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1 /* | 1 /* |
2 * Copyright 2010 Google Inc. | 2 * Copyright 2010 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 GrDrawTarget_DEFINED | 8 #ifndef GrDrawTarget_DEFINED |
9 #define GrDrawTarget_DEFINED | 9 #define GrDrawTarget_DEFINED |
10 | 10 |
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226 * to index 0 | 226 * to index 0 |
227 * @param startIndex first index to read from index src. | 227 * @param startIndex first index to read from index src. |
228 * @param vertexCount one greater than the max index. | 228 * @param vertexCount one greater than the max index. |
229 * @param indexCount the number of index elements to read. The index count | 229 * @param indexCount the number of index elements to read. The index count |
230 * is effectively trimmed to the last completely | 230 * is effectively trimmed to the last completely |
231 * specified primitive. | 231 * specified primitive. |
232 * @param devBounds optional bounds hint. This is a promise from the call
er, | 232 * @param devBounds optional bounds hint. This is a promise from the call
er, |
233 * not a request for clipping. | 233 * not a request for clipping. |
234 */ | 234 */ |
235 void drawIndexed(GrDrawState*, | 235 void drawIndexed(GrDrawState*, |
| 236 const GrGeometryProcessor*, |
236 GrPrimitiveType type, | 237 GrPrimitiveType type, |
237 int startVertex, | 238 int startVertex, |
238 int startIndex, | 239 int startIndex, |
239 int vertexCount, | 240 int vertexCount, |
240 int indexCount, | 241 int indexCount, |
241 const SkRect* devBounds = NULL); | 242 const SkRect* devBounds = NULL); |
242 | 243 |
243 /** | 244 /** |
244 * Draws non-indexed geometry using the current state and current vertex | 245 * Draws non-indexed geometry using the current state and current vertex |
245 * sources. | 246 * sources. |
246 * | 247 * |
247 * @param type The type of primitives to draw. | 248 * @param type The type of primitives to draw. |
248 * @param startVertex the vertex in the vertex array/buffer corresponding | 249 * @param startVertex the vertex in the vertex array/buffer corresponding |
249 * to index 0 | 250 * to index 0 |
250 * @param vertexCount one greater than the max index. | 251 * @param vertexCount one greater than the max index. |
251 * @param devBounds optional bounds hint. This is a promise from the call
er, | 252 * @param devBounds optional bounds hint. This is a promise from the call
er, |
252 * not a request for clipping. | 253 * not a request for clipping. |
253 */ | 254 */ |
254 void drawNonIndexed(GrDrawState*, | 255 void drawNonIndexed(GrDrawState*, |
| 256 const GrGeometryProcessor*, |
255 GrPrimitiveType type, | 257 GrPrimitiveType type, |
256 int startVertex, | 258 int startVertex, |
257 int vertexCount, | 259 int vertexCount, |
258 const SkRect* devBounds = NULL); | 260 const SkRect* devBounds = NULL); |
259 | 261 |
260 /** | 262 /** |
261 * Draws path into the stencil buffer. The fill must be either even/odd or | 263 * Draws path into the stencil buffer. The fill must be either even/odd or |
262 * winding (not inverse or hairline). It will respect the HW antialias flag | 264 * winding (not inverse or hairline). It will respect the HW antialias flag |
263 * on the draw state (if possible in the 3D API). Note, we will never have
an inverse fill | 265 * on the draw state (if possible in the 3D API). Note, we will never have
an inverse fill |
264 * with stencil path | 266 * with stencil path |
