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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 Guy5b3b3522010-10-27 18:57:51 -070017#ifndef ANDROID_HWUI_OPENGL_RENDERER_H
18#define ANDROID_HWUI_OPENGL_RENDERER_H
Romain Guy9d5316e2010-06-24 19:30:36 -070019
20#include <GLES2/gl2.h>
21#include <GLES2/gl2ext.h>
Romain Guy85bf02f2010-06-22 13:11:24 -070022
Romain Guyce0537b2010-06-29 21:05:21 -070023#include <SkBitmap.h>
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -050024#include <SkCanvas.h>
25#include <SkColorFilter.h>
Romain Guyf6a11b82010-06-23 17:47:49 -070026#include <SkMatrix.h>
Romain Guyce0537b2010-06-29 21:05:21 -070027#include <SkPaint.h>
Romain Guy079ba2c2010-07-16 14:12:24 -070028#include <SkRegion.h>
Romain Guyd27977d2010-07-14 19:18:51 -070029#include <SkShader.h>
Romain Guy85bf02f2010-06-22 13:11:24 -070030#include <SkXfermode.h>
Romain Guye4d01122010-06-16 18:44:05 -070031
Derek Sollenbergerc29a0a42014-03-31 13:52:39 -040032#include <utils/Blur.h>
Chet Haasedaf98e92011-01-10 14:10:36 -080033#include <utils/Functor.h>
Romain Guybb9524b2010-06-22 18:56:38 -070034#include <utils/RefBase.h>
Romain Guyba6be8a2012-04-23 18:22:09 -070035#include <utils/SortedVector.h>
Romain Guy86942302010-09-12 13:02:16 -070036#include <utils/Vector.h>
Romain Guybb9524b2010-06-22 18:56:38 -070037
Romain Guy79537452011-10-12 13:48:51 -070038#include <cutils/compiler.h>
39
Romain Guy3b748a42013-04-17 18:54:38 -070040#include <androidfw/ResourceTypes.h>
41
Romain Guyc15008e2010-11-10 11:59:15 -080042#include "Debug.h"
Romain Guy51769a62010-07-23 00:28:00 -070043#include "Extensions.h"
Romain Guyf6a11b82010-06-23 17:47:49 -070044#include "Matrix.h"
Romain Guy5cbbce52010-06-27 22:59:20 -070045#include "Program.h"
Romain Guybb9524b2010-06-22 18:56:38 -070046#include "Rect.h"
Chris Craikb4589422013-12-26 15:13:13 -080047#include "Renderer.h"
Chris Craik14e51302013-12-30 15:32:54 -080048#include "StatefulBaseRenderer.h"
Chris Craikb4589422013-12-26 15:13:13 -080049#include "Snapshot.h"
Romain Guy3b748a42013-04-17 18:54:38 -070050#include "UvMapper.h"
Chris Craikb4589422013-12-26 15:13:13 -080051#include "Vertex.h"
Romain Guyfb8b7632010-08-23 21:05:08 -070052#include "Caches.h"
John Reck52244ff2014-05-01 21:27:37 -070053#include "CanvasProperty.h"
Romain Guybb9524b2010-06-22 18:56:38 -070054
Romain Guye4d01122010-06-16 18:44:05 -070055namespace android {
Romain Guy9d5316e2010-06-24 19:30:36 -070056namespace uirenderer {
Romain Guye4d01122010-06-16 18:44:05 -070057
Chris Craikb4589422013-12-26 15:13:13 -080058class DeferredDisplayState;
John Recke18264b2014-03-12 13:56:30 -070059class RenderNode;
Chris Craikb4589422013-12-26 15:13:13 -080060class TextSetupFunctor;
61class VertexBuffer;
62class SkiaShader;
63
Chris Craikc3566d02013-02-04 16:16:33 -080064struct DrawModifiers {
Romain Guy9b5a1a22013-08-09 14:06:29 -070065 DrawModifiers() {
66 reset();
67 }
68
69 void reset() {
70 memset(this, 0, sizeof(DrawModifiers));
71 }
72
Chris Craikc3566d02013-02-04 16:16:33 -080073 SkiaShader* mShader;
Chris Craik16ecda52013-03-29 10:59:59 -070074 float mOverrideLayerAlpha;
Chris Craikc3566d02013-02-04 16:16:33 -080075
Chris Craikc3566d02013-02-04 16:16:33 -080076 // Draw filters
77 bool mHasDrawFilter;
78 int mPaintFilterClearBits;
79 int mPaintFilterSetBits;
80};
81
Chris Craikff785832013-03-08 13:12:16 -080082enum StateDeferFlags {
83 kStateDeferFlag_Draw = 0x1,
84 kStateDeferFlag_Clip = 0x2
85};
86
Chris Craik28ce94a2013-05-31 11:38:03 -070087enum ClipSideFlags {
Chris Craika02c4ed2013-06-14 13:43:58 -070088 kClipSide_None = 0x0,
Chris Craik28ce94a2013-05-31 11:38:03 -070089 kClipSide_Left = 0x1,
90 kClipSide_Top = 0x2,
91 kClipSide_Right = 0x4,
92 kClipSide_Bottom = 0x8,
Chris Craikd72b73c2013-06-17 13:52:06 -070093 kClipSide_Full = 0xF,
94 kClipSide_ConservativeFull = 0x1F
Chris Craik28ce94a2013-05-31 11:38:03 -070095};
96
Chris Craik4063a0e2013-11-15 16:06:56 -080097/**
98 * Defines additional transformation that should be applied by the model view matrix, beyond that of
99 * the currentTransform()
100 */
101enum ModelViewMode {
102 /**
103 * Used when the model view should simply translate geometry passed to the shader. The resulting
104 * matrix will be a simple translation.
105 */
106 kModelViewMode_Translate = 0,
107
108 /**
109 * Used when the model view should translate and scale geometry. The resulting matrix will be a
110 * translation + scale. This is frequently used together with VBO 0, the (0,0,1,1) rect.
111 */
112 kModelViewMode_TranslateAndScale = 1,
113};
114
ztenghui63d41ab2014-02-14 13:13:41 -0800115enum VertexBufferMode {
116 kVertexBufferMode_Standard = 0,
ztenghui50ecf842014-03-11 16:52:30 -0700117 kVertexBufferMode_OnePolyRingShadow = 1,
118 kVertexBufferMode_TwoPolyRingShadow = 2
ztenghui63d41ab2014-02-14 13:13:41 -0800119};
120
Romain Guyf6a11b82010-06-23 17:47:49 -0700121///////////////////////////////////////////////////////////////////////////////
Romain Guyf6a11b82010-06-23 17:47:49 -0700122// Renderer
123///////////////////////////////////////////////////////////////////////////////
Romain Guy5cbbce52010-06-27 22:59:20 -0700124/**
Chris Craik14e51302013-12-30 15:32:54 -0800125 * OpenGL Renderer implementation.
