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      1 /*
      2  * Copyright 2015 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 "GrAtlasTextBlob.h"
      9 
     10 #include "GrBlurUtils.h"
     11 #include "GrContext.h"
     12 #include "GrDrawContext.h"
     13 #include "GrTextUtils.h"
     14 #include "SkColorFilter.h"
     15 #include "SkDrawFilter.h"
     16 #include "SkGlyphCache.h"
     17 #include "SkTextBlobRunIterator.h"
     18 #include "batches/GrAtlasTextBatch.h"
     19 
     20 GrAtlasTextBlob* GrAtlasTextBlob::Create(GrMemoryPool* pool, int glyphCount, int runCount) {
     21     // We allocate size for the GrAtlasTextBlob itself, plus size for the vertices array,
     22     // and size for the glyphIds array.
     23     size_t verticesCount = glyphCount * kVerticesPerGlyph * kMaxVASize;
     24     size_t size = sizeof(GrAtlasTextBlob) +
     25                   verticesCount +
     26                   glyphCount * sizeof(GrGlyph**) +
     27                   sizeof(GrAtlasTextBlob::Run) * runCount;
     28 
     29     void* allocation = pool->allocate(size);
     30     if (CACHE_SANITY_CHECK) {
     31         sk_bzero(allocation, size);
     32     }
     33 
     34     GrAtlasTextBlob* cacheBlob = new (allocation) GrAtlasTextBlob;
     35     cacheBlob->fSize = size;
     36 
     37     // setup offsets for vertices / glyphs
     38     cacheBlob->fVertices = sizeof(GrAtlasTextBlob) + reinterpret_cast<unsigned char*>(cacheBlob);
     39     cacheBlob->fGlyphs = reinterpret_cast<GrGlyph**>(cacheBlob->fVertices + verticesCount);
     40     cacheBlob->fRuns = reinterpret_cast<GrAtlasTextBlob::Run*>(cacheBlob->fGlyphs + glyphCount);
     41 
     42     // Initialize runs
     43     for (int i = 0; i < runCount; i++) {
     44         new (&cacheBlob->fRuns[i]) GrAtlasTextBlob::Run;
     45     }
     46     cacheBlob->fRunCount = runCount;
     47     cacheBlob->fPool = pool;
     48     return cacheBlob;
     49 }
     50 
     51 
     52 SkGlyphCache* GrAtlasTextBlob::setupCache(int runIndex,
     53                                           const SkSurfaceProps& props,
     54                                           SkPaint::FakeGamma fakeGamma,
     55                                           const SkPaint& skPaint,
     56                                           const SkMatrix* viewMatrix) {
     57     GrAtlasTextBlob::Run* run = &fRuns[runIndex];
     58 
     59     // if we have an override descriptor for the run, then we should use that
     60     SkAutoDescriptor* desc = run->fOverrideDescriptor.get() ? run->fOverrideDescriptor.get() :
     61                                                               &run->fDescriptor;
     62     skPaint.getScalerContextDescriptor(desc, props, fakeGamma, viewMatrix);
     63     run->fTypeface.reset(SkSafeRef(skPaint.getTypeface()));
     64     return SkGlyphCache::DetachCache(run->fTypeface, desc->getDesc());
     65 }
     66 
     67 void GrAtlasTextBlob::appendGlyph(int runIndex,
     68                                   const SkRect& positions,
     69                                   GrColor color,
     70                                   GrBatchTextStrike* strike,
     71                                   GrGlyph* glyph,
     72                                   GrFontScaler* scaler, const SkGlyph& skGlyph,
     73                                   SkScalar x, SkScalar y, SkScalar scale, bool applyVM) {
     74 
     75     // If the glyph is too large we fall back to paths
     76     if (glyph->fTooLargeForAtlas) {
     77         this->appendLargeGlyph(glyph, scaler, skGlyph, x, y, scale, applyVM);
     78         return;
     79     }
     80 
     81     Run& run = fRuns[runIndex];
     82     GrMaskFormat format = glyph->fMaskFormat;
     83 
     84     Run::SubRunInfo* subRun = &run.fSubRunInfo.back();
     85     if (run.fInitialized && subRun->maskFormat() != format) {
     86         subRun = &run.push_back();
     87         subRun->setStrike(strike);
     88     } else if (!run.fInitialized) {
     89         subRun->setStrike(strike);
     90     }
     91 
     92     run.fInitialized = true;
     93 
     94     size_t vertexStride = GetVertexStride(format);
     95 
     96     subRun->setMaskFormat(format);
     97 
     98     subRun->joinGlyphBounds(positions);
     99     subRun->setColor(color);
    100 
    101     intptr_t vertex = reinterpret_cast<intptr_t>(this->fVertices + subRun->vertexEndIndex());
    102 
    103     if (kARGB_GrMaskFormat != glyph->fMaskFormat) {