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350 * indicesPerInstance indices drawn as the primitive | 352 * indicesPerInstance indices drawn as the primitive |
351 * type specified by type. | 353 * type specified by type. |
352 * @param verticesPerInstance The number of vertices in each instance (V | 354 * @param verticesPerInstance The number of vertices in each instance (V |
353 * in the above description). | 355 * in the above description). |
354 * @param indicesPerInstance The number of indices in each instance (I | 356 * @param indicesPerInstance The number of indices in each instance (I |
355 * in the above description). | 357 * in the above description). |
356 * @param devBounds optional bounds hint. This is a promise from the call
er, | 358 * @param devBounds optional bounds hint. This is a promise from the call
er, |
357 * not a request for clipping. | 359 * not a request for clipping. |
358 */ | 360 */ |
359 void drawIndexedInstances(GrDrawState*, | 361 void drawIndexedInstances(GrDrawState*, |
| 362 const GrGeometryProcessor*, |
360 GrPrimitiveType type, | 363 GrPrimitiveType type, |
361 int instanceCount, | 364 int instanceCount, |
362 int verticesPerInstance, | 365 int verticesPerInstance, |
363 int indicesPerInstance, | 366 int indicesPerInstance, |
364 const SkRect* devBounds = NULL); | 367 const SkRect* devBounds = NULL); |
365 | 368 |
366 /** | 369 /** |
367 * Clear the passed in render target. Ignores the draw state and clip. Clear
s the whole thing if | 370 * Clear the passed in render target. Ignores the draw state and clip. Clear
s the whole thing if |
368 * rect is NULL, otherwise just the rect. If canIgnoreRect is set then the e
ntire render target | 371 * rect is NULL, otherwise just the rect. If canIgnoreRect is set then the e
ntire render target |
369 * can be optionally cleared. | 372 * can be optionally cleared. |
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649 | 652 |
650 // Subclass must initialize this in its constructor. | 653 // Subclass must initialize this in its constructor. |
651 SkAutoTUnref<const GrDrawTargetCaps> fCaps; | 654 SkAutoTUnref<const GrDrawTargetCaps> fCaps; |
652 | 655 |
653 const GrTraceMarkerSet& getActiveTraceMarkers() { return fActiveTraceMarkers
; } | 656 const GrTraceMarkerSet& getActiveTraceMarkers() { return fActiveTraceMarkers
; } |
654 | 657 |
655 // Makes a copy of the dst if it is necessary for the draw. Returns false if
a copy is required | 658 // Makes a copy of the dst if it is necessary for the draw. Returns false if
a copy is required |
656 // but couldn't be made. Otherwise, returns true. This method needs to be p
rotected because it | 659 // but couldn't be made. Otherwise, returns true. This method needs to be p
rotected because it |
657 // needs to be accessed by GLPrograms to setup a correct drawstate | 660 // needs to be accessed by GLPrograms to setup a correct drawstate |
658 bool setupDstReadIfNecessary(GrDrawState*, | 661 bool setupDstReadIfNecessary(GrDrawState*, |
| 662 const GrPrimitiveProcessor*, |
659 GrColor, | 663 GrColor, |
660 uint8_t, | 664 uint8_t, |
661 GrDeviceCoordTexture* dstCopy, | 665 GrDeviceCoordTexture* dstCopy, |
662 const SkRect* drawBounds); | 666 const SkRect* drawBounds); |
663 | 667 |
664 private: | 668 private: |
665 /** | 669 /** |
666 * This will be called before allocating a texture as a dst for copySurface.
This function | 670 * This will be called before allocating a texture as a dst for copySurface.
