| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "GrAtlasTextBatch.h" |
| |
| #include "GrBatchFlushState.h" |
| #include "GrResourceProvider.h" |
| |
| #include "SkGlyphCache.h" |
| |
| #include "effects/GrBitmapTextGeoProc.h" |
| #include "effects/GrDistanceFieldGeoProc.h" |
| #include "text/GrBatchFontCache.h" |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| static inline GrColor skcolor_to_grcolor_nopremultiply(SkColor c) { |
| unsigned r = SkColorGetR(c); |
| unsigned g = SkColorGetG(c); |
| unsigned b = SkColorGetB(c); |
| return GrColorPackRGBA(r, g, b, 0xff); |
| } |
| |
| static const int kDistanceAdjustLumShift = 5; |
| |
| SkString GrAtlasTextBatch::dumpInfo() const { |
| SkString str; |
| |
| for (int i = 0; i < fGeoCount; ++i) { |
| str.appendf("%d: Color: 0x%08x Trans: %.2f,%.2f Runs: %d\n", |
| i, |
| fGeoData[i].fColor, |
| fGeoData[i].fX, |
| fGeoData[i].fY, |
| fGeoData[i].fBlob->runCount()); |
| } |
| |
| str.append(INHERITED::dumpInfo()); |
| return str; |
| } |
| |
| void GrAtlasTextBatch::computePipelineOptimizations(GrInitInvariantOutput* color, |
| GrInitInvariantOutput* coverage, |
| GrBatchToXPOverrides* overrides) const { |
| if (kColorBitmapMask_MaskType == fMaskType) { |
| color->setUnknownFourComponents(); |
| } else { |
| color->setKnownFourComponents(fBatch.fColor); |
| } |
| switch (fMaskType) { |
| case kGrayscaleDistanceField_MaskType: |
| case kGrayscaleCoverageMask_MaskType: |
| coverage->setUnknownSingleComponent(); |
| break; |
| case kLCDCoverageMask_MaskType: |
| case kLCDDistanceField_MaskType: |
| coverage->setUnknownOpaqueFourComponents(); |
| coverage->setUsingLCDCoverage(); |
| break; |
| case kColorBitmapMask_MaskType: |
| coverage->setKnownSingleComponent(0xff); |
| } |
| } |
| |
| void GrAtlasTextBatch::initBatchTracker(const GrXPOverridesForBatch& overrides) { |
| // Handle any color overrides |
| if (!overrides.readsColor()) { |
| fGeoData[0].fColor = GrColor_ILLEGAL; |
| } |
| overrides.getOverrideColorIfSet(&fGeoData[0].fColor); |
| |
| // setup batch properties |
| fBatch.fColorIgnored = !overrides.readsColor(); |
| fBatch.fColor = fGeoData[0].fColor; |
| fBatch.fUsesLocalCoords = overrides.readsLocalCoords(); |
| fBatch.fCoverageIgnored = !overrides.readsCoverage(); |
| } |
| |
| void GrAtlasTextBatch::onPrepareDraws(Target* target) const { |
| // if we have RGB, then we won't have any SkShaders so no need to use a localmatrix. |
| // TODO actually only invert if we don't have RGBA |
| SkMatrix localMatrix; |
| if (this->usesLocalCoords() && !this->viewMatrix().invert(&localMatrix)) { |
| SkDebugf("Cannot invert viewmatrix\n"); |
| return; |
| } |
| |
| GrTexture* texture = fFontCache->getTexture(this->maskFormat()); |
| if (!texture) { |
| SkDebugf("Could not allocate backing texture for atlas\n"); |
| return; |
| } |
| |
| GrMaskFormat maskFormat = this->maskFormat(); |
| |
| FlushInfo flushInfo; |
| if (this->usesDistanceFields()) { |
| flushInfo.fGeometryProcessor.reset( |
| this->setupDfProcessor(this->viewMatrix(), fFilteredColor, this->color(), texture)); |
| } else { |
| GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kNone_FilterMode); |
| flushInfo.fGeometryProcessor.reset( |
| GrBitmapTextGeoProc::Create(this->color(), |
| texture, |
| params, |
| maskFormat, |
| localMatrix, |
| this->usesLocalCoords())); |
| } |
| |
| flushInfo.fGlyphsToFlush = 0; |
