OpenGLRenderer::drawLines(const float* points, int count, const SkPaint* paint) {
Chris Craikd6b65f62014-01-01 14:45:21 -08002464 if (currentSnapshot()->isIgnored() || count < 4) return DrawGlInfo::kStatusDone;
Chet Haase8a5cc922011-04-26 07:28:09 -07002465
Chris Craik65cd6122012-12-10 17:56:27 -08002466 count &= ~0x3; // round down to nearest four
Romain Guy7b631422012-04-04 11:38:54 -07002467
Chris Craik65cd6122012-12-10 17:56:27 -08002468 VertexBuffer buffer;
Chris Craik05f3d6e2014-06-02 16:27:04 -07002469 PathTessellator::tessellateLines(points, count, paint, *currentTransform(), buffer);
2470 const Rect& bounds = buffer.getBounds();
Romain Guyd71ff91d2013-02-08 13:46:40 -08002471
Chris Craik05f3d6e2014-06-02 16:27:04 -07002472 if (quickRejectSetupScissor(bounds.left, bounds.top, bounds.right, bounds.bottom)) {
Romain Guyd71ff91d2013-02-08 13:46:40 -08002473 return DrawGlInfo::kStatusDone;
2474 }
2475
Chris Craikbf759452014-08-11 16:00:44 -07002476 int displayFlags = paint->isAntiAlias() ? 0 : kVertexBuffer_Offset;
2477 return drawVertexBuffer(buffer, paint, displayFlags);
Chet Haase5b0200b2011-04-13 17:58:08 -07002478}
2479
Chris Craikd218a922014-01-02 17:13:34 -08002480status_t OpenGLRenderer::drawPoints(const float* points, int count, const SkPaint* paint) {
Chris Craikd6b65f62014-01-01 14:45:21 -08002481 if (currentSnapshot()->isIgnored() || count < 2) return DrawGlInfo::kStatusDone;
Romain Guyed6fcb02011-03-21 13:11:28 -07002482
Chris Craik6d29c8d2013-05-08 18:35:44 -07002483 count &= ~0x1; // round down to nearest two
Romain Guyed6fcb02011-03-21 13:11:28 -07002484
Chris Craik6d29c8d2013-05-08 18:35:44 -07002485 VertexBuffer buffer;
Chris Craik05f3d6e2014-06-02 16:27:04 -07002486 PathTessellator::tessellatePoints(points, count, paint, *currentTransform(), buffer);
Romain Guyd71ff91d2013-02-08 13:46:40 -08002487
Chris Craik05f3d6e2014-06-02 16:27:04 -07002488 const Rect& bounds = buffer.getBounds();
2489 if (quickRejectSetupScissor(bounds.left, bounds.top, bounds.right, bounds.bottom)) {
Chris Craik6d29c8d2013-05-08 18:35:44 -07002490 return DrawGlInfo::kStatusDone;
Romain Guyed6fcb02011-03-21 13:11:28 -07002491 }
2492
Chris Craikbf759452014-08-11 16:00:44 -07002493 int displayFlags = paint->isAntiAlias() ? 0 : kVertexBuffer_Offset;
2494 return drawVertexBuffer(buffer, paint, displayFlags);
Romain Guyed6fcb02011-03-21 13:11:28 -07002495}
2496
Chet Haase48659092012-05-31 15:21:51 -07002497status_t OpenGLRenderer::drawColor(int color, SkXfermode::Mode mode) {
Romain Guye45362c2010-11-03 19:58:32 -07002498 // No need to check against the clip, we fill the clip region
Chris Craikd6b65f62014-01-01 14:45:21 -08002499 if (currentSnapshot()->isIgnored()) return DrawGlInfo::kStatusDone;
Romain Guye45362c2010-11-03 19:58:32 -07002500
Chris Craikd6b65f62014-01-01 14:45:21 -08002501 Rect clip(*currentClipRect());
Romain Guyae88e5e2010-10-22 17:49:18 -07002502 clip.snapToPixelBoundaries();
Romain Guy70ca14e2010-12-13 18:24:33 -08002503
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002504 SkPaint paint;
2505 paint.setColor(color);
2506 paint.setXfermodeMode(mode);
2507
2508 drawColorRect(clip.left, clip.top, clip.right, clip.bottom, &paint, true);
Chet Haase48659092012-05-31 15:21:51 -07002509
2510 return DrawGlInfo::kStatusDrew;
Romain Guyc7d53492010-06-25 13:41:57 -07002511}
Romain Guy9d5316e2010-06-24 19:30:36 -07002512
Chet Haase48659092012-05-31 15:21:51 -07002513status_t OpenGLRenderer::drawShape(float left, float top, const PathTexture* texture,
Chris Craikd218a922014-01-02 17:13:34 -08002514 const SkPaint* paint) {
Chet Haase48659092012-05-31 15:21:51 -07002515 if (!texture) return DrawGlInfo::kStatusDone;
Romain Guy01d58e42011-01-19 21:54:02 -08002516 const AutoTexture autoCleanup(texture);
2517
2518 const float x = left + texture->left - texture->offset;
2519 const float y = top + texture->top - texture->offset;
2520
2521 drawPathTexture(texture, x, y, paint);
Chet Haase48659092012-05-31 15:21:51 -07002522
2523 return DrawGlInfo::kStatusDrew;
Romain Guy01d58e42011-01-19 21:54:02 -08002524}
2525
Chet Haase48659092012-05-31 15:21:51 -07002526status_t OpenGLRenderer::drawRoundRect(float left, float top, float right, float bottom,
Chris Craikd218a922014-01-02 17:13:34 -08002527 float rx, float ry, const SkPaint* p) {
Chris Craik947eabf2014-08-19 10:21:12 -07002528 if (currentSnapshot()->isIgnored()
2529 || quickRejectSetupScissor(left, top, right, bottom, p)
2530 || paintWillNotDraw(*p)) {
Chris Craik710f46d2012-09-17 17:25:49 -07002531 return DrawGlInfo::kStatusDone;
2532 }
Romain Guyc1cd9ba32011-01-23 14:18:41 -08002533
Chris Craikcb4d6002012-09-25 12:00:29 -07002534 if (p->getPathEffect() != 0) {
Chris Craik710f46d2012-09-17 17:25:49 -07002535 mCaches.activeTexture(0);
Romain Guyc46d07a2013-03-15 19:06:39 -07002536 const PathTexture* texture = mCaches.pathCache.getRoundRect(
Chris Craik710f46d2012-09-17 17:25:49 -07002537 right - left, bottom - top, rx, ry, p);
2538 return drawShape(left, top, texture, p);
2539 }
2540
Chris Craik6ac174b2014-06-17 13:47:05 -07002541 const VertexBuffer* vertexBuffer = mCaches.tessellationCache.getRoundRect(
2542 *currentTransform(), *p, right - left, bottom - top, rx, ry);
Chris Craik05f3d6e2014-06-02 16:27:04 -07002543 return drawVertexBuffer(left, top, *vertexBuffer, p);
Romain Guyc1cd9ba32011-01-23 14:18:41 -08002544}
2545
Chris Craikd218a922014-01-02 17:13:34 -08002546status_t OpenGLRenderer::drawCircle(float x, float y, float radius, const SkPaint* p) {
Chris Craik947eabf2014-08-19 10:21:12 -07002547 if (currentSnapshot()->isIgnored()
2548 || quickRejectSetupScissor(x - radius, y - radius, x + radius, y + radius, p)
2549 || paintWillNotDraw(*p)) {
Chris Craik710f46d2012-09-17 17:25:49 -07002550 return DrawGlInfo::kStatusDone;
2551 }
Chris Craikcb4d6002012-09-25 12:00:29 -07002552 if (p->getPathEffect() != 0) {
Chris Craik710f46d2012-09-17 17:25:49 -07002553 mCaches.activeTexture(0);
Romain Guyc46d07a2013-03-15 19:06:39 -07002554 const PathTexture* texture = mCaches.pathCache.getCircle(radius, p);
Chris Craik710f46d2012-09-17 17:25:49 -07002555 return drawShape(x - radius, y - radius, texture, p);
2556 }
2557
2558 SkPath path;
Chris Craikcb4d6002012-09-25 12:00:29 -07002559 if (p->getStyle() == SkPaint::kStrokeAndFill_Style) {
2560 path.addCircle(x, y, radius + p->getStrokeWidth() / 2);
2561 } else {
2562 path.addCircle(x, y, radius);
2563 }
Chris Craik65cd6122012-12-10 17:56:27 -08002564 return drawConvexPath(path, p);
Romain Guyc1cd9ba32011-01-23 14:18:41 -08002565}
Romain Guy01d58e42011-01-19 21:54:02 -08002566
Chet Haase48659092012-05-31 15:21:51 -07002567status_t OpenGLRenderer::drawOval(float left, float top, float right, float bottom,
Chris Craikd218a922014-01-02 17:13:34 -08002568 const SkPaint* p) {
Chris Craik947eabf2014-08-19 10:21:12 -07002569 if (currentSnapshot()->isIgnored()
2570 || quickRejectSetupScissor(left, top, right, bottom, p)
2571 || paintWillNotDraw(*p)) {
Chris Craik710f46d2012-09-17 17:25:49 -07002572 return DrawGlInfo::kStatusDone;
2573 }
Romain Guy01d58e42011-01-19 21:54:02 -08002574
Chris Craikcb4d6002012-09-25 12:00:29 -07002575 if (p->getPathEffect() != 0) {
Chris Craik710f46d2012-09-17 17:25:49 -07002576 mCaches.activeTexture(0);
Romain Guyc46d07a2013-03-15 19:06:39 -07002577 const PathTexture* texture = mCaches.pathCache.getOval(right - left, bottom - top, p);
Chris Craik710f46d2012-09-17 17:25:49 -07002578 return drawShape(left, top, texture, p);
2579 }
2580
2581 SkPath path;
2582 SkRect rect = SkRect::MakeLTRB(left, top, right, bottom);
Chris Craikcb4d6002012-09-25 12:00:29 -07002583 if (p->getStyle() == SkPaint::kStrokeAndFill_Style) {
2584 rect.outset(p->getStrokeWidth() / 2, p->getStrokeWidth() / 2);
2585 }
Chris Craik710f46d2012-09-17 17:25:49 -07002586 path.addOval(rect);
Chris Craik65cd6122012-12-10 17:56:27 -08002587 return drawConvexPath(path, p);
