| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef GrAppliedClip_DEFINED |
| #define GrAppliedClip_DEFINED |
| |
| #include "GrFragmentProcessor.h" |
| #include "GrScissorState.h" |
| #include "GrWindowRectsState.h" |
| |
| #include "SkClipStack.h" |
| |
| /** |
| * Produced by GrClip. It provides a set of modifications to the drawing state that are used to |
| * create the final GrPipeline for a GrOp. |
| */ |
| class GrAppliedClip { |
| public: |
| GrAppliedClip() = default; |
| GrAppliedClip(GrAppliedClip&& that) = default; |
| GrAppliedClip(const GrAppliedClip&) = delete; |
| |
| const GrScissorState& scissorState() const { return fScissorState; } |
| const GrWindowRectsState& windowRectsState() const { return fWindowRectsState; } |
| GrFragmentProcessor* clipCoverageFragmentProcessor() const { return fClipCoverageFP.get(); } |
| bool hasStencilClip() const { return SkClipStack::kInvalidGenID != fClipStackID; } |
| |
| /** |
| * Intersects the applied clip with the provided rect. Returns false if the draw became empty. |
| * 'clippedDrawBounds' will be intersected with 'irect'. This returns false if the clip becomes |
| * empty or the draw no longer intersects the clip. In either case the draw can be skipped. |
| */ |
| bool addScissor(const SkIRect& irect, SkRect* clippedDrawBounds) { |
| return fScissorState.intersect(irect) && clippedDrawBounds->intersect(SkRect::Make(irect)); |
| } |
| |
| void addWindowRectangles(const GrWindowRectsState& windowState) { |
| SkASSERT(!fWindowRectsState.enabled()); |
| fWindowRectsState = windowState; |
| } |
| |
| void addWindowRectangles(const GrWindowRectangles& windows, GrWindowRectsState::Mode mode) { |
| SkASSERT(!fWindowRectsState.enabled()); |
| fWindowRectsState.set(windows, mode); |
| } |
| |
| void addCoverageFP(sk_sp<GrFragmentProcessor> fp) { |
| SkASSERT(!fClipCoverageFP); |
| fClipCoverageFP = fp; |
| } |
| |
| void addStencilClip(uint32_t clipStackID) { |
| SkASSERT(SkClipStack::kInvalidGenID == fClipStackID); |
| fClipStackID = clipStackID; |
| } |
| |
| bool doesClip() const { |
| return fScissorState.enabled() || fClipCoverageFP || this->hasStencilClip() || |
| fWindowRectsState.enabled(); |
| } |
| |
| bool operator==(const GrAppliedClip& that) const { |
| if (fScissorState != that.fScissorState || fClipStackID != that.fClipStackID) { |
| return false; |
| } |
| if (SkToBool(fClipCoverageFP)) { |
| if (!SkToBool(that.fClipCoverageFP) || |
| !that.fClipCoverageFP->isEqual(*fClipCoverageFP)) { |
| return false; |
| } |
| } else if (SkToBool(that.fClipCoverageFP)) { |
| return false; |
| } |
| return fWindowRectsState == that.fWindowRectsState; |
| } |
| bool operator!=(const GrAppliedClip& that) const { return !(*this == that); } |
| |
| private: |
| GrScissorState fScissorState; |
| GrWindowRectsState fWindowRectsState; |
| sk_sp<GrFragmentProcessor> fClipCoverageFP; |
| uint32_t fClipStackID = SkClipStack::kInvalidGenID; |
| }; |
| |
| #endif |