| /* |
| * Copyright 2021 Google LLC. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef GrPathStencilFillOp_DEFINED |
| #define GrPathStencilFillOp_DEFINED |
| |
| #include "src/gpu/ops/GrDrawOp.h" |
| #include "src/gpu/tessellate/GrPathShader.h" |
| #include "src/gpu/tessellate/GrTessellationPathRenderer.h" |
| |
| class GrPathTessellator; |
| |
| // Draws paths using a standard Redbook "stencil then fill" method. Curves get linearized by either |
| // GPU tessellation shaders or indirect draws. This Op doesn't apply analytic AA, so it requires a |
| // render target that supports either MSAA or mixed samples if AA is desired. |
| class GrPathStencilFillOp : public GrDrawOp { |
| private: |
| DEFINE_OP_CLASS_ID |
| |
| GrPathStencilFillOp(const SkMatrix& viewMatrix, const SkPath& path, GrPaint&& paint, |
| GrAAType aaType, GrTessellationPathRenderer::OpFlags opFlags) |
| : GrDrawOp(ClassID()) |
| , fOpFlags(opFlags) |
| , fViewMatrix(viewMatrix) |
| , fPath(path) |
| , fAAType(aaType) |
| , fColor(paint.getColor4f()) |
| , fProcessors(std::move(paint)) { |
| SkRect devBounds; |
| fViewMatrix.mapRect(&devBounds, path.getBounds()); |
| this->setBounds(devBounds, HasAABloat(GrAAType::kCoverage == fAAType), IsHairline::kNo); |
| } |
| |
| const char* name() const override { return "GrPathStencilFillOp"; } |
| void visitProxies(const VisitProxyFunc& fn) const override; |
| FixedFunctionFlags fixedFunctionFlags() const override; |
| GrProcessorSet::Analysis finalize(const GrCaps&, const GrAppliedClip*, |
| bool hasMixedSampledCoverage, GrClampType) override; |
| |
| // Chooses the rendering method we will use and creates the corresponding tessellator and |
| // stencil/fill programs. |
| void prePreparePrograms(const GrPathShader::ProgramArgs&, GrAppliedClip&& clip); |
| |
| void onPrePrepare(GrRecordingContext*, const GrSurfaceProxyView&, GrAppliedClip*, |
| const GrXferProcessor::DstProxyView&, GrXferBarrierFlags, |
| GrLoadOp colorLoadOp) override; |
| void onPrepare(GrOpFlushState*) override; |
| void onExecute(GrOpFlushState*, const SkRect& chainBounds) override; |
| |
| const GrTessellationPathRenderer::OpFlags fOpFlags; |
| const SkMatrix fViewMatrix; |
| const SkPath fPath; |
| const GrAAType fAAType; |
| SkPMColor4f fColor; |
| GrProcessorSet fProcessors; |
| |
| // Decided during prePreparePrograms. |
| GrPathTessellator* fTessellator = nullptr; |
| const GrProgramInfo* fStencilFanProgram = nullptr; |
| const GrProgramInfo* fStencilPathProgram = nullptr; |
| const GrProgramInfo* fFillBBoxProgram = nullptr; |
| |
| // Filled during onPrepare. |
| sk_sp<const GrBuffer> fFanBuffer; |
| int fFanBaseVertex = 0; |
| int fFanVertexCount = 0; |
| |
| friend class GrOp; // For ctor. |
| }; |
| |
| #endif |