Romain Guyc1cd9ba32011-01-23 14:18:41 -08002588}
2589
Chet Haase48659092012-05-31 15:21:51 -07002590status_t OpenGLRenderer::drawArc(float left, float top, float right, float bottom,
Chris Craikd218a922014-01-02 17:13:34 -08002591 float startAngle, float sweepAngle, bool useCenter, const SkPaint* p) {
Chris Craik947eabf2014-08-19 10:21:12 -07002592 if (currentSnapshot()->isIgnored()
2593 || quickRejectSetupScissor(left, top, right, bottom, p)
2594 || paintWillNotDraw(*p)) {
Chris Craik780c1282012-10-04 14:10:49 -07002595 return DrawGlInfo::kStatusDone;
Romain Guy8b2f5262011-01-23 16:15:02 -08002596 }
2597
Chris Craik780c1282012-10-04 14:10:49 -07002598 // TODO: support fills (accounting for concavity if useCenter && sweepAngle > 180)
Chris Craik65cd6122012-12-10 17:56:27 -08002599 if (p->getStyle() != SkPaint::kStroke_Style || p->getPathEffect() != 0 || useCenter) {
Chris Craik780c1282012-10-04 14:10:49 -07002600 mCaches.activeTexture(0);
Romain Guyc46d07a2013-03-15 19:06:39 -07002601 const PathTexture* texture = mCaches.pathCache.getArc(right - left, bottom - top,
Chris Craik780c1282012-10-04 14:10:49 -07002602 startAngle, sweepAngle, useCenter, p);
2603 return drawShape(left, top, texture, p);
2604 }
2605
2606 SkRect rect = SkRect::MakeLTRB(left, top, right, bottom);
2607 if (p->getStyle() == SkPaint::kStrokeAndFill_Style) {
2608 rect.outset(p->getStrokeWidth() / 2, p->getStrokeWidth() / 2);
2609 }
2610
2611 SkPath path;
2612 if (useCenter) {
2613 path.moveTo(rect.centerX(), rect.centerY());
2614 }
2615 path.arcTo(rect, startAngle, sweepAngle, !useCenter);
2616 if (useCenter) {
2617 path.close();
2618 }
Chris Craik65cd6122012-12-10 17:56:27 -08002619 return drawConvexPath(path, p);
Romain Guy8b2f5262011-01-23 16:15:02 -08002620}
2621
Romain Guycf8675e2012-10-02 12:32:25 -07002622// See SkPaintDefaults.h
2623#define SkPaintDefaults_MiterLimit SkIntToScalar(4)
2624
Chris Craikd218a922014-01-02 17:13:34 -08002625status_t OpenGLRenderer::drawRect(float left, float top, float right, float bottom,
2626 const SkPaint* p) {
Chris Craik947eabf2014-08-19 10:21:12 -07002627 if (currentSnapshot()->isIgnored()
2628 || quickRejectSetupScissor(left, top, right, bottom, p)
2629 || paintWillNotDraw(*p)) {
Chet Haase48659092012-05-31 15:21:51 -07002630 return DrawGlInfo::kStatusDone;
Romain Guy6926c722010-07-12 20:20:03 -07002631 }
2632
Chris Craik710f46d2012-09-17 17:25:49 -07002633 if (p->getStyle() != SkPaint::kFill_Style) {
Romain Guycf8675e2012-10-02 12:32:25 -07002634 // only fill style is supported by drawConvexPath, since others have to handle joins
2635 if (p->getPathEffect() != 0 || p->getStrokeJoin() != SkPaint::kMiter_Join ||
2636 p->getStrokeMiter() != SkPaintDefaults_MiterLimit) {
2637 mCaches.activeTexture(0);
2638 const PathTexture* texture =
Romain Guyc46d07a2013-03-15 19:06:39 -07002639 mCaches.pathCache.getRect(right - left, bottom - top, p);
Romain Guycf8675e2012-10-02 12:32:25 -07002640 return drawShape(left, top, texture, p);
2641 }
2642
2643 SkPath path;
2644 SkRect rect = SkRect::MakeLTRB(left, top, right, bottom);
2645 if (p->getStyle() == SkPaint::kStrokeAndFill_Style) {
2646 rect.outset(p->getStrokeWidth() / 2, p->getStrokeWidth() / 2);
2647 }
2648 path.addRect(rect);
Chris Craik65cd6122012-12-10 17:56:27 -08002649 return drawConvexPath(path, p);
Romain Guy026c5e162010-06-28 17:12:22 -07002650 }
2651
Chris Craikd6b65f62014-01-01 14:45:21 -08002652 if (p->isAntiAlias() && !currentTransform()->isSimple()) {
Chris Craik710f46d2012-09-17 17:25:49 -07002653 SkPath path;
2654 path.addRect(left, top, right, bottom);
Chris Craik65cd6122012-12-10 17:56:27 -08002655 return drawConvexPath(path, p);
Chet Haase858aa932011-05-12 09:06:00 -07002656 } else {
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002657 drawColorRect(left, top, right, bottom, p);
Chris Craik65cd6122012-12-10 17:56:27 -08002658 return DrawGlInfo::kStatusDrew;
Chet Haase858aa932011-05-12 09:06:00 -07002659 }
Romain Guyc7d53492010-06-25 13:41:57 -07002660}
Romain Guy9d5316e2010-06-24 19:30:36 -07002661
Chris Craikd218a922014-01-02 17:13:34 -08002662void OpenGLRenderer::drawTextShadow(const SkPaint* paint, const char* text,
2663 int bytesCount, int count, const float* positions,
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002664 FontRenderer& fontRenderer, int alpha, float x, float y) {
Raph Levien416a8472012-07-19 22:48:17 -07002665 mCaches.activeTexture(0);
2666
Derek Sollenbergerc29a0a42014-03-31 13:52:39 -04002667 TextShadow textShadow;
2668 if (!getTextShadow(paint, &textShadow)) {
2669 LOG_ALWAYS_FATAL("failed to query shadow attributes");
2670 }
2671
Raph Levien416a8472012-07-19 22:48:17 -07002672 // NOTE: The drop shadow will not perform gamma correction
2673 // if shader-based correction is enabled
2674 mCaches.dropShadowCache.setFontRenderer(fontRenderer);
2675 const ShadowTexture* shadow = mCaches.dropShadowCache.get(
Derek Sollenbergerc29a0a42014-03-31 13:52:39 -04002676 paint, text, bytesCount, count, textShadow.radius, positions);
Romain Guycf51a412013-04-08 19:40:31 -07002677 // If the drop shadow exceeds the max texture size or couldn't be
2678 // allocated, skip drawing
2679 if (!shadow) return;
Raph Levien416a8472012-07-19 22:48:17 -07002680 const AutoTexture autoCleanup(shadow);
2681
Derek Sollenbergerc29a0a42014-03-31 13:52:39 -04002682 const float sx = x - shadow->left + textShadow.dx;
2683 const float sy = y - shadow->top + textShadow.dy;
Raph Levien416a8472012-07-19 22:48:17 -07002684
Derek Sollenbergerc29a0a42014-03-31 13:52:39 -04002685 const int shadowAlpha = ((textShadow.color >> 24) & 0xFF) * mSnapshot->alpha;
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04002686 if (getShader(paint)) {
Derek Sollenbergerc29a0a42014-03-31 13:52:39 -04002687 textShadow.color = SK_ColorWHITE;
Raph Levien416a8472012-07-19 22:48:17 -07002688 }
2689
2690 setupDraw();
2691 setupDrawWithTexture(true);
Derek Sollenbergerc29a0a42014-03-31 13:52:39 -04002692 setupDrawAlpha8Color(textShadow.color, shadowAlpha < 255 ? shadowAlpha : alpha);
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002693 setupDrawColorFilter(getColorFilter(paint));
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04002694 setupDrawShader(getShader(paint));
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002695 setupDrawBlending(paint, true);
Raph Levien416a8472012-07-19 22:48:17 -07002696 setupDrawProgram();
Chris Craik4063a0e2013-11-15 16:06:56 -08002697 setupDrawModelView(kModelViewMode_TranslateAndScale, false,
2698 sx, sy, sx + shadow->width, sy + shadow->height);
Raph Levien416a8472012-07-19 22:48:17 -07002699 setupDrawTexture(shadow->id);
2700 setupDrawPureColorUniforms();
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002701 setupDrawColorFilterUniforms(getColorFilter(paint));
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04002702 setupDrawShaderUniforms(getShader(paint));
Raph Levien416a8472012-07-19 22:48:17 -07002703 setupDrawMesh(NULL, (GLvoid*) gMeshTextureOffset);
2704
2705 glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount);
2706}
2707
Romain Guy768bffc2013-02-27 13:50:45 -08002708bool OpenGLRenderer::canSkipText(const SkPaint* paint) const {
Derek Sollenbergerc29a0a42014-03-31 13:52:39 -04002709 float alpha = (hasTextShadow(paint) ? 1.0f : paint->getAlpha()) * mSnapshot->alpha;
Romain Guy768bffc2013-02-27 13:50:45 -08002710 return alpha == 0.0f && getXfermode(paint->getXfermode()) == SkXfermode::kSrcOver_Mode;
2711}
2712
Chet Haase48659092012-05-31 15:21:51 -07002713status_t OpenGLRenderer::drawPosText(const char* text, int bytesCount, int count,
Chris Craikd218a922014-01-02 17:13:34 -08002714 const float* positions, const SkPaint* paint) {
Chris Craikd6b65f62014-01-01 14:45:21 -08002715 if (text == NULL || count == 0 || currentSnapshot()->isIgnored() || canSkipText(paint)) {