This function |
667 * populates the dstDesc's config, flags, and origin so as to maximize effic
iency and guarantee | 671 * populates the dstDesc's config, flags, and origin so as to maximize effic
iency and guarantee |
668 * success of the copySurface call. | 672 * success of the copySurface call. |
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691 virtual bool onReserveVertexSpace(size_t vertexSize, int vertexCount, void**
vertices) = 0; | 695 virtual bool onReserveVertexSpace(size_t vertexSize, int vertexCount, void**
vertices) = 0; |
692 virtual bool onReserveIndexSpace(int indexCount, void** indices) = 0; | 696 virtual bool onReserveIndexSpace(int indexCount, void** indices) = 0; |
693 // implemented by subclass to handle release of reserved geom space | 697 // implemented by subclass to handle release of reserved geom space |
694 virtual void releaseReservedVertexSpace() = 0; | 698 virtual void releaseReservedVertexSpace() = 0; |
695 virtual void releaseReservedIndexSpace() = 0; | 699 virtual void releaseReservedIndexSpace() = 0; |
696 // subclass overrides to be notified just before geo src state is pushed/pop
ped. | 700 // subclass overrides to be notified just before geo src state is pushed/pop
ped. |
697 virtual void geometrySourceWillPush() = 0; | 701 virtual void geometrySourceWillPush() = 0; |
698 virtual void geometrySourceWillPop(const GeometrySrcState& restoredState) =
0; | 702 virtual void geometrySourceWillPop(const GeometrySrcState& restoredState) =
0; |
699 // subclass called to perform drawing | 703 // subclass called to perform drawing |
700 virtual void onDraw(const GrDrawState&, | 704 virtual void onDraw(const GrDrawState&, |
| 705 const GrGeometryProcessor*, |
701 const DrawInfo&, | 706 const DrawInfo&, |
702 const GrClipMaskManager::ScissorState&, | 707 const GrClipMaskManager::ScissorState&, |
703 const GrDeviceCoordTexture* dstCopy) = 0; | 708 const GrDeviceCoordTexture* dstCopy) = 0; |
704 // TODO copy in order drawbuffer onDrawRect to here | 709 // TODO copy in order drawbuffer onDrawRect to here |
705 virtual void onDrawRect(GrDrawState*, | 710 virtual void onDrawRect(GrDrawState*, |
706 GrColor color, | 711 GrColor color, |
707 const SkRect& rect, | 712 const SkRect& rect, |
708 const SkRect* localRect, | 713 const SkRect* localRect, |
709 const SkMatrix* localMatrix) = 0; | 714 const SkMatrix* localMatrix) = 0; |
710 | 715 |
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759 | 764 |
760 // helpers for reserving vertex and index space. | 765 // helpers for reserving vertex and index space. |
761 bool reserveVertexSpace(size_t vertexSize, | 766 bool reserveVertexSpace(size_t vertexSize, |
762 int vertexCount, | 767 int vertexCount, |
763 void** vertices); | 768 void** vertices); |
764 bool reserveIndexSpace(int indexCount, void** indices); | 769 bool reserveIndexSpace(int indexCount, void** indices); |
765 | 770 |
766 // called by drawIndexed and drawNonIndexed. Use a negative indexCount to | 771 // called by drawIndexed and drawNonIndexed. Use a negative indexCount to |
767 // indicate non-indexed drawing. | 772 // indicate non-indexed drawing. |
768 bool checkDraw(const GrDrawState&, | 773 bool checkDraw(const GrDrawState&, |
| 774 const GrGeometryProcessor*, |
769 GrPrimitiveType type, | 775 GrPrimitiveType type, |
770 int startVertex, | 776 int startVertex, |
771 int startIndex, | 777 int startIndex, |
772 int vertexCount, | 778 int vertexCount, |
773 int indexCount) const; | 779 int indexCount) const; |
774 // called when setting a new vert/idx source to unref prev vb/ib | 780 // called when setting a new vert/idx source to unref prev vb/ib |
775 void releasePreviousVertexSource(); | 781 void releasePreviousVertexSource(); |
776 void releasePreviousIndexSource(); | 782 void releasePreviousIndexSource(); |
777 | 783 |
778 // Check to see if this set of draw commands has been sent out | 784 // Check to see if this set of draw commands has been sent out |
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844 virtual bool setupClip(const SkRect* devBounds, | 850 virtual bool setupClip(const SkRect* devBounds, |
845 GrDrawState::AutoRestoreEffects* are, | 851 GrDrawState::AutoRestoreEffects* are, |
846 GrDrawState::AutoRestoreStencil* ars, | 852 GrDrawState::AutoRestoreStencil* ars, |
847 GrDrawState*, | 853 GrDrawState*, |
848 GrClipMaskManager::ScissorState* scissorState) SK_OVE
RRIDE; | 854 GrClipMaskManager::ScissorState* scissorState) SK_OVE
RRIDE; |
849 | 855 |
850 typedef GrDrawTarget INHERITED; | 856 typedef GrDrawTarget INHERITED; |
851 }; | 857 }; |
852 | 858 |
853 #endif | 859 #endif |
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