| /* |
| * 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 "src/gpu/ops/GrAtlasTextOp.h" |
| |
| #include "include/core/SkPoint3.h" |
| #include "include/gpu/GrRecordingContext.h" |
| #include "src/core/SkMathPriv.h" |
| #include "src/core/SkMatrixPriv.h" |
| #include "src/core/SkMatrixProvider.h" |
| #include "src/core/SkSpan.h" |
| #include "src/core/SkStrikeCache.h" |
| #include "src/gpu/GrCaps.h" |
| #include "src/gpu/GrMemoryPool.h" |
| #include "src/gpu/GrOpFlushState.h" |
| #include "src/gpu/GrRecordingContextPriv.h" |
| #include "src/gpu/GrRenderTargetContext.h" |
| #include "src/gpu/GrRenderTargetContextPriv.h" |
| #include "src/gpu/GrResourceProvider.h" |
| #include "src/gpu/SkGr.h" |
| #include "src/gpu/effects/GrBitmapTextGeoProc.h" |
| #include "src/gpu/effects/GrDistanceFieldGeoProc.h" |
| #include "src/gpu/ops/GrSimpleMeshDrawOpHelper.h" |
| #include "src/gpu/text/GrAtlasManager.h" |
| #include "src/gpu/text/GrDistanceFieldAdjustTable.h" |
| |
| #if GR_TEST_UTILS |
| #include "src/gpu/GrDrawOpTest.h" |
| #endif |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| GrAtlasTextOp::GrAtlasTextOp(MaskType maskType, |
| bool needsTransform, |
| int glyphCount, |
| SkRect deviceRect, |
| const Geometry& geo, |
| GrPaint&& paint) |
| : INHERITED{ClassID()} |
| , fProcessors(std::move(paint)) |
| , fNumGlyphs(glyphCount) |
| , fDFGPFlags(0) |
| , fMaskType(static_cast<uint32_t>(maskType)) |
| , fUsesLocalCoords(false) |
| , fNeedsGlyphTransform(needsTransform) |
| , fHasPerspective(needsTransform && geo.fDrawMatrix.hasPerspective()) |
| , fUseGammaCorrectDistanceTable(false) { |
| fGeometries.push_back(geo); |
| // We don't have tight bounds on the glyph paths in device space. For the purposes of bounds |
| // we treat this as a set of non-AA rects rendered with a texture. |
| this->setBounds(deviceRect, HasAABloat::kNo, IsHairline::kNo); |
| } |
| |
| GrAtlasTextOp::GrAtlasTextOp(MaskType maskType, |
| bool needsTransform, |
| int glyphCount, |
| SkRect deviceRect, |
| SkColor luminanceColor, |
| bool useGammaCorrectDistanceTable, |
| uint32_t DFGPFlags, |
| const Geometry& geo, |
| GrPaint&& paint) |
| : INHERITED{ClassID()} |
| , fProcessors(std::move(paint)) |
| , fNumGlyphs(glyphCount) |
| , fDFGPFlags(DFGPFlags) |
| , fMaskType(static_cast<uint32_t>(maskType)) |
| , fUsesLocalCoords(false) |
| , fNeedsGlyphTransform(needsTransform) |
| , fHasPerspective(needsTransform && geo.fDrawMatrix.hasPerspective()) |
| , fUseGammaCorrectDistanceTable(useGammaCorrectDistanceTable) |
| , fLuminanceColor(luminanceColor) { |
| fGeometries.push_back(geo); |
| // We don't have tight bounds on the glyph paths in device space. For the purposes of bounds |
| // we treat this as a set of non-AA rects rendered with a texture. |
| this->setBounds(deviceRect, HasAABloat::kNo, IsHairline::kNo); |
| } |
| |
| void GrAtlasTextOp::Geometry::fillVertexData(void *dst, int offset, int count) const { |
| fSubRun.fillVertexData(dst, offset, count, fColor.toBytes_RGBA(), |
| fDrawMatrix, fDrawOrigin, fClipRect); |
| } |
| |
| void GrAtlasTextOp::visitProxies(const VisitProxyFunc& func) const { |
| fProcessors.visitProxies(func); |
| } |
| |
| #if GR_TEST_UTILS |
| SkString GrAtlasTextOp::onDumpInfo() const { |