| size_t vertexStride = flushInfo.fGeometryProcessor->getVertexStride(); |
| SkASSERT(vertexStride == GrAtlasTextBlob::GetVertexStride(maskFormat)); |
| |
| int glyphCount = this->numGlyphs(); |
| const GrBuffer* vertexBuffer; |
| |
| void* vertices = target->makeVertexSpace(vertexStride, |
| glyphCount * kVerticesPerGlyph, |
| &vertexBuffer, |
| &flushInfo.fVertexOffset); |
| flushInfo.fVertexBuffer.reset(SkRef(vertexBuffer)); |
| flushInfo.fIndexBuffer.reset(target->resourceProvider()->refQuadIndexBuffer()); |
| if (!vertices || !flushInfo.fVertexBuffer) { |
| SkDebugf("Could not allocate vertices\n"); |
| return; |
| } |
| |
| unsigned char* currVertex = reinterpret_cast<unsigned char*>(vertices); |
| |
| GrBlobRegenHelper helper(this, target, &flushInfo); |
| SkAutoGlyphCache glyphCache; |
| for (int i = 0; i < fGeoCount; i++) { |
| const Geometry& args = fGeoData[i]; |
| Blob* blob = args.fBlob; |
| size_t byteCount; |
| void* blobVertices; |
| int subRunGlyphCount; |
| blob->regenInBatch(target, fFontCache, &helper, args.fRun, args.fSubRun, &glyphCache, |
| vertexStride, args.fViewMatrix, args.fX, args.fY, args.fColor, |
| &blobVertices, &byteCount, &subRunGlyphCount); |
| |
| // now copy all vertices |
| memcpy(currVertex, blobVertices, byteCount); |
| |
| #ifdef SK_DEBUG |
| // bounds sanity check |
| SkRect rect; |
| rect.setLargestInverted(); |
| SkPoint* vertex = (SkPoint*) ((char*)blobVertices); |
| rect.growToInclude(vertex, vertexStride, kVerticesPerGlyph * subRunGlyphCount); |
| |
| if (this->usesDistanceFields()) { |
| args.fViewMatrix.mapRect(&rect); |
| } |
| // Allow for small numerical error in the bounds. |
| SkRect bounds = fBounds; |
| bounds.outset(0.001f, 0.001f); |
| SkASSERT(bounds.contains(rect)); |
| #endif |
| |
| currVertex += byteCount; |
| } |
| |
| this->flush(target, &flushInfo); |
| } |
| |
| void GrAtlasTextBatch::flush(GrVertexBatch::Target* target, FlushInfo* flushInfo) const { |
| GrMesh mesh; |
| int maxGlyphsPerDraw = |
| static_cast<int>(flushInfo->fIndexBuffer->gpuMemorySize() / sizeof(uint16_t) / 6); |
| mesh.initInstanced(kTriangles_GrPrimitiveType, flushInfo->fVertexBuffer, |
| flushInfo->fIndexBuffer, flushInfo->fVertexOffset, |
| kVerticesPerGlyph, kIndicesPerGlyph, flushInfo->fGlyphsToFlush, |
| maxGlyphsPerDraw); |
| target->draw(flushInfo->fGeometryProcessor, mesh); |
| flushInfo->fVertexOffset += kVerticesPerGlyph * flushInfo->fGlyphsToFlush; |
| flushInfo->fGlyphsToFlush = 0; |
| } |
| |
| bool GrAtlasTextBatch::onCombineIfPossible(GrBatch* t, const GrCaps& caps) { |
| GrAtlasTextBatch* that = t->cast<GrAtlasTextBatch>(); |
| if (!GrPipeline::CanCombine(*this->pipeline(), this->bounds(), *that->pipeline(), |
| that->bounds(), caps)) { |
| return false; |
| } |
| |
| if (fMaskType != that->fMaskType) { |
| return false; |
| } |
| |
| if (!this->usesDistanceFields()) { |
| if (kColorBitmapMask_MaskType == fMaskType && this->color() != that->color()) { |
| return false; |
| } |
| if (this->usesLocalCoords() && !this->viewMatrix().cheapEqualTo(that->viewMatrix())) { |
| return false; |
| } |
| } else { |
| if (!this->viewMatrix().cheapEqualTo(that->viewMatrix())) { |
| return false; |
| } |
| |
| if (fFilteredColor != that->fFilteredColor) { |
| return false; |
| } |
| |
| if (fUseBGR != that->fUseBGR) { |
| return false; |
| } |
| } |
| |
| fBatch.fNumGlyphs += that->numGlyphs(); |
| |