    104         // V0
    105         SkPoint* position = reinterpret_cast<SkPoint*>(vertex);
    106         position->set(positions.fLeft, positions.fTop);
    107         SkColor* colorPtr = reinterpret_cast<SkColor*>(vertex + sizeof(SkPoint));
    108         *colorPtr = color;
    109         vertex += vertexStride;
    110 
    111         // V1
    112         position = reinterpret_cast<SkPoint*>(vertex);
    113         position->set(positions.fLeft, positions.fBottom);
    114         colorPtr = reinterpret_cast<SkColor*>(vertex + sizeof(SkPoint));
    115         *colorPtr = color;
    116         vertex += vertexStride;
    117 
    118         // V2
    119         position = reinterpret_cast<SkPoint*>(vertex);
    120         position->set(positions.fRight, positions.fBottom);
    121         colorPtr = reinterpret_cast<SkColor*>(vertex + sizeof(SkPoint));
    122         *colorPtr = color;
    123         vertex += vertexStride;
    124 
    125         // V3
    126         position = reinterpret_cast<SkPoint*>(vertex);
    127         position->set(positions.fRight, positions.fTop);
    128         colorPtr = reinterpret_cast<SkColor*>(vertex + sizeof(SkPoint));
    129         *colorPtr = color;
    130     } else {
    131         // V0
    132         SkPoint* position = reinterpret_cast<SkPoint*>(vertex);
    133         position->set(positions.fLeft, positions.fTop);
    134         vertex += vertexStride;
    135 
    136         // V1
    137         position = reinterpret_cast<SkPoint*>(vertex);
    138         position->set(positions.fLeft, positions.fBottom);
    139         vertex += vertexStride;
    140 
    141         // V2
    142         position = reinterpret_cast<SkPoint*>(vertex);
    143         position->set(positions.fRight, positions.fBottom);
    144         vertex += vertexStride;
    145 
    146         // V3
    147         position = reinterpret_cast<SkPoint*>(vertex);
    148         position->set(positions.fRight, positions.fTop);
    149     }
    150     subRun->appendVertices(vertexStride);
    151     fGlyphs[subRun->glyphEndIndex()] = glyph;
    152     subRun->glyphAppended();
    153 }
    154 
    155 void GrAtlasTextBlob::appendLargeGlyph(GrGlyph* glyph, GrFontScaler* scaler, const SkGlyph& skGlyph,
    156                                        SkScalar x, SkScalar y, SkScalar scale, bool applyVM) {
    157     if (nullptr == glyph->fPath) {
    158         const SkPath* glyphPath = scaler->getGlyphPath(skGlyph);
    159         if (!glyphPath) {
    160             return;
    161         }
    162 
    163         glyph->fPath = new SkPath(*glyphPath);
    164     }
    165     fBigGlyphs.push_back(GrAtlasTextBlob::BigGlyph(*glyph->fPath, x, y, scale, applyVM));
    166 }
    167 
    168 bool GrAtlasTextBlob::mustRegenerate(const SkPaint& paint,
    169                                      GrColor color, const SkMaskFilter::BlurRec& blurRec,
    170                                      const SkMatrix& viewMatrix, SkScalar x, SkScalar y) {
    171     // If we have LCD text then our canonical color will be set to transparent, in this case we have
    172     // to regenerate the blob on any color change
    173     // We use the grPaint to get any color filter effects
    174     if (fKey.fCanonicalColor == SK_ColorTRANSPARENT &&
    175         fPaintColor != color) {
    176         return true;
    177     }
    178 
    179     if (fInitialViewMatrix.hasPerspective() != viewMatrix.hasPerspective()) {
    180         return true;
    181     }
    182 
    183     if (fInitialViewMatrix.hasPerspective() && !fInitialViewMatrix.cheapEqualTo(viewMatrix)) {
    184         return true;
    185     }
    186 
    187     // We only cache one masked version
    188     if (fKey.fHasBlur &&
    189         (fBlurRec.fSigma != blurRec.fSigma ||
    190          fBlurRec.fStyle != blurRec.fStyle ||
    191          fBlurRec.fQuality != blurRec.fQuality)) {
    192         return true;
    193     }
    194 
    195     // Similarly, we only cache one version for each style
    196     if (fKey.fStyle != SkPaint::kFill_Style &&
    197         (fStrokeInfo.fFrameWidth != paint.getStrokeWidth() ||
    198          fStrokeInfo.fMiterLimit != paint.getStrokeMiter() ||
    199          fStrokeInfo.fJoin != paint.getStrokeJoin())) {
    200         return true;
    201     }
    202 
    203     // Mixed blobs must be regenerated.  We could probably figure out a way to do integer scrolls
    204     // for mixed blobs if this becomes an issue.
