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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 #ifndef GrGpu_DEFINED | 8 #ifndef GrGpu_DEFINED |
9 #define GrGpu_DEFINED | 9 #define GrGpu_DEFINED |
10 | 10 |
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64 fResetBits |= state; | 64 fResetBits |= state; |
65 } | 65 } |
66 | 66 |
67 void unimpl(const char[]); | 67 void unimpl(const char[]); |
68 | 68 |
69 /** | 69 /** |
70 * Creates a texture object. If desc width or height is not a power of | 70 * Creates a texture object. If desc width or height is not a power of |
71 * two but underlying API requires a power of two texture then srcData | 71 * two but underlying API requires a power of two texture then srcData |
72 * will be embedded in a power of two texture. The extra width and height | 72 * will be embedded in a power of two texture. The extra width and height |
73 * is filled as though srcData were rendered clamped into the texture. | 73 * is filled as though srcData were rendered clamped into the texture. |
| 74 * The exception is when using compressed data formats. In this case, the |
| 75 * desc width and height must be a multiple of the compressed format block |
| 76 * size otherwise this function returns NULL. Similarly, if the underlying |
| 77 * API requires a power of two texture and the source width and height are n
ot |
| 78 * a power of two, then this function returns NULL. |
74 * | 79 * |
75 * If kRenderTarget_TextureFlag is specified the GrRenderTarget is | 80 * If kRenderTarget_TextureFlag is specified the GrRenderTarget is |
76 * accessible via GrTexture::asRenderTarget(). The texture will hold a ref | 81 * accessible via GrTexture::asRenderTarget(). The texture will hold a ref |
77 * on the render target until the texture is destroyed. | 82 * on the render target until the texture is destroyed. Compressed textures |
| 83 * cannot have the kRenderTarget_TextureFlag set. |
78 * | 84 * |
79 * @param desc describes the texture to be created. | 85 * @param desc describes the texture to be created. |
80 * @param srcData texel data to load texture. Begins with full-size | 86 * @param srcData texel data to load texture. Begins with full-size |
81 * palette data for paletted textures. Contains width* | 87 * palette data for paletted textures. For compressed |
82 * height texels. If NULL texture data is uninitialized. | 88 * formats it contains the compressed pixel data. Otherwi
se, |
| 89 * it contains width*height texels. If NULL texture data |
| 90 * is uninitialized. |
| 91 * @param rowBytes the number of bytes between consecutive rows. Zero |
| 92 * means rows are tightly packed. This field is ignored |
| 93 * for compressed formats. |
83 * | 94 * |
84 * @return The texture object if successful, otherwise NULL. | 95 * @return The texture object if successful, otherwise NULL. |
85 */ | 96 */ |
86 GrTexture* createTexture(const GrTextureDesc& desc, | 97 GrTexture* createTexture(const GrTextureDesc& desc, |
87 const void* srcData, size_t rowBytes); | 98 const void* srcData, size_t rowBytes); |
88 | 99 |
89 /** | 100 /** |
90 * Implements GrContext::wrapBackendTexture | 101 * Implements GrContext::wrapBackendTexture |
91 */ | 102 */ |
92 GrTexture* wrapBackendTexture(const GrBackendTextureDesc&); | 103 GrTexture* wrapBackendTexture(const GrBackendTextureDesc&); |
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407 | 418 |
408 | 419 |
409 // called when the 3D context state is unknown. Subclass should emit any | 420 // called when the 3D context state is unknown. Subclass should emit any |
410 // assumed 3D context state and dirty any state cache. | 421 // assumed 3D context state and dirty any state cache. |
411 virtual void onResetContext(uint32_t resetBits) = 0; | 422 virtual void onResetContext(uint32_t resetBits) = 0; |
412 | 423 |
413 // overridden by backend-specific derived class to create objects. | 424 // overridden by backend-specific derived class to create objects. |
414 virtual GrTexture* onCreateTexture(const GrTextureDesc& desc, | 425 virtual GrTexture* onCreateTexture(const GrTextureDesc& desc, |
415 const void* srcData, | 426 const void* srcData, |
416 size_t rowBytes) = 0; | 427 size_t rowBytes) = 0; |
| 428 virtual GrTexture* onCreateCompressedTexture(const GrTextureDesc& desc, |
| 429 const void* srcData) = 0; |
417 virtual GrTexture* onWrapBackendTexture(const GrBackendTextureDesc&) = 0; | 430 virtual GrTexture* onWrapBackendTexture(const GrBackendTextureDesc&) = 0; |
418 virtual GrRenderTarget* onWrapBackendRenderTarget(const GrBackendRenderTarge
tDesc&) = 0; | 431 virtual GrRenderTarget* onWrapBackendRenderTarget(const GrBackendRenderTarge
tDesc&) = 0; |
419 virtual GrVertexBuffer* onCreateVertexBuffer(size_t size, bool dynamic) = 0; | 432 virtual GrVertexBuffer* onCreateVertexBuffer(size_t size, bool dynamic) = 0; |
420 virtual GrIndexBuffer* onCreateIndexBuffer(size_t size, bool dynamic) = 0; | 433 virtual GrIndexBuffer* onCreateIndexBuffer(size_t size, bool dynamic) = 0; |
421 virtual GrPath* onCreatePath(const SkPath& path, const SkStrokeRec&) = 0; | 434 virtual GrPath* onCreatePath(const SkPath& path, const SkStrokeRec&) = 0; |
422 | 435 |
423 // overridden by backend-specific derived class to perform the clear and | 436 // overridden by backend-specific derived class to perform the clear and |
424 // clearRect. NULL rect means clear whole target. If canIgnoreRect is | 437 // clearRect. NULL rect means clear whole target. If canIgnoreRect is |
425 // true, it is okay to perform a full clear instead of a partial clear | 438 // true, it is okay to perform a full clear instead of a partial clear |
426 virtual void onClear(const SkIRect* rect, GrColor color, bool canIgnoreRect)
= 0; | 439 virtual void onClear(const SkIRect* rect, GrColor color, bool canIgnoreRect)
= 0; |
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514 // these are mutable so they can be created on-demand | 527 // these are mutable so they can be created on-demand |
515 mutable GrIndexBuffer* fQuadInd
exBuffer; | 528 mutable GrIndexBuffer* fQuadInd
exBuffer; |
516 // Used to abandon/release all resources created by this GrGpu. TODO: Move t
his | 529 // Used to abandon/release all resources created by this GrGpu. TODO: Move t
his |
517 // functionality to GrResourceCache. | 530 // functionality to GrResourceCache. |
518 ObjectList fObjectL
ist; | 531 ObjectList fObjectL
ist; |
519 | 532 |
520 typedef GrDrawTarget INHERITED; | 533 typedef GrDrawTarget INHERITED; |
521 }; | 534 }; |
522 | 535 |
523 #endif | 536 #endif |
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