Chet Haase48659092012-05-31 15:21:51 -07002716 return DrawGlInfo::kStatusDone;
Romain Guyeb9a5362012-01-17 17:39:26 -08002717 }
Romain Guyeb9a5362012-01-17 17:39:26 -08002718
Romain Guy671d6cf2012-01-18 12:39:17 -08002719 // NOTE: Skia does not support perspective transform on drawPosText yet
Chris Craikd6b65f62014-01-01 14:45:21 -08002720 if (!currentTransform()->isSimple()) {
Chet Haase48659092012-05-31 15:21:51 -07002721 return DrawGlInfo::kStatusDone;
Romain Guy671d6cf2012-01-18 12:39:17 -08002722 }
2723
Chris Craik39a908c2013-06-13 14:39:01 -07002724 mCaches.enableScissor();
2725
Romain Guy671d6cf2012-01-18 12:39:17 -08002726 float x = 0.0f;
2727 float y = 0.0f;
Chris Craikd6b65f62014-01-01 14:45:21 -08002728 const bool pureTranslate = currentTransform()->isPureTranslate();
Romain Guy671d6cf2012-01-18 12:39:17 -08002729 if (pureTranslate) {
Chris Craikd6b65f62014-01-01 14:45:21 -08002730 x = (int) floorf(x + currentTransform()->getTranslateX() + 0.5f);
2731 y = (int) floorf(y + currentTransform()->getTranslateY() + 0.5f);
Romain Guy671d6cf2012-01-18 12:39:17 -08002732 }
2733
Romain Guyb1d0a4e2012-07-13 18:25:35 -07002734 FontRenderer& fontRenderer = mCaches.fontRenderer->getFontRenderer(paint);
Chris Craik59744b72014-07-01 17:56:52 -07002735 fontRenderer.setFont(paint, SkMatrix::I());
Romain Guy671d6cf2012-01-18 12:39:17 -08002736
2737 int alpha;
2738 SkXfermode::Mode mode;
2739 getAlphaAndMode(paint, &alpha, &mode);
2740
Derek Sollenbergerc29a0a42014-03-31 13:52:39 -04002741 if (CC_UNLIKELY(hasTextShadow(paint))) {
Romain Guye3a9b242013-01-08 11:15:30 -08002742 drawTextShadow(paint, text, bytesCount, count, positions, fontRenderer,
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002743 alpha, 0.0f, 0.0f);
Raph Levien416a8472012-07-19 22:48:17 -07002744 }
2745
Romain Guy671d6cf2012-01-18 12:39:17 -08002746 // Pick the appropriate texture filtering
Chris Craikd6b65f62014-01-01 14:45:21 -08002747 bool linearFilter = currentTransform()->changesBounds();
Romain Guy671d6cf2012-01-18 12:39:17 -08002748 if (pureTranslate && !linearFilter) {
2749 linearFilter = fabs(y - (int) y) > 0.0f || fabs(x - (int) x) > 0.0f;
2750 }
Romain Guy257ae352013-03-20 16:31:12 -07002751 fontRenderer.setTextureFiltering(linearFilter);
Romain Guy671d6cf2012-01-18 12:39:17 -08002752
2753 const Rect* clip = pureTranslate ? mSnapshot->clipRect : &mSnapshot->getLocalClip();
2754 Rect bounds(FLT_MAX / 2.0f, FLT_MAX / 2.0f, FLT_MIN / 2.0f, FLT_MIN / 2.0f);
2755
Romain Guy211370f2012-02-01 16:10:55 -08002756 const bool hasActiveLayer = hasLayer();
Romain Guy671d6cf2012-01-18 12:39:17 -08002757
Victoria Lease1e546812013-06-25 14:25:17 -07002758 TextSetupFunctor functor(this, x, y, pureTranslate, alpha, mode, paint);
Romain Guy671d6cf2012-01-18 12:39:17 -08002759 if (fontRenderer.renderPosText(paint, clip, text, 0, bytesCount, count, x, y,
Romain Guy257ae352013-03-20 16:31:12 -07002760 positions, hasActiveLayer ? &bounds : NULL, &functor)) {
Romain Guy671d6cf2012-01-18 12:39:17 -08002761 if (hasActiveLayer) {
2762 if (!pureTranslate) {
Chris Craikd6b65f62014-01-01 14:45:21 -08002763 currentTransform()->mapRect(bounds);
Romain Guy671d6cf2012-01-18 12:39:17 -08002764 }
2765 dirtyLayerUnchecked(bounds, getRegion());
2766 }
Romain Guy671d6cf2012-01-18 12:39:17 -08002767 }
Chet Haase48659092012-05-31 15:21:51 -07002768
2769 return DrawGlInfo::kStatusDrew;
Romain Guyeb9a5362012-01-17 17:39:26 -08002770}
2771
Chris Craik59744b72014-07-01 17:56:52 -07002772bool OpenGLRenderer::findBestFontTransform(const mat4& transform, SkMatrix* outMatrix) const {
Romain Guy624234f2013-03-05 16:43:31 -08002773 if (CC_LIKELY(transform.isPureTranslate())) {
Chris Craik59744b72014-07-01 17:56:52 -07002774 outMatrix->setIdentity();
2775 return false;
2776 } else if (CC_UNLIKELY(transform.isPerspective())) {
2777 outMatrix->setIdentity();
2778 return true;
Romain Guy624234f2013-03-05 16:43:31 -08002779 }
Chris Craik59744b72014-07-01 17:56:52 -07002780
2781 /**
Chris Craika736cd92014-08-04 13:18:38 -07002782 * Input is a non-perspective, scaling transform. Generate a scale-only transform,
2783 * with values rounded to the nearest int.
Chris Craik59744b72014-07-01 17:56:52 -07002784 */
2785 float sx, sy;
2786 transform.decomposeScale(sx, sy);
Chris Craika736cd92014-08-04 13:18:38 -07002787 outMatrix->setScale(
2788 roundf(fmaxf(1.0f, sx)),
2789 roundf(fmaxf(1.0f, sy)));
2790 return true;
Romain Guy624234f2013-03-05 16:43:31 -08002791}
2792
Chris Craik41541822013-05-03 16:35:54 -07002793status_t OpenGLRenderer::drawText(const char* text, int bytesCount, int count, float x, float y,
Chris Craikd218a922014-01-02 17:13:34 -08002794 const float* positions, const SkPaint* paint, float totalAdvance, const Rect& bounds,
Chris Craik527a3aa2013-03-04 10:19:31 -08002795 DrawOpMode drawOpMode) {
2796
Chris Craik527a3aa2013-03-04 10:19:31 -08002797 if (drawOpMode == kDrawOpMode_Immediate) {
Chris Craik28ce94a2013-05-31 11:38:03 -07002798 // The checks for corner-case ignorable text and quick rejection is only done for immediate
2799 // drawing as ops from DeferredDisplayList are already filtered for these
Chris Craikd6b65f62014-01-01 14:45:21 -08002800 if (text == NULL || count == 0 || currentSnapshot()->isIgnored() || canSkipText(paint) ||
Chris Craikf0a59072013-11-19 18:00:46 -08002801 quickRejectSetupScissor(bounds)) {
Chris Craik28ce94a2013-05-31 11:38:03 -07002802 return DrawGlInfo::kStatusDone;
2803 }
Romain Guycac5fd32011-12-01 20:08:50 -08002804 }
2805
Romain Guy3a3fa1b2010-12-06 18:47:50 -08002806 const float oldX = x;
2807 const float oldY = y;
Romain Guy624234f2013-03-05 16:43:31 -08002808
Chris Craikd6b65f62014-01-01 14:45:21 -08002809 const mat4& transform = *currentTransform();
Romain Guy624234f2013-03-05 16:43:31 -08002810 const bool pureTranslate = transform.isPureTranslate();
Romain Guyc74f45a2013-02-26 19:10:14 -08002811
Romain Guy211370f2012-02-01 16:10:55 -08002812 if (CC_LIKELY(pureTranslate)) {
Romain Guy624234f2013-03-05 16:43:31 -08002813 x = (int) floorf(x + transform.getTranslateX() + 0.5f);
2814 y = (int) floorf(y + transform.getTranslateY() + 0.5f);
Romain Guy6620c6d2010-12-06 18:07:02 -08002815 }
2816
Romain Guy86568192010-12-14 15:55:39 -08002817 int alpha;
2818 SkXfermode::Mode mode;
2819 getAlphaAndMode(paint, &alpha, &mode);
Romain Guy9d13fe252010-10-15 16:06:03 -07002820
Romain Guyc74f45a2013-02-26 19:10:14 -08002821 FontRenderer& fontRenderer = mCaches.fontRenderer->getFontRenderer(paint);
2822
Derek Sollenbergerc29a0a42014-03-31 13:52:39 -04002823 if (CC_UNLIKELY(hasTextShadow(paint))) {
Chris Craik59744b72014-07-01 17:56:52 -07002824 fontRenderer.setFont(paint, SkMatrix::I());
Romain Guyc74f45a2013-02-26 19:10:14 -08002825 drawTextShadow(paint, text, bytesCount, count, positions, fontRenderer,
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002826 alpha, oldX, oldY);
Romain Guy1e45aae2010-08-13 19:39:53 -07002827 }
2828
Romain Guy19d4dd82013-03-04 11:14:26 -08002829 const bool hasActiveLayer = hasLayer();
2830
Romain Guy624234f2013-03-05 16:43:31 -08002831 // We only pass a partial transform to the font renderer. That partial
2832 // matrix defines how glyphs are rasterized. Typically we want glyphs
2833 // to be rasterized at their final size on screen, which means the partial
2834 // matrix needs to take the scale factor into account.
2835 // When a partial matrix is used to transform glyphs during rasterization,
2836 // the mesh is generated with the inverse transform (in the case of scale,
2837 // the mesh is generated at 1.0 / scale for instance.) This allows us to
2838 // apply the full transform matrix at draw time in the vertex shader.
2839 // Applying the full matrix in the shader is the easiest way to handle
2840 // rotation and perspective and allows us to always generated quads in the
2841 // font renderer which greatly simplifies the code, clipping in particular.