    205     if (this->hasBitmap() && this->hasDistanceField()) {
    206         // Identical viewmatrices and we can reuse in all cases
    207         if (fInitialViewMatrix.cheapEqualTo(viewMatrix) && x == fInitialX && y == fInitialY) {
    208             return false;
    209         }
    210         return true;
    211     }
    212 
    213     if (this->hasBitmap()) {
    214         if (fInitialViewMatrix.getScaleX() != viewMatrix.getScaleX() ||
    215             fInitialViewMatrix.getScaleY() != viewMatrix.getScaleY() ||
    216             fInitialViewMatrix.getSkewX() != viewMatrix.getSkewX() ||
    217             fInitialViewMatrix.getSkewY() != viewMatrix.getSkewY()) {
    218             return true;
    219         }
    220 
    221         // We can update the positions in the cachedtextblobs without regenerating the whole blob,
    222         // but only for integer translations.
    223         // This cool bit of math will determine the necessary translation to apply to the already
    224         // generated vertex coordinates to move them to the correct position
    225         SkScalar transX = viewMatrix.getTranslateX() +
    226                           viewMatrix.getScaleX() * (x - fInitialX) +
    227                           viewMatrix.getSkewX() * (y - fInitialY) -
    228                           fInitialViewMatrix.getTranslateX();
    229         SkScalar transY = viewMatrix.getTranslateY() +
    230                           viewMatrix.getSkewY() * (x - fInitialX) +
    231                           viewMatrix.getScaleY() * (y - fInitialY) -
    232                           fInitialViewMatrix.getTranslateY();
    233         if (!SkScalarIsInt(transX) || !SkScalarIsInt(transY)) {
    234             return true;
    235         }
    236     } else if (this->hasDistanceField()) {
    237         // A scale outside of [blob.fMaxMinScale, blob.fMinMaxScale] would result in a different
    238         // distance field being generated, so we have to regenerate in those cases
    239         SkScalar newMaxScale = viewMatrix.getMaxScale();
    240         SkScalar oldMaxScale = fInitialViewMatrix.getMaxScale();
    241         SkScalar scaleAdjust = newMaxScale / oldMaxScale;
    242         if (scaleAdjust < fMaxMinScale || scaleAdjust > fMinMaxScale) {
    243             return true;
    244         }
    245     }
    246 
    247     // It is possible that a blob has neither distanceField nor bitmaptext.  This is in the case
    248     // when all of the runs inside the blob are drawn as paths.  In this case, we always regenerate
    249     // the blob anyways at flush time, so no need to regenerate explicitly
    250     return false;
    251 }
    252 
    253 inline GrDrawBatch* GrAtlasTextBlob::createBatch(
    254                                               const Run::SubRunInfo& info,
    255                                               int glyphCount, int run, int subRun,
    256                                               const SkMatrix& viewMatrix, SkScalar x, SkScalar y,
    257                                               GrColor color,
    258                                               const SkPaint& skPaint, const SkSurfaceProps& props,
    259                                               const GrDistanceFieldAdjustTable* distanceAdjustTable,
    260                                               GrBatchFontCache* cache) {
    261     GrMaskFormat format = info.maskFormat();
    262     GrColor subRunColor;
    263     if (kARGB_GrMaskFormat == format) {
    264         uint8_t paintAlpha = skPaint.getAlpha();
    265         subRunColor = SkColorSetARGB(paintAlpha, paintAlpha, paintAlpha, paintAlpha);
    266     } else {
    267         subRunColor = color;
    268     }
    269 
    270     GrAtlasTextBatch* batch;
    271     if (info.drawAsDistanceFields()) {
    272         SkColor filteredColor;
    273         SkColorFilter* colorFilter = skPaint.getColorFilter();
