jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "GrDistanceFieldTextContext.h" |
| 9 | #include "GrAtlas.h" |
jvanverth | 8c27a18 | 2014-10-14 08:45:50 -0700 | [diff] [blame] | 10 | #include "GrBitmapTextContext.h" |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 11 | #include "GrDrawTarget.h" |
commit-bot@chromium.org | 6c89c34 | 2014-02-14 21:48:29 +0000 | [diff] [blame] | 12 | #include "GrDrawTargetCaps.h" |
jvanverth | 787cdf9 | 2014-12-04 10:46:50 -0800 | [diff] [blame] | 13 | #include "GrFontCache.h" |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 14 | #include "GrFontScaler.h" |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 15 | #include "GrGpu.h" |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 16 | #include "GrIndexBuffer.h" |
egdaniel | d58a0ba | 2014-06-11 10:30:05 -0700 | [diff] [blame] | 17 | #include "GrStrokeInfo.h" |
bsalomon | afbf2d6 | 2014-09-30 12:18:44 -0700 | [diff] [blame] | 18 | #include "GrTexturePriv.h" |
bsalomon | afbf2d6 | 2014-09-30 12:18:44 -0700 | [diff] [blame] | 19 | |
jvanverth | 2b9dc1d | 2014-10-20 06:48:59 -0700 | [diff] [blame] | 20 | #include "SkAutoKern.h" |
bsalomon | afbf2d6 | 2014-09-30 12:18:44 -0700 | [diff] [blame] | 21 | #include "SkColorFilter.h" |
commit-bot@chromium.org | 64b08a1 | 2014-04-15 17:53:21 +0000 | [diff] [blame] | 22 | #include "SkDistanceFieldGen.h" |
commit-bot@chromium.org | 9f94b91 | 2014-01-30 15:22:54 +0000 | [diff] [blame] | 23 | #include "SkDraw.h" |
bsalomon | afbf2d6 | 2014-09-30 12:18:44 -0700 | [diff] [blame] | 24 | #include "SkGlyphCache.h" |
commit-bot@chromium.org | e8612d9 | 2014-01-28 22:02:07 +0000 | [diff] [blame] | 25 | #include "SkGpuDevice.h" |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 26 | #include "SkPath.h" |
| 27 | #include "SkRTConf.h" |
| 28 | #include "SkStrokeRec.h" |
| 29 | #include "effects/GrDistanceFieldTextureEffect.h" |
| 30 | |
jvanverth | feceba5 | 2014-07-25 19:03:34 -0700 | [diff] [blame] | 31 | SK_CONF_DECLARE(bool, c_DumpFontCache, "gpu.dumpFontCache", false, |
| 32 | "Dump the contents of the font cache before every purge."); |
| 33 | |
commit-bot@chromium.org | dc5cd85 | 2014-04-02 19:24:32 +0000 | [diff] [blame] | 34 | static const int kSmallDFFontSize = 32; |
| 35 | static const int kSmallDFFontLimit = 32; |
jvanverth | 5a3d92f | 2015-01-28 13:08:40 -0800 | [diff] [blame] | 36 | static const int kMediumDFFontSize = 78; |
| 37 | static const int kMediumDFFontLimit = 78; |
| 38 | static const int kLargeDFFontSize = 192; |
commit-bot@chromium.org | 8128d8c | 2013-12-19 16:12:25 +0000 | [diff] [blame] | 39 | |
jvanverth | 73f1053 | 2014-10-23 11:57:12 -0700 | [diff] [blame] | 40 | static const int kVerticesPerGlyph = 4; |
| 41 | static const int kIndicesPerGlyph = 6; |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 42 | |
skia.committer@gmail.com | e5d7015 | 2014-01-29 07:01:48 +0000 | [diff] [blame] | 43 | GrDistanceFieldTextContext::GrDistanceFieldTextContext(GrContext* context, |
commit-bot@chromium.org | 6fcd1ef | 2014-05-02 12:39:41 +0000 | [diff] [blame] | 44 | const SkDeviceProperties& properties, |
| 45 | bool enable) |
Mike Klein | 6a25bd0 | 2014-08-29 10:03:59 -0400 | [diff] [blame] | 46 | : GrTextContext(context, properties) { |
jvanverth | 4736e14 | 2014-11-07 07:12:46 -0800 | [diff] [blame] | 47 | #if SK_FORCE_DISTANCE_FIELD_TEXT |
Mike Klein | 6a25bd0 | 2014-08-29 10:03:59 -0400 | [diff] [blame] | 48 | fEnableDFRendering = true; |
commit-bot@chromium.org | 6fcd1ef | 2014-05-02 12:39:41 +0000 | [diff] [blame] | 49 | #else |
Mike Klein | 6a25bd0 | 2014-08-29 10:03:59 -0400 | [diff] [blame] | 50 | fEnableDFRendering = enable; |
commit-bot@chromium.org | 6fcd1ef | 2014-05-02 12:39:41 +0000 | [diff] [blame] | 51 | #endif |
Mike Klein | 6a25bd0 | 2014-08-29 10:03:59 -0400 | [diff] [blame] | 52 | fStrike = NULL; |
| 53 | fGammaTexture = NULL; |
| 54 | |
Mike Klein | 6a25bd0 | 2014-08-29 10:03:59 -0400 | [diff] [blame] | 55 | fEffectTextureUniqueID = SK_InvalidUniqueID; |
| 56 | fEffectColor = GrColor_ILLEGAL; |
jvanverth | 6d22eca | 2014-10-28 11:10:48 -0700 | [diff] [blame] | 57 | fEffectFlags = kInvalid_DistanceFieldEffectFlag; |
Mike Klein | 6a25bd0 | 2014-08-29 10:03:59 -0400 | [diff] [blame] | 58 | |
| 59 | fVertices = NULL; |
jvanverth | 73f1053 | 2014-10-23 11:57:12 -0700 | [diff] [blame] | 60 | fCurrVertex = 0; |
| 61 | fAllocVertexCount = 0; |
| 62 | fTotalVertexCount = 0; |
| 63 | fCurrTexture = NULL; |
Mike Klein | 6a25bd0 | 2014-08-29 10:03:59 -0400 | [diff] [blame] | 64 | |
jvanverth | 1723bfc | 2014-07-30 09:16:33 -0700 | [diff] [blame] | 65 | fVertexBounds.setLargestInverted(); |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 66 | } |
| 67 | |
jvanverth | 8c27a18 | 2014-10-14 08:45:50 -0700 | [diff] [blame] | 68 | GrDistanceFieldTextContext* GrDistanceFieldTextContext::Create(GrContext* context, |
| 69 | const SkDeviceProperties& props, |
| 70 | bool enable) { |
| 71 | GrDistanceFieldTextContext* textContext = SkNEW_ARGS(GrDistanceFieldTextContext, |
| 72 | (context, props, enable)); |
| 73 | textContext->fFallbackTextContext = GrBitmapTextContext::Create(context, props); |
| 74 | |
| 75 | return textContext; |
| 76 | } |
| 77 | |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 78 | GrDistanceFieldTextContext::~GrDistanceFieldTextContext() { |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 79 | SkSafeSetNull(fGammaTexture); |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 80 | } |
| 81 | |
joshualitt | 5531d51 | 2014-12-17 15:50:11 -0800 | [diff] [blame] | 82 | bool GrDistanceFieldTextContext::canDraw(const SkPaint& paint, const SkMatrix& viewMatrix) { |