Chris Craik59744b72014-07-01 17:56:52 -07002842 SkMatrix fontTransform;
2843 bool linearFilter = findBestFontTransform(transform, &fontTransform)
2844 || fabs(y - (int) y) > 0.0f
2845 || fabs(x - (int) x) > 0.0f;
Romain Guy3b753822013-03-05 10:27:35 -08002846 fontRenderer.setFont(paint, fontTransform);
Romain Guy257ae352013-03-20 16:31:12 -07002847 fontRenderer.setTextureFiltering(linearFilter);
Romain Guy06f96e22010-07-30 19:18:16 -07002848
Romain Guy624234f2013-03-05 16:43:31 -08002849 // TODO: Implement better clipping for scaled/rotated text
Chris Craikd6b65f62014-01-01 14:45:21 -08002850 const Rect* clip = !pureTranslate ? NULL : currentClipRect();
Chris Craik41541822013-05-03 16:35:54 -07002851 Rect layerBounds(FLT_MAX / 2.0f, FLT_MAX / 2.0f, FLT_MIN / 2.0f, FLT_MIN / 2.0f);
Romain Guy5b3b3522010-10-27 18:57:51 -07002852
Raph Levien996e57c2012-07-23 15:22:52 -07002853 bool status;
Victoria Lease1e546812013-06-25 14:25:17 -07002854 TextSetupFunctor functor(this, x, y, pureTranslate, alpha, mode, paint);
Chris Craik527a3aa2013-03-04 10:19:31 -08002855
2856 // don't call issuedrawcommand, do it at end of batch
2857 bool forceFinish = (drawOpMode != kDrawOpMode_Defer);
Romain Guya3dc55f2012-09-28 13:55:44 -07002858 if (CC_UNLIKELY(paint->getTextAlign() != SkPaint::kLeft_Align)) {
Raph Levien8b4072d2012-07-30 15:50:00 -07002859 SkPaint paintCopy(*paint);
2860 paintCopy.setTextAlign(SkPaint::kLeft_Align);
2861 status = fontRenderer.renderPosText(&paintCopy, clip, text, 0, bytesCount, count, x, y,
Chris Craik41541822013-05-03 16:35:54 -07002862 positions, hasActiveLayer ? &layerBounds : NULL, &functor, forceFinish);
Raph Levien996e57c2012-07-23 15:22:52 -07002863 } else {
Raph Levien8b4072d2012-07-30 15:50:00 -07002864 status = fontRenderer.renderPosText(paint, clip, text, 0, bytesCount, count, x, y,
Chris Craik41541822013-05-03 16:35:54 -07002865 positions, hasActiveLayer ? &layerBounds : NULL, &functor, forceFinish);
Raph Levien996e57c2012-07-23 15:22:52 -07002866 }
Romain Guy4ff0cf42012-08-06 14:51:10 -07002867
Chris Craik527a3aa2013-03-04 10:19:31 -08002868 if ((status || drawOpMode != kDrawOpMode_Immediate) && hasActiveLayer) {
Romain Guy624234f2013-03-05 16:43:31 -08002869 if (!pureTranslate) {
Chris Craik41541822013-05-03 16:35:54 -07002870 transform.mapRect(layerBounds);
Romain Guya4adcf02013-02-28 12:15:35 -08002871 }
Chris Craik41541822013-05-03 16:35:54 -07002872 dirtyLayerUnchecked(layerBounds, getRegion());
Romain Guy5b3b3522010-10-27 18:57:51 -07002873 }
Romain Guy694b5192010-07-21 21:33:20 -07002874
Chris Craike63f7c622013-10-17 10:30:55 -07002875 drawTextDecorations(totalAdvance, oldX, oldY, paint);
Chet Haase48659092012-05-31 15:21:51 -07002876
2877 return DrawGlInfo::kStatusDrew;
Romain Guy694b5192010-07-21 21:33:20 -07002878}
2879
Chris Craikd218a922014-01-02 17:13:34 -08002880status_t OpenGLRenderer::drawTextOnPath(const char* text, int bytesCount, int count,
2881 const SkPath* path, float hOffset, float vOffset, const SkPaint* paint) {
Chris Craikd6b65f62014-01-01 14:45:21 -08002882 if (text == NULL || count == 0 || currentSnapshot()->isIgnored() || canSkipText(paint)) {
Chet Haase48659092012-05-31 15:21:51 -07002883 return DrawGlInfo::kStatusDone;
Romain Guy03d58522012-02-24 17:54:07 -08002884 }
2885
Chris Craik39a908c2013-06-13 14:39:01 -07002886 // TODO: avoid scissor by calculating maximum bounds using path bounds + font metrics
2887 mCaches.enableScissor();
2888
Romain Guyb1d0a4e2012-07-13 18:25:35 -07002889 FontRenderer& fontRenderer = mCaches.fontRenderer->getFontRenderer(paint);
Chris Craik59744b72014-07-01 17:56:52 -07002890 fontRenderer.setFont(paint, SkMatrix::I());
Romain Guy257ae352013-03-20 16:31:12 -07002891 fontRenderer.setTextureFiltering(true);
Romain Guy03d58522012-02-24 17:54:07 -08002892
2893 int alpha;
2894 SkXfermode::Mode mode;
2895 getAlphaAndMode(paint, &alpha, &mode);
Victoria Lease1e546812013-06-25 14:25:17 -07002896 TextSetupFunctor functor(this, 0.0f, 0.0f, false, alpha, mode, paint);
Romain Guy03d58522012-02-24 17:54:07 -08002897
Romain Guy97771732012-02-28 18:17:02 -08002898 const Rect* clip = &mSnapshot->getLocalClip();
2899 Rect bounds(FLT_MAX / 2.0f, FLT_MAX / 2.0f, FLT_MIN / 2.0f, FLT_MIN / 2.0f);
Romain Guy03d58522012-02-24 17:54:07 -08002900
Romain Guy97771732012-02-28 18:17:02 -08002901 const bool hasActiveLayer = hasLayer();
Romain Guy97771732012-02-28 18:17:02 -08002902
2903 if (fontRenderer.renderTextOnPath(paint, clip, text, 0, bytesCount, count, path,
Victoria Lease1e546812013-06-25 14:25:17 -07002904 hOffset, vOffset, hasActiveLayer ? &bounds : NULL, &functor)) {
Romain Guy97771732012-02-28 18:17:02 -08002905 if (hasActiveLayer) {
Chris Craikd6b65f62014-01-01 14:45:21 -08002906 currentTransform()->mapRect(bounds);
Romain Guy97771732012-02-28 18:17:02 -08002907 dirtyLayerUnchecked(bounds, getRegion());
2908 }
Romain Guy97771732012-02-28 18:17:02 -08002909 }
Chet Haase48659092012-05-31 15:21:51 -07002910
2911 return DrawGlInfo::kStatusDrew;
Romain Guy325740f2012-02-24 16:48:34 -08002912}
2913
Chris Craikd218a922014-01-02 17:13:34 -08002914status_t OpenGLRenderer::drawPath(const SkPath* path, const SkPaint* paint) {
Chris Craikd6b65f62014-01-01 14:45:21 -08002915 if (currentSnapshot()->isIgnored()) return DrawGlInfo::kStatusDone;
Romain Guydbc26d22010-10-11 17:58:29 -07002916
Romain Guya1d3c912011-12-13 14:55:06 -08002917 mCaches.activeTexture(0);
Romain Guy7fbcc042010-08-04 15:40:07 -07002918
Romain Guyfb8b7632010-08-23 21:05:08 -07002919 const PathTexture* texture = mCaches.pathCache.get(path, paint);
Chet Haase48659092012-05-31 15:21:51 -07002920 if (!texture) return DrawGlInfo::kStatusDone;
Romain Guy22158e12010-08-06 11:18:34 -07002921 const AutoTexture autoCleanup(texture);
Romain Guy7fbcc042010-08-04 15:40:07 -07002922
Romain Guy8b55f372010-08-18 17:10:07 -07002923 const float x = texture->left - texture->offset;
2924 const float y = texture->top - texture->offset;
2925
Romain Guy01d58e42011-01-19 21:54:02 -08002926 drawPathTexture(texture, x, y, paint);
Chet Haase48659092012-05-31 15:21:51 -07002927
2928 return DrawGlInfo::kStatusDrew;
Romain Guy7fbcc042010-08-04 15:40:07 -07002929}
2930
Chris Craika08f95c2013-03-15 17:24:33 -07002931status_t OpenGLRenderer::drawLayer(Layer* layer, float x, float y) {
Romain Guy35643dd2012-09-18 15:40:58 -07002932 if (!layer) {
2933 return DrawGlInfo::kStatusDone;
2934 }
2935
Romain Guyb2e2f242012-10-17 18:18:35 -07002936 mat4* transform = NULL;
2937 if (layer->isTextureLayer()) {
2938 transform = &layer->getTransform();
2939 if (!transform->isIdentity()) {
Chris Craik3f0854292014-04-15 16:18:08 -07002940 save(SkCanvas::kMatrix_SaveFlag);
Chris Craik14e51302013-12-30 15:32:54 -08002941 concatMatrix(*transform);
Romain Guyb2e2f242012-10-17 18:18:35 -07002942 }
2943 }
2944
Chris Craik39a908c2013-06-13 14:39:01 -07002945 bool clipRequired = false;
