| /* |
| * 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 "GrAtlasTextOp.h" |
| |
| #include "GrContext.h" |
| #include "GrOpFlushState.h" |
| #include "GrResourceProvider.h" |
| |
| #include "SkGlyphCache.h" |
| #include "SkMathPriv.h" |
| |
| #include "effects/GrBitmapTextGeoProc.h" |
| #include "effects/GrDistanceFieldGeoProc.h" |
| #include "text/GrAtlasGlyphCache.h" |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| static const int kDistanceAdjustLumShift = 5; |
| |
| SkString GrAtlasTextOp::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 += fProcessors.dumpProcessors(); |
| str += INHERITED::dumpInfo(); |
| return str; |
| } |
| |
| GrDrawOp::FixedFunctionFlags GrAtlasTextOp::fixedFunctionFlags() const { |
| return FixedFunctionFlags::kNone; |
| } |
| |
| GrDrawOp::RequiresDstTexture GrAtlasTextOp::finalize(const GrCaps& caps, |
| const GrAppliedClip* clip) { |
| GrProcessorAnalysisCoverage coverage; |
| GrProcessorAnalysisColor color; |
| if (kColorBitmapMask_MaskType == fMaskType) { |
| color.setToUnknown(); |
| } else { |
| color.setToConstant(fColor); |
| } |
| switch (fMaskType) { |
| case kGrayscaleCoverageMask_MaskType: |
| case kAliasedDistanceField_MaskType: |
| case kGrayscaleDistanceField_MaskType: |
| coverage = GrProcessorAnalysisCoverage::kSingleChannel; |
| break; |
| case kLCDCoverageMask_MaskType: |
| case kLCDDistanceField_MaskType: |
| case kLCDBGRDistanceField_MaskType: |
| coverage = GrProcessorAnalysisCoverage::kLCD; |
| break; |
| case kColorBitmapMask_MaskType: |
| coverage = GrProcessorAnalysisCoverage::kNone; |
| break; |
| } |
| auto analysis = fProcessors.finalize(color, coverage, clip, false, caps, &fColor); |
| fUsesLocalCoords = analysis.usesLocalCoords(); |
| fCanCombineOnTouchOrOverlap = |
| !analysis.requiresDstTexture() && |
| !(fProcessors.xferProcessor() && fProcessors.xferProcessor()->xferBarrierType(caps)); |
| return analysis.requiresDstTexture() ? RequiresDstTexture::kYes : RequiresDstTexture::kNo; |
| } |
| |
| void GrAtlasTextOp::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; |
| } |
| |
| sk_sp<GrTextureProxy> proxy = fFontCache->getProxy(this->maskFormat()); |
| if (!proxy) { |
| SkDebugf("Could not allocate backing texture for atlas\n"); |
| return; |
| } |
| |
| GrMaskFormat maskFormat = this->maskFormat(); |
| |
| FlushInfo flushInfo; |
| flushInfo.fPipeline = target->makePipeline(fSRGBFlags, &fProcessors); |
| if (this->usesDistanceFields()) { |
| flushInfo.fGeometryProcessor = |
| this->setupDfProcessor(this->viewMatrix(), |
| fLuminanceColor, this->color(), std::move(proxy)); |
| } else { |
| GrSamplerParams params(SkShader::kClamp_TileMode, GrSamplerParams::kNone_FilterMode); |
| flushInfo.fGeometryProcessor = |
| GrBitmapTextGeoProc::Make(this->color(), std::move(proxy), 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->regenInOp(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); |
| |
| currVertex += byteCount; |
| } |
| |
| this->flush(target, &flushInfo); |
| } |
| |
| void GrAtlasTextOp::flush(GrMeshDrawOp::Target* target, FlushInfo* flushInfo) const { |
| GrMesh mesh(GrPrimitiveType::kTriangles); |
| int maxGlyphsPerDraw = |
| static_cast<int>(flushInfo->fIndexBuffer->gpuMemorySize() / sizeof(uint16_t) / 6); |
| mesh.setIndexedPatterned(flushInfo->fIndexBuffer.get(), kIndicesPerGlyph, kVerticesPerGlyph, |