Romain Guy5cbbce52010-06-27 22:59:20 -0700126 */
Chris Craik14e51302013-12-30 15:32:54 -0800127class OpenGLRenderer : public StatefulBaseRenderer {
Romain Guye4d01122010-06-16 18:44:05 -0700128public:
Romain Guy79537452011-10-12 13:48:51 -0700129 ANDROID_API OpenGLRenderer();
Romain Guye2d345e2010-09-24 18:39:22 -0700130 virtual ~OpenGLRenderer();
Romain Guye4d01122010-06-16 18:44:05 -0700131
Romain Guy87e2f7572012-09-24 11:37:12 -0700132 ANDROID_API void initProperties();
133
Romain Guyb051e892010-09-28 19:09:36 -0700134 virtual void setViewport(int width, int height);
Romain Guy7c25aab2012-10-18 15:05:02 -0700135 virtual status_t prepareDirty(float left, float top, float right, float bottom, bool opaque);
Romain Guy17112ad2012-08-07 11:24:39 -0700136 virtual void finish();
Romain Guyc89b14b2012-08-08 14:53:48 -0700137 virtual void interrupt();
Romain Guyc89b14b2012-08-08 14:53:48 -0700138 virtual void resume();
139
Romain Guy78dd96d2013-05-03 14:24:16 -0700140 ANDROID_API void setCountOverdrawEnabled(bool enabled) {
141 mCountOverdraw = enabled;
142 }
143
144 ANDROID_API float getOverdraw() {
145 return mCountOverdraw ? mOverdraw : 0.0f;
146 }
147
Romain Guy8f3b8e32012-03-27 16:33:45 -0700148 virtual status_t callDrawGLFunction(Functor* functor, Rect& dirty);
Romain Guy08ae3172010-06-21 19:35:50 -0700149
Romain Guy11cb6422012-09-21 00:39:43 -0700150 ANDROID_API void pushLayerUpdate(Layer* layer);
Romain Guye93482f2013-06-17 13:14:51 -0700151 ANDROID_API void cancelLayerUpdate(Layer* layer);
Romain Guy11cb6422012-09-21 00:39:43 -0700152 ANDROID_API void clearLayerUpdates();
Romain Guy40543602013-06-12 15:31:28 -0700153 ANDROID_API void flushLayerUpdates();
Romain Guy11cb6422012-09-21 00:39:43 -0700154
Derek Sollenbergerd44fbe52014-02-05 16:47:00 -0500155 ANDROID_API virtual int saveLayer(float left, float top, float right, float bottom,
Chris Craik3f0854292014-04-15 16:18:08 -0700156 const SkPaint* paint, int flags) {
157 return saveLayer(left, top, right, bottom, paint, flags, NULL);
158 }
159
160 // Specialized saveLayer implementation, which will pass the convexMask to an FBO layer, if
161 // created, which will in turn clip to that mask when drawn back/restored.
162 int saveLayer(float left, float top, float right, float bottom,
163 const SkPaint* paint, int flags, const SkPath* convexMask);
Romain Guybd6b79b2010-06-26 00:13:53 -0700164
Chris Craikd90144d2013-03-19 15:03:48 -0700165 int saveLayerDeferred(float left, float top, float right, float bottom,
Derek Sollenbergerd44fbe52014-02-05 16:47:00 -0500166 const SkPaint* paint, int flags);
Chris Craikd90144d2013-03-19 15:03:48 -0700167
John Recke18264b2014-03-12 13:56:30 -0700168 virtual status_t drawDisplayList(RenderNode* displayList, Rect& dirty, int32_t replayFlags = 1);
Chris Craika08f95c2013-03-15 17:24:33 -0700169 virtual status_t drawLayer(Layer* layer, float x, float y);
Chris Craikd218a922014-01-02 17:13:34 -0800170 virtual status_t drawBitmap(const SkBitmap* bitmap, float left, float top,
171 const SkPaint* paint);
172 status_t drawBitmaps(const SkBitmap* bitmap, AssetAtlas::Entry* entry, int bitmapCount,
173 TextureVertex* vertices, bool pureTranslate, const Rect& bounds, const SkPaint* paint);
174 virtual status_t drawBitmap(const SkBitmap* bitmap, const SkMatrix* matrix,
175 const SkPaint* paint);
176 virtual status_t drawBitmap(const SkBitmap* bitmap, float srcLeft, float srcTop,
Romain Guye2d345e2010-09-24 18:39:22 -0700177 float srcRight, float srcBottom, float dstLeft, float dstTop,
Chris Craikd218a922014-01-02 17:13:34 -0800178 float dstRight, float dstBottom, const SkPaint* paint);
179 virtual status_t drawBitmapData(const SkBitmap* bitmap, float left, float top,
180 const SkPaint* paint);
181 virtual status_t drawBitmapMesh(const SkBitmap* bitmap, int meshWidth, int meshHeight,
182 const float* vertices, const int* colors, const SkPaint* paint);
183 status_t drawPatches(const SkBitmap* bitmap, AssetAtlas::Entry* entry,
184 TextureVertex* vertices, uint32_t indexCount, const SkPaint* paint);
185 virtual status_t drawPatch(const SkBitmap* bitmap, const Res_png_9patch* patch,
186 float left, float top, float right, float bottom, const SkPaint* paint);
187 status_t drawPatch(const SkBitmap* bitmap, const Patch* mesh, AssetAtlas::Entry* entry,
188 float left, float top, float right, float bottom, const SkPaint* paint);
Chet Haase48659092012-05-31 15:21:51 -0700189 virtual status_t drawColor(int color, SkXfermode::Mode mode);
Chris Craikd218a922014-01-02 17:13:34 -0800190 virtual status_t drawRect(float left, float top, float right, float bottom,
191 const SkPaint* paint);
Chet Haase48659092012-05-31 15:21:51 -0700192 virtual status_t drawRoundRect(float left, float top, float right, float bottom,
Chris Craikd218a922014-01-02 17:13:34 -0800193 float rx, float ry, const SkPaint* paint);
194 virtual status_t drawCircle(float x, float y, float radius, const SkPaint* paint);
John Reck52244ff2014-05-01 21:27:37 -0700195 virtual status_t drawCircle(CanvasPropertyPrimitive* x, CanvasPropertyPrimitive* y,
196 CanvasPropertyPrimitive* radius, CanvasPropertyPaint* paint) {
197 // TODO: Remove once android_view_GLES20Canvas uses DisplayListRenderer
198 // directly
199 return drawCircle(x->value, y->value, radius->value, &paint->value);
200 }
Chris Craikd218a922014-01-02 17:13:34 -0800201 virtual status_t drawOval(float left, float top, float right, float bottom,
202 const SkPaint* paint);
Chet Haase48659092012-05-31 15:21:51 -0700203 virtual status_t drawArc(float left, float top, float right, float bottom,
Chris Craikd218a922014-01-02 17:13:34 -0800204 float startAngle, float sweepAngle, bool useCenter, const SkPaint* paint);
205 virtual status_t drawPath(const SkPath* path, const SkPaint* paint);
206 virtual status_t drawLines(const float* points, int count, const SkPaint* paint);
207 virtual status_t drawPoints(const float* points, int count, const SkPaint* paint);
208 virtual status_t drawTextOnPath(const char* text, int bytesCount, int count, const SkPath* path,
209 float hOffset, float vOffset, const SkPaint* paint);
Chet Haase48659092012-05-31 15:21:51 -0700210 virtual status_t drawPosText(const char* text, int bytesCount, int count,
Chris Craikd218a922014-01-02 17:13:34 -0800211 const float* positions, const SkPaint* paint);
Romain Guyc2525952012-07-27 16:41:22 -0700212 virtual status_t drawText(const char* text, int bytesCount, int count, float x, float y,
Chris Craikd218a922014-01-02 17:13:34 -0800213 const float* positions, const SkPaint* paint, float totalAdvance, const Rect& bounds,
Chris Craik527a3aa2013-03-04 10:19:31 -0800214 DrawOpMode drawOpMode = kDrawOpMode_Immediate);
Chris Craikd218a922014-01-02 17:13:34 -0800215 virtual status_t drawRects(const float* rects, int count, const SkPaint* paint);
Romain Guy08ae3172010-06-21 19:35:50 -0700216
Chris Craikb79a3e32014-03-11 12:20:17 -0700217 status_t drawShadow(const mat4& casterTransformXY, const mat4& casterTransformZ,
Chris Craik024433f2014-03-26 13:19:14 -0700218 float casterAlpha, bool casterUnclipped, const SkPath* casterPerimeter);
Chris Craikf57776b2013-10-25 18:30:17 -0700219
Romain Guy4aa90572010-09-26 18:40:37 -0700220 virtual void resetShader();
221 virtual void setupShader(SkiaShader* shader);
Romain Guyd27977d2010-07-14 19:18:51 -0700222
Romain Guy5ff9df62012-01-23 17:09:05 -0800223 virtual void resetPaintFilter();
224 virtual void setupPaintFilter(int clearBits, int setBits);
225
Chris Craik16ecda52013-03-29 10:59:59 -0700226 // If this value is set to < 1.0, it overrides alpha set on layer (see drawBitmap, drawLayer)
227 void setOverrideLayerAlpha(float alpha) { mDrawModifiers.mOverrideLayerAlpha = alpha; }
228
Chris Craikd218a922014-01-02 17:13:34 -0800229 const SkPaint* filterPaint(const SkPaint* paint);
Romain Guy5ff9df62012-01-23 17:09:05 -0800230
Chris Craik5e49b302013-07-30 19:05:20 -0700231 /**
232 * Store the current display state (most importantly, the current clip and transform), and
233 * additionally map the state's bounds from local to window coordinates.