jvanverth | 5a3d92f | 2015-01-28 13:08:40 -0800 | [diff] [blame] | 83 | // TODO: support perspective (need getMaxScale replacement) |
| 84 | if (viewMatrix.hasPerspective()) { |
| 85 | return false; |
| 86 | } |
| 87 | |
| 88 | SkScalar maxScale = viewMatrix.getMaxScale(); |
| 89 | SkScalar scaledTextSize = maxScale*paint.getTextSize(); |
| 90 | // Scaling up beyond 2x yields undesireable artifacts |
| 91 | if (scaledTextSize > 2*kLargeDFFontSize) { |
| 92 | return false; |
| 93 | } |
| 94 | |
| 95 | if (!fEnableDFRendering && !paint.isDistanceFieldTextTEMP() && |
| 96 | scaledTextSize < kLargeDFFontSize) { |
commit-bot@chromium.org | eefd8a0 | 2014-04-08 20:14:32 +0000 | [diff] [blame] | 97 | return false; |
| 98 | } |
| 99 | |
skia.committer@gmail.com | e1d9443 | 2014-04-09 03:04:11 +0000 | [diff] [blame] | 100 | // rasterizers and mask filters modify alpha, which doesn't |
commit-bot@chromium.org | eefd8a0 | 2014-04-08 20:14:32 +0000 | [diff] [blame] | 101 | // translate well to distance |
| 102 | if (paint.getRasterizer() || paint.getMaskFilter() || |
| 103 | !fContext->getTextTarget()->caps()->shaderDerivativeSupport()) { |
| 104 | return false; |
| 105 | } |
| 106 | |
| 107 | // TODO: add some stroking support |
| 108 | if (paint.getStyle() != SkPaint::kFill_Style) { |
| 109 | return false; |
| 110 | } |
| 111 | |
jvanverth | 2faa228 | 2014-10-31 12:59:57 -0700 | [diff] [blame] | 112 | return true; |
commit-bot@chromium.org | cbbc481 | 2014-01-30 22:05:47 +0000 | [diff] [blame] | 113 | } |
| 114 | |
joshualitt | 25d9c15 | 2015-02-18 12:29:52 -0800 | [diff] [blame^] | 115 | inline void GrDistanceFieldTextContext::init(GrRenderTarget* rt, const GrPaint& paint, |
| 116 | const SkPaint& skPaint) { |
| 117 | GrTextContext::init(rt, paint, skPaint); |
commit-bot@chromium.org | cbbc481 | 2014-01-30 22:05:47 +0000 | [diff] [blame] | 118 | |
| 119 | fStrike = NULL; |
| 120 | |
joshualitt | 5531d51 | 2014-12-17 15:50:11 -0800 | [diff] [blame] | 121 | const SkMatrix& ctm = fViewMatrix; |
jvanverth | 9564ce6 | 2014-09-16 05:45:19 -0700 | [diff] [blame] | 122 | |
| 123 | // getMaxScale doesn't support perspective, so neither do we at the moment |
jvanverth | 76ce81e | 2014-09-22 14:26:53 -0700 | [diff] [blame] | 124 | SkASSERT(!ctm.hasPerspective()); |
| 125 | SkScalar maxScale = ctm.getMaxScale(); |
jvanverth | 9564ce6 | 2014-09-16 05:45:19 -0700 | [diff] [blame] | 126 | SkScalar textSize = fSkPaint.getTextSize(); |
jvanverth | 76ce81e | 2014-09-22 14:26:53 -0700 | [diff] [blame] | 127 | SkScalar scaledTextSize = textSize; |
| 128 | // if we have non-unity scale, we need to choose our base text size |
| 129 | // based on the SkPaint's text size multiplied by the max scale factor |
jvanverth | 9564ce6 | 2014-09-16 05:45:19 -0700 | [diff] [blame] | 130 | // TODO: do we need to do this if we're scaling down (i.e. maxScale < 1)? |
| 131 | if (maxScale > 0 && !SkScalarNearlyEqual(maxScale, SK_Scalar1)) { |
jvanverth | 76ce81e | 2014-09-22 14:26:53 -0700 | [diff] [blame] | 132 | scaledTextSize *= maxScale; |
jvanverth | 9564ce6 | 2014-09-16 05:45:19 -0700 | [diff] [blame] | 133 | } |
| 134 | |
commit-bot@chromium.org | cbbc481 | 2014-01-30 22:05:47 +0000 | [diff] [blame] | 135 | fVertices = NULL; |
jvanverth | 73f1053 | 2014-10-23 11:57:12 -0700 | [diff] [blame] | 136 | fCurrVertex = 0; |
| 137 | fAllocVertexCount = 0; |
| 138 | fTotalVertexCount = 0; |
commit-bot@chromium.org | cbbc481 | 2014-01-30 22:05:47 +0000 | [diff] [blame] | 139 | |
jvanverth | 76ce81e | 2014-09-22 14:26:53 -0700 | [diff] [blame] | 140 | if (scaledTextSize <= kSmallDFFontLimit) { |
jvanverth | 9564ce6 | 2014-09-16 05:45:19 -0700 | [diff] [blame] | 141 | fTextRatio = textSize / kSmallDFFontSize; |
commit-bot@chromium.org | dc5cd85 | 2014-04-02 19:24:32 +0000 | [diff] [blame] | 142 | fSkPaint.setTextSize(SkIntToScalar(kSmallDFFontSize)); |
jvanverth | ada68ef | 2014-11-03 14:00:24 -0800 | [diff] [blame] | 143 | #if DEBUG_TEXT_SIZE |
| 144 | fSkPaint.setColor(SkColorSetARGB(0xFF, 0x00, 0x00, 0xFF)); |
| 145 | fPaint.setColor(GrColorPackRGBA(0x00, 0x00, 0xFF, 0xFF)); |
| 146 | #endif |
jvanverth | 76ce81e | 2014-09-22 14:26:53 -0700 | [diff] [blame] | 147 | } else if (scaledTextSize <= kMediumDFFontLimit) { |
jvanverth | 9564ce6 | 2014-09-16 05:45:19 -0700 | [diff] [blame] | 148 | fTextRatio = textSize / kMediumDFFontSize; |
commit-bot@chromium.org | dc5cd85 | 2014-04-02 19:24:32 +0000 | [diff] [blame] | 149 | fSkPaint.setTextSize(SkIntToScalar(kMediumDFFontSize)); |
jvanverth | ada68ef | 2014-11-03 14:00:24 -0800 | [diff] [blame] | 150 | #if DEBUG_TEXT_SIZE |
| 151 | fSkPaint.setColor(SkColorSetARGB(0xFF, 0x00, 0xFF, 0x00)); |
| 152 | fPaint.setColor(GrColorPackRGBA(0x00, 0xFF, 0x00, 0xFF)); |
| 153 | #endif |
commit-bot@chromium.org | dc5cd85 | 2014-04-02 19:24:32 +0000 | [diff] [blame] | 154 | } else { |
jvanverth | 9564ce6 | 2014-09-16 05:45:19 -0700 | [diff] [blame] | 155 | fTextRatio = textSize / kLargeDFFontSize; |
commit-bot@chromium.org | dc5cd85 | 2014-04-02 19:24:32 +0000 | [diff] [blame] | 156 | fSkPaint.setTextSize(SkIntToScalar(kLargeDFFontSize)); |
jvanverth | ada68ef | 2014-11-03 14:00:24 -0800 | [diff] [blame] | 157 | #if DEBUG_TEXT_SIZE |
| 158 | fSkPaint.setColor(SkColorSetARGB(0xFF, 0xFF, 0x00, 0x00)); |
| 159 | fPaint.setColor(GrColorPackRGBA(0xFF, 0x00, 0x00, 0xFF)); |
| 160 | #endif |
commit-bot@chromium.org | dc5cd85 | 2014-04-02 19:24:32 +0000 | [diff] [blame] | 161 | } |
skia.committer@gmail.com | 4c18e9f | 2014-01-31 03:01:59 +0000 | [diff] [blame] | 162 | |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 163 | fUseLCDText = fSkPaint.isLCDRenderText(); |
skia.committer@gmail.com | 221b911 | 2014-04-04 03:04:32 +0000 | [diff] [blame] | 164 | |
