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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 GrDrawState_DEFINED | 8 #ifndef GrDrawState_DEFINED |
9 #define GrDrawState_DEFINED | 9 #define GrDrawState_DEFINED |
10 | 10 |
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373 /// @name Render Target | 373 /// @name Render Target |
374 //// | 374 //// |
375 | 375 |
376 /** | 376 /** |
377 * Sets the render-target used at the next drawing call | 377 * Sets the render-target used at the next drawing call |
378 * | 378 * |
379 * @param target The render target to set. | 379 * @param target The render target to set. |
380 */ | 380 */ |
381 void setRenderTarget(GrRenderTarget* target) { fRenderTarget.reset(SkSafeRef
(target)); } | 381 void setRenderTarget(GrRenderTarget* target) { fRenderTarget.reset(SkSafeRef
(target)); } |
382 | 382 |
383 class AutoRenderTargetRestore : public ::SkNoncopyable { | |
384 public: | |
385 AutoRenderTargetRestore() : fDrawState(NULL), fSavedTarget(NULL) {} | |
386 AutoRenderTargetRestore(GrDrawState* ds, GrRenderTarget* newTarget) { | |
387 fDrawState = NULL; | |
388 fSavedTarget = NULL; | |
389 this->set(ds, newTarget); | |
390 } | |
391 ~AutoRenderTargetRestore() { this->restore(); } | |
392 | |
393 void restore() { | |
394 if (NULL != fDrawState) { | |
395 fDrawState->setRenderTarget(fSavedTarget); | |
396 fDrawState = NULL; | |
397 } | |
398 SkSafeSetNull(fSavedTarget); | |
399 } | |
400 | |
401 void set(GrDrawState* ds, GrRenderTarget* newTarget) { | |
402 this->restore(); | |
403 | |
404 if (NULL != ds) { | |
405 SkASSERT(NULL == fSavedTarget); | |
406 fSavedTarget = ds->getRenderTarget(); | |
407 SkSafeRef(fSavedTarget); | |
408 ds->setRenderTarget(newTarget); | |
409 fDrawState = ds; | |
410 } | |
411 } | |
412 private: | |
413 GrDrawState* fDrawState; | |
414 GrRenderTarget* fSavedTarget; | |
415 }; | |
416 | |
417 /// @} | 383 /// @} |
418 | 384 |
419 /////////////////////////////////////////////////////////////////////////// | 385 /////////////////////////////////////////////////////////////////////////// |
420 /// @name Stencil | 386 /// @name Stencil |
421 //// | 387 //// |
422 | 388 |
423 /** | 389 /** |
424 * Sets the stencil settings to use for the next draw. | 390 * Sets the stencil settings to use for the next draw. |
425 * Changing the clip has the side-effect of possibly zeroing | 391 * Changing the clip has the side-effect of possibly zeroing |
426 * out the client settable stencil bits. So multipass algorithms | 392 * out the client settable stencil bits. So multipass algorithms |
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562 // Some of the auto restore objects assume that no effects are removed durin
g their lifetime. | 528 // Some of the auto restore objects assume that no effects are removed durin
g their lifetime. |
563 // This is used to assert that this condition holds. | 529 // This is used to assert that this condition holds. |
564 SkDEBUGCODE(int fBlockEffectRemovalCnt;) | 530 SkDEBUGCODE(int fBlockEffectRemovalCnt;) |
565 | 531 |
566 void internalSetVertexAttribs(const GrVertexAttrib attribs[], int count, siz
e_t stride); | 532 void internalSetVertexAttribs(const GrVertexAttrib attribs[], int count, siz
e_t stride); |
567 | 533 |
568 typedef GrRODrawState INHERITED; | 534 typedef GrRODrawState INHERITED; |
569 }; | 535 }; |
570 | 536 |
571 #endif | 537 #endif |
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