234 *
235 * Returns true if quick-rejected
236 */
Chris Craikff785832013-03-08 13:12:16 -0800237 bool storeDisplayState(DeferredDisplayState& state, int stateDeferFlags);
Chris Craik527a3aa2013-03-04 10:19:31 -0800238 void restoreDisplayState(const DeferredDisplayState& state, bool skipClipRestore = false);
Chris Craik28ce94a2013-05-31 11:38:03 -0700239 void setupMergedMultiDraw(const Rect* clipRect);
Chris Craikc3566d02013-02-04 16:16:33 -0800240
Chris Craikd90144d2013-03-19 15:03:48 -0700241 const DrawModifiers& getDrawModifiers() { return mDrawModifiers; }
242 void setDrawModifiers(const DrawModifiers& drawModifiers) { mDrawModifiers = drawModifiers; }
243
Romain Guy672433d2013-01-04 19:05:13 -0800244 ANDROID_API bool isCurrentTransformSimple() {
Chris Craikd6b65f62014-01-01 14:45:21 -0800245 return currentTransform()->isSimple();
Romain Guy672433d2013-01-04 19:05:13 -0800246 }
247
Romain Guy0f6675332013-03-01 14:31:04 -0800248 Caches& getCaches() {
249 return mCaches;
250 }
251
Chris Craikff785832013-03-08 13:12:16 -0800252 // simple rect clip
253 bool isCurrentClipSimple() {
254 return mSnapshot->clipRegion->isEmpty();
255 }
256
Chris Craika64a2be2014-05-14 14:17:01 -0700257 int getViewportWidth() { return currentSnapshot()->getViewportWidth(); }
258 int getViewportHeight() { return currentSnapshot()->getViewportHeight(); }
Chris Craik0e87f002013-06-19 16:54:59 -0700259
Romain Guy17112ad2012-08-07 11:24:39 -0700260 /**
Chris Craika08f95c2013-03-15 17:24:33 -0700261 * Scales the alpha on the current snapshot. This alpha value will be modulated
Romain Guy17112ad2012-08-07 11:24:39 -0700262 * with other alpha values when drawing primitives.
263 */
Chris Craika08f95c2013-03-15 17:24:33 -0700264 void scaleAlpha(float alpha) {
265 mSnapshot->alpha *= alpha;
Romain Guy17112ad2012-08-07 11:24:39 -0700266 }
267
268 /**
Romain Guy0f6675332013-03-01 14:31:04 -0800269 * Inserts a named event marker in the stream of GL commands.
270 */
271 void eventMark(const char* name) const;
272
273 /**
Romain Guy17112ad2012-08-07 11:24:39 -0700274 * Inserts a named group marker in the stream of GL commands. This marker
275 * can be used by tools to group commands into logical groups. A call to
276 * this method must always be followed later on by a call to endMark().
277 */
Romain Guy13631f32012-01-30 17:41:55 -0800278 void startMark(const char* name) const;
Romain Guy17112ad2012-08-07 11:24:39 -0700279
280 /**
281 * Closes the last group marker opened by startMark().
282 */
Romain Guy13631f32012-01-30 17:41:55 -0800283 void endMark() const;
284
Chet Haased15ebf22012-09-05 11:40:29 -0700285 /**
286 * Gets the alpha and xfermode out of a paint object. If the paint is null
287 * alpha will be 255 and the xfermode will be SRC_OVER. This method does
Chris Craik16ecda52013-03-29 10:59:59 -0700288 * not multiply the paint's alpha by the current snapshot's alpha, and does
289 * not replace the alpha with the overrideLayerAlpha
Chet Haased15ebf22012-09-05 11:40:29 -0700290 *
291 * @param paint The paint to extract values from
292 * @param alpha Where to store the resulting alpha
293 * @param mode Where to store the resulting xfermode
294 */
Chris Craikd218a922014-01-02 17:13:34 -0800295 static inline void getAlphaAndModeDirect(const SkPaint* paint, int* alpha, SkXfermode::Mode* mode) {
Chris Craik527a3aa2013-03-04 10:19:31 -0800296 *mode = getXfermodeDirect(paint);
297 *alpha = getAlphaDirect(paint);
298 }
Chet Haased15ebf22012-09-05 11:40:29 -0700299
Chris Craikd218a922014-01-02 17:13:34 -0800300 static inline SkXfermode::Mode getXfermodeDirect(const SkPaint* paint) {
Chris Craik527a3aa2013-03-04 10:19:31 -0800301 if (!paint) return SkXfermode::kSrcOver_Mode;
302 return getXfermode(paint->getXfermode());
303 }
304
Chris Craikc1c5f082013-09-11 16:23:37 -0700305 static inline int getAlphaDirect(const SkPaint* paint) {
Chris Craik527a3aa2013-03-04 10:19:31 -0800306 if (!paint) return 255;
307 return paint->getAlpha();
Chet Haased15ebf22012-09-05 11:40:29 -0700308 }
309
Derek Sollenbergerc29a0a42014-03-31 13:52:39 -0400310 struct TextShadow {
311 SkScalar radius;
312 float dx;
313 float dy;
314 SkColor color;
315 };
316
317 static inline bool getTextShadow(const SkPaint* paint, TextShadow* textShadow) {
318 SkDrawLooper::BlurShadowRec blur;
319 if (paint && paint->getLooper() && paint->getLooper()->asABlurShadow(&blur)) {
320 if (textShadow) {
321 textShadow->radius = Blur::convertSigmaToRadius(blur.fSigma);
322 textShadow->dx = blur.fOffset.fX;
323 textShadow->dy = blur.fOffset.fY;
324 textShadow->color = blur.fColor;
325 }
326 return true;
327 }
328 return false;
329 }
330
331 static inline bool hasTextShadow(const SkPaint* paint) {
332 return getTextShadow(paint, NULL);
333 }
334
Romain Guy624234f2013-03-05 16:43:31 -0800335 /**
336 * Return the best transform to use to rasterize text given a full
337 * transform matrix.
338 */
339 mat4 findBestFontTransform(const mat4& transform) const;
340
Chris Craik527a3aa2013-03-04 10:19:31 -0800341#if DEBUG_MERGE_BEHAVIOR
342 void drawScreenSpaceColorRect(float left, float top, float right, float bottom, int color) {
343 mCaches.setScissorEnabled(false);
344
345 // should only be called outside of other draw ops, so stencil can only be in test state
346 bool stencilWasEnabled = mCaches.stencil.isTestEnabled();
347 mCaches.stencil.disable();
348
349 drawColorRect(left, top, right, bottom, color, SkXfermode::kSrcOver_Mode, true);
350
351 if (stencilWasEnabled) mCaches.stencil.enableTest();
352 }
353#endif
354
Romain Guye2d345e2010-09-24 18:39:22 -0700355protected:
356 /**
Romain Guy96885eb2013-03-26 15:05:58 -0700357 * Perform the setup specific to a frame. This method does not
358 * issue any OpenGL commands.
359 */
360 void setupFrameState(float left, float top, float right, float bottom, bool opaque);
361
362 /**
363 * Indicates the start of rendering. This method will setup the
364 * initial OpenGL state (viewport, clearing the buffer, etc.)
365 */
366 status_t startFrame();
367
368 /**
Romain Guy7c25aab2012-10-18 15:05:02 -0700369 * Clears the underlying surface if needed.
370 */
371 virtual status_t clear(float left, float top, float right, float bottom, bool opaque);
372
373 /**
Romain Guy35643dd2012-09-18 15:40:58 -0700374 * Call this method after updating a layer during a drawing pass.
375 */
376 void resumeAfterLayer();
377
378 /**
Romain Guy8ce00302013-01-15 18:51:42 -0800379 * This method is called whenever a stencil buffer is required. Subclasses
380 * should override this method and call attachStencilBufferToLayer() on the
381 * appropriate layer(s).