| SkString str; |
| int i = 0; |
| for (const auto& g : fGeometries.items()) { |
| str.appendf("%d: Color: 0x%08x Trans: %.2f,%.2f\n", |
| i++, |
| g.fColor.toBytes_RGBA(), |
| g.fDrawOrigin.x(), |
| g.fDrawOrigin.y()); |
| } |
| |
| str += fProcessors.dumpProcessors(); |
| return str; |
| } |
| #endif |
| |
| GrDrawOp::FixedFunctionFlags GrAtlasTextOp::fixedFunctionFlags() const { |
| return FixedFunctionFlags::kNone; |
| } |
| |
| GrProcessorSet::Analysis GrAtlasTextOp::finalize( |
| const GrCaps& caps, const GrAppliedClip* clip, bool hasMixedSampledCoverage, |
| GrClampType clampType) { |
| GrProcessorAnalysisCoverage coverage; |
| GrProcessorAnalysisColor color; |
| if (this->maskType() == MaskType::kColorBitmap) { |
| color.setToUnknown(); |
| } else { |
| // finalize() is called before any merging is done, so at this point there's at most one |
| // Geometry with a color. Later, for non-bitmap ops, we may have mixed colors. |
| color.setToConstant(fGeometries.front().fColor); |
| } |
| |
| switch (this->maskType()) { |
| case MaskType::kGrayscaleCoverage: |
| case MaskType::kAliasedDistanceField: |
| case MaskType::kGrayscaleDistanceField: |
| coverage = GrProcessorAnalysisCoverage::kSingleChannel; |
| break; |
| case MaskType::kLCDCoverage: |
| case MaskType::kLCDDistanceField: |
| case MaskType::kLCDBGRDistanceField: |
| coverage = GrProcessorAnalysisCoverage::kLCD; |
| break; |
| case MaskType::kColorBitmap: |
| coverage = GrProcessorAnalysisCoverage::kNone; |
| break; |
| } |
| |
| auto analysis = fProcessors.finalize( |
| color, coverage, clip, &GrUserStencilSettings::kUnused, hasMixedSampledCoverage, caps, |
| clampType, &fGeometries.front().fColor); |
| // TODO(michaelludwig): Once processor analysis can be done external to op creation/finalization |
| // the atlas op metadata can be fully const. This is okay for now since finalize() happens |
| // before the op is merged, so during combineIfPossible, metadata is effectively const. |
| fUsesLocalCoords = analysis.usesLocalCoords(); |
| return analysis; |
| } |
| |
| void GrAtlasTextOp::onPrepareDraws(Target* target) { |
| auto resourceProvider = target->resourceProvider(); |
| |
| // If we need local coordinates, compute an inverse view matrix. If this is solid color, the |
| // processor analysis will not require local coords and the GPs will skip local coords when |
| // the matrix is identity. When the shaders require local coords, combineIfPossible requires all |
| // all geometries to have same draw matrix. |
| SkMatrix localMatrix = SkMatrix::I(); |
| if (fUsesLocalCoords && !fGeometries.front().fDrawMatrix.invert(&localMatrix)) { |
| return; |
| } |
| |
| GrAtlasManager* atlasManager = target->atlasManager(); |
| |
| GrMaskFormat maskFormat = this->maskFormat(); |
| |
| unsigned int numActiveViews; |
| const GrSurfaceProxyView* views = atlasManager->getViews(maskFormat, &numActiveViews); |
| if (!views) { |
| SkDebugf("Could not allocate backing texture for atlas\n"); |
| return; |
| } |
| SkASSERT(views[0].proxy()); |
| |
| static constexpr int kMaxTextures = GrBitmapTextGeoProc::kMaxTextures; |
| static_assert(GrDistanceFieldA8TextGeoProc::kMaxTextures == kMaxTextures); |
| static_assert(GrDistanceFieldLCDTextGeoProc::kMaxTextures == kMaxTextures); |