Chris Craikf0a59072013-11-19 18:00:46 -08002946 const bool rejected = calculateQuickRejectForScissor(x, y,
Chris Craikdeeda3d2014-05-05 19:09:33 -07002947 x + layer->layer.getWidth(), y + layer->layer.getHeight(), &clipRequired, NULL, false);
Romain Guy35643dd2012-09-18 15:40:58 -07002948
2949 if (rejected) {
Romain Guyb2e2f242012-10-17 18:18:35 -07002950 if (transform && !transform->isIdentity()) {
2951 restore();
2952 }
Chet Haase48659092012-05-31 15:21:51 -07002953 return DrawGlInfo::kStatusDone;
Romain Guy6c319ca2011-01-11 14:29:25 -08002954 }
2955
Chris Craik62d307c2014-07-29 10:35:13 -07002956 EVENT_LOGD("drawLayer," RECT_STRING ", clipRequired %d", x, y,
2957 x + layer->layer.getWidth(), y + layer->layer.getHeight(), clipRequired);
2958
Romain Guy5bb3c732012-11-29 17:52:58 -08002959 updateLayer(layer, true);
Romain Guy2bf68f02012-03-02 13:37:47 -08002960
Chris Craik39a908c2013-06-13 14:39:01 -07002961 mCaches.setScissorEnabled(mScissorOptimizationDisabled || clipRequired);
Romain Guya1d3c912011-12-13 14:55:06 -08002962 mCaches.activeTexture(0);
Romain Guy6c319ca2011-01-11 14:29:25 -08002963
Romain Guy211370f2012-02-01 16:10:55 -08002964 if (CC_LIKELY(!layer->region.isEmpty())) {
Romain Guyc88e3572011-01-22 00:32:12 -08002965 if (layer->region.isRect()) {
Chris Craik34416ea2013-04-15 16:08:28 -07002966 DRAW_DOUBLE_STENCIL_IF(!layer->hasDrawnSinceUpdate,
2967 composeLayerRect(layer, layer->regionRect));
Romain Guyc88e3572011-01-22 00:32:12 -08002968 } else if (layer->mesh) {
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002969
Chris Craik16ecda52013-03-29 10:59:59 -07002970 const float a = getLayerAlpha(layer);
Romain Guyc88e3572011-01-22 00:32:12 -08002971 setupDraw();
2972 setupDrawWithTexture();
Romain Guy81683962011-01-24 20:40:18 -08002973 setupDrawColor(a, a, a, a);
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002974 setupDrawColorFilter(layer->getColorFilter());
2975 setupDrawBlending(layer);
Romain Guyc88e3572011-01-22 00:32:12 -08002976 setupDrawProgram();
Romain Guyc88e3572011-01-22 00:32:12 -08002977 setupDrawPureColorUniforms();
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05002978 setupDrawColorFilterUniforms(layer->getColorFilter());
Romain Guy9ace8f52011-07-07 20:50:11 -07002979 setupDrawTexture(layer->getTexture());
Chris Craikd6b65f62014-01-01 14:45:21 -08002980 if (CC_LIKELY(currentTransform()->isPureTranslate())) {
2981 int tx = (int) floorf(x + currentTransform()->getTranslateX() + 0.5f);
2982 int ty = (int) floorf(y + currentTransform()->getTranslateY() + 0.5f);
Romain Guy9ace8f52011-07-07 20:50:11 -07002983
Romain Guyd21b6e12011-11-30 20:21:23 -08002984 layer->setFilter(GL_NEAREST);
Chris Craik4063a0e2013-11-15 16:06:56 -08002985 setupDrawModelView(kModelViewMode_Translate, false, tx, ty,
Romain Guy4ff0cf42012-08-06 14:51:10 -07002986 tx + layer->layer.getWidth(), ty + layer->layer.getHeight(), true);
Romain Guy9ace8f52011-07-07 20:50:11 -07002987 } else {
Romain Guyd21b6e12011-11-30 20:21:23 -08002988 layer->setFilter(GL_LINEAR);
Chris Craik4063a0e2013-11-15 16:06:56 -08002989 setupDrawModelView(kModelViewMode_Translate, false, x, y,
Romain Guy9ace8f52011-07-07 20:50:11 -07002990 x + layer->layer.getWidth(), y + layer->layer.getHeight());
2991 }
Romain Guyf219da52011-01-16 12:54:25 -08002992
Romain Guy448455f2013-07-22 13:57:50 -07002993 TextureVertex* mesh = &layer->mesh[0];
2994 GLsizei elementsCount = layer->meshElementCount;
2995
2996 while (elementsCount > 0) {
2997 GLsizei drawCount = min(elementsCount, (GLsizei) gMaxNumberOfQuads * 6);
2998
Romain Guy3380cfd2013-08-15 16:57:57 -07002999 setupDrawMeshIndices(&mesh[0].x, &mesh[0].u);
Romain Guy448455f2013-07-22 13:57:50 -07003000 DRAW_DOUBLE_STENCIL_IF(!layer->hasDrawnSinceUpdate,
3001 glDrawElements(GL_TRIANGLES, drawCount, GL_UNSIGNED_SHORT, NULL));
3002
3003 elementsCount -= drawCount;
3004 // Though there are 4 vertices in a quad, we use 6 indices per
3005 // quad to draw with GL_TRIANGLES
3006 mesh += (drawCount / 6) * 4;
3007 }
Romain Guyf219da52011-01-16 12:54:25 -08003008
Romain Guy3a3133d2011-02-01 22:59:58 -08003009#if DEBUG_LAYERS_AS_REGIONS
Chris Craike63f7c622013-10-17 10:30:55 -07003010 drawRegionRectsDebug(layer->region);
Romain Guy3a3133d2011-02-01 22:59:58 -08003011#endif
Romain Guyc88e3572011-01-22 00:32:12 -08003012 }
Romain Guy4ff0cf42012-08-06 14:51:10 -07003013
Romain Guy5bb3c732012-11-29 17:52:58 -08003014 if (layer->debugDrawUpdate) {
3015 layer->debugDrawUpdate = false;
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003016
3017 SkPaint paint;
3018 paint.setColor(0x7f00ff00);
3019 drawColorRect(x, y, x + layer->layer.getWidth(), y + layer->layer.getHeight(), &paint);
Romain Guy4ff0cf42012-08-06 14:51:10 -07003020 }
Romain Guyf219da52011-01-16 12:54:25 -08003021 }
Chris Craik34416ea2013-04-15 16:08:28 -07003022 layer->hasDrawnSinceUpdate = true;
Chet Haase48659092012-05-31 15:21:51 -07003023
Romain Guyb2e2f242012-10-17 18:18:35 -07003024 if (transform && !transform->isIdentity()) {
3025 restore();
3026 }
3027
Chet Haase48659092012-05-31 15:21:51 -07003028 return DrawGlInfo::kStatusDrew;
Romain Guy6c319ca2011-01-11 14:29:25 -08003029}
3030
Romain Guy6926c722010-07-12 20:20:03 -07003031///////////////////////////////////////////////////////////////////////////////
Romain Guy5ff9df62012-01-23 17:09:05 -08003032// Draw filters
3033///////////////////////////////////////////////////////////////////////////////
3034
3035void OpenGLRenderer::resetPaintFilter() {
Chris Craik527a3aa2013-03-04 10:19:31 -08003036 // when clearing the PaintFilter, the masks should also be cleared for simple DrawModifier
3037 // comparison, see MergingDrawBatch::canMergeWith
Chris Craikc3566d02013-02-04 16:16:33 -08003038 mDrawModifiers.mHasDrawFilter = false;
Chris Craik527a3aa2013-03-04 10:19:31 -08003039 mDrawModifiers.mPaintFilterClearBits = 0;
3040 mDrawModifiers.mPaintFilterSetBits = 0;
Romain Guy5ff9df62012-01-23 17:09:05 -08003041}
3042
3043void OpenGLRenderer::setupPaintFilter(int clearBits, int setBits) {
Chris Craik591be6c2014-09-11 11:09:34 -07003044 // TODO: don't bother with boolean, it's redundant with clear/set bits
Chris Craikc3566d02013-02-04 16:16:33 -08003045 mDrawModifiers.mHasDrawFilter = true;
3046 mDrawModifiers.mPaintFilterClearBits = clearBits & SkPaint::kAllFlags;
3047 mDrawModifiers.mPaintFilterSetBits = setBits & SkPaint::kAllFlags;
Romain Guy5ff9df62012-01-23 17:09:05 -08003048}
3049
Chris Craikd218a922014-01-02 17:13:34 -08003050const SkPaint* OpenGLRenderer::filterPaint(const SkPaint* paint) {
Chris Craik591be6c2014-09-11 11:09:34 -07003051 // TODO: use CompatFlagsDrawFilter here, and combine logic with android/graphics/DrawFilter.cpp
3052 // to avoid clobbering 0x02 paint flag
3053
3054 // Equivalent to the Java Paint's FILTER_BITMAP_FLAG.