382 */
383 virtual void ensureStencilBuffer();
384
385 /**
386 * Obtains a stencil render buffer (allocating it if necessary) and
387 * attaches it to the specified layer.
388 */
389 void attachStencilBufferToLayer(Layer* layer);
390
Chris Craikf0a59072013-11-19 18:00:46 -0800391 bool quickRejectSetupScissor(float left, float top, float right, float bottom,
Chris Craikd218a922014-01-02 17:13:34 -0800392 const SkPaint* paint = NULL);
393 bool quickRejectSetupScissor(const Rect& bounds, const SkPaint* paint = NULL) {
Chris Craikf0a59072013-11-19 18:00:46 -0800394 return quickRejectSetupScissor(bounds.left, bounds.top,
395 bounds.right, bounds.bottom, paint);
396 }
397
Romain Guy8ce00302013-01-15 18:51:42 -0800398 /**
Romain Guye2d345e2010-09-24 18:39:22 -0700399 * Compose the layer defined in the current snapshot with the layer
400 * defined by the previous snapshot.
401 *
402 * The current snapshot *must* be a layer (flag kFlagIsLayer set.)
403 *
404 * @param curent The current snapshot containing the layer to compose
405 * @param previous The previous snapshot to compose the current layer with
406 */
Chris Craik14e51302013-12-30 15:32:54 -0800407 virtual void composeLayer(const Snapshot& current, const Snapshot& previous);
Romain Guy694b5192010-07-21 21:33:20 -0700408
Romain Guyada830f2011-01-13 12:13:20 -0800409 /**
Romain Guyf219da52011-01-16 12:54:25 -0800410 * Marks the specified region as dirty at the specified bounds.
Romain Guyada830f2011-01-13 12:13:20 -0800411 */
Romain Guyf219da52011-01-16 12:54:25 -0800412 void dirtyLayerUnchecked(Rect& bounds, Region* region);
Romain Guyada830f2011-01-13 12:13:20 -0800413
Romain Guy42f3a4b2011-01-19 13:42:26 -0800414 /**
415 * Returns the region of the current layer.
416 */
Romain Guy624234f2013-03-05 16:43:31 -0800417 virtual Region* getRegion() const {
Romain Guyf219da52011-01-16 12:54:25 -0800418 return mSnapshot->region;
419 }
420
Romain Guy42f3a4b2011-01-19 13:42:26 -0800421 /**
422 * Indicates whether rendering is currently targeted at a layer.
423 */
Romain Guy624234f2013-03-05 16:43:31 -0800424 virtual bool hasLayer() const {
Romain Guyf219da52011-01-16 12:54:25 -0800425 return (mSnapshot->flags & Snapshot::kFlagFboTarget) && mSnapshot->region;
426 }
Romain Guy1bd1bad2011-01-14 20:07:20 -0800427
Romain Guy42f3a4b2011-01-19 13:42:26 -0800428 /**
429 * Returns the name of the FBO this renderer is rendering into.
430 */
Chris Craik14e51302013-12-30 15:32:54 -0800431 virtual GLuint getTargetFbo() const {
Romain Guy42f3a4b2011-01-19 13:42:26 -0800432 return 0;
433 }
434
Romain Guy77a81162011-06-14 16:45:55 -0700435 /**
436 * Renders the specified layer as a textured quad.
437 *
438 * @param layer The layer to render
439 * @param rect The bounds of the layer
440 */
441 void drawTextureLayer(Layer* layer, const Rect& rect);
442
Romain Guybe6f9dc2012-07-16 12:41:17 -0700443 /**
444 * Gets the alpha and xfermode out of a paint object. If the paint is null
Chris Craik16ecda52013-03-29 10:59:59 -0700445 * alpha will be 255 and the xfermode will be SRC_OVER. Accounts for both
446 * snapshot alpha, and overrideLayerAlpha
Romain Guybe6f9dc2012-07-16 12:41:17 -0700447 *
448 * @param paint The paint to extract values from
449 * @param alpha Where to store the resulting alpha
450 * @param mode Where to store the resulting xfermode
451 */
Chris Craikd218a922014-01-02 17:13:34 -0800452 inline void getAlphaAndMode(const SkPaint* paint, int* alpha, SkXfermode::Mode* mode) const;
Chris Craik16ecda52013-03-29 10:59:59 -0700453
454 /**
455 * Gets the alpha from a layer, accounting for snapshot alpha and overrideLayerAlpha
456 *
457 * @param layer The layer from which the alpha is extracted
458 */
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -0500459 inline float getLayerAlpha(const Layer* layer) const;
Romain Guybe6f9dc2012-07-16 12:41:17 -0700460
461 /**
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -0500462 * Safely retrieves the ColorFilter from the given Paint. If the paint is
463 * null then null is returned.
Romain Guybe6f9dc2012-07-16 12:41:17 -0700464 */
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -0500465 static inline SkColorFilter* getColorFilter(const SkPaint* paint) {
466 return paint ? paint->getColorFilter() : NULL;
Romain Guybe6f9dc2012-07-16 12:41:17 -0700467 }
468
Romain Guy11cb6422012-09-21 00:39:43 -0700469 /**
470 * Set to true to suppress error checks at the end of a frame.
471 */
Romain Guy624234f2013-03-05 16:43:31 -0800472 virtual bool suppressErrorChecks() const {
Romain Guy11cb6422012-09-21 00:39:43 -0700473 return false;
474 }
475
Romain Guy85bf02f2010-06-22 13:11:24 -0700476private:
Romain Guy5cbbce52010-06-27 22:59:20 -0700477 /**
Romain Guydcfc8362013-01-03 13:08:57 -0800478 * Discards the content of the framebuffer if supported by the driver.
479 * This method should be called at the beginning of a frame to optimize
480 * rendering on some tiler architectures.
481 */
482 void discardFramebuffer(float left, float top, float right, float bottom);
483
484 /**
Romain Guyddf74372012-05-22 14:07:07 -0700485 * Ensures the state of the renderer is the same as the state of
486 * the GL context.
487 */
488 void syncState();
489
490 /**
Romain Guy2b7028e2012-09-19 17:25:38 -0700491 * Tells the GPU what part of the screen is about to be redrawn.
Chris Craikd6b65f62014-01-01 14:45:21 -0800492 * This method will use the current layer space clip rect.
Romain Guy2b7028e2012-09-19 17:25:38 -0700493 * This method needs to be invoked every time getTargetFbo() is
494 * bound again.
495 */
Chris Craikd6b65f62014-01-01 14:45:21 -0800496 void startTilingCurrentClip(bool opaque = false);
Romain Guy2b7028e2012-09-19 17:25:38 -0700497
498 /**
Romain Guyc3fedaf2013-01-29 17:26:25 -0800499 * Tells the GPU what part of the screen is about to be redrawn.
500 * This method needs to be invoked every time getTargetFbo() is
501 * bound again.
502 */
503 void startTiling(const Rect& clip, int windowHeight, bool opaque = false);
504
505 /**
Romain Guy2b7028e2012-09-19 17:25:38 -0700506 * Tells the GPU that we are done drawing the frame or that we
507 * are switching to another render target.
508 */
509 void endTiling();
510
Chris Craik14e51302013-12-30 15:32:54 -0800511 void onSnapshotRestored(const Snapshot& removed, const Snapshot& restored);
Romain Guybb9524b2010-06-22 18:56:38 -0700512
Romain Guy5cbbce52010-06-27 22:59:20 -0700513 /**
514 * Sets the clipping rectangle using glScissor. The clip is defined by
515 * the current snapshot's clipRect member.
516 */
Romain Guybb9524b2010-06-22 18:56:38 -0700517 void setScissorFromClip();
518
Romain Guy5cbbce52010-06-27 22:59:20 -0700519 /**
Romain Guy8ce00302013-01-15 18:51:42 -0800520 * Sets the clipping region using the stencil buffer. The clip region
521 * is defined by the current snapshot's clipRegion member.
522 */
523 void setStencilFromClip();
524
525 /**
Chris Craik408eb122013-03-26 18:55:15 -0700526 * Given the local bounds of the layer, calculates ...
