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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrGpu.h"
#include "GrPathRendering.h"
#include "SkDescriptor.h"
#include "SkScalerContext.h"
#include "SkGlyph.h"
#include "SkMatrix.h"
#include "SkTypeface.h"
#include "GrPathRange.h"
const GrUserStencilSettings& GrPathRendering::GetStencilPassSettings(FillType fill) {
switch (fill) {
default:
SK_ABORT("Unexpected path fill.");
case GrPathRendering::kWinding_FillType: {
constexpr static GrUserStencilSettings kWindingStencilPass(
GrUserStencilSettings::StaticInit<
0xffff,
GrUserStencilTest::kAlwaysIfInClip,
0xffff,
GrUserStencilOp::kIncWrap,
GrUserStencilOp::kIncWrap,
0xffff>()
);
return kWindingStencilPass;
}
case GrPathRendering::kEvenOdd_FillType: {
constexpr static GrUserStencilSettings kEvenOddStencilPass(
GrUserStencilSettings::StaticInit<
0xffff,
GrUserStencilTest::kAlwaysIfInClip,
0xffff,
GrUserStencilOp::kInvert,
GrUserStencilOp::kInvert,
0xffff>()
);
return kEvenOddStencilPass;
}
}
}
class GlyphGenerator : public GrPathRange::PathGenerator {
public:
GlyphGenerator(const SkTypeface& typeface, const SkScalerContextEffects& effects,
const SkDescriptor& desc)
: fScalerContext(typeface.createScalerContext(effects, &desc))
#ifdef SK_DEBUG
, fDesc(desc.copy())
#endif
{}
int getNumPaths() override {
return fScalerContext->getGlyphCount();
}
void generatePath(int glyphID, SkPath* out) override {
fScalerContext->getPath(glyphID, out);
}
#ifdef SK_DEBUG
bool isEqualTo(const SkDescriptor& desc) const override { return *fDesc == desc; }
#endif
private:
const std::unique_ptr<SkScalerContext> fScalerContext;
#ifdef SK_DEBUG
const std::unique_ptr<SkDescriptor> fDesc;
#endif
};
void GrPathRendering::stencilPath(const StencilPathArgs& args, const GrPath* path) {
fGpu->handleDirtyContext();
this->onStencilPath(args, path);
}
void GrPathRendering::drawPath(const GrPipeline& pipeline,
const GrPrimitiveProcessor& primProc,
// Cover pass settings in pipeline.
const GrStencilSettings& stencilPassSettings,
const GrPath* path) {
fGpu->handleDirtyContext();
if (GrXferBarrierType barrierType = pipeline.xferBarrierType(*fGpu->caps())) {
fGpu->xferBarrier(pipeline.renderTarget(), barrierType);
}
this->onDrawPath(pipeline, primProc, stencilPassSettings, path);
}
void GrPathRendering::drawPaths(const GrPipeline& pipeline,
const GrPrimitiveProcessor& primProc,
// Cover pass settings in pipeline.
const GrStencilSettings& stencilPassSettings,
const GrPathRange* pathRange,
const void* indices,
PathIndexType indexType,
const float transformValues[],
PathTransformType transformType,
int count) {
fGpu->handleDirtyContext();
if (GrXferBarrierType barrierType = pipeline.xferBarrierType(*fGpu->caps())) {
fGpu->xferBarrier(pipeline.renderTarget(), barrierType);
}
#ifdef SK_DEBUG
pathRange->assertPathsLoaded(indices, indexType, count);
#endif
this->onDrawPaths(pipeline, primProc, stencilPassSettings, pathRange, indices, indexType,
transformValues, transformType, count);
}
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