commit-bot@chromium.org | cbbc481 | 2014-01-30 22:05:47 +0000 | [diff] [blame] | 165 | fSkPaint.setLCDRenderText(false); |
| 166 | fSkPaint.setAutohinted(false); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 167 | fSkPaint.setHinting(SkPaint::kNormal_Hinting); |
commit-bot@chromium.org | 0bed43c | 2014-03-14 21:22:38 +0000 | [diff] [blame] | 168 | fSkPaint.setSubpixelText(true); |
commit-bot@chromium.org | cbbc481 | 2014-01-30 22:05:47 +0000 | [diff] [blame] | 169 | } |
| 170 | |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 171 | static void setup_gamma_texture(GrContext* context, const SkGlyphCache* cache, |
| 172 | const SkDeviceProperties& deviceProperties, |
| 173 | GrTexture** gammaTexture) { |
| 174 | if (NULL == *gammaTexture) { |
| 175 | int width, height; |
| 176 | size_t size; |
| 177 | |
| 178 | #ifdef SK_GAMMA_CONTRAST |
| 179 | SkScalar contrast = SK_GAMMA_CONTRAST; |
| 180 | #else |
| 181 | SkScalar contrast = 0.5f; |
| 182 | #endif |
reed | b2d77e4 | 2014-10-14 08:26:33 -0700 | [diff] [blame] | 183 | SkScalar paintGamma = deviceProperties.gamma(); |
| 184 | SkScalar deviceGamma = deviceProperties.gamma(); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 185 | |
| 186 | size = SkScalerContext::GetGammaLUTSize(contrast, paintGamma, deviceGamma, |
| 187 | &width, &height); |
| 188 | |
| 189 | SkAutoTArray<uint8_t> data((int)size); |
| 190 | SkScalerContext::GetGammaLUTData(contrast, paintGamma, deviceGamma, data.get()); |
| 191 | |
| 192 | // TODO: Update this to use the cache rather than directly creating a texture. |
bsalomon | f2703d8 | 2014-10-28 14:33:06 -0700 | [diff] [blame] | 193 | GrSurfaceDesc desc; |
| 194 | desc.fFlags = kNone_GrSurfaceFlags; |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 195 | desc.fWidth = width; |
| 196 | desc.fHeight = height; |
| 197 | desc.fConfig = kAlpha_8_GrPixelConfig; |
| 198 | |
bsalomon | 5236cf4 | 2015-01-14 10:42:08 -0800 | [diff] [blame] | 199 | *gammaTexture = context->getGpu()->createTexture(desc, true, NULL, 0); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 200 | if (NULL == *gammaTexture) { |
| 201 | return; |
| 202 | } |
| 203 | |
bsalomon | 81beccc | 2014-10-13 12:32:55 -0700 | [diff] [blame] | 204 | (*gammaTexture)->writePixels(0, 0, width, height, |
| 205 | (*gammaTexture)->config(), data.get(), 0, |
| 206 | GrContext::kDontFlush_PixelOpsFlag); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 207 | } |
| 208 | } |
| 209 | |
joshualitt | 25d9c15 | 2015-02-18 12:29:52 -0800 | [diff] [blame^] | 210 | void GrDistanceFieldTextContext::onDrawText(GrRenderTarget* rt, const GrPaint& paint, |
| 211 | const SkPaint& skPaint, const SkMatrix& viewMatrix, |
joshualitt | 5531d51 | 2014-12-17 15:50:11 -0800 | [diff] [blame] | 212 | const char text[], size_t byteLength, |
| 213 | SkScalar x, SkScalar y) { |
jvanverth | aab626c | 2014-10-16 08:04:39 -0700 | [diff] [blame] | 214 | SkASSERT(byteLength == 0 || text != NULL); |
| 215 | |
jvanverth | 2b9dc1d | 2014-10-20 06:48:59 -0700 | [diff] [blame] | 216 | // nothing to draw |
| 217 | if (text == NULL || byteLength == 0) { |
jvanverth | aab626c | 2014-10-16 08:04:39 -0700 | [diff] [blame] | 218 | return; |
| 219 | } |
| 220 | |
joshualitt | 5531d51 | 2014-12-17 15:50:11 -0800 | [diff] [blame] | 221 | fViewMatrix = viewMatrix; |
jvanverth | 2b9dc1d | 2014-10-20 06:48:59 -0700 | [diff] [blame] | 222 | SkDrawCacheProc glyphCacheProc = skPaint.getDrawCacheProc(); |
| 223 | SkAutoGlyphCache autoCache(skPaint, &fDeviceProperties, NULL); |
| 224 | SkGlyphCache* cache = autoCache.getCache(); |
jvanverth | aab626c | 2014-10-16 08:04:39 -0700 | [diff] [blame] | 225 | |
jvanverth | 2b9dc1d | 2014-10-20 06:48:59 -0700 | [diff] [blame] | 226 | SkTArray<SkScalar> positions; |
jvanverth | aab626c | 2014-10-16 08:04:39 -0700 | [diff] [blame] | 227 | |
jvanverth | 2b9dc1d | 2014-10-20 06:48:59 -0700 | [diff] [blame] | 228 | const char* textPtr = text; |
| 229 | SkFixed stopX = 0; |
| 230 | SkFixed stopY = 0; |
| 231 | SkFixed origin; |
| 232 | switch (skPaint.getTextAlign()) { |
| 233 | case SkPaint::kRight_Align: origin = SK_Fixed1; break; |
| 234 | case SkPaint::kCenter_Align: origin = SK_FixedHalf; break; |
| 235 | case SkPaint::kLeft_Align: origin = 0; break; |
| 236 | default: SkFAIL("Invalid paint origin"); return; |
| 237 | } |
jvanverth | aab626c | 2014-10-16 08:04:39 -0700 | [diff] [blame] | 238 | |
jvanverth | 2b9dc1d | 2014-10-20 06:48:59 -0700 | [diff] [blame] | 239 | SkAutoKern autokern; |
jvanverth | aab626c | 2014-10-16 08:04:39 -0700 | [diff] [blame] | 240 | const char* stop = text + byteLength; |
jvanverth | 2b9dc1d | 2014-10-20 06:48:59 -0700 | [diff] [blame] | 241 | while (textPtr < stop) { |
| 242 | // don't need x, y here, since all subpixel variants will have the |
| 243 | // same advance |
| 244 | const SkGlyph& glyph = glyphCacheProc(cache, &textPtr, 0, 0); |
jvanverth | aab626c | 2014-10-16 08:04:39 -0700 | [diff] [blame] | 245 | |
jvanverth | 2b9dc1d | 2014-10-20 06:48:59 -0700 | [diff] [blame] | 246 | SkFixed width = glyph.fAdvanceX + autokern.adjust(glyph); |
| 247 | positions.push_back(SkFixedToScalar(stopX + SkFixedMul_portable(origin, width))); |
jvanverth | aab626c | 2014-10-16 08:04:39 -0700 | [diff] [blame] | 248 | |
jvanverth | 2b9dc1d | 2014-10-20 06:48:59 -0700 | [diff] [blame] | 249 | SkFixed height = glyph.fAdvanceY; |
| 250 | positions.push_back(SkFixedToScalar(stopY + SkFixedMul_portable(origin, height))); |
jvanverth | aab626c | 2014-10-16 08:04:39 -0700 | [diff] [blame] | 251 | |
jvanverth | 2b9dc1d | 2014-10-20 06:48:59 -0700 | [diff] [blame] | 252 | stopX += width; |
| 253 | stopY += height; |
