chromium/third_party/skia/src/gpu/ganesh/ops/PathStencilCoverOp.cpp

/*
 * Copyright 2021 Google LLC.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#include "src/gpu/ganesh/ops/PathStencilCoverOp.h"

#include "include/core/SkMatrix.h"
#include "include/core/SkPathTypes.h"
#include "include/core/SkPoint.h"
#include "include/gpu/ganesh/GrRecordingContext.h"
#include "include/private/base/SkAlignedStorage.h"
#include "include/private/base/SkAssert.h"
#include "include/private/base/SkOnce.h"
#include "src/core/SkMatrixPriv.h"
#include "src/core/SkSLTypeShared.h"
#include "src/gpu/BufferWriter.h"
#include "src/gpu/ResourceKey.h"
#include "src/gpu/ganesh/GrAppliedClip.h"
#include "src/gpu/ganesh/GrEagerVertexAllocator.h"
#include "src/gpu/ganesh/GrGeometryProcessor.h"
#include "src/gpu/ganesh/GrOpFlushState.h"
#include "src/gpu/ganesh/GrPipeline.h"
#include "src/gpu/ganesh/GrProcessorAnalysis.h"
#include "src/gpu/ganesh/GrProgramInfo.h"
#include "src/gpu/ganesh/GrRecordingContextPriv.h"
#include "src/gpu/ganesh/GrRenderTargetProxy.h"
#include "src/gpu/ganesh/GrResourceProvider.h"
#include "src/gpu/ganesh/GrShaderCaps.h"
#include "src/gpu/ganesh/GrShaderVar.h"
#include "src/gpu/ganesh/GrSurfaceProxyView.h"
#include "src/gpu/ganesh/glsl/GrGLSLFragmentShaderBuilder.h"
#include "src/gpu/ganesh/glsl/GrGLSLProgramDataManager.h"
#include "src/gpu/ganesh/glsl/GrGLSLUniformHandler.h"
#include "src/gpu/ganesh/glsl/GrGLSLVarying.h"
#include "src/gpu/ganesh/glsl/GrGLSLVertexGeoBuilder.h"
#include "src/gpu/ganesh/ops/FillPathFlags.h"
#include "src/gpu/ganesh/ops/GrSimpleMeshDrawOpHelper.h"
#include "src/gpu/ganesh/tessellate/GrPathTessellationShader.h"
#include "src/gpu/tessellate/AffineMatrix.h"
#include "src/gpu/tessellate/MiddleOutPolygonTriangulator.h"

#include <algorithm>
#include <array>
#include <cstddef>
#include <memory>

class GrDstProxyView;
enum class GrXferBarrierFlags;
namespace skgpu {
class KeyBuilder;
}
struct GrUserStencilSettings;

namespace {

// Fills a path's bounding box, with subpixel outset to avoid possible T-junctions with extreme
// edges of the path.
// NOTE: The emitted geometry may not be axis-aligned, depending on the view matrix.
class BoundingBoxShader : public GrGeometryProcessor { … };

std::unique_ptr<GrGeometryProcessor::ProgramImpl> BoundingBoxShader::makeProgramImpl(
        const GrShaderCaps&) const { … }

}  // anonymous namespace

namespace skgpu::ganesh {

void PathStencilCoverOp::visitProxies(const GrVisitProxyFunc& func) const { … }

GrDrawOp::FixedFunctionFlags PathStencilCoverOp::fixedFunctionFlags() const { … }

GrProcessorSet::Analysis PathStencilCoverOp::finalize(const GrCaps& caps,
                                                      const GrAppliedClip* clip,
                                                      GrClampType clampType) { … }

void PathStencilCoverOp::prePreparePrograms(const GrTessellationShader::ProgramArgs& args,
                                            GrAppliedClip&& appliedClip) { … }

void PathStencilCoverOp::onPrePrepare(GrRecordingContext* context,
                                      const GrSurfaceProxyView& writeView, GrAppliedClip* clip,
                                      const GrDstProxyView& dstProxyView,
                                      GrXferBarrierFlags renderPassXferBarriers,
                                      GrLoadOp colorLoadOp) { … }

SKGPU_DECLARE_STATIC_UNIQUE_KEY(gUnitQuadBufferKey);

void PathStencilCoverOp::onPrepare(GrOpFlushState* flushState) { … }

void PathStencilCoverOp::onExecute(GrOpFlushState* flushState, const SkRect& chainBounds) { … }

}  // namespace skgpu::ganesh