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

/*
 * Copyright 2011 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/ganesh/ops/DefaultPathRenderer.h"

#include "include/core/SkMatrix.h"
#include "include/core/SkPath.h"
#include "include/core/SkPathTypes.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkScalar.h"
#include "include/core/SkString.h"
#include "include/core/SkStrokeRec.h"
#include "include/gpu/ganesh/GrRecordingContext.h"
#include "include/private/SkColorData.h"
#include "include/private/base/SkAssert.h"
#include "include/private/base/SkDebug.h"
#include "include/private/base/SkPoint_impl.h"
#include "include/private/base/SkTArray.h"
#include "include/private/base/SkTDArray.h"
#include "include/private/base/SkTo.h"
#include "include/private/gpu/ganesh/GrTypesPriv.h"
#include "src/core/SkGeometry.h"
#include "src/core/SkMatrixPriv.h"
#include "src/gpu/ganesh/GrAppliedClip.h"
#include "src/gpu/ganesh/GrAuditTrail.h"
#include "src/gpu/ganesh/GrBuffer.h"
#include "src/gpu/ganesh/GrCaps.h"
#include "src/gpu/ganesh/GrClip.h"
#include "src/gpu/ganesh/GrDefaultGeoProcFactory.h"
#include "src/gpu/ganesh/GrGeometryProcessor.h"
#include "src/gpu/ganesh/GrMeshDrawTarget.h"
#include "src/gpu/ganesh/GrOpFlushState.h"
#include "src/gpu/ganesh/GrPaint.h"
#include "src/gpu/ganesh/GrProcessorAnalysis.h"
#include "src/gpu/ganesh/GrProcessorSet.h"
#include "src/gpu/ganesh/GrProgramInfo.h"
#include "src/gpu/ganesh/GrRecordingContextPriv.h"
#include "src/gpu/ganesh/GrRenderTargetProxy.h"
#include "src/gpu/ganesh/GrSimpleMesh.h"
#include "src/gpu/ganesh/GrStyle.h"
#include "src/gpu/ganesh/GrTestUtils.h"
#include "src/gpu/ganesh/GrUserStencilSettings.h"
#include "src/gpu/ganesh/GrUtil.h"
#include "src/gpu/ganesh/SurfaceDrawContext.h"
#include "src/gpu/ganesh/effects/GrDisableColorXP.h"
#include "src/gpu/ganesh/geometry/GrPathUtils.h"
#include "src/gpu/ganesh/geometry/GrStyledShape.h"
#include "src/gpu/ganesh/ops/GrMeshDrawOp.h"
#include "src/gpu/ganesh/ops/GrOp.h"
#include "src/gpu/ganesh/ops/GrPathStencilSettings.h"
#include "src/gpu/ganesh/ops/GrSimpleMeshDrawOpHelperWithStencil.h"

#if defined(GPU_TEST_UTILS)
#include "src/base/SkRandom.h"
#include "src/gpu/ganesh/GrDrawOpTest.h"
#endif

#include <cstddef>
#include <cstdint>
#include <utility>

class GrDstProxyView;
class GrSurfaceProxyView;
class SkArenaAlloc;
enum class GrXferBarrierFlags;

usingnamespaceskia_private;

////////////////////////////////////////////////////////////////////////////////
// Helpers for drawPath

namespace {

#define STENCIL_OFF …

inline bool single_pass_shape(const GrStyledShape& shape) { … }

class PathGeoBuilder { … };

class DefaultPathOp final : public GrMeshDrawOp { … };

}  // anonymous namespace

///////////////////////////////////////////////////////////////////////////////////////////////////

#if defined(GPU_TEST_UTILS)

GR_DRAW_OP_TEST_DEFINE(DefaultPathOp) {
    SkMatrix viewMatrix = GrTest::TestMatrix(random);

    // For now just hairlines because the other types of draws require two ops.
    // TODO we should figure out a way to combine the stencil and cover steps into one op.
    GrStyle style(SkStrokeRec::kHairline_InitStyle);
    const SkPath& path = GrTest::TestPath(random);

    // Compute srcSpaceTol
    SkRect bounds = path.getBounds();
    SkScalar tol = GrPathUtils::kDefaultTolerance;
    SkScalar srcSpaceTol = GrPathUtils::scaleToleranceToSrc(tol, viewMatrix, bounds);

    viewMatrix.mapRect(&bounds);
    uint8_t coverage = GrTest::RandomCoverage(random);
    GrAAType aaType = GrAAType::kNone;
    if (numSamples > 1 && random->nextBool()) {
        aaType = GrAAType::kMSAA;
    }
    return DefaultPathOp::Make(context, std::move(paint), path, srcSpaceTol, coverage, viewMatrix,
                               true, aaType, bounds, GrGetRandomStencil(random, context));
}

#endif

///////////////////////////////////////////////////////////////////////////////////////////////////

namespace skgpu::ganesh {

bool DefaultPathRenderer::internalDrawPath(skgpu::ganesh::SurfaceDrawContext* sdc,
                                           GrPaint&& paint,
                                           GrAAType aaType,
                                           const GrUserStencilSettings& userStencilSettings,
                                           const GrClip* clip,
                                           const SkMatrix& viewMatrix,
                                           const GrStyledShape& shape,
                                           bool stencilOnly) { … }

PathRenderer::StencilSupport
DefaultPathRenderer::onGetStencilSupport(const GrStyledShape& shape) const { … }

PathRenderer::CanDrawPath DefaultPathRenderer::onCanDrawPath(const CanDrawPathArgs& args) const { … }

bool DefaultPathRenderer::onDrawPath(const DrawPathArgs& args) { … }

void DefaultPathRenderer::onStencilPath(const StencilPathArgs& args) { … }

}  // namespace skgpu::ganesh