jvanverth | aab626c | 2014-10-16 08:04:39 -0700 | [diff] [blame] | 254 | } |
jvanverth | 2b9dc1d | 2014-10-20 06:48:59 -0700 | [diff] [blame] | 255 | SkASSERT(textPtr == stop); |
jvanverth | aab626c | 2014-10-16 08:04:39 -0700 | [diff] [blame] | 256 | |
jvanverth | 2b9dc1d | 2014-10-20 06:48:59 -0700 | [diff] [blame] | 257 | // now adjust starting point depending on alignment |
| 258 | SkScalar alignX = SkFixedToScalar(stopX); |
| 259 | SkScalar alignY = SkFixedToScalar(stopY); |
| 260 | if (skPaint.getTextAlign() == SkPaint::kCenter_Align) { |
| 261 | alignX = SkScalarHalf(alignX); |
| 262 | alignY = SkScalarHalf(alignY); |
| 263 | } else if (skPaint.getTextAlign() == SkPaint::kLeft_Align) { |
| 264 | alignX = 0; |
| 265 | alignY = 0; |
jvanverth | aab626c | 2014-10-16 08:04:39 -0700 | [diff] [blame] | 266 | } |
jvanverth | 2b9dc1d | 2014-10-20 06:48:59 -0700 | [diff] [blame] | 267 | x -= alignX; |
| 268 | y -= alignY; |
| 269 | SkPoint offset = SkPoint::Make(x, y); |
jvanverth | aab626c | 2014-10-16 08:04:39 -0700 | [diff] [blame] | 270 | |
joshualitt | 25d9c15 | 2015-02-18 12:29:52 -0800 | [diff] [blame^] | 271 | this->drawPosText(rt, paint, skPaint, viewMatrix, text, byteLength, positions.begin(), 2, |
| 272 | offset); |
jvanverth | aab626c | 2014-10-16 08:04:39 -0700 | [diff] [blame] | 273 | } |
| 274 | |
joshualitt | 25d9c15 | 2015-02-18 12:29:52 -0800 | [diff] [blame^] | 275 | void GrDistanceFieldTextContext::onDrawPosText(GrRenderTarget* rt, const GrPaint& paint, |
| 276 | const SkPaint& skPaint, const SkMatrix& viewMatrix, |
joshualitt | 5531d51 | 2014-12-17 15:50:11 -0800 | [diff] [blame] | 277 | const char text[], size_t byteLength, |
| 278 | const SkScalar pos[], int scalarsPerPosition, |
| 279 | const SkPoint& offset) { |
commit-bot@chromium.org | 8128d8c | 2013-12-19 16:12:25 +0000 | [diff] [blame] | 280 | |
| 281 | SkASSERT(byteLength == 0 || text != NULL); |
| 282 | SkASSERT(1 == scalarsPerPosition || 2 == scalarsPerPosition); |
| 283 | |
| 284 | // nothing to draw |
commit-bot@chromium.org | cbbc481 | 2014-01-30 22:05:47 +0000 | [diff] [blame] | 285 | if (text == NULL || byteLength == 0 /* no raster clip? || fRC->isEmpty()*/) { |
commit-bot@chromium.org | 8128d8c | 2013-12-19 16:12:25 +0000 | [diff] [blame] | 286 | return; |
| 287 | } |
| 288 | |
joshualitt | 5531d51 | 2014-12-17 15:50:11 -0800 | [diff] [blame] | 289 | fViewMatrix = viewMatrix; |
joshualitt | 25d9c15 | 2015-02-18 12:29:52 -0800 | [diff] [blame^] | 290 | this->init(rt, paint, skPaint); |
commit-bot@chromium.org | cbbc481 | 2014-01-30 22:05:47 +0000 | [diff] [blame] | 291 | |
commit-bot@chromium.org | 8128d8c | 2013-12-19 16:12:25 +0000 | [diff] [blame] | 292 | SkDrawCacheProc glyphCacheProc = fSkPaint.getDrawCacheProc(); |
| 293 | |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 294 | SkAutoGlyphCacheNoGamma autoCache(fSkPaint, &fDeviceProperties, NULL); |
| 295 | SkGlyphCache* cache = autoCache.getCache(); |
| 296 | GrFontScaler* fontScaler = GetGrFontScaler(cache); |
| 297 | |
| 298 | setup_gamma_texture(fContext, cache, fDeviceProperties, &fGammaTexture); |
skia.committer@gmail.com | e5d7015 | 2014-01-29 07:01:48 +0000 | [diff] [blame] | 299 | |
jvanverth | 73f1053 | 2014-10-23 11:57:12 -0700 | [diff] [blame] | 300 | int numGlyphs = fSkPaint.textToGlyphs(text, byteLength, NULL); |
| 301 | fTotalVertexCount = kVerticesPerGlyph*numGlyphs; |
| 302 | |
commit-bot@chromium.org | 8128d8c | 2013-12-19 16:12:25 +0000 | [diff] [blame] | 303 | const char* stop = text + byteLength; |
jvanverth | fca302c | 2014-10-20 13:12:54 -0700 | [diff] [blame] | 304 | SkTArray<char> fallbackTxt; |
| 305 | SkTArray<SkScalar> fallbackPos; |
commit-bot@chromium.org | 8128d8c | 2013-12-19 16:12:25 +0000 | [diff] [blame] | 306 | |
| 307 | if (SkPaint::kLeft_Align == fSkPaint.getTextAlign()) { |
| 308 | while (text < stop) { |
jvanverth | fca302c | 2014-10-20 13:12:54 -0700 | [diff] [blame] | 309 | const char* lastText = text; |
commit-bot@chromium.org | 8128d8c | 2013-12-19 16:12:25 +0000 | [diff] [blame] | 310 | // the last 2 parameters are ignored |
| 311 | const SkGlyph& glyph = glyphCacheProc(cache, &text, 0, 0); |
| 312 | |
| 313 | if (glyph.fWidth) { |
fmalita | 05c4a43 | 2014-09-29 06:29:53 -0700 | [diff] [blame] | 314 | SkScalar x = offset.x() + pos[0]; |
| 315 | SkScalar y = offset.y() + (2 == scalarsPerPosition ? pos[1] : 0); |
commit-bot@chromium.org | 8128d8c | 2013-12-19 16:12:25 +0000 | [diff] [blame] | 316 | |
jvanverth | fca302c | 2014-10-20 13:12:54 -0700 | [diff] [blame] | 317 | if (!this->appendGlyph(GrGlyph::Pack(glyph.getGlyphID(), |
| 318 | glyph.getSubXFixed(), |
| 319 | glyph.getSubYFixed()), |
djsollen | 058f01e | 2014-10-30 11:54:43 -0700 | [diff] [blame] | 320 | x, y, fontScaler)) { |
jvanverth | fca302c | 2014-10-20 13:12:54 -0700 | [diff] [blame] | 321 | // couldn't append, send to fallback |
bsalomon | ef3fcd8 | 2014-12-12 08:51:38 -0800 | [diff] [blame] | 322 | fallbackTxt.push_back_n(SkToInt(text-lastText), lastText); |
jvanverth | fca302c | 2014-10-20 13:12:54 -0700 | [diff] [blame] | 323 | fallbackPos.push_back(pos[0]); |
| 324 | if (2 == scalarsPerPosition) { |
| 325 | fallbackPos.push_back(pos[1]); |
| 326 | } |
| 327 | } |
commit-bot@chromium.org | 8128d8c | 2013-12-19 16:12:25 +0000 | [diff] [blame] | 328 | } |
| 329 | pos += scalarsPerPosition; |
| 330 | } |
| 331 | } else { |
jvanverth | 2b9dc1d | 2014-10-20 06:48:59 -0700 | [diff] [blame] | 332 | SkScalar alignMul = SkPaint::kCenter_Align == fSkPaint.getTextAlign() ? SK_ScalarHalf |
| 333 | : SK_Scalar1; |
commit-bot@chromium.org | 8128d8c | 2013-12-19 16:12:25 +0000 | [diff] [blame] | 334 | while (text < stop) { |
