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1 /* | 1 /* |
2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 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 | 7 |
8 | 8 |
9 #ifndef GrGLRenderTarget_DEFINED | 9 #ifndef GrGLRenderTarget_DEFINED |
10 #define GrGLRenderTarget_DEFINED | 10 #define GrGLRenderTarget_DEFINED |
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35 | 35 |
36 // The following two functions return the same ID when a | 36 // The following two functions return the same ID when a |
37 // texture/render target is multisampled, and different IDs when | 37 // texture/render target is multisampled, and different IDs when |
38 // it is. | 38 // it is. |
39 // FBO ID used to render into | 39 // FBO ID used to render into |
40 GrGLuint renderFBOID() const { return fRTFBOID; } | 40 GrGLuint renderFBOID() const { return fRTFBOID; } |
41 // FBO ID that has texture ID attached. | 41 // FBO ID that has texture ID attached. |
42 GrGLuint textureFBOID() const { return fTexFBOID; } | 42 GrGLuint textureFBOID() const { return fTexFBOID; } |
43 | 43 |
44 // override of GrRenderTarget | 44 // override of GrRenderTarget |
45 virtual GrBackendObject getRenderTargetHandle() const SK_OVERRIDE { return t
his->renderFBOID(); } | 45 GrBackendObject getRenderTargetHandle() const SK_OVERRIDE { return this->ren
derFBOID(); } |
46 virtual GrBackendObject getRenderTargetResolvedHandle() const SK_OVERRIDE {
return this->textureFBOID(); } | 46 GrBackendObject getRenderTargetResolvedHandle() const SK_OVERRIDE { return t
his->textureFBOID(); } |
47 virtual ResolveType getResolveType() const SK_OVERRIDE { | 47 ResolveType getResolveType() const SK_OVERRIDE { |
48 if (!this->isMultisampled() || | 48 if (!this->isMultisampled() || |
49 fRTFBOID == fTexFBOID) { | 49 fRTFBOID == fTexFBOID) { |
50 // catches FBO 0 and non MSAA case | 50 // catches FBO 0 and non MSAA case |
51 return kAutoResolves_ResolveType; | 51 return kAutoResolves_ResolveType; |
52 } else if (kUnresolvableFBOID == fTexFBOID) { | 52 } else if (kUnresolvableFBOID == fTexFBOID) { |
53 return kCantResolve_ResolveType; | 53 return kCantResolve_ResolveType; |
54 } else { | 54 } else { |
55 return kCanResolve_ResolveType; | 55 return kCanResolve_ResolveType; |
56 } | 56 } |
57 } | 57 } |
58 | 58 |
59 protected: | 59 protected: |
60 // The public constructor registers this object with the cache. However, onl
y the most derived | 60 // The public constructor registers this object with the cache. However, onl
y the most derived |
61 // class should register with the cache. This constructor does not do the re
gistration and | 61 // class should register with the cache. This constructor does not do the re
gistration and |
62 // rather moves that burden onto the derived class. | 62 // rather moves that burden onto the derived class. |
63 enum Derived { kDerived }; | 63 enum Derived { kDerived }; |
64 GrGLRenderTarget(GrGLGpu*, const GrSurfaceDesc&, const IDDesc&, Derived); | 64 GrGLRenderTarget(GrGLGpu*, const GrSurfaceDesc&, const IDDesc&, Derived); |
65 | 65 |
66 void init(const GrSurfaceDesc&, const IDDesc&); | 66 void init(const GrSurfaceDesc&, const IDDesc&); |
67 | 67 |
68 virtual void onAbandon() SK_OVERRIDE; | 68 void onAbandon() SK_OVERRIDE; |
69 virtual void onRelease() SK_OVERRIDE; | 69 void onRelease() SK_OVERRIDE; |
70 | 70 |
71 // In protected because subclass GrGLTextureRenderTarget calls this version. | 71 // In protected because subclass GrGLTextureRenderTarget calls this version. |
72 virtual size_t onGpuMemorySize() const SK_OVERRIDE; | 72 size_t onGpuMemorySize() const SK_OVERRIDE; |
73 | 73 |
74 private: | 74 private: |
75 GrGLuint fRTFBOID; | 75 GrGLuint fRTFBOID; |
76 GrGLuint fTexFBOID; | 76 GrGLuint fTexFBOID; |
77 GrGLuint fMSColorRenderbufferID; | 77 GrGLuint fMSColorRenderbufferID; |
78 | 78 |
79 // We track this separately from GrGpuResource because this may be both a te
xture and a render | 79 // We track this separately from GrGpuResource because this may be both a te
xture and a render |
80 // target, and the texture may be wrapped while the render target is not. | 80 // target, and the texture may be wrapped while the render target is not. |
81 bool fIsWrapped; | 81 bool fIsWrapped; |
82 | 82 |
83 // when we switch to this render target we want to set the viewport to | 83 // when we switch to this render target we want to set the viewport to |
84 // only render to content area (as opposed to the whole allocation) and | 84 // only render to content area (as opposed to the whole allocation) and |
85 // we want the rendering to be at top left (GL has origin in bottom left) | 85 // we want the rendering to be at top left (GL has origin in bottom left) |
86 GrGLIRect fViewport; | 86 GrGLIRect fViewport; |
87 | 87 |
88 // onGpuMemorySize() needs to know what how many color values are owned per
pixel. However, | 88 // onGpuMemorySize() needs to know what how many color values are owned per
pixel. However, |
89 // abandon and release zero out the IDs and the cache needs to know the size
even after those | 89 // abandon and release zero out the IDs and the cache needs to know the size
even after those |
90 // actions. | 90 // actions. |
91 uint8_t fColorValuesPerPixel; | 91 uint8_t fColorValuesPerPixel; |
92 | 92 |
93 typedef GrRenderTarget INHERITED; | 93 typedef GrRenderTarget INHERITED; |
94 }; | 94 }; |
95 | 95 |
96 #endif | 96 #endif |
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