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Side by Side Diff: src/gpu/GrClipMaskManager.h

Issue 1330353006: Remove GrClipTarget (Closed) Base URL: https://skia.googlesource.com/skia.git@cliptarget
Patch Set: rebase Created 5 years, 3 months ago
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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"
11 #include "GrPipelineBuilder.h" 11 #include "GrPipelineBuilder.h"
12 #include "GrReducedClip.h" 12 #include "GrReducedClip.h"
13 #include "GrStencil.h" 13 #include "GrStencil.h"
14 #include "GrTexture.h" 14 #include "GrTexture.h"
15 #include "SkClipStack.h" 15 #include "SkClipStack.h"
16 #include "SkDeque.h" 16 #include "SkDeque.h"
17 #include "SkPath.h" 17 #include "SkPath.h"
18 #include "SkRefCnt.h" 18 #include "SkRefCnt.h"
19 #include "SkTLList.h" 19 #include "SkTLList.h"
20 #include "SkTypes.h" 20 #include "SkTypes.h"
21 21
22 class GrClipTarget; 22 class GrDrawTarget;
23 class GrPathRenderer; 23 class GrPathRenderer;
24 class GrPathRendererChain; 24 class GrPathRendererChain;
25 class GrTexture; 25 class GrTexture;
26 class SkPath; 26 class SkPath;
27 /** 27 /**
28 * The clip mask creator handles the generation of the clip mask. If anti 28 * The clip mask creator handles the generation of the clip mask. If anti
29 * aliasing is requested it will (in the future) generate a single channel 29 * aliasing is requested it will (in the future) generate a single channel
30 * (8bit) mask. If no anti aliasing is requested it will generate a 1-bit 30 * (8bit) mask. If no anti aliasing is requested it will generate a 1-bit
31 * mask in the stencil buffer. In the non anti-aliasing case, if the clip 31 * mask in the stencil buffer. In the non anti-aliasing case, if the clip
32 * mask can be represented as a rectangle then scissoring is used. In all 32 * mask can be represented as a rectangle then scissoring is used. In all
33 * cases scissoring is used to bound the range of the clip mask. 33 * cases scissoring is used to bound the range of the clip mask.
34 */ 34 */
35 class GrClipMaskManager : SkNoncopyable { 35 class GrClipMaskManager : SkNoncopyable {
36 public: 36 public:
37 GrClipMaskManager(GrClipTarget* owner); 37 GrClipMaskManager(GrDrawTarget* 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::AutoRestoreFragmentProcessorState*, 47 GrPipelineBuilder::AutoRestoreFragmentProcessorState*,
48 GrPipelineBuilder::AutoRestoreStencil*, 48 GrPipelineBuilder::AutoRestoreStencil*,
49 GrScissorState*, 49 GrScissorState*,
50 const SkRect* devBounds); 50 const SkRect* devBounds);
51 51
52 /** 52 /**
53 * 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
54 * which will allow Resourcecache to automatically purge anything this class has created. 54 * which will allow GrResourceCache to automatically purge anything this cla ss has created.
55 */ 55 */
56 void purgeResources(); 56 void purgeResources();
57 57
58 bool isClipInStencil() const { 58 bool isClipInStencil() const {
59 return kStencil_ClipMaskType == fCurrClipMaskType; 59 return kStencil_ClipMaskType == fCurrClipMaskType;
60 } 60 }
61 61
62 bool isClipInAlpha() const { 62 bool isClipInAlpha() const {
63 return kAlpha_ClipMaskType == fCurrClipMaskType; 63 return kAlpha_ClipMaskType == fCurrClipMaskType;
64 } 64 }
65 65
66 void setClipTarget(GrClipTarget*);
67
68 void adjustPathStencilParams(const GrStencilAttachment*, GrStencilSettings*) ; 66 void adjustPathStencilParams(const GrStencilAttachment*, GrStencilSettings*) ;
69 67
70 private: 68 private:
71 inline GrContext* getContext(); 69 inline GrContext* getContext();
72 70
73 /** 71 /**
74 * Informs the helper function adjustStencilParams() about how the stencil 72 * Informs the helper function adjustStencilParams() about how the stencil
75 * buffer clip is being used. 73 * buffer clip is being used.
76 */ 74 */
77 enum StencilClipMode { 75 enum StencilClipMode {
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177 * texture. It may be neither because the scissor rect suffices or we 175 * texture. It may be neither because the scissor rect suffices or we
178 * haven't yet examined the clip. 176 * haven't yet examined the clip.
179 */ 177 */
180 enum ClipMaskType { 178 enum ClipMaskType {
181 kNone_ClipMaskType, 179 kNone_ClipMaskType,
182 kStencil_ClipMaskType, 180 kStencil_ClipMaskType,
183 kAlpha_ClipMaskType, 181 kAlpha_ClipMaskType,
184 } fCurrClipMaskType; 182 } fCurrClipMaskType;
185 183
186 GrClipMaskCache fAACache; // cache for the AA path 184 GrClipMaskCache fAACache; // cache for the AA path
187 GrClipTarget* fClipTarget; // This is our owning clip target. 185 GrDrawTarget* fDrawTarget; // This is our owning draw target.
188 StencilClipMode fClipMode; 186 StencilClipMode fClipMode;
189 187
190 typedef SkNoncopyable INHERITED; 188 typedef SkNoncopyable INHERITED;
191 }; 189 };
192 #endif // GrClipMaskManager_DEFINED 190 #endif // GrClipMaskManager_DEFINED
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