    274         if (colorFilter) {
    275             filteredColor = colorFilter->filterColor(skPaint.getColor());
    276         } else {
    277             filteredColor = skPaint.getColor();
    278         }
    279         bool useBGR = SkPixelGeometryIsBGR(props.pixelGeometry());
    280         batch = GrAtlasTextBatch::CreateDistanceField(glyphCount, cache,
    281                                                       distanceAdjustTable, filteredColor,
    282                                                       info.hasUseLCDText(), useBGR);
    283     } else {
    284         batch = GrAtlasTextBatch::CreateBitmap(format, glyphCount, cache);
    285     }
    286     GrAtlasTextBatch::Geometry& geometry = batch->geometry();
    287     geometry.fViewMatrix = viewMatrix;
    288     geometry.fBlob = SkRef(this);
    289     geometry.fRun = run;
    290     geometry.fSubRun = subRun;
    291     geometry.fColor = subRunColor;
    292     geometry.fX = x;
    293     geometry.fY = y;
    294     batch->init();
    295 
    296     return batch;
    297 }
    298 
    299 inline
    300 void GrAtlasTextBlob::flushRun(GrDrawContext* dc, GrPipelineBuilder* pipelineBuilder,
    301                                int run, const SkMatrix& viewMatrix, SkScalar x, SkScalar y,
    302                                GrColor color,
    303                                const SkPaint& skPaint, const SkSurfaceProps& props,
    304                                const GrDistanceFieldAdjustTable* distanceAdjustTable,
    305                                GrBatchFontCache* cache) {
    306     for (int subRun = 0; subRun < fRuns[run].fSubRunInfo.count(); subRun++) {
    307         const Run::SubRunInfo& info = fRuns[run].fSubRunInfo[subRun];
    308         int glyphCount = info.glyphCount();
    309         if (0 == glyphCount) {
    310             continue;
    311         }
    312 
    313         SkAutoTUnref<GrDrawBatch> batch(this->createBatch(info, glyphCount, run,
    314                                                           subRun, viewMatrix, x, y, color,
    315                                                           skPaint, props,
    316                                                           distanceAdjustTable, cache));
    317         dc->drawBatch(pipelineBuilder, batch);
    318     }
    319 }
    320 
    321 static void calculate_translation(bool applyVM,
    322                                   const SkMatrix& newViewMatrix, SkScalar newX, SkScalar newY,
    323                                   const SkMatrix& currentViewMatrix, SkScalar currentX,
    324                                   SkScalar currentY, SkScalar* transX, SkScalar* transY) {
    325     if (applyVM) {
    326         *transX = newViewMatrix.getTranslateX() +
    327                   newViewMatrix.getScaleX() * (newX - currentX) +
    328                   newViewMatrix.getSkewX() * (newY - currentY) -
    329                   currentViewMatrix.getTranslateX();
    330 
    331         *transY = newViewMatrix.getTranslateY() +
    332                   newViewMatrix.getSkewY() * (newX - currentX) +
    333                   newViewMatrix.getScaleY() * (newY - currentY) -
    334                   currentViewMatrix.getTranslateY();
    335     } else {
    336         *transX = newX - currentX;
    337         *transY = newY - currentY;
    338     }
    339 }
    340 
    341 
    342 void GrAtlasTextBlob::flushBigGlyphs(GrContext* context, GrDrawContext* dc,
    343                                      const GrClip& clip, const SkPaint& skPaint,
    344                                      const SkMatrix& viewMatrix, SkScalar x, SkScalar y,
    345                                      const SkIRect& clipBounds) {
    346     SkScalar transX, transY;
    347     for (int i = 0; i < fBigGlyphs.count(); i++) {
    348         GrAtlasTextBlob::BigGlyph& bigGlyph = fBigGlyphs[i];
    349         calculate_translation(bigGlyph.fApplyVM, viewMatrix, x, y,