jvanverth | fca302c | 2014-10-20 13:12:54 -0700 | [diff] [blame] | 335 | const char* lastText = text; |
commit-bot@chromium.org | 8128d8c | 2013-12-19 16:12:25 +0000 | [diff] [blame] | 336 | // the last 2 parameters are ignored |
| 337 | const SkGlyph& glyph = glyphCacheProc(cache, &text, 0, 0); |
| 338 | |
| 339 | if (glyph.fWidth) { |
fmalita | 05c4a43 | 2014-09-29 06:29:53 -0700 | [diff] [blame] | 340 | SkScalar x = offset.x() + pos[0]; |
| 341 | SkScalar y = offset.y() + (2 == scalarsPerPosition ? pos[1] : 0); |
skia.committer@gmail.com | 22e9672 | 2013-12-20 07:01:36 +0000 | [diff] [blame] | 342 | |
jvanverth | 2b9dc1d | 2014-10-20 06:48:59 -0700 | [diff] [blame] | 343 | SkScalar advanceX = SkFixedToScalar(glyph.fAdvanceX)*alignMul*fTextRatio; |
| 344 | SkScalar advanceY = SkFixedToScalar(glyph.fAdvanceY)*alignMul*fTextRatio; |
| 345 | |
jvanverth | fca302c | 2014-10-20 13:12:54 -0700 | [diff] [blame] | 346 | if (!this->appendGlyph(GrGlyph::Pack(glyph.getGlyphID(), |
| 347 | glyph.getSubXFixed(), |
| 348 | glyph.getSubYFixed()), |
djsollen | 058f01e | 2014-10-30 11:54:43 -0700 | [diff] [blame] | 349 | x - advanceX, y - advanceY, fontScaler)) { |
jvanverth | fca302c | 2014-10-20 13:12:54 -0700 | [diff] [blame] | 350 | // couldn't append, send to fallback |
bsalomon | ef3fcd8 | 2014-12-12 08:51:38 -0800 | [diff] [blame] | 351 | fallbackTxt.push_back_n(SkToInt(text-lastText), lastText); |
jvanverth | fca302c | 2014-10-20 13:12:54 -0700 | [diff] [blame] | 352 | fallbackPos.push_back(pos[0]); |
| 353 | if (2 == scalarsPerPosition) { |
| 354 | fallbackPos.push_back(pos[1]); |
| 355 | } |
| 356 | } |
commit-bot@chromium.org | 8128d8c | 2013-12-19 16:12:25 +0000 | [diff] [blame] | 357 | } |
| 358 | pos += scalarsPerPosition; |
| 359 | } |
| 360 | } |
commit-bot@chromium.org | cbbc481 | 2014-01-30 22:05:47 +0000 | [diff] [blame] | 361 | |
| 362 | this->finish(); |
jvanverth | fca302c | 2014-10-20 13:12:54 -0700 | [diff] [blame] | 363 | |
| 364 | if (fallbackTxt.count() > 0) { |
joshualitt | 25d9c15 | 2015-02-18 12:29:52 -0800 | [diff] [blame^] | 365 | fFallbackTextContext->drawPosText(rt, paint, skPaint, viewMatrix, fallbackTxt.begin(), |
joshualitt | 5531d51 | 2014-12-17 15:50:11 -0800 | [diff] [blame] | 366 | fallbackTxt.count(), fallbackPos.begin(), |
| 367 | scalarsPerPosition, offset); |
jvanverth | fca302c | 2014-10-20 13:12:54 -0700 | [diff] [blame] | 368 | } |
commit-bot@chromium.org | 8128d8c | 2013-12-19 16:12:25 +0000 | [diff] [blame] | 369 | } |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 370 | |
| 371 | static inline GrColor skcolor_to_grcolor_nopremultiply(SkColor c) { |
| 372 | unsigned r = SkColorGetR(c); |
| 373 | unsigned g = SkColorGetG(c); |
| 374 | unsigned b = SkColorGetB(c); |
| 375 | return GrColorPackRGBA(r, g, b, 0xff); |
| 376 | } |
| 377 | |
joshualitt | 9853cce | 2014-11-17 14:22:48 -0800 | [diff] [blame] | 378 | static size_t get_vertex_stride(bool useColorVerts) { |
jvanverth | 5a105ff | 2015-02-18 11:36:35 -0800 | [diff] [blame] | 379 | return useColorVerts ? (sizeof(SkPoint) + sizeof(GrColor) + sizeof(SkIPoint16)) : |
| 380 | (sizeof(SkPoint) + sizeof(SkIPoint16)); |
joshualitt | 9853cce | 2014-11-17 14:22:48 -0800 | [diff] [blame] | 381 | } |
| 382 | |
| 383 | static void* alloc_vertices(GrDrawTarget* drawTarget, |
| 384 | int numVertices, |
| 385 | bool useColorVerts) { |
jvanverth | 73f1053 | 2014-10-23 11:57:12 -0700 | [diff] [blame] | 386 | if (numVertices <= 0) { |
| 387 | return NULL; |
| 388 | } |
| 389 | |
jvanverth | 73f1053 | 2014-10-23 11:57:12 -0700 | [diff] [blame] | 390 | void* vertices = NULL; |
| 391 | bool success = drawTarget->reserveVertexAndIndexSpace(numVertices, |
joshualitt | 9853cce | 2014-11-17 14:22:48 -0800 | [diff] [blame] | 392 | get_vertex_stride(useColorVerts), |
jvanverth | 73f1053 | 2014-10-23 11:57:12 -0700 | [diff] [blame] | 393 | 0, |
| 394 | &vertices, |
| 395 | NULL); |
| 396 | GrAlwaysAssert(success); |
| 397 | return vertices; |
| 398 | } |
| 399 | |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 400 | void GrDistanceFieldTextContext::setupCoverageEffect(const SkColor& filteredColor) { |
| 401 | GrTextureParams params(SkShader::kRepeat_TileMode, GrTextureParams::kBilerp_FilterMode); |
| 402 | GrTextureParams gammaParams(SkShader::kClamp_TileMode, GrTextureParams::kNone_FilterMode); |
| 403 | |
| 404 | uint32_t textureUniqueID = fCurrTexture->getUniqueID(); |
joshualitt | 5531d51 | 2014-12-17 15:50:11 -0800 | [diff] [blame] | 405 | const SkMatrix& ctm = fViewMatrix; |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 406 | |
| 407 | // set up any flags |
| 408 | uint32_t flags = 0; |
| 409 | flags |= ctm.isSimilarity() ? kSimilarity_DistanceFieldEffectFlag : 0; |
| 410 | flags |= fUseLCDText ? kUseLCD_DistanceFieldEffectFlag : 0; |
| 411 | flags |= fUseLCDText && ctm.rectStaysRect() ? |
| 412 | kRectToRect_DistanceFieldEffectFlag : 0; |
reed | b2d77e4 | 2014-10-14 08:26:33 -0700 | [diff] [blame] | 413 | bool useBGR = SkPixelGeometryIsBGR(fDeviceProperties.pixelGeometry()); |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 414 | flags |= fUseLCDText && useBGR ? kBGR_DistanceFieldEffectFlag : 0; |
| 415 | |
| 416 | // see if we need to create a new effect |
| 417 | if (textureUniqueID != fEffectTextureUniqueID || |
| 418 | filteredColor != fEffectColor || |
joshualitt | 8059eb9 | 2014-12-29 15:10:07 -0800 | [diff] [blame] | 419 | flags != fEffectFlags || |
| 420 | !fCachedGeometryProcessor->viewMatrix().cheapEqualTo(fViewMatrix)) { |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame] | 421 | GrColor color = fPaint.getColor(); |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 422 | if (fUseLCDText) { |