| |
| auto primProcProxies = target->allocPrimProcProxyPtrs(kMaxTextures); |
| for (unsigned i = 0; i < numActiveViews; ++i) { |
| primProcProxies[i] = views[i].proxy(); |
| // This op does not know its atlas proxies when it is added to a GrOpsTasks, so the proxies |
| // don't get added during the visitProxies call. Thus we add them here. |
| target->sampledProxyArray()->push_back(views[i].proxy()); |
| } |
| |
| FlushInfo flushInfo; |
| flushInfo.fPrimProcProxies = primProcProxies; |
| flushInfo.fIndexBuffer = resourceProvider->refNonAAQuadIndexBuffer(); |
| |
| if (this->usesDistanceFields()) { |
| flushInfo.fGeometryProcessor = this->setupDfProcessor(target->allocator(), |
| *target->caps().shaderCaps(), |
| localMatrix, views, numActiveViews); |
| } else { |
| auto filter = fNeedsGlyphTransform ? GrSamplerState::Filter::kLinear |
| : GrSamplerState::Filter::kNearest; |
| // Bitmap text uses a single color, combineIfPossible ensures all geometries have the same |
| // color, so we can use the first's without worry. |
| flushInfo.fGeometryProcessor = GrBitmapTextGeoProc::Make( |
| target->allocator(), *target->caps().shaderCaps(), fGeometries.front().fColor, |
| false, views, numActiveViews, filter, maskFormat, localMatrix, fHasPerspective); |
| } |
| |
| const int vertexStride = (int)flushInfo.fGeometryProcessor->vertexStride(); |
| |
| // Ensure we don't request an insanely large contiguous vertex allocation. |
| static const int kMaxVertexBytes = GrBufferAllocPool::kDefaultBufferSize; |
| const int quadSize = vertexStride * kVerticesPerGlyph; |
| const int maxQuadsPerBuffer = kMaxVertexBytes / quadSize; |
| |
| int allGlyphsCursor = 0; |
| const int allGlyphsEnd = fNumGlyphs; |
| int quadCursor; |
| int quadEnd; |
| char* vertices; |
| |
| auto resetVertexBuffer = [&] { |
| quadCursor = 0; |
| quadEnd = std::min(maxQuadsPerBuffer, allGlyphsEnd - allGlyphsCursor); |
| |
| vertices = (char*)target->makeVertexSpace( |
| vertexStride, |
| kVerticesPerGlyph * quadEnd, |
| &flushInfo.fVertexBuffer, |
| &flushInfo.fVertexOffset); |
| |
| if (!vertices || !flushInfo.fVertexBuffer) { |
| SkDebugf("Could not allocate vertices\n"); |
| return false; |
| } |
| return true; |
| }; |
| |
| resetVertexBuffer(); |
| |
| for (const Geometry& geo : fGeometries.items()) { |
| const GrAtlasSubRun& subRun = geo.fSubRun; |
| SkASSERT((int)subRun.vertexStride() == vertexStride); |
| |
| const int subRunEnd = subRun.glyphCount(); |
| for (int subRunCursor = 0; subRunCursor < subRunEnd;) { |
| // Regenerate the atlas for the remainder of the glyphs in the run, or the remainder |
| // of the glyphs to fill the vertex buffer. |
| int regenEnd = subRunCursor + std::min(subRunEnd - subRunCursor, quadEnd - quadCursor); |
| auto[ok, glyphsRegenerated] = subRun.regenerateAtlas(subRunCursor, regenEnd, target); |
| // There was a problem allocating the glyph in the atlas. Bail. |
| if (!ok) { |
| return; |
| } |
| |
| geo.fillVertexData(vertices + quadCursor * quadSize, subRunCursor, glyphsRegenerated); |
| |
| subRunCursor += glyphsRegenerated; |
| quadCursor += glyphsRegenerated; |
| allGlyphsCursor += glyphsRegenerated; |
| flushInfo.fGlyphsToFlush += glyphsRegenerated; |
| |
| if (quadCursor == quadEnd || subRunCursor < subRunEnd) { |