3055 static const uint32_t sFilterBitmapFlag = 0x02;
3056
Romain Guy758724f2013-02-27 11:53:12 -08003057 if (CC_LIKELY(!mDrawModifiers.mHasDrawFilter || !paint)) {
Romain Guy758724f2013-02-27 11:53:12 -08003058 return paint;
3059 }
Romain Guy5ff9df62012-01-23 17:09:05 -08003060
Chris Craik591be6c2014-09-11 11:09:34 -07003061 const uint32_t clearBits = mDrawModifiers.mPaintFilterClearBits;
3062 const uint32_t setBits = mDrawModifiers.mPaintFilterSetBits;
Romain Guy5ff9df62012-01-23 17:09:05 -08003063
Chris Craik591be6c2014-09-11 11:09:34 -07003064 const uint32_t flags = (paint->getFlags() & ~clearBits) | setBits;
Romain Guy5ff9df62012-01-23 17:09:05 -08003065 mFilteredPaint = *paint;
Chris Craik591be6c2014-09-11 11:09:34 -07003066 mFilteredPaint.setFlags(flags);
3067
3068 // check if paint filter trying to override bitmap filter
3069 if ((clearBits | setBits) & sFilterBitmapFlag) {
3070 mFilteredPaint.setFilterLevel(flags & sFilterBitmapFlag
3071 ? SkPaint::kLow_FilterLevel : SkPaint::kNone_FilterLevel);
3072 }
Romain Guy5ff9df62012-01-23 17:09:05 -08003073
3074 return &mFilteredPaint;
3075}
3076
3077///////////////////////////////////////////////////////////////////////////////
Romain Guy6926c722010-07-12 20:20:03 -07003078// Drawing implementation
3079///////////////////////////////////////////////////////////////////////////////
3080
Chris Craikd218a922014-01-02 17:13:34 -08003081Texture* OpenGLRenderer::getTexture(const SkBitmap* bitmap) {
Romain Guy3b748a42013-04-17 18:54:38 -07003082 Texture* texture = mCaches.assetAtlas.getEntryTexture(bitmap);
3083 if (!texture) {
3084 return mCaches.textureCache.get(bitmap);
3085 }
3086 return texture;
3087}
3088
Romain Guy01d58e42011-01-19 21:54:02 -08003089void OpenGLRenderer::drawPathTexture(const PathTexture* texture,
Chris Craikd218a922014-01-02 17:13:34 -08003090 float x, float y, const SkPaint* paint) {
Chris Craikf0a59072013-11-19 18:00:46 -08003091 if (quickRejectSetupScissor(x, y, x + texture->width, y + texture->height)) {
Romain Guy01d58e42011-01-19 21:54:02 -08003092 return;
3093 }
3094
3095 int alpha;
3096 SkXfermode::Mode mode;
3097 getAlphaAndMode(paint, &alpha, &mode);
3098
3099 setupDraw();
3100 setupDrawWithTexture(true);
3101 setupDrawAlpha8Color(paint->getColor(), alpha);
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003102 setupDrawColorFilter(getColorFilter(paint));
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04003103 setupDrawShader(getShader(paint));
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003104 setupDrawBlending(paint, true);
Romain Guy01d58e42011-01-19 21:54:02 -08003105 setupDrawProgram();
Chris Craik4063a0e2013-11-15 16:06:56 -08003106 setupDrawModelView(kModelViewMode_TranslateAndScale, false,
3107 x, y, x + texture->width, y + texture->height);
Romain Guy01d58e42011-01-19 21:54:02 -08003108 setupDrawTexture(texture->id);
3109 setupDrawPureColorUniforms();
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003110 setupDrawColorFilterUniforms(getColorFilter(paint));
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04003111 setupDrawShaderUniforms(getShader(paint));
Romain Guy01d58e42011-01-19 21:54:02 -08003112 setupDrawMesh(NULL, (GLvoid*) gMeshTextureOffset);
3113
3114 glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount);
Romain Guy01d58e42011-01-19 21:54:02 -08003115}
3116
Romain Guyf607bdc2010-09-10 19:20:06 -07003117// Same values used by Skia
Romain Guy0a417492010-08-16 20:26:20 -07003118#define kStdStrikeThru_Offset (-6.0f / 21.0f)
3119#define kStdUnderline_Offset (1.0f / 9.0f)
3120#define kStdUnderline_Thickness (1.0f / 18.0f)
3121
Chris Craikd218a922014-01-02 17:13:34 -08003122void OpenGLRenderer::drawTextDecorations(float underlineWidth, float x, float y,
3123 const SkPaint* paint) {
Romain Guy0a417492010-08-16 20:26:20 -07003124 // Handle underline and strike-through
3125 uint32_t flags = paint->getFlags();
3126 if (flags & (SkPaint::kUnderlineText_Flag | SkPaint::kStrikeThruText_Flag)) {
Romain Guy726aeba2011-06-01 14:52:00 -07003127 SkPaint paintCopy(*paint);
Romain Guy0a417492010-08-16 20:26:20 -07003128
Romain Guy211370f2012-02-01 16:10:55 -08003129 if (CC_LIKELY(underlineWidth > 0.0f)) {
Romain Guy726aeba2011-06-01 14:52:00 -07003130 const float textSize = paintCopy.getTextSize();
Romain Guyf6834472011-01-23 13:32:12 -08003131 const float strokeWidth = fmax(textSize * kStdUnderline_Thickness, 1.0f);
Romain Guy0a417492010-08-16 20:26:20 -07003132
Raph Levien8b4072d2012-07-30 15:50:00 -07003133 const float left = x;
Romain Guy0a417492010-08-16 20:26:20 -07003134 float top = 0.0f;
Romain Guye20ecbd2010-09-22 19:49:04 -07003135
Romain Guyf6834472011-01-23 13:32:12 -08003136 int linesCount = 0;
3137 if (flags & SkPaint::kUnderlineText_Flag) linesCount++;
3138 if (flags & SkPaint::kStrikeThruText_Flag) linesCount++;
3139
3140 const int pointsCount = 4 * linesCount;
Romain Guye20ecbd2010-09-22 19:49:04 -07003141 float points[pointsCount];
3142 int currentPoint = 0;
Romain Guy0a417492010-08-16 20:26:20 -07003143
3144 if (flags & SkPaint::kUnderlineText_Flag) {
3145 top = y + textSize * kStdUnderline_Offset;
Romain Guye20ecbd2010-09-22 19:49:04 -07003146 points[currentPoint++] = left;
3147 points[currentPoint++] = top;
3148 points[currentPoint++] = left + underlineWidth;
3149 points[currentPoint++] = top;
Romain Guy0a417492010-08-16 20:26:20 -07003150 }
3151
3152 if (flags & SkPaint::kStrikeThruText_Flag) {
3153 top = y + textSize * kStdStrikeThru_Offset;
Romain Guye20ecbd2010-09-22 19:49:04 -07003154 points[currentPoint++] = left;
3155 points[currentPoint++] = top;
3156 points[currentPoint++] = left + underlineWidth;
3157 points[currentPoint++] = top;
Romain Guy0a417492010-08-16 20:26:20 -07003158 }
Romain Guye20ecbd2010-09-22 19:49:04 -07003159
Romain Guy726aeba2011-06-01 14:52:00 -07003160 paintCopy.setStrokeWidth(strokeWidth);
Romain Guye20ecbd2010-09-22 19:49:04 -07003161
Romain Guy726aeba2011-06-01 14:52:00 -07003162 drawLines(&points[0], pointsCount, &paintCopy);
Romain Guy0a417492010-08-16 20:26:20 -07003163 }
3164 }
3165}
3166
Chris Craikd218a922014-01-02 17:13:34 -08003167status_t OpenGLRenderer::drawRects(const float* rects, int count, const SkPaint* paint) {
Chris Craikd6b65f62014-01-01 14:45:21 -08003168 if (currentSnapshot()->isIgnored()) {
Romain Guy672433d2013-01-04 19:05:13 -08003169 return DrawGlInfo::kStatusDone;
3170 }
3171
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003172 return drawColorRects(rects, count, paint, false, true, true);
Romain Guy735738c2012-12-03 12:34:51 -08003173}
3174
Chris Craikb79a3e32014-03-11 12:20:17 -07003175static void mapPointFakeZ(Vector3& point, const mat4& transformXY, const mat4& transformZ) {
3176 // map z coordinate with true 3d matrix
3177 point.z = transformZ.mapZ(point);
3178
3179 // map x,y coordinates with draw/Skia matrix
3180 transformXY.mapPoint(point.x, point.y);
3181}
3182
Chris Craik05f3d6e2014-06-02 16:27:04 -07003183status_t OpenGLRenderer::drawShadow(float casterAlpha,
3184 const VertexBuffer* ambientShadowVertexBuffer, const VertexBuffer* spotShadowVertexBuffer) {
Chris Craikd6b65f62014-01-01 14:45:21 -08003185 if (currentSnapshot()->isIgnored()) return DrawGlInfo::kStatusDone;
Chris Craikf57776b2013-10-25 18:30:17 -07003186
Chris Craik15a07a22014-01-26 13:43:53 -08003187 // TODO: use quickRejectWithScissor. For now, always force enable scissor.
Chris Craikf57776b2013-10-25 18:30:17 -07003188 mCaches.enableScissor();
3189
3190 SkPaint paint;
Chris Craikba9b6132013-12-15 17:10:19 -08003191 paint.setAntiAlias(true); // want to use AlphaVertex
Chris Craikf57776b2013-10-25 18:30:17 -07003192
ztenghui14a4e352014-08-13 10:44:39 -07003193 // The caller has made sure casterAlpha > 0.
3194 float ambientShadowAlpha = mAmbientShadowAlpha;
3195 if (CC_UNLIKELY(mCaches.propertyAmbientShadowStrength >= 0)) {
3196 ambientShadowAlpha = mCaches.propertyAmbientShadowStrength;
3197 }
3198 if (ambientShadowVertexBuffer && ambientShadowAlpha > 0) {
3199 paint.setARGB(casterAlpha * ambientShadowAlpha, 0, 0, 0);
Chris Craik91a8c7c2014-08-12 14:31:35 -07003200 drawVertexBuffer(*ambientShadowVertexBuffer, &paint, kVertexBuffer_ShadowInterp);
ztenghuief94c6f2014-02-13 17:09:45 -08003201 }
ztenghui7b4516e2014-01-07 10:42:55 -08003202
ztenghui14a4e352014-08-13 10:44:39 -07003203 float spotShadowAlpha = mSpotShadowAlpha;
3204 if (CC_UNLIKELY(mCaches.propertySpotShadowStrength >= 0)) {
3205 spotShadowAlpha = mCaches.propertySpotShadowStrength;
3206 }
3207 if (spotShadowVertexBuffer && spotShadowAlpha > 0) {
3208 paint.setARGB(casterAlpha * spotShadowAlpha, 0, 0, 0);
Chris Craik91a8c7c2014-08-12 14:31:35 -07003209 drawVertexBuffer(*spotShadowVertexBuffer, &paint, kVertexBuffer_ShadowInterp);
ztenghuief94c6f2014-02-13 17:09:45 -08003210 }
ztenghui7b4516e2014-01-07 10:42:55 -08003211
3212 return DrawGlInfo::kStatusDrew;
Chris Craikf57776b2013-10-25 18:30:17 -07003213}
3214