    350                               fInitialViewMatrix, fInitialX, fInitialY, &transX, &transY);
    351         SkMatrix ctm;
    352         ctm.setScale(bigGlyph.fScale, bigGlyph.fScale);
    353         ctm.postTranslate(bigGlyph.fX + transX, bigGlyph.fY + transY);
    354         if (bigGlyph.fApplyVM) {
    355             ctm.postConcat(viewMatrix);
    356         }
    357 
    358         GrBlurUtils::drawPathWithMaskFilter(context, dc, clip, bigGlyph.fPath,
    359                                             skPaint, ctm, nullptr, clipBounds, false);
    360     }
    361 }
    362 
    363 void GrAtlasTextBlob::flushRunAsPaths(GrContext* context, GrDrawContext* dc,
    364                                       const SkSurfaceProps& props,
    365                                       const SkTextBlobRunIterator& it,
    366                                       const GrClip& clip, const SkPaint& skPaint,
    367                                       SkDrawFilter* drawFilter, const SkMatrix& viewMatrix,
    368                                       const SkIRect& clipBounds, SkScalar x, SkScalar y) {
    369     SkPaint runPaint = skPaint;
    370 
    371     size_t textLen = it.glyphCount() * sizeof(uint16_t);
    372     const SkPoint& offset = it.offset();
    373 
    374     it.applyFontToPaint(&runPaint);
    375 
    376     if (drawFilter && !drawFilter->filter(&runPaint, SkDrawFilter::kText_Type)) {
    377         return;
    378     }
    379 
    380     runPaint.setFlags(GrTextUtils::FilterTextFlags(props, runPaint));
    381 
    382     switch (it.positioning()) {
    383         case SkTextBlob::kDefault_Positioning:
    384             GrTextUtils::DrawTextAsPath(context, dc, clip, runPaint, viewMatrix,
    385                                         (const char *)it.glyphs(),
    386                                         textLen, x + offset.x(), y + offset.y(), clipBounds);
    387             break;
    388         case SkTextBlob::kHorizontal_Positioning:
    389             GrTextUtils::DrawPosTextAsPath(context, dc, props, clip, runPaint, viewMatrix,
    390                                            (const char*)it.glyphs(),
    391                                            textLen, it.pos(), 1, SkPoint::Make(x, y + offset.y()),
    392                                            clipBounds);
    393             break;
    394         case SkTextBlob::kFull_Positioning:
    395             GrTextUtils::DrawPosTextAsPath(context, dc, props, clip, runPaint, viewMatrix,
    396                                            (const char*)it.glyphs(),
    397                                            textLen, it.pos(), 2, SkPoint::Make(x, y), clipBounds);
    398             break;
    399     }
    400 }
    401 
    402 void GrAtlasTextBlob::flushCached(GrContext* context,
    403                                   GrDrawContext* dc,
    404                                   const SkTextBlob* blob,
    405                                   const SkSurfaceProps& props,
    406                                   const GrDistanceFieldAdjustTable* distanceAdjustTable,
    407                                   const SkPaint& skPaint,
    408                                   const GrPaint& grPaint,
    409                                   SkDrawFilter* drawFilter,
    410                                   const GrClip& clip,
    411                                   const SkMatrix& viewMatrix,
    412                                   const SkIRect& clipBounds,
    413                                   SkScalar x, SkScalar y) {
    414     // We loop through the runs of the blob, flushing each.  If any run is too large, then we flush
    415     // it as paths
    416     GrPipelineBuilder pipelineBuilder(grPaint, dc->accessRenderTarget(), clip);
    417 
    418     GrColor color = grPaint.getColor();
    419 
    420     SkTextBlobRunIterator it(blob);
