1 /* 2 * Copyright 2015 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef GrClearOp_DEFINED 9 #define GrClearOp_DEFINED 10 11 #include "src/gpu/GrFixedClip.h" 12 #include "src/gpu/ops/GrOp.h" 13 14 class GrOpFlushState; 15 class GrRecordingContext; 16 17 class GrClearOp final : public GrOp { 18 public: 19 DEFINE_OP_CLASS_ID 20 21 static std::unique_ptr<GrClearOp> Make(GrRecordingContext* context, 22 const GrFixedClip& clip, 23 const SkPMColor4f& color, 24 GrSurfaceProxy* dstProxy); 25 26 static std::unique_ptr<GrClearOp> Make(GrRecordingContext* context, 27 const SkIRect& rect, 28 const SkPMColor4f& color, 29 bool fullScreen); 30 name()31 const char* name() const override { return "Clear"; } 32 33 #ifdef SK_DEBUG dumpInfo()34 SkString dumpInfo() const override { 35 SkString string; 36 string.append(INHERITED::dumpInfo()); 37 string.appendf("Scissor [ "); 38 if (fClip.scissorEnabled()) { 39 const SkIRect& r = fClip.scissorRect(); 40 string.appendf("L: %d, T: %d, R: %d, B: %d", r.fLeft, r.fTop, r.fRight, r.fBottom); 41 } else { 42 string.append("disabled"); 43 } 44 string.appendf("], Color: 0x%08x\n", fColor.toBytes_RGBA()); 45 return string; 46 } 47 #endif 48 color()49 const SkPMColor4f& color() const { return fColor; } setColor(const SkPMColor4f & color)50 void setColor(const SkPMColor4f& color) { fColor = color; } 51 52 private: 53 friend class GrOpMemoryPool; // for ctors 54 55 GrClearOp(const GrFixedClip& clip, const SkPMColor4f& color, GrSurfaceProxy* proxy); 56 GrClearOp(const SkIRect & rect,const SkPMColor4f & color,bool fullScreen)57 GrClearOp(const SkIRect& rect, const SkPMColor4f& color, bool fullScreen) 58 : INHERITED(ClassID()) 59 , fClip(GrFixedClip(rect)) 60 , fColor(color) { 61 62 if (fullScreen) { 63 fClip.disableScissor(); 64 } 65 this->setBounds(SkRect::Make(rect), HasAABloat::kNo, IsHairline::kNo); 66 } 67 onCombineIfPossible(GrOp * t,GrRecordingContext::Arenas *,const GrCaps & caps)68 CombineResult onCombineIfPossible(GrOp* t, GrRecordingContext::Arenas*, 69 const GrCaps& caps) override { 70 // This could be much more complicated. Currently we look at cases where the new clear 71 // contains the old clear, or when the new clear is a subset of the old clear and is the 72 // same color. 73 GrClearOp* cb = t->cast<GrClearOp>(); 74 if (fClip.windowRectsState() != cb->fClip.windowRectsState()) { 75 return CombineResult::kCannotCombine; 76 } 77 if (cb->contains(this)) { 78 fClip = cb->fClip; 79 fColor = cb->fColor; 80 return CombineResult::kMerged; 81 } else if (cb->fColor == fColor && this->contains(cb)) { 82 return CombineResult::kMerged; 83 } 84 return CombineResult::kCannotCombine; 85 } 86 contains(const GrClearOp * that)87 bool contains(const GrClearOp* that) const { 88 // The constructor ensures that scissor gets disabled on any clip that fills the entire RT. 89 return !fClip.scissorEnabled() || 90 (that->fClip.scissorEnabled() && 91 fClip.scissorRect().contains(that->fClip.scissorRect())); 92 } 93 onPrepare(GrOpFlushState *)94 void onPrepare(GrOpFlushState*) override {} 95 96 void onExecute(GrOpFlushState* state, const SkRect& chainBounds) override; 97 98 GrFixedClip fClip; 99 SkPMColor4f fColor; 100 101 typedef GrOp INHERITED; 102 }; 103 104 #endif 105