| /* |
| * 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::ganesh { |
| |
| /** |
| * 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::ganesh |
| |
| #endif // StencilClip_DEFINED |