    421     for (int run = 0; !it.done(); it.next(), run++) {
    422         if (fRuns[run].fDrawAsPaths) {
    423             this->flushRunAsPaths(context, dc, props, it, clip, skPaint,
    424                                   drawFilter, viewMatrix, clipBounds, x, y);
    425             continue;
    426         }
    427         this->flushRun(dc, &pipelineBuilder, run, viewMatrix, x, y, color, skPaint, props,
    428                        distanceAdjustTable, context->getBatchFontCache());
    429     }
    430 
    431     // Now flush big glyphs
    432     this->flushBigGlyphs(context, dc, clip, skPaint, viewMatrix, x, y, clipBounds);
    433 }
    434 
    435 void GrAtlasTextBlob::flushThrowaway(GrContext* context,
    436                                      GrDrawContext* dc,
    437                                      const SkSurfaceProps& props,
    438                                      const GrDistanceFieldAdjustTable* distanceAdjustTable,
    439                                      const SkPaint& skPaint,
    440                                      const GrPaint& grPaint,
    441                                      const GrClip& clip,
    442                                      const SkMatrix& viewMatrix,
    443                                      const SkIRect& clipBounds,
    444                                      SkScalar x, SkScalar y) {
    445     GrPipelineBuilder pipelineBuilder(grPaint, dc->accessRenderTarget(), clip);
    446 
    447     GrColor color = grPaint.getColor();
    448     for (int run = 0; run < fRunCount; run++) {
    449         this->flushRun(dc, &pipelineBuilder, run, viewMatrix, x, y, color, skPaint, props,
    450                        distanceAdjustTable, context->getBatchFontCache());
    451     }
    452 
    453     // Now flush big glyphs
    454     this->flushBigGlyphs(context, dc, clip, skPaint, viewMatrix, x, y, clipBounds);
    455 }
    456 
    457 GrDrawBatch* GrAtlasTextBlob::test_createBatch(
    458                                               int glyphCount, int run, int subRun,
    459                                               const SkMatrix& viewMatrix, SkScalar x, SkScalar y,
    460                                               GrColor color,
    461                                               const SkPaint& skPaint, const SkSurfaceProps& props,
    462                                               const GrDistanceFieldAdjustTable* distanceAdjustTable,
    463                                               GrBatchFontCache* cache) {
    464     const GrAtlasTextBlob::Run::SubRunInfo& info = fRuns[run].fSubRunInfo[subRun];
    465     return this->createBatch(info, glyphCount, run, subRun, viewMatrix, x, y, color, skPaint,
    466                              props, distanceAdjustTable, cache);
    467 }
    468 
    469 void GrAtlasTextBlob::AssertEqual(const GrAtlasTextBlob& l, const GrAtlasTextBlob& r) {
    470     SkASSERT_RELEASE(l.fSize == r.fSize);
    471     SkASSERT_RELEASE(l.fPool == r.fPool);
    472 
    473     SkASSERT_RELEASE(l.fBlurRec.fSigma == r.fBlurRec.fSigma);
    474     SkASSERT_RELEASE(l.fBlurRec.fStyle == r.fBlurRec.fStyle);
    475     SkASSERT_RELEASE(l.fBlurRec.fQuality == r.fBlurRec.fQuality);
    476 
    477     SkASSERT_RELEASE(l.fStrokeInfo.fFrameWidth == r.fStrokeInfo.fFrameWidth);
    478     SkASSERT_RELEASE(l.fStrokeInfo.fMiterLimit == r.fStrokeInfo.fMiterLimit);
    479     SkASSERT_RELEASE(l.fStrokeInfo.fJoin == r.fStrokeInfo.fJoin);
    480 
    481     SkASSERT_RELEASE(l.fBigGlyphs.count() == r.fBigGlyphs.count());
    482     for (int i = 0; i < l.fBigGlyphs.count(); i++) {
    483         const BigGlyph& lBigGlyph = l.fBigGlyphs[i];
    484         const BigGlyph& rBigGlyph = r.fBigGlyphs[i];
    485 
    486         SkASSERT_RELEASE(lBigGlyph.fPath == rBigGlyph.fPath);
    487         // We can't assert that these have the same translations
    488     }
    489 
    490     SkASSERT_RELEASE(l.fKey == r.fKey);