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003215status_t OpenGLRenderer::drawColorRects(const float* rects, int count, const SkPaint* paint,
3216 bool ignoreTransform, bool dirty, bool clip) {
Romain Guy3b753822013-03-05 10:27:35 -08003217 if (count == 0) {
3218 return DrawGlInfo::kStatusDone;
3219 }
Romain Guy735738c2012-12-03 12:34:51 -08003220
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003221 int color = paint->getColor();
3222 // If a shader is set, preserve only the alpha
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04003223 if (getShader(paint)) {
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003224 color |= 0x00ffffff;
3225 }
3226
Romain Guy672433d2013-01-04 19:05:13 -08003227 float left = FLT_MAX;
3228 float top = FLT_MAX;
3229 float right = FLT_MIN;
3230 float bottom = FLT_MIN;
3231
Romain Guy448455f2013-07-22 13:57:50 -07003232 Vertex mesh[count];
Romain Guy672433d2013-01-04 19:05:13 -08003233 Vertex* vertex = mesh;
3234
Chris Craik2af46352012-11-26 18:30:17 -08003235 for (int index = 0; index < count; index += 4) {
Romain Guy672433d2013-01-04 19:05:13 -08003236 float l = rects[index + 0];
3237 float t = rects[index + 1];
3238 float r = rects[index + 2];
3239 float b = rects[index + 3];
3240
Romain Guy3b753822013-03-05 10:27:35 -08003241 Vertex::set(vertex++, l, t);
3242 Vertex::set(vertex++, r, t);
3243 Vertex::set(vertex++, l, b);
Romain Guy3b753822013-03-05 10:27:35 -08003244 Vertex::set(vertex++, r, b);
Romain Guy672433d2013-01-04 19:05:13 -08003245
Romain Guy3b753822013-03-05 10:27:35 -08003246 left = fminf(left, l);
3247 top = fminf(top, t);
3248 right = fmaxf(right, r);
3249 bottom = fmaxf(bottom, b);
Romain Guy672433d2013-01-04 19:05:13 -08003250 }
3251
Chris Craikf0a59072013-11-19 18:00:46 -08003252 if (clip && quickRejectSetupScissor(left, top, right, bottom)) {
Romain Guya362c692013-02-04 13:50:16 -08003253 return DrawGlInfo::kStatusDone;
3254 }
Romain Guy672433d2013-01-04 19:05:13 -08003255
Romain Guy672433d2013-01-04 19:05:13 -08003256 setupDraw();
3257 setupDrawNoTexture();
Chris Craikd6b65f62014-01-01 14:45:21 -08003258 setupDrawColor(color, ((color >> 24) & 0xFF) * currentSnapshot()->alpha);
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04003259 setupDrawShader(getShader(paint));
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003260 setupDrawColorFilter(getColorFilter(paint));
3261 setupDrawBlending(paint);
Romain Guy672433d2013-01-04 19:05:13 -08003262 setupDrawProgram();
3263 setupDrawDirtyRegionsDisabled();
Chris Craik4063a0e2013-11-15 16:06:56 -08003264 setupDrawModelView(kModelViewMode_Translate, false,
3265 0.0f, 0.0f, 0.0f, 0.0f, ignoreTransform);
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04003266 setupDrawColorUniforms(getShader(paint));
3267 setupDrawShaderUniforms(getShader(paint));
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003268 setupDrawColorFilterUniforms(getColorFilter(paint));
Romain Guy672433d2013-01-04 19:05:13 -08003269
Romain Guy8ce00302013-01-15 18:51:42 -08003270 if (dirty && hasLayer()) {
Chris Craikd6b65f62014-01-01 14:45:21 -08003271 dirtyLayer(left, top, right, bottom, *currentTransform());
Romain Guy672433d2013-01-04 19:05:13 -08003272 }
3273
Chris Craik4063a0e2013-11-15 16:06:56 -08003274 issueIndexedQuadDraw(&mesh[0], count / 4);
Romain Guy672433d2013-01-04 19:05:13 -08003275
3276 return DrawGlInfo::kStatusDrew;
3277}
3278
Romain Guy026c5e162010-06-28 17:12:22 -07003279void OpenGLRenderer::drawColorRect(float left, float top, float right, float bottom,
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003280 const SkPaint* paint, bool ignoreTransform) {
3281 int color = paint->getColor();
Romain Guyd27977d2010-07-14 19:18:51 -07003282 // If a shader is set, preserve only the alpha
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04003283 if (getShader(paint)) {
Romain Guyd27977d2010-07-14 19:18:51 -07003284 color |= 0x00ffffff;
3285 }
3286
Romain Guy70ca14e2010-12-13 18:24:33 -08003287 setupDraw();
Romain Guy15bc6432011-12-13 13:11:32 -08003288 setupDrawNoTexture();
Chris Craikd6b65f62014-01-01 14:45:21 -08003289 setupDrawColor(color, ((color >> 24) & 0xFF) * currentSnapshot()->alpha);
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04003290 setupDrawShader(getShader(paint));
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003291 setupDrawColorFilter(getColorFilter(paint));
3292 setupDrawBlending(paint);
Romain Guy70ca14e2010-12-13 18:24:33 -08003293 setupDrawProgram();
Chris Craik4063a0e2013-11-15 16:06:56 -08003294 setupDrawModelView(kModelViewMode_TranslateAndScale, false,
3295 left, top, right, bottom, ignoreTransform);
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04003296 setupDrawColorUniforms(getShader(paint));
3297 setupDrawShaderUniforms(getShader(paint), ignoreTransform);
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003298 setupDrawColorFilterUniforms(getColorFilter(paint));
Romain Guy70ca14e2010-12-13 18:24:33 -08003299 setupDrawSimpleMesh();
Romain Guyc0ac1932010-07-19 18:43:02 -07003300
Romain Guyc95c8d62010-09-17 15:31:32 -07003301 glDrawArrays(GL_TRIANGLE_STRIP, 0, gMeshCount);
3302}
3303
Romain Guy82ba8142010-07-09 13:25:56 -07003304void OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom,
Chris Craikd218a922014-01-02 17:13:34 -08003305 Texture* texture, const SkPaint* paint) {
Romain Guyd21b6e12011-11-30 20:21:23 -08003306 texture->setWrap(GL_CLAMP_TO_EDGE, true);
Romain Guy8164c2d2010-10-25 18:03:28 -07003307
Romain Guy3b748a42013-04-17 18:54:38 -07003308 GLvoid* vertices = (GLvoid*) NULL;
3309 GLvoid* texCoords = (GLvoid*) gMeshTextureOffset;
3310
3311 if (texture->uvMapper) {
Romain Guy3380cfd2013-08-15 16:57:57 -07003312 vertices = &mMeshVertices[0].x;
3313 texCoords = &mMeshVertices[0].u;
Romain Guy3b748a42013-04-17 18:54:38 -07003314
3315 Rect uvs(0.0f, 0.0f, 1.0f, 1.0f);
3316 texture->uvMapper->map(uvs);
3317
3318 resetDrawTextureTexCoords(uvs.left, uvs.top, uvs.right, uvs.bottom);
3319 }
3320
Chris Craikd6b65f62014-01-01 14:45:21 -08003321 if (CC_LIKELY(currentTransform()->isPureTranslate())) {
3322 const float x = (int) floorf(left + currentTransform()->getTranslateX() + 0.5f);
3323 const float y = (int) floorf(top + currentTransform()->getTranslateY() + 0.5f);
Romain Guy6620c6d2010-12-06 18:07:02 -08003324
Romain Guyd21b6e12011-11-30 20:21:23 -08003325 texture->setFilter(GL_NEAREST, true);
Romain Guy6620c6d2010-12-06 18:07:02 -08003326 drawTextureMesh(x, y, x + texture->width, y + texture->height, texture->id,
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003327 paint, texture->blend, vertices, texCoords,
Romain Guy3b748a42013-04-17 18:54:38 -07003328 GL_TRIANGLE_STRIP, gMeshCount, false, true);
Romain Guy6620c6d2010-12-06 18:07:02 -08003329 } else {
Chris Craik678625242014-02-28 12:26:34 -08003330 texture->setFilter(getFilter(paint), true);
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003331 drawTextureMesh(left, top, right, bottom, texture->id, paint,
Romain Guy3b748a42013-04-17 18:54:38 -07003332 texture->blend, vertices, texCoords, GL_TRIANGLE_STRIP, gMeshCount);
3333 }
3334
3335 if (texture->uvMapper) {
3336 resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f);
Romain Guy6620c6d2010-12-06 18:07:02 -08003337 }
Romain Guy85bf02f2010-06-22 13:11:24 -07003338}
3339
Romain Guyf7f93552010-07-08 19:17:03 -07003340void OpenGLRenderer::drawTextureMesh(float left, float top, float right, float bottom,
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003341 GLuint texture, const SkPaint* paint, bool blend,
Romain Guy6820ac82010-09-15 18:11:50 -07003342 GLvoid* vertices, GLvoid* texCoords, GLenum drawMode, GLsizei elementsCount,
Chris Craik4063a0e2013-11-15 16:06:56 -08003343 bool swapSrcDst, bool ignoreTransform, GLuint vbo,
3344 ModelViewMode modelViewMode, bool dirty) {
Romain Guy70ca14e2010-12-13 18:24:33 -08003345
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003346 int a;
3347 SkXfermode::Mode mode;
3348 getAlphaAndMode(paint, &a, &mode);
3349 const float alpha = a / 255.0f;
3350
Romain Guy746b7402010-10-26 16:27:31 -07003351 setupDraw();
Romain Guy70ca14e2010-12-13 18:24:33 -08003352 setupDrawWithTexture();
3353 setupDrawColor(alpha, alpha, alpha, alpha);
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003354 setupDrawColorFilter(getColorFilter(paint));
3355 setupDrawBlending(paint, blend, swapSrcDst);
Romain Guy70ca14e2010-12-13 18:24:33 -08003356 setupDrawProgram();
Romain Guy886b2752013-01-04 12:26:18 -08003357 if (!dirty) setupDrawDirtyRegionsDisabled();
Chris Craik4063a0e2013-11-15 16:06:56 -08003358 setupDrawModelView(modelViewMode, false, left, top, right, bottom, ignoreTransform);
Romain Guy886b2752013-01-04 12:26:18 -08003359 setupDrawTexture(texture);
Romain Guy86568192010-12-14 15:55:39 -08003360 setupDrawPureColorUniforms();
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003361 setupDrawColorFilterUniforms(getColorFilter(paint));
