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- /*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #ifndef GrClearOp_DEFINED
- #define GrClearOp_DEFINED
- #include "src/gpu/GrFixedClip.h"
- #include "src/gpu/ops/GrOp.h"
- class GrOpFlushState;
- class GrRecordingContext;
- class GrClearOp final : public GrOp {
- public:
- DEFINE_OP_CLASS_ID
- static std::unique_ptr<GrClearOp> Make(GrRecordingContext* context,
- const GrFixedClip& clip,
- const SkPMColor4f& color,
- GrSurfaceProxy* dstProxy);
- static std::unique_ptr<GrClearOp> Make(GrRecordingContext* context,
- const SkIRect& rect,
- const SkPMColor4f& color,
- bool fullScreen);
- const char* name() const override { return "Clear"; }
- #ifdef SK_DEBUG
- SkString dumpInfo() const override {
- SkString string;
- string.append(INHERITED::dumpInfo());
- string.appendf("Scissor [ ");
- if (fClip.scissorEnabled()) {
- const SkIRect& r = fClip.scissorRect();
- string.appendf("L: %d, T: %d, R: %d, B: %d", r.fLeft, r.fTop, r.fRight, r.fBottom);
- } else {
- string.append("disabled");
- }
- string.appendf("], Color: 0x%08x\n", fColor.toBytes_RGBA());
- return string;
- }
- #endif
- const SkPMColor4f& color() const { return fColor; }
- void setColor(const SkPMColor4f& color) { fColor = color; }
- private:
- friend class GrOpMemoryPool; // for ctors
- GrClearOp(const GrFixedClip& clip, const SkPMColor4f& color, GrSurfaceProxy* proxy);
- GrClearOp(const SkIRect& rect, const SkPMColor4f& color, bool fullScreen)
- : INHERITED(ClassID())
- , fClip(GrFixedClip(rect))
- , fColor(color) {
- if (fullScreen) {
- fClip.disableScissor();
- }
- this->setBounds(SkRect::Make(rect), HasAABloat::kNo, IsZeroArea::kNo);
- }
- CombineResult onCombineIfPossible(GrOp* t, const GrCaps& caps) override {
- // This could be much more complicated. Currently we look at cases where the new clear
- // contains the old clear, or when the new clear is a subset of the old clear and is the
- // same color.
- GrClearOp* cb = t->cast<GrClearOp>();
- if (fClip.windowRectsState() != cb->fClip.windowRectsState()) {
- return CombineResult::kCannotCombine;
- }
- if (cb->contains(this)) {
- fClip = cb->fClip;
- fColor = cb->fColor;
- return CombineResult::kMerged;
- } else if (cb->fColor == fColor && this->contains(cb)) {
- return CombineResult::kMerged;
- }
- return CombineResult::kCannotCombine;
- }
- bool contains(const GrClearOp* that) const {
- // The constructor ensures that scissor gets disabled on any clip that fills the entire RT.
- return !fClip.scissorEnabled() ||
- (that->fClip.scissorEnabled() &&
- fClip.scissorRect().contains(that->fClip.scissorRect()));
- }
- void onPrepare(GrOpFlushState*) override {}
- void onExecute(GrOpFlushState* state, const SkRect& chainBounds) override;
- GrFixedClip fClip;
- SkPMColor4f fColor;
- typedef GrOp INHERITED;
- };
- #endif
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