    491     //SkASSERT_RELEASE(l.fPaintColor == r.fPaintColor); // Colors might not actually be identical
    492     SkASSERT_RELEASE(l.fMaxMinScale == r.fMaxMinScale);
    493     SkASSERT_RELEASE(l.fMinMaxScale == r.fMinMaxScale);
    494     SkASSERT_RELEASE(l.fTextType == r.fTextType);
    495 
    496     SkASSERT_RELEASE(l.fRunCount == r.fRunCount);
    497     for (int i = 0; i < l.fRunCount; i++) {
    498         const Run& lRun = l.fRuns[i];
    499         const Run& rRun = r.fRuns[i];
    500 
    501         if (lRun.fTypeface.get()) {
    502             SkASSERT_RELEASE(rRun.fTypeface.get());
    503             SkASSERT_RELEASE(SkTypeface::Equal(lRun.fTypeface, rRun.fTypeface));
    504         } else {
    505             SkASSERT_RELEASE(!rRun.fTypeface.get());
    506         }
    507 
    508 
    509         SkASSERT_RELEASE(lRun.fDescriptor.getDesc());
    510         SkASSERT_RELEASE(rRun.fDescriptor.getDesc());
    511         SkASSERT_RELEASE(lRun.fDescriptor.getDesc()->equals(*rRun.fDescriptor.getDesc()));
    512 
    513         if (lRun.fOverrideDescriptor.get()) {
    514             SkASSERT_RELEASE(lRun.fOverrideDescriptor->getDesc());
    515             SkASSERT_RELEASE(rRun.fOverrideDescriptor.get() && rRun.fOverrideDescriptor->getDesc());
    516             SkASSERT_RELEASE(lRun.fOverrideDescriptor->getDesc()->equals(
    517                     *rRun.fOverrideDescriptor->getDesc()));
    518         } else {
    519             SkASSERT_RELEASE(!rRun.fOverrideDescriptor.get());
    520         }
    521 
    522         // color can be changed
    523         //SkASSERT(lRun.fColor == rRun.fColor);
    524         SkASSERT_RELEASE(lRun.fInitialized == rRun.fInitialized);
    525         SkASSERT_RELEASE(lRun.fDrawAsPaths == rRun.fDrawAsPaths);
    526 
    527         SkASSERT_RELEASE(lRun.fSubRunInfo.count() == rRun.fSubRunInfo.count());
    528         for(int j = 0; j < lRun.fSubRunInfo.count(); j++) {
    529             const Run::SubRunInfo& lSubRun = lRun.fSubRunInfo[j];
    530             const Run::SubRunInfo& rSubRun = rRun.fSubRunInfo[j];
    531 
    532             // TODO we can do this check, but we have to apply the VM to the old vertex bounds
    533             //SkASSERT_RELEASE(lSubRun.vertexBounds() == rSubRun.vertexBounds());
    534 
    535             if (lSubRun.strike()) {
    536                 SkASSERT_RELEASE(rSubRun.strike());
    537                 SkASSERT_RELEASE(GrBatchTextStrike::GetKey(*lSubRun.strike()) ==
    538                                  GrBatchTextStrike::GetKey(*rSubRun.strike()));
    539 
    540             } else {
    541                 SkASSERT_RELEASE(!rSubRun.strike());
    542             }
    543 
    544             SkASSERT_RELEASE(lSubRun.vertexStartIndex() == rSubRun.vertexStartIndex());
    545             SkASSERT_RELEASE(lSubRun.vertexEndIndex() == rSubRun.vertexEndIndex());
    546             SkASSERT_RELEASE(lSubRun.glyphStartIndex() == rSubRun.glyphStartIndex());
    547             SkASSERT_RELEASE(lSubRun.glyphEndIndex() == rSubRun.glyphEndIndex());
    548             SkASSERT_RELEASE(lSubRun.maskFormat() == rSubRun.maskFormat());
    549             SkASSERT_RELEASE(lSubRun.drawAsDistanceFields() == rSubRun.drawAsDistanceFields());
    550             SkASSERT_RELEASE(lSubRun.hasUseLCDText() == rSubRun.hasUseLCDText());
    551         }
    552     }
    553 }
    554 
    555 void GrAtlasTextBlob::Run::SubRunInfo::computeTranslation(const SkMatrix& viewMatrix,
    556                                                           SkScalar x, SkScalar y, SkScalar* transX,
    557                                                           SkScalar* transY) {
    558     calculate_translation(!this->drawAsDistanceFields(), viewMatrix, x, y,
    559                           fCurrentViewMatrix, fX, fY, transX, transY);
    560     fCurrentViewMatrix = viewMatrix;
    561     fX = x;
    562     fY = y;
    563 }
    564