Chris Craikd90144d2013-03-19 15:03:48 -0700527 */
528 void calculateLayerBoundsAndClip(Rect& bounds, Rect& clip, bool fboLayer);
529
530 /**
Chris Craik408eb122013-03-26 18:55:15 -0700531 * Given the local bounds + clip of the layer, updates current snapshot's empty/invisible
532 */
533 void updateSnapshotIgnoreForLayer(const Rect& bounds, const Rect& clip,
534 bool fboLayer, int alpha);
535
536 /**
Romain Guyd55a8612010-06-28 17:42:46 -0700537 * Creates a new layer stored in the specified snapshot.
538 *
539 * @param snapshot The snapshot associated with the new layer
540 * @param left The left coordinate of the layer
541 * @param top The top coordinate of the layer
542 * @param right The right coordinate of the layer
543 * @param bottom The bottom coordinate of the layer
544 * @param alpha The translucency of the layer
545 * @param mode The blending mode of the layer
546 * @param flags The layer save flags
Chris Craik3f0854292014-04-15 16:18:08 -0700547 * @param mask A mask to use when drawing the layer back, may be empty
Romain Guyd55a8612010-06-28 17:42:46 -0700548 *
549 * @return True if the layer was successfully created, false otherwise
550 */
Chet Haased48885a2012-08-28 17:43:28 -0700551 bool createLayer(float left, float top, float right, float bottom,
Chris Craik3f0854292014-04-15 16:18:08 -0700552 const SkPaint* paint, int flags, const SkPath* convexMask);
Romain Guyd55a8612010-06-28 17:42:46 -0700553
554 /**
Romain Guy5b3b3522010-10-27 18:57:51 -0700555 * Creates a new layer stored in the specified snapshot as an FBO.
556 *
557 * @param layer The layer to store as an FBO
558 * @param snapshot The snapshot associated with the new layer
559 * @param bounds The bounds of the layer
Romain Guy5b3b3522010-10-27 18:57:51 -0700560 */
Chris Craike63f7c622013-10-17 10:30:55 -0700561 bool createFboLayer(Layer* layer, Rect& bounds, Rect& clip);
Romain Guy5b3b3522010-10-27 18:57:51 -0700562
563 /**
564 * Compose the specified layer as a region.
565 *
566 * @param layer The layer to compose
567 * @param rect The layer's bounds
568 */
569 void composeLayerRegion(Layer* layer, const Rect& rect);
570
571 /**
572 * Compose the specified layer as a simple rectangle.
573 *
574 * @param layer The layer to compose
575 * @param rect The layer's bounds
576 * @param swap If true, the source and destination are swapped
577 */
578 void composeLayerRect(Layer* layer, const Rect& rect, bool swap = false);
579
Romain Guy54be1cd2011-06-13 19:04:27 -0700580 /**
581 * Clears all the regions corresponding to the current list of layers.
582 * This method MUST be invoked before any drawing operation.
583 */
584 void clearLayerRegions();
585
586 /**
Romain Guyf219da52011-01-16 12:54:25 -0800587 * Mark the layer as dirty at the specified coordinates. The coordinates
588 * are transformed with the supplied matrix.
589 */
590 void dirtyLayer(const float left, const float top,
591 const float right, const float bottom, const mat4 transform);
592
593 /**
594 * Mark the layer as dirty at the specified coordinates.
595 */
596 void dirtyLayer(const float left, const float top,
597 const float right, const float bottom);
598
599 /**
Romain Guy5cbbce52010-06-27 22:59:20 -0700600 * Draws a colored rectangle with the specified color. The specified coordinates
Romain Guy735738c2012-12-03 12:34:51 -0800601 * are transformed by the current snapshot's transform matrix unless specified
602 * otherwise.
Romain Guy5cbbce52010-06-27 22:59:20 -0700603 *
604 * @param left The left coordinate of the rectangle
605 * @param top The top coordinate of the rectangle
606 * @param right The right coordinate of the rectangle
607 * @param bottom The bottom coordinate of the rectangle
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -0500608 * @param paint The paint containing the color, blending mode, etc.
Romain Guy3d58c032010-07-14 16:34:53 -0700609 * @param ignoreTransform True if the current transform should be ignored
Romain Guy5cbbce52010-06-27 22:59:20 -0700610 */
Romain Guy026c5e162010-06-28 17:12:22 -0700611 void drawColorRect(float left, float top, float right, float bottom,
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -0500612 const SkPaint* paint, bool ignoreTransform = false);
Romain Guy5cbbce52010-06-27 22:59:20 -0700613
Romain Guy54be1cd2011-06-13 19:04:27 -0700614 /**
Romain Guy735738c2012-12-03 12:34:51 -0800615 * Draws a series of colored rectangles with the specified color. The specified
616 * coordinates are transformed by the current snapshot's transform matrix unless
617 * specified otherwise.
618 *
619 * @param rects A list of rectangles, 4 floats (left, top, right, bottom)
620 * per rectangle
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -0500621 * @param paint The paint containing the color, blending mode, etc.
Romain Guy735738c2012-12-03 12:34:51 -0800622 * @param ignoreTransform True if the current transform should be ignored
Romain Guy8ce00302013-01-15 18:51:42 -0800623 * @param dirty True if calling this method should dirty the current layer
Romain Guy3bbacf22013-02-06 16:51:04 -0800624 * @param clip True if the rects should be clipped, false otherwise
Romain Guy735738c2012-12-03 12:34:51 -0800625 */
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -0500626 status_t drawColorRects(const float* rects, int count, const SkPaint* paint,
627 bool ignoreTransform = false, bool dirty = true, bool clip = true);
Romain Guy735738c2012-12-03 12:34:51 -0800628
629 /**
Romain Guy54be1cd2011-06-13 19:04:27 -0700630 * Draws the shape represented by the specified path texture.
631 * This method invokes drawPathTexture() but takes into account
632 * the extra left/top offset and the texture offset to correctly
633 * position the final shape.
634 *
635 * @param left The left coordinate of the shape to render
636 * @param top The top coordinate of the shape to render
637 * @param texture The texture reprsenting the shape
638 * @param paint The paint to draw the shape with
639 */
Chris Craikd218a922014-01-02 17:13:34 -0800640 status_t drawShape(float left, float top, const PathTexture* texture, const SkPaint* paint);
Romain Guy54be1cd2011-06-13 19:04:27 -0700641
642 /**
Romain Guy54be1cd2011-06-13 19:04:27 -0700643 * Draws the specified texture as an alpha bitmap. Alpha bitmaps obey
644 * different compositing rules.
645 *
646 * @param texture The texture to draw with
647 * @param left The x coordinate of the bitmap
648 * @param top The y coordinate of the bitmap
649 * @param paint The paint to render with
650 */
Chris Craikd218a922014-01-02 17:13:34 -0800651 void drawAlphaBitmap(Texture* texture, float left, float top, const SkPaint* paint);
Romain Guya168d732011-03-18 16:50:13 -0700652
Romain Guy54be1cd2011-06-13 19:04:27 -0700653 /**
Chris Craik65cd6122012-12-10 17:56:27 -0800654 * Renders a strip of polygons with the specified paint, used for tessellated geometry.
655 *
656 * @param vertexBuffer The VertexBuffer to be drawn
657 * @param paint The paint to render with
658 * @param useOffset Offset the vertexBuffer (used in drawing non-AA lines)
659 */
ztenghui63d41ab2014-02-14 13:13:41 -0800660 status_t drawVertexBuffer(VertexBufferMode mode, const VertexBuffer& vertexBuffer,
661 const SkPaint* paint, bool useOffset = false);
Chris Craik65cd6122012-12-10 17:56:27 -0800662
663 /**
Chris Craik710f46d2012-09-17 17:25:49 -0700664 * Renders the convex hull defined by the specified path as a strip of polygons.