| 423 | GrColor colorNoPreMul = skcolor_to_grcolor_nopremultiply(filteredColor); |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame] | 424 | fCachedGeometryProcessor.reset(GrDistanceFieldLCDTextureEffect::Create(color, |
joshualitt | 8059eb9 | 2014-12-29 15:10:07 -0800 | [diff] [blame] | 425 | fViewMatrix, |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame] | 426 | fCurrTexture, |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 427 | params, |
| 428 | fGammaTexture, |
| 429 | gammaParams, |
| 430 | colorNoPreMul, |
| 431 | flags)); |
| 432 | } else { |
joshualitt | 2dd1ae0 | 2014-12-03 06:24:10 -0800 | [diff] [blame] | 433 | flags |= kColorAttr_DistanceFieldEffectFlag; |
joshualitt | 56995b5 | 2014-12-11 15:44:02 -0800 | [diff] [blame] | 434 | bool opaque = GrColorIsOpaque(color); |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 435 | #ifdef SK_GAMMA_APPLY_TO_A8 |
reed | b2d77e4 | 2014-10-14 08:26:33 -0700 | [diff] [blame] | 436 | U8CPU lum = SkColorSpaceLuminance::computeLuminance(fDeviceProperties.gamma(), |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 437 | filteredColor); |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame] | 438 | fCachedGeometryProcessor.reset(GrDistanceFieldTextureEffect::Create(color, |
joshualitt | 8059eb9 | 2014-12-29 15:10:07 -0800 | [diff] [blame] | 439 | fViewMatrix, |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame] | 440 | fCurrTexture, |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 441 | params, |
| 442 | fGammaTexture, |
| 443 | gammaParams, |
| 444 | lum/255.f, |
joshualitt | 56995b5 | 2014-12-11 15:44:02 -0800 | [diff] [blame] | 445 | flags, |
| 446 | opaque)); |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 447 | #else |
jvanverth | 5a105ff | 2015-02-18 11:36:35 -0800 | [diff] [blame] | 448 | fCachedGeometryProcessor.reset(GrDistanceFieldTextureEffect::Create(color, |
| 449 | fViewMatrix, |
| 450 | fCurrTexture, |
| 451 | params, |
| 452 | flags, |
| 453 | opaque)); |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 454 | #endif |
| 455 | } |
| 456 | fEffectTextureUniqueID = textureUniqueID; |
| 457 | fEffectColor = filteredColor; |
| 458 | fEffectFlags = flags; |
| 459 | } |
| 460 | |
| 461 | } |
| 462 | |
jvanverth | 787cdf9 | 2014-12-04 10:46:50 -0800 | [diff] [blame] | 463 | inline bool GrDistanceFieldTextContext::uploadGlyph(GrGlyph* glyph, GrFontScaler* scaler) { |
| 464 | if (!fStrike->glyphTooLargeForAtlas(glyph)) { |
| 465 | if (fStrike->addGlyphToAtlas(glyph, scaler)) { |
| 466 | return true; |
| 467 | } |
| 468 | |
| 469 | // try to clear out an unused plot before we flush |
| 470 | if (fContext->getFontCache()->freeUnusedPlot(fStrike, glyph) && |
| 471 | fStrike->addGlyphToAtlas(glyph, scaler)) { |
| 472 | return true; |
| 473 | } |
| 474 | |
| 475 | if (c_DumpFontCache) { |
| 476 | #ifdef SK_DEVELOPER |
| 477 | fContext->getFontCache()->dump(); |
| 478 | #endif |
| 479 | } |
| 480 | |
| 481 | // before we purge the cache, we must flush any accumulated draws |
| 482 | this->flush(); |
| 483 | fContext->flush(); |
| 484 | |
| 485 | // we should have an unused plot now |
| 486 | if (fContext->getFontCache()->freeUnusedPlot(fStrike, glyph) && |
| 487 | fStrike->addGlyphToAtlas(glyph, scaler)) { |
| 488 | return true; |
| 489 | } |
| 490 | |
| 491 | // we should never get here |
| 492 | SkASSERT(false); |
| 493 | } |
| 494 | |
| 495 | return false; |
| 496 | } |
| 497 | |
| 498 | |
jvanverth | fca302c | 2014-10-20 13:12:54 -0700 | [diff] [blame] | 499 | // Returns true if this method handled the glyph, false if needs to be passed to fallback |
| 500 | // |
| 501 | bool GrDistanceFieldTextContext::appendGlyph(GrGlyph::PackedID packed, |
djsollen | 058f01e | 2014-10-30 11:54:43 -0700 | [diff] [blame] | 502 | SkScalar sx, SkScalar sy, |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 503 | GrFontScaler* scaler) { |
| 504 | if (NULL == fDrawTarget) { |
jvanverth | fca302c | 2014-10-20 13:12:54 -0700 | [diff] [blame] | 505 | return true; |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 506 | } |
| 507 | |
| 508 | if (NULL == fStrike) { |
| 509 | fStrike = fContext->getFontCache()->getStrike(scaler, true); |
| 510 | } |
| 511 | |
| 512 | GrGlyph* glyph = fStrike->getGlyph(packed, scaler); |
| 513 | if (NULL == glyph || glyph->fBounds.isEmpty()) { |
jvanverth | fca302c | 2014-10-20 13:12:54 -0700 | [diff] [blame] | 514 | return true; |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 515 | } |
| 516 | |
jvanverth | fca302c | 2014-10-20 13:12:54 -0700 | [diff] [blame] | 517 | // fallback to color glyph support |
jvanverth | 294c326 | 2014-10-10 11:36:12 -0700 | [diff] [blame] | 518 | if (kA8_GrMaskFormat != glyph->fMaskFormat) { |
jvanverth | fca302c | 2014-10-20 13:12:54 -0700 | [diff] [blame] | 519 | return false; |
jvanverth | 294c326 | 2014-10-10 11:36:12 -0700 | [diff] [blame] | 520 | } |
| 521 | |
jvanverth | 2faa228 | 2014-10-31 12:59:57 -0700 | [diff] [blame] | 522 | SkScalar dx = SkIntToScalar(glyph->fBounds.fLeft + SK_DistanceFieldInset); |
| 523 | SkScalar dy = SkIntToScalar(glyph->fBounds.fTop + SK_DistanceFieldInset); |
| 524 | SkScalar width = SkIntToScalar(glyph->fBounds.width() - 2*SK_DistanceFieldInset); |
| 525 | SkScalar height = SkIntToScalar(glyph->fBounds.height() - 2*SK_DistanceFieldInset); |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 526 | |
jvanverth | 2faa228 | 2014-10-31 12:59:57 -0700 | [diff] [blame] | 527 | SkScalar scale = fTextRatio; |
| 528 | dx *= scale; |
| 529 | dy *= scale; |
| 530 | sx += dx; |
| 531 | sy += dy; |
| 532 | width *= scale; |
| 533 | height *= scale; |
| 534 | SkRect glyphRect = SkRect::MakeXYWH(sx, sy, width, height); |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 535 | |
