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1 /* | 1 /* |
2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 #ifndef GrClipMaskManager_DEFINED | 7 #ifndef GrClipMaskManager_DEFINED |
8 #define GrClipMaskManager_DEFINED | 8 #define GrClipMaskManager_DEFINED |
9 | 9 |
10 #include "GrPipelineBuilder.h" | 10 #include "GrPipelineBuilder.h" |
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26 class SkPath; | 26 class SkPath; |
27 | 27 |
28 /** | 28 /** |
29 * Produced by GrClipMaskManager. It provides a set of modifications to the draw
ing state that | 29 * Produced by GrClipMaskManager. It provides a set of modifications to the draw
ing state that |
30 * are used to create the final GrPipeline for a GrBatch. This is a work in prog
ress. It will | 30 * are used to create the final GrPipeline for a GrBatch. This is a work in prog
ress. It will |
31 * eventually encapsulate all mechanisms for modifying the scissor, shaders, and
stencil state | 31 * eventually encapsulate all mechanisms for modifying the scissor, shaders, and
stencil state |
32 * to implement clipping. | 32 * to implement clipping. |
33 */ | 33 */ |
34 class GrAppliedClip : public SkNoncopyable { | 34 class GrAppliedClip : public SkNoncopyable { |
35 public: | 35 public: |
36 GrAppliedClip() : fIsCoCenteredMultisampledDraw(false) {} | 36 GrAppliedClip() {} |
37 | |
38 const GrFragmentProcessor* clipCoverageFragmentProcessor() const { return fC
lipCoverageFP; } | 37 const GrFragmentProcessor* clipCoverageFragmentProcessor() const { return fC
lipCoverageFP; } |
39 const GrScissorState& scissorState() const { return fScissorState; } | 38 const GrScissorState& scissorState() const { return fScissorState; } |
40 | 39 |
41 /** | |
42 * This is used to perform a multisampled clip test when the draw requires M
SAA to be disabled. | |
43 * It will allow the stencil test to run multisampled by turning on hardware
MSAA, but co-locate | |
44 * the draw's samples at pixel center so it will still feel like MSAA is dis
abled. | |
45 */ | |
46 bool isCoCenteredMultisampledDraw() const { return fIsCoCenteredMultisampled
Draw; } | |
47 | |
48 private: | 40 private: |
49 SkAutoTUnref<const GrFragmentProcessor> fClipCoverageFP; | 41 SkAutoTUnref<const GrFragmentProcessor> fClipCoverageFP; |
50 GrScissorState fScissorState; | 42 GrScissorState fScissorState; |
51 bool fIsCoCenteredMultisampledDraw; | |
52 | |
53 friend class GrClipMaskManager; | 43 friend class GrClipMaskManager; |
54 | 44 |
55 typedef SkNoncopyable INHERITED; | 45 typedef SkNoncopyable INHERITED; |
56 }; | 46 }; |
57 | 47 |
58 /** | 48 /** |
59 * The clip mask creator handles the generation of the clip mask. If anti | 49 * The clip mask creator handles the generation of the clip mask. If anti |
60 * aliasing is requested it will (in the future) generate a single channel | 50 * aliasing is requested it will (in the future) generate a single channel |
61 * (8bit) mask. If no anti aliasing is requested it will generate a 1-bit | 51 * (8bit) mask. If no anti aliasing is requested it will generate a 1-bit |
62 * mask in the stencil buffer. In the non anti-aliasing case, if the clip | 52 * mask in the stencil buffer. In the non anti-aliasing case, if the clip |
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178 GrTexture* createCachedMask(int width, int height, const GrUniqueKey& key, b
ool renderTarget); | 168 GrTexture* createCachedMask(int width, int height, const GrUniqueKey& key, b
ool renderTarget); |
179 | 169 |
180 static const int kMaxAnalyticElements = 4; | 170 static const int kMaxAnalyticElements = 4; |
181 | 171 |
182 GrDrawTarget* fDrawTarget; // This is our owning draw target. | 172 GrDrawTarget* fDrawTarget; // This is our owning draw target. |
183 StencilClipMode fClipMode; | 173 StencilClipMode fClipMode; |
184 | 174 |
185 typedef SkNoncopyable INHERITED; | 175 typedef SkNoncopyable INHERITED; |
186 }; | 176 }; |
187 #endif // GrClipMaskManager_DEFINED | 177 #endif // GrClipMaskManager_DEFINED |
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