| // Reallocate space for geo data if necessary and then import that's geo data. |
| int newGeoCount = that->fGeoCount + fGeoCount; |
| // We assume (and here enforce) that the allocation size is the smallest power of two that |
| // is greater than or equal to the number of geometries (and at least |
| // kMinGeometryAllocated). |
| int newAllocSize = GrNextPow2(newGeoCount); |
| int currAllocSize = SkTMax<int>(kMinGeometryAllocated, GrNextPow2(fGeoCount)); |
| |
| if (newGeoCount > currAllocSize) { |
| fGeoData.realloc(newAllocSize); |
| } |
| |
| memcpy(&fGeoData[fGeoCount], that->fGeoData.get(), that->fGeoCount * sizeof(Geometry)); |
| // We steal the ref on the blobs from the other TextBatch and set its count to 0 so that |
| // it doesn't try to unref them. |
| #ifdef SK_DEBUG |
| for (int i = 0; i < that->fGeoCount; ++i) { |
| that->fGeoData.get()[i].fBlob = (Blob*)0x1; |
| } |
| #endif |
| that->fGeoCount = 0; |
| fGeoCount = newGeoCount; |
| |
| this->joinBounds(that->bounds()); |
| return true; |
| } |
| |
| // TODO just use class params |
| // TODO trying to figure out why lcd is so whack |
| GrGeometryProcessor* GrAtlasTextBatch::setupDfProcessor(const SkMatrix& viewMatrix, |
| SkColor filteredColor, |
| GrColor color, GrTexture* texture) const { |
| GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode); |
| bool isLCD = this->isLCD(); |
| // set up any flags |
| uint32_t flags = viewMatrix.isSimilarity() ? kSimilarity_DistanceFieldEffectFlag : 0; |
| flags |= viewMatrix.isScaleTranslate() ? kScaleOnly_DistanceFieldEffectFlag : 0; |
| flags |= fUseGammaCorrectDistanceTable ? kGammaCorrect_DistanceFieldEffectFlag : 0; |
| |
| // see if we need to create a new effect |
| if (isLCD) { |
| flags |= kUseLCD_DistanceFieldEffectFlag; |
| flags |= fUseBGR ? kBGR_DistanceFieldEffectFlag : 0; |
| |
| GrColor colorNoPreMul = skcolor_to_grcolor_nopremultiply(filteredColor); |
| |
| float redCorrection = fDistanceAdjustTable->getAdjustment( |
| GrColorUnpackR(colorNoPreMul) >> kDistanceAdjustLumShift, |
| fUseGammaCorrectDistanceTable); |
| float greenCorrection = fDistanceAdjustTable->getAdjustment( |
| GrColorUnpackG(colorNoPreMul) >> kDistanceAdjustLumShift, |
| fUseGammaCorrectDistanceTable); |
| float blueCorrection = fDistanceAdjustTable->getAdjustment( |
| GrColorUnpackB(colorNoPreMul) >> kDistanceAdjustLumShift, |
| fUseGammaCorrectDistanceTable); |
| GrDistanceFieldLCDTextGeoProc::DistanceAdjust widthAdjust = |
| GrDistanceFieldLCDTextGeoProc::DistanceAdjust::Make(redCorrection, |
| greenCorrection, |
| blueCorrection); |
| |
| return GrDistanceFieldLCDTextGeoProc::Create(color, |
| viewMatrix, |
| texture, |
| params, |
| widthAdjust, |
| flags, |
| this->usesLocalCoords()); |
| } else { |
| #ifdef SK_GAMMA_APPLY_TO_A8 |
| U8CPU lum = SkColorSpaceLuminance::computeLuminance(SK_GAMMA_EXPONENT, filteredColor); |
| float correction = fDistanceAdjustTable->getAdjustment( |
| lum >> kDistanceAdjustLumShift, fUseGammaCorrectDistanceTable); |
| return GrDistanceFieldA8TextGeoProc::Create(color, |
| viewMatrix, |
| texture, |
| params, |
| correction, |
| flags, |
| this->usesLocalCoords()); |
| #else |
| return GrDistanceFieldA8TextGeoProc::Create(color, |
| viewMatrix, |
| texture, |
| params, |
| flags, |
| this->usesLocalCoords()); |
| #endif |
| } |
| |
| } |
| |
| void GrBlobRegenHelper::flush() { |
| fBatch->flush(fTarget, fFlushInfo); |
| } |