Romain Guy54be1cd2011-06-13 19:04:27 -0700665 *
Chris Craik710f46d2012-09-17 17:25:49 -0700666 * @param path The hull of the path to draw
Chris Craikcb4d6002012-09-25 12:00:29 -0700667 * @param paint The paint to render with
Romain Guy54be1cd2011-06-13 19:04:27 -0700668 */
Chris Craikd218a922014-01-02 17:13:34 -0800669 status_t drawConvexPath(const SkPath& path, const SkPaint* paint);
Chet Haase858aa932011-05-12 09:06:00 -0700670
Romain Guy5cbbce52010-06-27 22:59:20 -0700671 /**
672 * Draws a textured rectangle with the specified texture. The specified coordinates
673 * are transformed by the current snapshot's transform matrix.
674 *
675 * @param left The left coordinate of the rectangle
676 * @param top The top coordinate of the rectangle
677 * @param right The right coordinate of the rectangle
678 * @param bottom The bottom coordinate of the rectangle
Romain Guy82ba8142010-07-09 13:25:56 -0700679 * @param texture The texture to use
680 * @param paint The paint containing the alpha, blending mode, etc.
Romain Guy82ba8142010-07-09 13:25:56 -0700681 */
Romain Guya9794742010-07-13 11:37:54 -0700682 void drawTextureRect(float left, float top, float right, float bottom,
Chris Craikd218a922014-01-02 17:13:34 -0800683 Texture* texture, const SkPaint* paint);
Romain Guy82ba8142010-07-09 13:25:56 -0700684
685 /**
Romain Guy03750a02010-10-18 14:06:08 -0700686 * Draws a textured mesh with the specified texture. If the indices are omitted,
687 * the mesh is drawn as a simple quad. The mesh pointers become offsets when a
688 * VBO is bound.
Romain Guy82ba8142010-07-09 13:25:56 -0700689 *
690 * @param left The left coordinate of the rectangle
691 * @param top The top coordinate of the rectangle
692 * @param right The right coordinate of the rectangle
693 * @param bottom The bottom coordinate of the rectangle
694 * @param texture The texture name to map onto the rectangle
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -0500695 * @param paint The paint containing the alpha, blending mode, colorFilter, etc.
Romain Guy82ba8142010-07-09 13:25:56 -0700696 * @param blend True if the texture contains an alpha channel
Romain Guy82ba8142010-07-09 13:25:56 -0700697 * @param vertices The vertices that define the mesh
698 * @param texCoords The texture coordinates of each vertex
Romain Guy82ba8142010-07-09 13:25:56 -0700699 * @param elementsCount The number of elements in the mesh, required by indices
Romain Guyf607bdc2010-09-10 19:20:06 -0700700 * @param swapSrcDst Whether or not the src and dst blending operations should be swapped
701 * @param ignoreTransform True if the current transform should be ignored
Romain Guy03750a02010-10-18 14:06:08 -0700702 * @param vbo The VBO used to draw the mesh
Chris Craik4063a0e2013-11-15 16:06:56 -0800703 * @param modelViewMode Defines whether the model view matrix should be scaled
Romain Guy5b3b3522010-10-27 18:57:51 -0700704 * @param dirty True if calling this method should dirty the current layer
Romain Guyf7f93552010-07-08 19:17:03 -0700705 */
706 void drawTextureMesh(float left, float top, float right, float bottom, GLuint texture,
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -0500707 const SkPaint* paint, bool blend,
Romain Guy6820ac82010-09-15 18:11:50 -0700708 GLvoid* vertices, GLvoid* texCoords, GLenum drawMode, GLsizei elementsCount,
Romain Guy5b3b3522010-10-27 18:57:51 -0700709 bool swapSrcDst = false, bool ignoreTransform = false, GLuint vbo = 0,
Chris Craik4063a0e2013-11-15 16:06:56 -0800710 ModelViewMode modelViewMode = kModelViewMode_TranslateAndScale, bool dirty = true);
Romain Guyf7f93552010-07-08 19:17:03 -0700711
Romain Guy3b748a42013-04-17 18:54:38 -0700712 void drawIndexedTextureMesh(float left, float top, float right, float bottom, GLuint texture,
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -0500713 const SkPaint* paint, bool blend,
Romain Guy3b748a42013-04-17 18:54:38 -0700714 GLvoid* vertices, GLvoid* texCoords, GLenum drawMode, GLsizei elementsCount,
715 bool swapSrcDst = false, bool ignoreTransform = false, GLuint vbo = 0,
Chris Craik4063a0e2013-11-15 16:06:56 -0800716 ModelViewMode modelViewMode = kModelViewMode_TranslateAndScale, bool dirty = true);
Romain Guy3b748a42013-04-17 18:54:38 -0700717
Romain Guy886b2752013-01-04 12:26:18 -0800718 void drawAlpha8TextureMesh(float left, float top, float right, float bottom,
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -0500719 GLuint texture, const SkPaint* paint,
Romain Guy886b2752013-01-04 12:26:18 -0800720 GLvoid* vertices, GLvoid* texCoords, GLenum drawMode, GLsizei elementsCount,
Chris Craik4063a0e2013-11-15 16:06:56 -0800721 bool ignoreTransform, ModelViewMode modelViewMode = kModelViewMode_TranslateAndScale,
722 bool dirty = true);
Romain Guy886b2752013-01-04 12:26:18 -0800723
Romain Guyf7f93552010-07-08 19:17:03 -0700724 /**
Romain Guy448455f2013-07-22 13:57:50 -0700725 * Draws the specified list of vertices as quads using indexed GL_TRIANGLES.
726 * If the number of vertices to draw exceeds the number of indices we have
727 * pre-allocated, this method will generate several glDrawElements() calls.
728 */
Chris Craik4063a0e2013-11-15 16:06:56 -0800729 void issueIndexedQuadDraw(Vertex* mesh, GLsizei quadsCount);
Romain Guy448455f2013-07-22 13:57:50 -0700730
731 /**
Romain Guy0a417492010-08-16 20:26:20 -0700732 * Draws text underline and strike-through if needed.
733 *
734 * @param text The text to decor
735 * @param bytesCount The number of bytes in the text
Chris Craik41541822013-05-03 16:35:54 -0700736 * @param totalAdvance The total advance in pixels, defines underline/strikethrough length
Romain Guy0a417492010-08-16 20:26:20 -0700737 * @param x The x coordinate where the text will be drawn
738 * @param y The y coordinate where the text will be drawn
739 * @param paint The paint to draw the text with
740 */
Chris Craikd218a922014-01-02 17:13:34 -0800741 void drawTextDecorations(float totalAdvance, float x, float y, const SkPaint* paint);
Romain Guy1e45aae2010-08-13 19:39:53 -0700742
Raph Levien416a8472012-07-19 22:48:17 -0700743 /**
744 * Draws shadow layer on text (with optional positions).
745 *
746 * @param paint The paint to draw the shadow with
747 * @param text The text to draw
748 * @param bytesCount The number of bytes in the text
749 * @param count The number of glyphs in the text
750 * @param positions The x, y positions of individual glyphs (or NULL)
751 * @param fontRenderer The font renderer object
752 * @param alpha The alpha value for drawing the shadow
Raph Levien416a8472012-07-19 22:48:17 -0700753 * @param x The x coordinate where the shadow will be drawn
754 * @param y The y coordinate where the shadow will be drawn
755 */
Chris Craikd218a922014-01-02 17:13:34 -0800756 void drawTextShadow(const SkPaint* paint, const char* text, int bytesCount, int count,
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -0500757 const float* positions, FontRenderer& fontRenderer, int alpha,
Raph Levien416a8472012-07-19 22:48:17 -0700758 float x, float y);
759
Romain Guy54be1cd2011-06-13 19:04:27 -0700760 /**
761 * Draws a path texture. Path textures are alpha8 bitmaps that need special
762 * compositing to apply colors/filters/etc.
