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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 | 7 |
8 #ifndef SkImagePriv_DEFINED | 8 #ifndef SkImagePriv_DEFINED |
9 #define SkImagePriv_DEFINED | 9 #define SkImagePriv_DEFINED |
10 | 10 |
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68 // surface. This function is used when the surface makes a new texture for itsel
f in order | 68 // surface. This function is used when the surface makes a new texture for itsel
f in order |
69 // for the orphaned image to determine whether the original texture counts again
st the | 69 // for the orphaned image to determine whether the original texture counts again
st the |
70 // budget or not. | 70 // budget or not. |
71 extern void SkTextureImageApplyBudgetedDecision(SkImage* textureImage); | 71 extern void SkTextureImageApplyBudgetedDecision(SkImage* textureImage); |
72 | 72 |
73 // Update the texture wrapped by an image created with NewTexture. This | 73 // Update the texture wrapped by an image created with NewTexture. This |
74 // is called when a surface and image share the same GrTexture and the | 74 // is called when a surface and image share the same GrTexture and the |
75 // surface needs to perform a copy-on-write | 75 // surface needs to perform a copy-on-write |
76 extern void SkTextureImageSetTexture(SkImage* image, GrTexture* texture); | 76 extern void SkTextureImageSetTexture(SkImage* image, GrTexture* texture); |
77 | 77 |
78 GrTexture* GrDeepCopyTexture(GrTexture* src, SkBudgeted); | |
79 | |
80 /** | 78 /** |
81 * Will attempt to upload and lock the contents of the image as a texture, so t
hat subsequent | 79 * Will attempt to upload and lock the contents of the image as a texture, so t
hat subsequent |
82 * draws to a gpu-target will come from that texture (and not by looking at the
original image | 80 * draws to a gpu-target will come from that texture (and not by looking at the
original image |
83 * src). In particular this is intended to use the texture even if the image's
original content | 81 * src). In particular this is intended to use the texture even if the image's
original content |
84 * changes subsequent to this call (i.e. the src is mutable!). | 82 * changes subsequent to this call (i.e. the src is mutable!). |
85 * | 83 * |
86 * This must be balanced by an equal number of calls to SkImage_unpinAsTexture(
) -- calls can be | 84 * This must be balanced by an equal number of calls to SkImage_unpinAsTexture(
) -- calls can be |
87 * nested. | 85 * nested. |
88 * | 86 * |
89 * Once in this "pinned" state, the image has all of the same thread restrictio
ns that exist | 87 * Once in this "pinned" state, the image has all of the same thread restrictio
ns that exist |
90 * for a natively created gpu image (e.g. SkImage::MakeFromTexture) | 88 * for a natively created gpu image (e.g. SkImage::MakeFromTexture) |
91 * - all drawing, pinning, unpinning must happen in the same thread as the GrCo
ntext. | 89 * - all drawing, pinning, unpinning must happen in the same thread as the GrCo
ntext. |
92 */ | 90 */ |
93 void SkImage_pinAsTexture(const SkImage*, GrContext*); | 91 void SkImage_pinAsTexture(const SkImage*, GrContext*); |
94 | 92 |
95 /** | 93 /** |
96 * The balancing call to SkImage_pinAsTexture. When a balanced number of calls
have been made, then | 94 * The balancing call to SkImage_pinAsTexture. When a balanced number of calls
have been made, then |
97 * the "pinned" texture is free to be purged, etc. This also means that a subse
quent "pin" call | 95 * the "pinned" texture is free to be purged, etc. This also means that a subse
quent "pin" call |
98 * will look at the original content again, and if its uniqueID/generationID ha
s changed, then | 96 * will look at the original content again, and if its uniqueID/generationID ha
s changed, then |
99 * a newer texture will be uploaded/pinned. | 97 * a newer texture will be uploaded/pinned. |
100 * | 98 * |
101 * The context passed to unpin must match the one passed to pin. | 99 * The context passed to unpin must match the one passed to pin. |
102 */ | 100 */ |
103 void SkImage_unpinAsTexture(const SkImage*, GrContext*); | 101 void SkImage_unpinAsTexture(const SkImage*, GrContext*); |
104 | 102 |
105 #endif | 103 #endif |
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