| 536 | // check if we clipped out |
jvanverth | 2faa228 | 2014-10-31 12:59:57 -0700 | [diff] [blame] | 537 | SkRect dstRect; |
joshualitt | 5531d51 | 2014-12-17 15:50:11 -0800 | [diff] [blame] | 538 | const SkMatrix& ctm = fViewMatrix; |
jvanverth | 2faa228 | 2014-10-31 12:59:57 -0700 | [diff] [blame] | 539 | (void) ctm.mapRect(&dstRect, glyphRect); |
| 540 | if (fClipRect.quickReject(SkScalarTruncToInt(dstRect.left()), |
| 541 | SkScalarTruncToInt(dstRect.top()), |
| 542 | SkScalarTruncToInt(dstRect.right()), |
| 543 | SkScalarTruncToInt(dstRect.bottom()))) { |
jvanverth | 2faa228 | 2014-10-31 12:59:57 -0700 | [diff] [blame] | 544 | return true; |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 545 | } |
jvanverth | 2faa228 | 2014-10-31 12:59:57 -0700 | [diff] [blame] | 546 | |
jvanverth | 95f9b5f | 2014-12-05 07:56:53 -0800 | [diff] [blame] | 547 | if (NULL == glyph->fPlot) { |
| 548 | // needs to be a separate conditional to avoid over-optimization |
| 549 | // on Nexus 7 and Nexus 10 |
joshualitt | c262582 | 2014-12-18 16:40:54 -0800 | [diff] [blame] | 550 | |
| 551 | // If the glyph is too large we fall back to paths |
jvanverth | 95f9b5f | 2014-12-05 07:56:53 -0800 | [diff] [blame] | 552 | if (!uploadGlyph(glyph, scaler)) { |
| 553 | if (NULL == glyph->fPath) { |
| 554 | SkPath* path = SkNEW(SkPath); |
| 555 | if (!scaler->getGlyphPath(glyph->glyphID(), path)) { |
| 556 | // flag the glyph as being dead? |
| 557 | delete path; |
| 558 | return true; |
| 559 | } |
| 560 | glyph->fPath = path; |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 561 | } |
jvanverth | 95f9b5f | 2014-12-05 07:56:53 -0800 | [diff] [blame] | 562 | |
| 563 | // flush any accumulated draws before drawing this glyph as a path. |
| 564 | this->flush(); |
| 565 | |
jvanverth | 95f9b5f | 2014-12-05 07:56:53 -0800 | [diff] [blame] | 566 | SkMatrix ctm; |
| 567 | ctm.setScale(fTextRatio, fTextRatio); |
| 568 | ctm.postTranslate(sx - dx, sy - dy); |
joshualitt | 5531d51 | 2014-12-17 15:50:11 -0800 | [diff] [blame] | 569 | |
joshualitt | c262582 | 2014-12-18 16:40:54 -0800 | [diff] [blame] | 570 | SkPath tmpPath(*glyph->fPath); |
| 571 | tmpPath.transform(ctm); |
| 572 | |
jvanverth | 95f9b5f | 2014-12-05 07:56:53 -0800 | [diff] [blame] | 573 | GrStrokeInfo strokeInfo(SkStrokeRec::kFill_InitStyle); |
joshualitt | 25d9c15 | 2015-02-18 12:29:52 -0800 | [diff] [blame^] | 574 | fContext->drawPath(fRenderTarget, fPaint, fViewMatrix, tmpPath, strokeInfo); |
jvanverth | 95f9b5f | 2014-12-05 07:56:53 -0800 | [diff] [blame] | 575 | |
| 576 | // remove this glyph from the vertices we need to allocate |
| 577 | fTotalVertexCount -= kVerticesPerGlyph; |
| 578 | return true; |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 579 | } |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 580 | } |
| 581 | |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 582 | SkASSERT(glyph->fPlot); |
| 583 | GrDrawTarget::DrawToken drawToken = fDrawTarget->getCurrentDrawToken(); |
| 584 | glyph->fPlot->setDrawToken(drawToken); |
| 585 | |
| 586 | GrTexture* texture = glyph->fPlot->texture(); |
| 587 | SkASSERT(texture); |
| 588 | |
jvanverth | 73f1053 | 2014-10-23 11:57:12 -0700 | [diff] [blame] | 589 | if (fCurrTexture != texture || fCurrVertex + kVerticesPerGlyph > fTotalVertexCount) { |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 590 | this->flush(); |
| 591 | fCurrTexture = texture; |
| 592 | fCurrTexture->ref(); |
| 593 | } |
| 594 | |
| 595 | bool useColorVerts = !fUseLCDText; |
| 596 | |
| 597 | if (NULL == fVertices) { |
jvanverth | 73f1053 | 2014-10-23 11:57:12 -0700 | [diff] [blame] | 598 | int maxQuadVertices = kVerticesPerGlyph * fContext->getQuadIndexBuffer()->maxQuads(); |
| 599 | fAllocVertexCount = SkMin32(fTotalVertexCount, maxQuadVertices); |
joshualitt | 9853cce | 2014-11-17 14:22:48 -0800 | [diff] [blame] | 600 | fVertices = alloc_vertices(fDrawTarget, |
| 601 | fAllocVertexCount, |
| 602 | useColorVerts); |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 603 | } |
| 604 | |
jvanverth | 2faa228 | 2014-10-31 12:59:57 -0700 | [diff] [blame] | 605 | fVertexBounds.joinNonEmptyArg(glyphRect); |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 606 | |
jvanverth | 5a105ff | 2015-02-18 11:36:35 -0800 | [diff] [blame] | 607 | int u0 = glyph->fAtlasLocation.fX + SK_DistanceFieldInset; |
| 608 | int v0 = glyph->fAtlasLocation.fY + SK_DistanceFieldInset; |
| 609 | int u1 = u0 + glyph->fBounds.width() - 2*SK_DistanceFieldInset; |
| 610 | int v1 = v0 + glyph->fBounds.height() - 2*SK_DistanceFieldInset; |
| 611 | |
joshualitt | 9853cce | 2014-11-17 14:22:48 -0800 | [diff] [blame] | 612 | size_t vertSize = get_vertex_stride(useColorVerts); |
jvanverth | 5a105ff | 2015-02-18 11:36:35 -0800 | [diff] [blame] | 613 | intptr_t vertex = reinterpret_cast<intptr_t>(fVertices) + vertSize * fCurrVertex; |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 614 | |
jvanverth | 5a105ff | 2015-02-18 11:36:35 -0800 | [diff] [blame] | 615 | // V0 |
| 616 | SkPoint* position = reinterpret_cast<SkPoint*>(vertex); |
| 617 | position->set(glyphRect.fLeft, glyphRect.fTop); |
jvanverth | 059034d | 2015-02-17 08:39:56 -0800 | [diff] [blame] | 618 | if (useColorVerts) { |
jvanverth | 5a105ff | 2015-02-18 11:36:35 -0800 | [diff] [blame] | 619 | SkColor* color = reinterpret_cast<SkColor*>(vertex + sizeof(SkPoint)); |
| 620 | *color = fPaint.getColor(); |
jvanverth | 059034d | 2015-02-17 08:39:56 -0800 | [diff] [blame] | 621 | } |
jvanverth | 5a105ff | 2015-02-18 11:36:35 -0800 | [diff] [blame] | 622 | SkIPoint16* textureCoords = reinterpret_cast<SkIPoint16*>(vertex + vertSize - |