| // Flush if not all the glyphs are drawn because either the quad buffer is full or |
| // the atlas is out of space. |
| this->createDrawForGeneratedGlyphs(target, &flushInfo); |
| if (quadCursor == quadEnd && allGlyphsCursor < allGlyphsEnd) { |
| // If the vertex buffer is full and there are still glyphs to draw then |
| // get a new buffer. |
| if(!resetVertexBuffer()) { |
| return; |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| void GrAtlasTextOp::onExecute(GrOpFlushState* flushState, const SkRect& chainBounds) { |
| auto pipeline = GrSimpleMeshDrawOpHelper::CreatePipeline(flushState, |
| std::move(fProcessors), |
| GrPipeline::InputFlags::kNone); |
| |
| flushState->executeDrawsAndUploadsForMeshDrawOp(this, chainBounds, pipeline, |
| &GrUserStencilSettings::kUnused); |
| } |
| |
| void GrAtlasTextOp::createDrawForGeneratedGlyphs( |
| GrMeshDrawOp::Target* target, FlushInfo* flushInfo) const { |
| if (!flushInfo->fGlyphsToFlush) { |
| return; |
| } |
| |
| auto atlasManager = target->atlasManager(); |
| |
| GrGeometryProcessor* gp = flushInfo->fGeometryProcessor; |
| GrMaskFormat maskFormat = this->maskFormat(); |
| |
| unsigned int numActiveViews; |
| const GrSurfaceProxyView* views = atlasManager->getViews(maskFormat, &numActiveViews); |
| SkASSERT(views); |
| // Something has gone terribly wrong, bail |
| if (!views || 0 == numActiveViews) { |
| return; |
| } |
| if (gp->numTextureSamplers() != (int) numActiveViews) { |
| // During preparation the number of atlas pages has increased. |
| // Update the proxies used in the GP to match. |
| for (unsigned i = gp->numTextureSamplers(); i < numActiveViews; ++i) { |
| flushInfo->fPrimProcProxies[i] = views[i].proxy(); |
| // This op does not know its atlas proxies when it is added to a GrOpsTasks, so the |
| // proxies don't get added during the visitProxies call. Thus we add them here. |
| target->sampledProxyArray()->push_back(views[i].proxy()); |
| // These will get unreffed when the previously recorded draws destruct. |
| for (int d = 0; d < flushInfo->fNumDraws; ++d) { |
| flushInfo->fPrimProcProxies[i]->ref(); |
| } |
| } |
| if (this->usesDistanceFields()) { |
| if (this->isLCD()) { |
| reinterpret_cast<GrDistanceFieldLCDTextGeoProc*>(gp)->addNewViews( |
| views, numActiveViews, GrSamplerState::Filter::kLinear); |
| } else { |
| reinterpret_cast<GrDistanceFieldA8TextGeoProc*>(gp)->addNewViews( |
| views, numActiveViews, GrSamplerState::Filter::kLinear); |
| } |
| } else { |
| auto filter = fNeedsGlyphTransform ? GrSamplerState::Filter::kLinear |
| : GrSamplerState::Filter::kNearest; |
| reinterpret_cast<GrBitmapTextGeoProc*>(gp)->addNewViews(views, numActiveViews, filter); |
| } |
| } |
| int maxGlyphsPerDraw = static_cast<int>(flushInfo->fIndexBuffer->size() / sizeof(uint16_t) / 6); |
| GrSimpleMesh* mesh = target->allocMesh(); |
| mesh->setIndexedPatterned(flushInfo->fIndexBuffer, kIndicesPerGlyph, flushInfo->fGlyphsToFlush, |
| maxGlyphsPerDraw, flushInfo->fVertexBuffer, kVerticesPerGlyph, |
| flushInfo->fVertexOffset); |
| target->recordDraw(flushInfo->fGeometryProcessor, mesh, 1, flushInfo->fPrimProcProxies, |
| GrPrimitiveType::kTriangles); |
| flushInfo->fVertexOffset += kVerticesPerGlyph * flushInfo->fGlyphsToFlush; |
