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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 "GrClipMaskCache.h" | 10 #include "GrClipMaskCache.h" |
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37 GrClipMaskManager(GrClipTarget* owner); | 37 GrClipMaskManager(GrClipTarget* owner); |
38 | 38 |
39 /** | 39 /** |
40 * Creates a clip mask if necessary as a stencil buffer or alpha texture | 40 * Creates a clip mask if necessary as a stencil buffer or alpha texture |
41 * and sets the GrGpu's scissor and stencil state. If the return is false | 41 * and sets the GrGpu's scissor and stencil state. If the return is false |
42 * then the draw can be skipped. The AutoRestoreEffects is initialized by | 42 * then the draw can be skipped. The AutoRestoreEffects is initialized by |
43 * the manager when it must install additional effects to implement the | 43 * the manager when it must install additional effects to implement the |
44 * clip. devBounds is optional but can help optimize clipping. | 44 * clip. devBounds is optional but can help optimize clipping. |
45 */ | 45 */ |
46 bool setupClipping(const GrPipelineBuilder&, | 46 bool setupClipping(const GrPipelineBuilder&, |
47 GrPipelineBuilder::AutoRestoreFragmentProcessors*, | 47 GrPipelineBuilder::AutoRestoreFragmentProcessorState*, |
48 GrPipelineBuilder::AutoRestoreStencil*, | 48 GrPipelineBuilder::AutoRestoreStencil*, |
49 GrPipelineBuilder::AutoRestoreProcessorDataManager*, | |
50 GrScissorState*, | 49 GrScissorState*, |
51 const SkRect* devBounds); | 50 const SkRect* devBounds); |
52 | 51 |
53 /** | 52 /** |
54 * Purge resources to free up memory. TODO: This class shouldn't hold any lo
ng lived refs | 53 * Purge resources to free up memory. TODO: This class shouldn't hold any lo
ng lived refs |
55 * which will allow Resourcecache to automatically purge anything this class
has created. | 54 * which will allow Resourcecache to automatically purge anything this class
has created. |
56 */ | 55 */ |
57 void purgeResources(); | 56 void purgeResources(); |
58 | 57 |
59 bool isClipInStencil() const { | 58 bool isClipInStencil() const { |
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81 // Clip against the existing representation of the clip in the high bit | 80 // Clip against the existing representation of the clip in the high bit |
82 // of the stencil buffer. | 81 // of the stencil buffer. |
83 kRespectClip_StencilClipMode, | 82 kRespectClip_StencilClipMode, |
84 // Neither writing to nor clipping against the clip bit. | 83 // Neither writing to nor clipping against the clip bit. |
85 kIgnoreClip_StencilClipMode, | 84 kIgnoreClip_StencilClipMode, |
86 }; | 85 }; |
87 | 86 |
88 // Attempts to install a series of coverage effects to implement the clip. R
eturn indicates | 87 // Attempts to install a series of coverage effects to implement the clip. R
eturn indicates |
89 // whether the element list was successfully converted to effects. | 88 // whether the element list was successfully converted to effects. |
90 bool installClipEffects(const GrPipelineBuilder&, | 89 bool installClipEffects(const GrPipelineBuilder&, |
91 GrPipelineBuilder::AutoRestoreFragmentProcessors*, | 90 GrPipelineBuilder::AutoRestoreFragmentProcessorState
*, |
92 const GrReducedClip::ElementList&, | 91 const GrReducedClip::ElementList&, |
93 const SkVector& clipOffset, | 92 const SkVector& clipOffset, |
94 const SkRect* devBounds); | 93 const SkRect* devBounds); |
95 | 94 |
96 // Draws the clip into the stencil buffer | 95 // Draws the clip into the stencil buffer |
97 bool createStencilClipMask(GrRenderTarget*, | 96 bool createStencilClipMask(GrRenderTarget*, |
98 int32_t elementsGenID, | 97 int32_t elementsGenID, |
99 GrReducedClip::InitialState initialState, | 98 GrReducedClip::InitialState initialState, |
100 const GrReducedClip::ElementList& elements, | 99 const GrReducedClip::ElementList& elements, |
101 const SkIRect& clipSpaceIBounds, | 100 const SkIRect& clipSpaceIBounds, |
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184 kAlpha_ClipMaskType, | 183 kAlpha_ClipMaskType, |
185 } fCurrClipMaskType; | 184 } fCurrClipMaskType; |
186 | 185 |
187 GrClipMaskCache fAACache; // cache for the AA path | 186 GrClipMaskCache fAACache; // cache for the AA path |
188 GrClipTarget* fClipTarget; // This is our owning clip target. | 187 GrClipTarget* fClipTarget; // This is our owning clip target. |
189 StencilClipMode fClipMode; | 188 StencilClipMode fClipMode; |
190 | 189 |
191 typedef SkNoncopyable INHERITED; | 190 typedef SkNoncopyable INHERITED; |
192 }; | 191 }; |
193 #endif // GrClipMaskManager_DEFINED | 192 #endif // GrClipMaskManager_DEFINED |
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