763 *
764 * @param texture The texture to render
765 * @param x The x coordinate where the texture will be drawn
766 * @param y The y coordinate where the texture will be drawn
767 * @param paint The paint to draw the texture with
768 */
Chris Craikd218a922014-01-02 17:13:34 -0800769 void drawPathTexture(const PathTexture* texture, float x, float y, const SkPaint* paint);
Romain Guy01d58e42011-01-19 21:54:02 -0800770
Romain Guy1e45aae2010-08-13 19:39:53 -0700771 /**
Romain Guyac670c02010-07-27 17:39:27 -0700772 * Resets the texture coordinates stored in mMeshVertices. Setting the values
Romain Guy026c5e162010-06-28 17:12:22 -0700773 * back to default is achieved by calling:
774 *
Romain Guy8ba548f2010-06-30 19:21:21 -0700775 * resetDrawTextureTexCoords(0.0f, 0.0f, 1.0f, 1.0f);
Romain Guy026c5e162010-06-28 17:12:22 -0700776 *
777 * @param u1 The left coordinate of the texture
778 * @param v1 The bottom coordinate of the texture
779 * @param u2 The right coordinate of the texture
780 * @param v2 The top coordinate of the texture
781 */
782 void resetDrawTextureTexCoords(float u1, float v1, float u2, float v2);
783
Romain Guy8ba548f2010-06-30 19:21:21 -0700784 /**
Romain Guy768bffc2013-02-27 13:50:45 -0800785 * Returns true if the specified paint will draw invisible text.
786 */
787 bool canSkipText(const SkPaint* paint) const;
788
789 /**
Romain Guy746b7402010-10-26 16:27:31 -0700790 * Binds the specified texture. The texture unit must have been selected
791 * prior to calling this method.
Romain Guya1db5742010-07-20 13:09:13 -0700792 */
Romain Guy746b7402010-10-26 16:27:31 -0700793 inline void bindTexture(GLuint texture) {
Romain Guy8aa195d2013-06-04 18:00:09 -0700794 mCaches.bindTexture(texture);
Romain Guy746b7402010-10-26 16:27:31 -0700795 }
796
797 /**
Romain Guyaa6c24c2011-04-28 18:40:04 -0700798 * Binds the specified EGLImage texture. The texture unit must have been selected
799 * prior to calling this method.
800 */
801 inline void bindExternalTexture(GLuint texture) {
Romain Guy8aa195d2013-06-04 18:00:09 -0700802 mCaches.bindTexture(GL_TEXTURE_EXTERNAL_OES, texture);
Romain Guyaa6c24c2011-04-28 18:40:04 -0700803 }
804
805 /**
Romain Guy82ba8142010-07-09 13:25:56 -0700806 * Enable or disable blending as necessary. This function sets the appropriate
807 * blend function based on the specified xfermode.
808 */
Romain Guyf607bdc2010-09-10 19:20:06 -0700809 inline void chooseBlending(bool blend, SkXfermode::Mode mode, ProgramDescription& description,
810 bool swapSrcDst = false);
Romain Guya5aed0d2010-09-09 14:42:43 -0700811
Romain Guyf607bdc2010-09-10 19:20:06 -0700812 /**
Romain Guyd27977d2010-07-14 19:18:51 -0700813 * Use the specified program with the current GL context. If the program is already
814 * in use, it will not be bound again. If it is not in use, the current program is
815 * marked unused and the specified program becomes used and becomes the new
816 * current program.
Romain Guy6926c722010-07-12 20:20:03 -0700817 *
Romain Guyd27977d2010-07-14 19:18:51 -0700818 * @param program The program to use
819 *
820 * @return true If the specified program was already in use, false otherwise.
Romain Guy260e1022010-07-12 14:41:06 -0700821 */
Romain Guy889f8d12010-07-29 14:37:42 -0700822 inline bool useProgram(Program* program);
Romain Guy260e1022010-07-12 14:41:06 -0700823
Romain Guy746b7402010-10-26 16:27:31 -0700824 /**
825 * Invoked before any drawing operation. This sets required state.
826 */
Romain Guy54be1cd2011-06-13 19:04:27 -0700827 void setupDraw(bool clear = true);
Romain Guy17112ad2012-08-07 11:24:39 -0700828
Romain Guy70ca14e2010-12-13 18:24:33 -0800829 /**
830 * Various methods to setup OpenGL rendering.
831 */
832 void setupDrawWithTexture(bool isAlpha8 = false);
Romain Guyff316ec2013-02-13 18:39:43 -0800833 void setupDrawWithTextureAndColor(bool isAlpha8 = false);
Romain Guyaa6c24c2011-04-28 18:40:04 -0700834 void setupDrawWithExternalTexture();
Romain Guy15bc6432011-12-13 13:11:32 -0800835 void setupDrawNoTexture();
Chris Craik710f46d2012-09-17 17:25:49 -0700836 void setupDrawAA();
Romain Guy8d0d4782010-12-14 20:13:35 -0800837 void setupDrawColor(int color, int alpha);
Romain Guy70ca14e2010-12-13 18:24:33 -0800838 void setupDrawColor(float r, float g, float b, float a);
Romain Guy86568192010-12-14 15:55:39 -0800839 void setupDrawAlpha8Color(int color, int alpha);
Romain Guy41210632012-07-16 17:04:24 -0700840 void setupDrawTextGamma(const SkPaint* paint);
Romain Guy70ca14e2010-12-13 18:24:33 -0800841 void setupDrawShader();
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -0500842 void setupDrawColorFilter(const SkColorFilter* filter);
843 void setupDrawBlending(const Layer* layer, bool swapSrcDst = false);
844 void setupDrawBlending(const SkPaint* paint, bool blend = true, bool swapSrcDst = false);
Romain Guy70ca14e2010-12-13 18:24:33 -0800845 void setupDrawProgram();
846 void setupDrawDirtyRegionsDisabled();
Chris Craik4063a0e2013-11-15 16:06:56 -0800847
848 /**
849 * Setup the current program matrices based upon the nature of the geometry.
850 *
851 * @param mode If kModelViewMode_Translate, the geometry must be translated by the left and top
852 * parameters. If kModelViewMode_TranslateAndScale, the geometry that exists in the (0,0, 1,1)
853 * space must be scaled up and translated to fill the quad provided in (l,t,r,b). These
854 * transformations are stored in the modelView matrix and uploaded to the shader.
855 *
856 * @param offset Set to true if the the matrix should be fudged (translated) slightly to disambiguate
Chris Craik564acf72014-01-02 16:46:18 -0800857 * geometry pixel positioning. See Vertex::GeometryFudgeFactor().
Chris Craik4063a0e2013-11-15 16:06:56 -0800858 *
859 * @param ignoreTransform Set to true if l,t,r,b coordinates already in layer space,
860 * currentTransform() will be ignored. (e.g. when drawing clip in layer coordinates to stencil,
861 * or when simple translation has been extracted)
862 */
863 void setupDrawModelView(ModelViewMode mode, bool offset,
864 float left, float top, float right, float bottom, bool ignoreTransform = false);
Romain Guy70ca14e2010-12-13 18:24:33 -0800865 void setupDrawColorUniforms();
Romain Guy86568192010-12-14 15:55:39 -0800866 void setupDrawPureColorUniforms();
Romain Guy70ca14e2010-12-13 18:24:33 -0800867 void setupDrawShaderUniforms(bool ignoreTransform = false);
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -0500868 void setupDrawColorFilterUniforms(const SkColorFilter* paint);
Romain Guy70ca14e2010-12-13 18:24:33 -0800869 void setupDrawSimpleMesh();
870 void setupDrawTexture(GLuint texture);
Romain Guyaa6c24c2011-04-28 18:40:04 -0700871 void setupDrawExternalTexture(GLuint texture);
Romain Guy8f0095c2011-05-02 17:24:22 -0700872 void setupDrawTextureTransform();
873 void setupDrawTextureTransformUniforms(mat4& transform);
Romain Guy41210632012-07-16 17:04:24 -0700874 void setupDrawTextGammaUniforms();
Chris Craik564acf72014-01-02 16:46:18 -0800875 void setupDrawMesh(const GLvoid* vertices, const GLvoid* texCoords = NULL, GLuint vbo = 0);
876 void setupDrawMesh(const GLvoid* vertices, const GLvoid* texCoords, const GLvoid* colors);
877 void setupDrawMeshIndices(const GLvoid* vertices, const GLvoid* texCoords, GLuint vbo = 0);
Romain Guy448455f2013-07-22 13:57:50 -0700878 void setupDrawIndexedVertices(GLvoid* vertices);
Romain Guyf09ef512011-05-27 11:43:46 -0700879 void accountForClear(SkXfermode::Mode mode);
Romain Guy746b7402010-10-26 16:27:31 -0700880
Romain Guy11cb6422012-09-21 00:39:43 -0700881 bool updateLayer(Layer* layer, bool inFrame);
882 void updateLayers();
Romain Guy96885eb2013-03-26 15:05:58 -0700883 void flushLayers();
Romain Guy11cb6422012-09-21 00:39:43 -0700884
Chris Craike63f7c622013-10-17 10:30:55 -0700885#if DEBUG_LAYERS_AS_REGIONS
Romain Guy17112ad2012-08-07 11:24:39 -0700886 /**
887 * Renders the specified region as a series of rectangles. This method
888 * is used for debugging only.