| flushInfo->fGlyphsToFlush = 0; |
| ++flushInfo->fNumDraws; |
| } |
| |
| GrOp::CombineResult GrAtlasTextOp::onCombineIfPossible(GrOp* t, SkArenaAlloc*, const GrCaps& caps) { |
| GrAtlasTextOp* that = t->cast<GrAtlasTextOp>(); |
| |
| if (fDFGPFlags != that->fDFGPFlags || |
| fMaskType != that->fMaskType || |
| fUsesLocalCoords != that->fUsesLocalCoords || |
| fNeedsGlyphTransform != that->fNeedsGlyphTransform || |
| fHasPerspective != that->fHasPerspective || |
| fUseGammaCorrectDistanceTable != that->fUseGammaCorrectDistanceTable) { |
| // All flags must match for an op to be combined |
| return CombineResult::kCannotCombine; |
| } |
| |
| if (fProcessors != that->fProcessors) { |
| return CombineResult::kCannotCombine; |
| } |
| |
| if (fUsesLocalCoords) { |
| // If the fragment processors use local coordinates, the GPs compute them using the inverse |
| // of the view matrix stored in a uniform, so all geometries must have the same matrix. |
| const SkMatrix& thisFirstMatrix = fGeometries.front().fDrawMatrix; |
| const SkMatrix& thatFirstMatrix = that->fGeometries.front().fDrawMatrix; |
| if (!SkMatrixPriv::CheapEqual(thisFirstMatrix, thatFirstMatrix)) { |
| return CombineResult::kCannotCombine; |
| } |
| } |
| |
| if (this->usesDistanceFields()) { |
| SkASSERT(that->usesDistanceFields()); |
| if (fLuminanceColor != that->fLuminanceColor) { |
| return CombineResult::kCannotCombine; |
| } |
| } else { |
| if (this->maskType() == MaskType::kColorBitmap && |
| fGeometries.front().fColor != that->fGeometries.front().fColor) { |
| // This ensures all merged bitmap color text ops have a constant color |
| return CombineResult::kCannotCombine; |
| } |
| } |
| |
| fNumGlyphs += that->fNumGlyphs; |
| |
| // After concat, that's geometry list is emptied so it will not unref the blobs when destructed |
| fGeometries.concat(std::move(that->fGeometries)); |
| return CombineResult::kMerged; |
| } |
| |
| // TODO trying to figure out why lcd is so whack |
| GrGeometryProcessor* GrAtlasTextOp::setupDfProcessor(SkArenaAlloc* arena, |
| const GrShaderCaps& caps, |
| const SkMatrix& localMatrix, |
| const GrSurfaceProxyView* views, |
| unsigned int numActiveViews) const { |
| static constexpr int kDistanceAdjustLumShift = 5; |
| auto dfAdjustTable = GrDistanceFieldAdjustTable::Get(); |
| |
| // see if we need to create a new effect |
| if (this->isLCD()) { |
| float redCorrection = dfAdjustTable->getAdjustment( |
| SkColorGetR(fLuminanceColor) >> kDistanceAdjustLumShift, |
| fUseGammaCorrectDistanceTable); |
| float greenCorrection = dfAdjustTable->getAdjustment( |
| SkColorGetG(fLuminanceColor) >> kDistanceAdjustLumShift, |
| fUseGammaCorrectDistanceTable); |
| float blueCorrection = dfAdjustTable->getAdjustment( |
| SkColorGetB(fLuminanceColor) >> kDistanceAdjustLumShift, |
| fUseGammaCorrectDistanceTable); |
| GrDistanceFieldLCDTextGeoProc::DistanceAdjust widthAdjust = |
| GrDistanceFieldLCDTextGeoProc::DistanceAdjust::Make( |
| redCorrection, greenCorrection, blueCorrection); |
| return GrDistanceFieldLCDTextGeoProc::Make(arena, caps, views, numActiveViews, |
| GrSamplerState::Filter::kLinear, widthAdjust, |
| fDFGPFlags, localMatrix); |
| } else { |
| #ifdef SK_GAMMA_APPLY_TO_A8 |
