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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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34 * cases scissoring is used to bound the range of the clip mask. | 34 * cases scissoring is used to bound the range of the clip mask. |
35 */ | 35 */ |
36 class GrClipMaskManager : SkNoncopyable { | 36 class GrClipMaskManager : SkNoncopyable { |
37 public: | 37 public: |
38 GrClipMaskManager() | 38 GrClipMaskManager() |
39 : fCurrClipMaskType(kNone_ClipMaskType) | 39 : fCurrClipMaskType(kNone_ClipMaskType) |
40 , fClipTarget(NULL) | 40 , fClipTarget(NULL) |
41 , fClipMode(kIgnoreClip_StencilClipMode) { | 41 , fClipMode(kIgnoreClip_StencilClipMode) { |
42 } | 42 } |
43 | 43 |
44 // The state of the scissor is controlled by the clip manager, no one else s
hould set | |
45 // Scissor state. This should really be on Gpu itself. We should revist th
is when GPU | |
46 // and drawtarget are separate | |
47 struct ScissorState { | |
48 ScissorState() : fEnabled(false) {} | |
49 void set(const SkIRect& rect) { fRect = rect; fEnabled = true; } | |
50 bool operator==(const ScissorState& other) const { | |
51 return fEnabled == other.fEnabled && | |
52 (false == fEnabled || fRect == other.fRect); | |
53 } | |
54 bool operator!=(const ScissorState& other) const { return !(*this == oth
er); } | |
55 bool fEnabled; | |
56 SkIRect fRect; | |
57 }; | |
58 | |
59 /** | 44 /** |
60 * Creates a clip mask if necessary as a stencil buffer or alpha texture | 45 * Creates a clip mask if necessary as a stencil buffer or alpha texture |
61 * and sets the GrGpu's scissor and stencil state. If the return is false | 46 * and sets the GrGpu's scissor and stencil state. If the return is false |
62 * then the draw can be skipped. The AutoRestoreEffects is initialized by | 47 * then the draw can be skipped. The AutoRestoreEffects is initialized by |
63 * the manager when it must install additional effects to implement the | 48 * the manager when it must install additional effects to implement the |
64 * clip. devBounds is optional but can help optimize clipping. | 49 * clip. devBounds is optional but can help optimize clipping. |
65 */ | 50 */ |
66 bool setupClipping(GrDrawState*, | 51 bool setupClipping(GrDrawState*, |
67 GrDrawState::AutoRestoreEffects*, | 52 GrDrawState::AutoRestoreEffects*, |
68 GrDrawState::AutoRestoreStencil*, | 53 GrDrawState::AutoRestoreStencil*, |
69 ScissorState*, | 54 GrScissorState*, |
70 const GrClipData* clipDataIn, | 55 const GrClipData* clipDataIn, |
71 const SkRect* devBounds); | 56 const SkRect* devBounds); |
72 | 57 |
73 /** | 58 /** |
74 * Purge resources to free up memory. TODO: This class shouldn't hold any lo
ng lived refs | 59 * Purge resources to free up memory. TODO: This class shouldn't hold any lo
ng lived refs |
75 * which will allow ResourceCache2 to automatically purge anything this clas
s has created. | 60 * which will allow ResourceCache2 to automatically purge anything this clas
s has created. |
76 */ | 61 */ |
77 void purgeResources(); | 62 void purgeResources(); |
78 | 63 |
79 bool isClipInStencil() const { | 64 bool isClipInStencil() const { |
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202 kAlpha_ClipMaskType, | 187 kAlpha_ClipMaskType, |
203 } fCurrClipMaskType; | 188 } fCurrClipMaskType; |
204 | 189 |
205 GrClipMaskCache fAACache; // cache for the AA path | 190 GrClipMaskCache fAACache; // cache for the AA path |
206 GrClipTarget* fClipTarget; | 191 GrClipTarget* fClipTarget; |
207 StencilClipMode fClipMode; | 192 StencilClipMode fClipMode; |
208 | 193 |
209 typedef SkNoncopyable INHERITED; | 194 typedef SkNoncopyable INHERITED; |
210 }; | 195 }; |
211 #endif // GrClipMaskManager_DEFINED | 196 #endif // GrClipMaskManager_DEFINED |
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