| flushInfo->fGlyphsToFlush, maxGlyphsPerDraw); |
| mesh.setVertexData(flushInfo->fVertexBuffer.get(), flushInfo->fVertexOffset); |
| target->draw(flushInfo->fGeometryProcessor.get(), flushInfo->fPipeline, mesh); |
| flushInfo->fVertexOffset += kVerticesPerGlyph * flushInfo->fGlyphsToFlush; |
| flushInfo->fGlyphsToFlush = 0; |
| } |
| |
| bool GrAtlasTextOp::onCombineIfPossible(GrOp* t, const GrCaps& caps) { |
| GrAtlasTextOp* that = t->cast<GrAtlasTextOp>(); |
| if (fProcessors != that->fProcessors) { |
| return false; |
| } |
| |
| if (!fCanCombineOnTouchOrOverlap && GrRectsTouchOrOverlap(this->bounds(), that->bounds())) { |
| 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 (fLuminanceColor != that->fLuminanceColor) { |
| return false; |
| } |
| } |
| |
| 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); |
| } |
| |
| // We steal the ref on the blobs from the other AtlasTextOp and set its count to 0 so that |
| // it doesn't try to unref them. |
| memcpy(&fGeoData[fGeoCount], that->fGeoData.get(), that->fGeoCount * sizeof(Geometry)); |
| #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); |
| return true; |
| } |
| |
| // TODO just use class params |
| // TODO trying to figure out why lcd is so whack |
| sk_sp<GrGeometryProcessor> GrAtlasTextOp::setupDfProcessor(const SkMatrix& viewMatrix, |
| SkColor luminanceColor, |
| GrColor color, |
| sk_sp<GrTextureProxy> proxy) const { |
| GrSamplerParams params(SkShader::kClamp_TileMode, GrSamplerParams::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; |
| flags |= (kAliasedDistanceField_MaskType == fMaskType) ? kAliased_DistanceFieldEffectFlag : 0; |
| |
| // see if we need to create a new effect |
| if (isLCD) { |
| flags |= kUseLCD_DistanceFieldEffectFlag; |
| flags |= (kLCDBGRDistanceField_MaskType == fMaskType) ? kBGR_DistanceFieldEffectFlag : 0; |
| |
| float redCorrection = fDistanceAdjustTable->getAdjustment( |
| SkColorGetR(luminanceColor) >> kDistanceAdjustLumShift, |
| fUseGammaCorrectDistanceTable); |
| float greenCorrection = fDistanceAdjustTable->getAdjustment( |
| SkColorGetG(luminanceColor) >> kDistanceAdjustLumShift, |
| fUseGammaCorrectDistanceTable); |
| float blueCorrection = fDistanceAdjustTable->getAdjustment( |
| SkColorGetB(luminanceColor) >> kDistanceAdjustLumShift, |
| fUseGammaCorrectDistanceTable); |
| GrDistanceFieldLCDTextGeoProc::DistanceAdjust widthAdjust = |
| GrDistanceFieldLCDTextGeoProc::DistanceAdjust::Make( |
| redCorrection, greenCorrection, blueCorrection); |
| |
| return GrDistanceFieldLCDTextGeoProc::Make(color, viewMatrix, std::move(proxy), params, |
| widthAdjust, flags, this->usesLocalCoords()); |
| } else { |
| #ifdef SK_GAMMA_APPLY_TO_A8 |
| float correction = 0; |
| if (kAliasedDistanceField_MaskType != fMaskType) { |
| U8CPU lum = SkColorSpaceLuminance::computeLuminance(SK_GAMMA_EXPONENT, luminanceColor); |
| correction = fDistanceAdjustTable->getAdjustment(lum >> kDistanceAdjustLumShift, |
| fUseGammaCorrectDistanceTable); |
| } |
| return GrDistanceFieldA8TextGeoProc::Make(color, viewMatrix, std::move(proxy), params, |
| correction, flags, this->usesLocalCoords()); |
| #else |
| return GrDistanceFieldA8TextGeoProc::Make(color, |
| viewMatrix, std::move(proxy), |
| params, flags, this->usesLocalCoords()); |
| #endif |
| } |
| } |
| |
| void GrBlobRegenHelper::flush() { fOp->flush(fTarget, fFlushInfo); } |