| float correction = 0; |
| if (this->maskType() != MaskType::kAliasedDistanceField) { |
| U8CPU lum = SkColorSpaceLuminance::computeLuminance(SK_GAMMA_EXPONENT, |
| fLuminanceColor); |
| correction = dfAdjustTable->getAdjustment(lum >> kDistanceAdjustLumShift, |
| fUseGammaCorrectDistanceTable); |
| } |
| return GrDistanceFieldA8TextGeoProc::Make(arena, caps, views, numActiveViews, |
| GrSamplerState::Filter::kLinear, correction, |
| fDFGPFlags, localMatrix); |
| #else |
| return GrDistanceFieldA8TextGeoProc::Make(arena, caps, views, numActiveViews, |
| GrSamplerState::Filter::kLinear, fDFGPFlags, |
| localMatrix); |
| #endif |
| } |
| } |
| |
| #if GR_TEST_UTILS |
| |
| GrOp::Owner GrAtlasTextOp::CreateOpTestingOnly(GrRenderTargetContext* rtc, |
| const SkPaint& skPaint, |
| const SkFont& font, |
| const SkMatrixProvider& mtxProvider, |
| const char* text, |
| int x, |
| int y) { |
| size_t textLen = (int)strlen(text); |
| |
| const SkMatrix& drawMatrix(mtxProvider.localToDevice()); |
| |
| auto drawOrigin = SkPoint::Make(x, y); |
| SkGlyphRunBuilder builder; |
| builder.drawTextUTF8(skPaint, font, text, textLen, drawOrigin); |
| |
| auto glyphRunList = builder.useGlyphRunList(); |
| if (glyphRunList.empty()) { |
| return nullptr; |
| } |
| |
| |
| auto rContext = rtc->priv().recordingContext(); |
| GrSDFTOptions SDFOptions = rContext->priv().SDFTOptions(); |
| |
| sk_sp<GrTextBlob> blob = GrTextBlob::Make(glyphRunList, drawMatrix); |
| SkGlyphRunListPainter* painter = rtc->priv().testingOnly_glyphRunPainter(); |
| painter->processGlyphRun( |
| *glyphRunList.begin(), |
| drawMatrix, glyphRunList.origin(), |
| glyphRunList.paint(), |
| rtc->surfaceProps(), |
| rContext->priv().caps()->shaderCaps()->supportsDistanceFieldText(), |
| SDFOptions, blob.get()); |
| if (!blob->subRunList().head()) { |
| return nullptr; |
| } |
| |
| GrAtlasSubRun* subRun = blob->subRunList().head()->testingOnly_atlasSubRun(); |
| SkASSERT(subRun); |
| GrOp::Owner op; |
| std::tie(std::ignore, op) = subRun->makeAtlasTextOp(nullptr, mtxProvider, glyphRunList, rtc); |
| return op; |
| } |
| |
| GR_DRAW_OP_TEST_DEFINE(GrAtlasTextOp) { |
| // Setup dummy SkPaint / GrPaint / GrRenderTargetContext |
| auto rtc = GrRenderTargetContext::Make( |
| context, GrColorType::kRGBA_8888, nullptr, SkBackingFit::kApprox, {1024, 1024}); |
| |
| SkSimpleMatrixProvider matrixProvider(GrTest::TestMatrixInvertible(random)); |
| |
| SkPaint skPaint; |
| skPaint.setColor(random->nextU()); |
| |
| SkFont font; |
| if (random->nextBool()) { |
| font.setEdging(SkFont::Edging::kSubpixelAntiAlias); |
| } else { |
| font.setEdging(random->nextBool() ? SkFont::Edging::kAntiAlias : SkFont::Edging::kAlias); |
| } |
| font.setSubpixel(random->nextBool()); |
| |
| const char* text = "The quick brown fox jumps over the lazy dog."; |
| |
| // create some random x/y offsets, including negative offsets |
| static const int kMaxTrans = 1024; |
| int xPos = (random->nextU() % 2) * 2 - 1; |
| int yPos = (random->nextU() % 2) * 2 - 1; |
| int xInt = (random->nextU() % kMaxTrans) * xPos; |
| int yInt = (random->nextU() % kMaxTrans) * yPos; |
| |
| return GrAtlasTextOp::CreateOpTestingOnly( |
| rtc.get(), skPaint, font, matrixProvider, text, xInt, yInt); |
| } |
| |
| #endif |