| 623 | sizeof(SkIPoint16)); |
| 624 | textureCoords->set(u0, v0); |
| 625 | vertex += vertSize; |
| 626 | |
| 627 | // V1 |
| 628 | position = reinterpret_cast<SkPoint*>(vertex); |
| 629 | position->set(glyphRect.fLeft, glyphRect.fBottom); |
| 630 | if (useColorVerts) { |
| 631 | SkColor* color = reinterpret_cast<SkColor*>(vertex + sizeof(SkPoint)); |
| 632 | *color = fPaint.getColor(); |
| 633 | } |
| 634 | textureCoords = reinterpret_cast<SkIPoint16*>(vertex + vertSize - sizeof(SkIPoint16)); |
| 635 | textureCoords->set(u0, v1); |
| 636 | vertex += vertSize; |
| 637 | |
| 638 | // V2 |
| 639 | position = reinterpret_cast<SkPoint*>(vertex); |
| 640 | position->set(glyphRect.fRight, glyphRect.fBottom); |
| 641 | if (useColorVerts) { |
| 642 | SkColor* color = reinterpret_cast<SkColor*>(vertex + sizeof(SkPoint)); |
| 643 | *color = fPaint.getColor(); |
| 644 | } |
| 645 | textureCoords = reinterpret_cast<SkIPoint16*>(vertex + vertSize - sizeof(SkIPoint16)); |
| 646 | textureCoords->set(u1, v1); |
| 647 | vertex += vertSize; |
| 648 | |
| 649 | // V3 |
| 650 | position = reinterpret_cast<SkPoint*>(vertex); |
| 651 | position->set(glyphRect.fRight, glyphRect.fTop); |
| 652 | if (useColorVerts) { |
| 653 | SkColor* color = reinterpret_cast<SkColor*>(vertex + sizeof(SkPoint)); |
| 654 | *color = fPaint.getColor(); |
| 655 | } |
| 656 | textureCoords = reinterpret_cast<SkIPoint16*>(vertex + vertSize - sizeof(SkIPoint16)); |
| 657 | textureCoords->set(u1, v0); |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 658 | |
| 659 | fCurrVertex += 4; |
jvanverth | fca302c | 2014-10-20 13:12:54 -0700 | [diff] [blame] | 660 | |
| 661 | return true; |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 662 | } |
| 663 | |
| 664 | void GrDistanceFieldTextContext::flush() { |
| 665 | if (NULL == fDrawTarget) { |
| 666 | return; |
| 667 | } |
| 668 | |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 669 | if (fCurrVertex > 0) { |
egdaniel | 8dd688b | 2015-01-22 10:16:09 -0800 | [diff] [blame] | 670 | GrPipelineBuilder pipelineBuilder; |
joshualitt | 25d9c15 | 2015-02-18 12:29:52 -0800 | [diff] [blame^] | 671 | pipelineBuilder.setFromPaint(fPaint, fRenderTarget); |
joshualitt | 780b11e | 2014-11-18 09:40:40 -0800 | [diff] [blame] | 672 | |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 673 | // setup our sampler state for our text texture/atlas |
| 674 | SkASSERT(SkIsAlign4(fCurrVertex)); |
| 675 | |
| 676 | // get our current color |
| 677 | SkColor filteredColor; |
| 678 | SkColorFilter* colorFilter = fSkPaint.getColorFilter(); |
| 679 | if (colorFilter) { |
| 680 | filteredColor = colorFilter->filterColor(fSkPaint.getColor()); |
| 681 | } else { |
| 682 | filteredColor = fSkPaint.getColor(); |
| 683 | } |
| 684 | this->setupCoverageEffect(filteredColor); |
| 685 | |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 686 | // Set draw state |
| 687 | if (fUseLCDText) { |
egdaniel | 378092f | 2014-12-03 10:40:13 -0800 | [diff] [blame] | 688 | // TODO: move supportsRGBCoverage check to setupCoverageEffect and only add LCD |
| 689 | // processor if the xp can support it. For now we will simply assume that if |
| 690 | // fUseLCDText is true, then we have a known color output. |
egdaniel | 8dd688b | 2015-01-22 10:16:09 -0800 | [diff] [blame] | 691 | const GrXPFactory* xpFactory = pipelineBuilder.getXPFactory(); |
| 692 | if (!xpFactory->supportsRGBCoverage(0, kRGBA_GrColorComponentFlags)) { |
tfarina | 38406c8 | 2014-10-31 07:11:12 -0700 | [diff] [blame] | 693 | SkDebugf("LCD Text will not draw correctly.\n"); |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 694 | } |
joshualitt | 56995b5 | 2014-12-11 15:44:02 -0800 | [diff] [blame] | 695 | SkASSERT(!fCachedGeometryProcessor->hasVertexColor()); |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 696 | } else { |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 697 | // We're using per-vertex color. |
joshualitt | 56995b5 | 2014-12-11 15:44:02 -0800 | [diff] [blame] | 698 | SkASSERT(fCachedGeometryProcessor->hasVertexColor()); |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 699 | } |
jvanverth | 73f1053 | 2014-10-23 11:57:12 -0700 | [diff] [blame] | 700 | int nGlyphs = fCurrVertex / kVerticesPerGlyph; |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 701 | fDrawTarget->setIndexSourceToBuffer(fContext->getQuadIndexBuffer()); |
egdaniel | 8dd688b | 2015-01-22 10:16:09 -0800 | [diff] [blame] | 702 | fDrawTarget->drawIndexedInstances(&pipelineBuilder, |
joshualitt | 56995b5 | 2014-12-11 15:44:02 -0800 | [diff] [blame] | 703 | fCachedGeometryProcessor.get(), |
joshualitt | 9853cce | 2014-11-17 14:22:48 -0800 | [diff] [blame] | 704 | kTriangles_GrPrimitiveType, |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 705 | nGlyphs, |
joshualitt | 9853cce | 2014-11-17 14:22:48 -0800 | [diff] [blame] | 706 | kVerticesPerGlyph, |
| 707 | kIndicesPerGlyph, |
| 708 | &fVertexBounds); |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 709 | fDrawTarget->resetVertexSource(); |
| 710 | fVertices = NULL; |
jvanverth | 73f1053 | 2014-10-23 11:57:12 -0700 | [diff] [blame] | 711 | fTotalVertexCount -= fCurrVertex; |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 712 | fCurrVertex = 0; |
| 713 | SkSafeSetNull(fCurrTexture); |
| 714 | fVertexBounds.setLargestInverted(); |
| 715 | } |
| 716 | } |
| 717 | |
| 718 | inline void GrDistanceFieldTextContext::finish() { |
| 719 | this->flush(); |
jvanverth | 73f1053 | 2014-10-23 11:57:12 -0700 | [diff] [blame] | 720 | fTotalVertexCount = 0; |
jvanverth | 0fedb19 | 2014-10-08 09:07:27 -0700 | [diff] [blame] | 721 | |
| 722 | GrTextContext::finish(); |
| 723 | } |
| 724 | |