889 */
Chris Craike63f7c622013-10-17 10:30:55 -0700890 void drawRegionRectsDebug(const Region& region);
891#endif
Romain Guy3a3133d2011-02-01 22:59:58 -0800892
Romain Guy8ce00302013-01-15 18:51:42 -0800893 /**
894 * Renders the specified region as a series of rectangles. The region
895 * must be in screen-space coordinates.
896 */
Derek Sollenberger76d3a1b2013-12-10 12:28:58 -0500897 void drawRegionRects(const SkRegion& region, const SkPaint& paint, bool dirty = false);
Romain Guy8ce00302013-01-15 18:51:42 -0800898
899 /**
900 * Draws the current clip region if any. Only when DEBUG_CLIP_REGIONS
901 * is turned on.
902 */
903 void debugClip();
904
Romain Guy7c450aa2012-09-21 19:15:00 -0700905 void debugOverdraw(bool enable, bool clear);
906 void renderOverdraw();
Romain Guy78dd96d2013-05-03 14:24:16 -0700907 void countOverdraw();
Romain Guy7c450aa2012-09-21 19:15:00 -0700908
Romain Guy746b7402010-10-26 16:27:31 -0700909 /**
910 * Should be invoked every time the glScissor is modified.
911 */
912 inline void dirtyClip() {
913 mDirtyClip = true;
914 }
915
Romain Guy3b748a42013-04-17 18:54:38 -0700916 inline const UvMapper& getMapper(const Texture* texture) {
917 return texture && texture->uvMapper ? *texture->uvMapper : mUvMapper;
918 }
919
920 /**
921 * Returns a texture object for the specified bitmap. The texture can
922 * come from the texture cache or an atlas. If this method returns
923 * NULL, the texture could not be found and/or allocated.
924 */
Chris Craikd218a922014-01-02 17:13:34 -0800925 Texture* getTexture(const SkBitmap* bitmap);
Romain Guy3b748a42013-04-17 18:54:38 -0700926
Chris Craik4063a0e2013-11-15 16:06:56 -0800927 /**
928 * Model-view matrix used to position/size objects
929 *
930 * Stores operation-local modifications to the draw matrix that aren't incorporated into the
931 * currentTransform().
932 *
Chris Craike10e8272014-05-08 14:28:26 -0700933 * If generated with kModelViewMode_Translate, mModelViewMatrix will reflect an x/y offset,
Chris Craik4063a0e2013-11-15 16:06:56 -0800934 * e.g. the offset in drawLayer(). If generated with kModelViewMode_TranslateAndScale,
Chris Craike10e8272014-05-08 14:28:26 -0700935 * mModelViewMatrix will reflect a translation and scale, e.g. the translation and scale
936 * required to make VBO 0 (a rect of (0,0,1,1)) scaled to match the x,y offset, and width/height
937 * of a bitmap.
Chris Craik4063a0e2013-11-15 16:06:56 -0800938 *
939 * Used as input to SkiaShader transformation.
940 */
Chris Craike10e8272014-05-08 14:28:26 -0700941 mat4 mModelViewMatrix;
Romain Guyc7d53492010-06-25 13:41:57 -0700942
Romain Guy2b7028e2012-09-19 17:25:38 -0700943 // State used to define the clipping region
Chris Craik5f803622013-03-21 14:39:04 -0700944 Rect mTilingClip;
Romain Guy96885eb2013-03-26 15:05:58 -0700945 // Is the target render surface opaque
946 bool mOpaque;
947 // Is a frame currently being rendered
948 bool mFrameStarted;
Romain Guy9d5316e2010-06-24 19:30:36 -0700949
Romain Guy026c5e162010-06-28 17:12:22 -0700950 // Used to draw textured quads
Romain Guyac670c02010-07-27 17:39:27 -0700951 TextureVertex mMeshVertices[4];
Romain Guyce0537b2010-06-29 21:05:21 -0700952
Romain Guy3b748a42013-04-17 18:54:38 -0700953 // Default UV mapper
954 const UvMapper mUvMapper;
955
Chris Craikc3566d02013-02-04 16:16:33 -0800956 // shader, filters, and shadow
957 DrawModifiers mDrawModifiers;
Romain Guy5ff9df62012-01-23 17:09:05 -0800958 SkPaint mFilteredPaint;
959
Romain Guy82ba8142010-07-09 13:25:56 -0700960 // Various caches
Romain Guyfb8b7632010-08-23 21:05:08 -0700961 Caches& mCaches;
Romain Guy3bbacf22013-02-06 16:51:04 -0800962 Extensions& mExtensions;
Romain Guy86942302010-09-12 13:02:16 -0700963
Romain Guy8f3b8e32012-03-27 16:33:45 -0700964 // List of rectangles to clear after saveLayer() is invoked
Romain Guy54be1cd2011-06-13 19:04:27 -0700965 Vector<Rect*> mLayers;
Romain Guy11cb6422012-09-21 00:39:43 -0700966 // List of layers to update at the beginning of a frame
967 Vector<Layer*> mLayerUpdates;
Romain Guy54be1cd2011-06-13 19:04:27 -0700968
Romain Guy70ca14e2010-12-13 18:24:33 -0800969 // The following fields are used to setup drawing
970 // Used to describe the shaders to generate
971 ProgramDescription mDescription;
972 // Color description
973 bool mColorSet;
974 float mColorA, mColorR, mColorG, mColorB;
975 // Indicates that the shader should get a color
976 bool mSetShaderColor;
977 // Current texture unit
978 GLuint mTextureUnit;
979 // Track dirty regions, true by default
980 bool mTrackDirtyRegions;
Romain Guy2b7028e2012-09-19 17:25:38 -0700981 // Indicate whether we are drawing an opaque frame
982 bool mOpaqueFrame;
Romain Guy70ca14e2010-12-13 18:24:33 -0800983
Romain Guy87e2f7572012-09-24 11:37:12 -0700984 // See PROPERTY_DISABLE_SCISSOR_OPTIMIZATION in
985 // Properties.h
986 bool mScissorOptimizationDisabled;
987
Romain Guy54c1a642012-09-27 17:55:46 -0700988 // No-ops start/endTiling when set
989 bool mSuppressTiling;
990
Romain Guy78dd96d2013-05-03 14:24:16 -0700991 // If true, this renderer will setup drawing to emulate
992 // an increment stencil buffer in the color buffer
993 bool mCountOverdraw;
994 float mOverdraw;
995
Romain Guyb051e892010-09-28 19:09:36 -0700996 friend class DisplayListRenderer;
Romain Guy96885eb2013-03-26 15:05:58 -0700997 friend class Layer;
Romain Guy257ae352013-03-20 16:31:12 -0700998 friend class TextSetupFunctor;
Romain Guy03c00b52013-06-20 18:30:28 -0700999 friend class DrawBitmapOp;
1000 friend class DrawPatchOp;
Romain Guyb051e892010-09-28 19:09:36 -07001001
Romain Guybb9524b2010-06-22 18:56:38 -07001002}; // class OpenGLRenderer
Romain Guye4d01122010-06-16 18:44:05 -07001003
Romain Guy9d5316e2010-06-24 19:30:36 -07001004}; // namespace uirenderer
Romain Guye4d01122010-06-16 18:44:05 -07001005}; // namespace android
1006
Romain Guy5b3b3522010-10-27 18:57:51 -07001007#endif // ANDROID_HWUI_OPENGL_RENDERER_H