Romain Guy70ca14e2010-12-13 18:24:33 -08003362 setupDrawMesh(vertices, texCoords, vbo);
Romain Guydb1938e2010-08-02 18:50:22 -07003363
Romain Guy6820ac82010-09-15 18:11:50 -07003364 glDrawArrays(drawMode, 0, elementsCount);
Romain Guy82ba8142010-07-09 13:25:56 -07003365}
3366
Romain Guy3b748a42013-04-17 18:54:38 -07003367void OpenGLRenderer::drawIndexedTextureMesh(float left, float top, float right, float bottom,
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003368 GLuint texture, const SkPaint* paint, bool blend,
Romain Guy3b748a42013-04-17 18:54:38 -07003369 GLvoid* vertices, GLvoid* texCoords, GLenum drawMode, GLsizei elementsCount,
Chris Craik4063a0e2013-11-15 16:06:56 -08003370 bool swapSrcDst, bool ignoreTransform, GLuint vbo,
3371 ModelViewMode modelViewMode, bool dirty) {
Romain Guy3b748a42013-04-17 18:54:38 -07003372
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003373 int a;
3374 SkXfermode::Mode mode;
3375 getAlphaAndMode(paint, &a, &mode);
3376 const float alpha = a / 255.0f;
3377
Romain Guy3b748a42013-04-17 18:54:38 -07003378 setupDraw();
3379 setupDrawWithTexture();
3380 setupDrawColor(alpha, alpha, alpha, alpha);
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003381 setupDrawColorFilter(getColorFilter(paint));
3382 setupDrawBlending(paint, blend, swapSrcDst);
Romain Guy3b748a42013-04-17 18:54:38 -07003383 setupDrawProgram();
3384 if (!dirty) setupDrawDirtyRegionsDisabled();
Chris Craik4063a0e2013-11-15 16:06:56 -08003385 setupDrawModelView(modelViewMode, false, left, top, right, bottom, ignoreTransform);
Romain Guy3b748a42013-04-17 18:54:38 -07003386 setupDrawTexture(texture);
3387 setupDrawPureColorUniforms();
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003388 setupDrawColorFilterUniforms(getColorFilter(paint));
Romain Guy3b748a42013-04-17 18:54:38 -07003389 setupDrawMeshIndices(vertices, texCoords, vbo);
3390
3391 glDrawElements(drawMode, elementsCount, GL_UNSIGNED_SHORT, NULL);
Romain Guy3b748a42013-04-17 18:54:38 -07003392}
3393
Romain Guy886b2752013-01-04 12:26:18 -08003394void OpenGLRenderer::drawAlpha8TextureMesh(float left, float top, float right, float bottom,
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003395 GLuint texture, const SkPaint* paint,
Romain Guy886b2752013-01-04 12:26:18 -08003396 GLvoid* vertices, GLvoid* texCoords, GLenum drawMode, GLsizei elementsCount,
Chris Craik4063a0e2013-11-15 16:06:56 -08003397 bool ignoreTransform, ModelViewMode modelViewMode, bool dirty) {
Romain Guy886b2752013-01-04 12:26:18 -08003398
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003399 int color = paint != NULL ? paint->getColor() : 0;
3400 int alpha;
3401 SkXfermode::Mode mode;
3402 getAlphaAndMode(paint, &alpha, &mode);
3403
Romain Guy886b2752013-01-04 12:26:18 -08003404 setupDraw();
3405 setupDrawWithTexture(true);
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003406 if (paint != NULL) {
Romain Guy886b2752013-01-04 12:26:18 -08003407 setupDrawAlpha8Color(color, alpha);
3408 }
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003409 setupDrawColorFilter(getColorFilter(paint));
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04003410 setupDrawShader(getShader(paint));
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003411 setupDrawBlending(paint, true);
Romain Guy886b2752013-01-04 12:26:18 -08003412 setupDrawProgram();
3413 if (!dirty) setupDrawDirtyRegionsDisabled();
Chris Craik4063a0e2013-11-15 16:06:56 -08003414 setupDrawModelView(modelViewMode, false, left, top, right, bottom, ignoreTransform);
Romain Guy886b2752013-01-04 12:26:18 -08003415 setupDrawTexture(texture);
3416 setupDrawPureColorUniforms();
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003417 setupDrawColorFilterUniforms(getColorFilter(paint));
Leon Scroggins IIId1ad5e62014-05-05 12:50:38 -04003418 setupDrawShaderUniforms(getShader(paint), ignoreTransform);
Romain Guy886b2752013-01-04 12:26:18 -08003419 setupDrawMesh(vertices, texCoords);
3420
3421 glDrawArrays(drawMode, 0, elementsCount);
Romain Guy886b2752013-01-04 12:26:18 -08003422}
3423
Romain Guya5aed0d2010-09-09 14:42:43 -07003424void OpenGLRenderer::chooseBlending(bool blend, SkXfermode::Mode mode,
Romain Guyf607bdc2010-09-10 19:20:06 -07003425 ProgramDescription& description, bool swapSrcDst) {
Chris Craikdeeda3d2014-05-05 19:09:33 -07003426
3427 if (mSnapshot->roundRectClipState != NULL /*&& !mSkipOutlineClip*/) {
3428 blend = true;
3429 mDescription.hasRoundRectClip = true;
3430 }
3431 mSkipOutlineClip = true;
3432
Romain Guy82ba8142010-07-09 13:25:56 -07003433 blend = blend || mode != SkXfermode::kSrcOver_Mode;
Romain Guyc189ef52012-04-25 20:02:53 -07003434
Romain Guy82ba8142010-07-09 13:25:56 -07003435 if (blend) {
Romain Guy82bc7a72012-01-03 14:13:39 -08003436 // These blend modes are not supported by OpenGL directly and have
3437 // to be implemented using shaders. Since the shader will perform
3438 // the blending, turn blending off here
3439 // If the blend mode cannot be implemented using shaders, fall
3440 // back to the default SrcOver blend mode instead
Romain Guy33fa1f72012-08-07 19:09:57 -07003441 if (CC_UNLIKELY(mode > SkXfermode::kScreen_Mode)) {
Romain Guy3bbacf22013-02-06 16:51:04 -08003442 if (CC_UNLIKELY(mExtensions.hasFramebufferFetch())) {
Romain Guya5aed0d2010-09-09 14:42:43 -07003443 description.framebufferMode = mode;
Romain Guyf607bdc2010-09-10 19:20:06 -07003444 description.swapSrcDst = swapSrcDst;
Romain Guya5aed0d2010-09-09 14:42:43 -07003445
Romain Guy82bc7a72012-01-03 14:13:39 -08003446 if (mCaches.blend) {
3447 glDisable(GL_BLEND);
3448 mCaches.blend = false;
3449 }
3450
3451 return;
3452 } else {
3453 mode = SkXfermode::kSrcOver_Mode;
Romain Guya5aed0d2010-09-09 14:42:43 -07003454 }
Romain Guy82bc7a72012-01-03 14:13:39 -08003455 }
3456
3457 if (!mCaches.blend) {
3458 glEnable(GL_BLEND);
3459 }
3460
3461 GLenum sourceMode = swapSrcDst ? gBlendsSwap[mode].src : gBlends[mode].src;
3462 GLenum destMode = swapSrcDst ? gBlendsSwap[mode].dst : gBlends[mode].dst;
3463
3464 if (sourceMode != mCaches.lastSrcMode || destMode != mCaches.lastDstMode) {
3465 glBlendFunc(sourceMode, destMode);
3466 mCaches.lastSrcMode = sourceMode;
3467 mCaches.lastDstMode = destMode;
Romain Guy82ba8142010-07-09 13:25:56 -07003468 }
Romain Guyfb8b7632010-08-23 21:05:08 -07003469 } else if (mCaches.blend) {
Romain Guy82ba8142010-07-09 13:25:56 -07003470 glDisable(GL_BLEND);
3471 }
Romain Guyfb8b7632010-08-23 21:05:08 -07003472 mCaches.blend = blend;
Romain Guybd6b79b2010-06-26 00:13:53 -07003473}
3474
Romain Guy889f8d12010-07-29 14:37:42 -07003475bool OpenGLRenderer::useProgram(Program* program) {
Romain Guyd27977d2010-07-14 19:18:51 -07003476 if (!program->isInUse()) {
Romain Guyfb8b7632010-08-23 21:05:08 -07003477 if (mCaches.currentProgram != NULL) mCaches.currentProgram->remove();
Romain Guyd27977d2010-07-14 19:18:51 -07003478 program->use();
Romain Guyfb8b7632010-08-23 21:05:08 -07003479 mCaches.currentProgram = program;
Romain Guy6926c722010-07-12 20:20:03 -07003480 return false;
Romain Guy260e1022010-07-12 14:41:06 -07003481 }
Romain Guy6926c722010-07-12 20:20:03 -07003482 return true;
Romain Guy260e1022010-07-12 14:41:06 -07003483}
3484
Romain Guy026c5e162010-06-28 17:12:22 -07003485void OpenGLRenderer::resetDrawTextureTexCoords(float u1, float v1, float u2, float v2) {
Romain Guyac670c02010-07-27 17:39:27 -07003486 TextureVertex* v = &mMeshVertices[0];
Romain Guy82ba8142010-07-09 13:25:56 -07003487 TextureVertex::setUV(v++, u1, v1);
3488 TextureVertex::setUV(v++, u2, v1);
3489 TextureVertex::setUV(v++, u1, v2);
3490 TextureVertex::setUV(v++, u2, v2);
Romain Guy8ba548f2010-06-30 19:21:21 -07003491}
3492
Chris Craikd218a922014-01-02 17:13:34 -08003493void OpenGLRenderer::getAlphaAndMode(const SkPaint* paint, int* alpha, SkXfermode::Mode* mode) const {
Romain Guybe6f9dc2012-07-16 12:41:17 -07003494 getAlphaAndModeDirect(paint, alpha, mode);
Chris Craik16ecda52013-03-29 10:59:59 -07003495 if (mDrawModifiers.mOverrideLayerAlpha < 1.0f) {
3496 // if drawing a layer, ignore the paint's alpha
Romain Guy87b515c2013-05-03 17:42:27 -07003497 *alpha = mDrawModifiers.mOverrideLayerAlpha * 255;
Chris Craik16ecda52013-03-29 10:59:59 -07003498 }
Chris Craikd6b65f62014-01-01 14:45:21 -08003499 *alpha *= currentSnapshot()->alpha;
Romain Guy026c5e162010-06-28 17:12:22 -07003500}
3501
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -05003502float OpenGLRenderer::getLayerAlpha(const Layer* layer) const {
Chris Craik16ecda52013-03-29 10:59:59 -07003503 float alpha;
3504 if (mDrawModifiers.mOverrideLayerAlpha < 1.0f) {
3505 alpha = mDrawModifiers.mOverrideLayerAlpha;
3506 } else {
3507 alpha = layer->getAlpha() / 255.0f;
3508 }
Chris Craikd6b65f62014-01-01 14:45:21 -08003509 return alpha * currentSnapshot()->alpha;
Chris Craik16ecda52013-03-29 10:59:59 -07003510}
3511
Romain Guy9d5316e2010-06-24 19:30:36 -07003512}; // namespace uirenderer
Romain Guye4d01122010-06-16 18:44:05 -07003513}; // namespace android