blob: 6e766702d22e2a7fba20e0340eeaa807783e3e57 [file] [log] [blame]
/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef StencilClip_DEFINED
#define StencilClip_DEFINED
#include "src/gpu/ganesh/GrAppliedClip.h"
#include "src/gpu/ganesh/GrFixedClip.h"
namespace skgpu::v1 {
/**
* Implements GrHardClip with the currently-existing stencil buffer contents and GrFixedClip.
*/
class StencilClip final : public GrHardClip {
public:
explicit StencilClip(const SkISize& rtDims, uint32_t stencilStackID = SK_InvalidGenID)
: fFixedClip(rtDims)
, fStencilStackID(stencilStackID) {}
StencilClip(const SkISize& rtDims,
const SkIRect& scissorRect,
uint32_t stencilStackID = SK_InvalidGenID)
: fFixedClip(rtDims, scissorRect)
, fStencilStackID(stencilStackID) {}
const GrFixedClip& fixedClip() const { return fFixedClip; }
GrFixedClip& fixedClip() { return fFixedClip; }
uint32_t stencilStackID() const { return fStencilStackID; }
bool hasStencilClip() const { return SK_InvalidGenID != fStencilStackID; }
void setStencilClip(uint32_t stencilStackID) { fStencilStackID = stencilStackID; }
SkIRect getConservativeBounds() const final {
return fFixedClip.getConservativeBounds();
}
Effect apply(GrAppliedHardClip* out, SkIRect* bounds) const final {
Effect effect = fFixedClip.apply(out, bounds);
if (effect == Effect::kClippedOut) {
// Stencil won't bring back coverage
return Effect::kClippedOut;
}
if (this->hasStencilClip()) {
out->addStencilClip(fStencilStackID);
effect = Effect::kClipped;
}
return effect;
}
PreClipResult preApply(const SkRect& drawBounds, GrAA aa) const final {
if (this->hasStencilClip()) {
return this->INHERITED::preApply(drawBounds, aa);
} else {
return fFixedClip.preApply(drawBounds, aa);
}
}
private:
GrFixedClip fFixedClip;
uint32_t fStencilStackID;
using INHERITED = GrClip;
};
} // namespace skgpu::v1
#endif // StencilClip_DEFINED