1 /*
2  * Copyright 2016 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 GrFixedClip_DEFINED
9 #define GrFixedClip_DEFINED
10 
11 #include "GrClip.h"
12 #include "GrScissorState.h"
13 #include "GrWindowRectsState.h"
14 
15 /**
16  * GrFixedClip is a clip that gets implemented by fixed-function hardware.
17  */
18 class GrFixedClip final : public GrClip {
19 public:
20     GrFixedClip() = default;
GrFixedClip(const SkIRect & scissorRect)21     explicit GrFixedClip(const SkIRect& scissorRect) : fScissorState(scissorRect) {}
22 
scissorState()23     const GrScissorState& scissorState() const { return fScissorState; }
scissorEnabled()24     bool scissorEnabled() const { return fScissorState.enabled(); }
scissorRect()25     const SkIRect& scissorRect() const { SkASSERT(scissorEnabled()); return fScissorState.rect(); }
26 
disableScissor()27     void disableScissor() { fScissorState.setDisabled(); }
28 
intersect(const SkIRect & irect)29     bool SK_WARN_UNUSED_RESULT intersect(const SkIRect& irect) {
30         return fScissorState.intersect(irect);
31     }
32 
windowRectsState()33     const GrWindowRectsState& windowRectsState() const { return fWindowRectsState; }
hasWindowRectangles()34     bool hasWindowRectangles() const { return fWindowRectsState.enabled(); }
35 
disableWindowRectangles()36     void disableWindowRectangles() { fWindowRectsState.setDisabled(); }
37 
setWindowRectangles(const GrWindowRectangles & windows,const SkIPoint & origin,GrWindowRectsState::Mode mode)38     void setWindowRectangles(const GrWindowRectangles& windows, const SkIPoint& origin,
39                              GrWindowRectsState::Mode mode) {
40         fWindowRectsState.set(windows, origin, mode);
41     }
42 
43     bool quickContains(const SkRect&) const override;
44     void getConservativeBounds(int w, int h, SkIRect* devResult, bool* iior) const override;
45     bool isRRect(const SkRect& rtBounds, SkRRect* rr, bool* aa) const override;
46     bool apply(GrContext*, GrDrawContext*, bool, bool, GrAppliedClip* out) const override;
47 
48     static const GrFixedClip& Disabled();
49 
50 private:
51     GrScissorState       fScissorState;
52     GrWindowRectsState   fWindowRectsState;
53 };
54 
55 #endif
56