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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 #include "SkGr.h" | 8 #include "SkGr.h" |
9 #include "SkColorFilter.h" | 9 #include "SkColorFilter.h" |
10 #include "SkConfig8888.h" | 10 #include "SkConfig8888.h" |
11 #include "SkData.h" | 11 #include "SkData.h" |
12 #include "SkMessageBus.h" | 12 #include "SkMessageBus.h" |
13 #include "SkPixelRef.h" | 13 #include "SkPixelRef.h" |
14 #include "GrResourceCache.h" | 14 #include "GrResourceCache.h" |
15 #include "GrGpu.h" | 15 #include "GrGpu.h" |
| 16 #include "effects/GrDitherEffect.h" |
16 #include "GrDrawTargetCaps.h" | 17 #include "GrDrawTargetCaps.h" |
17 | 18 |
18 #ifndef SK_IGNORE_ETC1_SUPPORT | 19 #ifndef SK_IGNORE_ETC1_SUPPORT |
19 # include "ktx.h" | 20 # include "ktx.h" |
20 # include "etc1.h" | 21 # include "etc1.h" |
21 #endif | 22 #endif |
22 | 23 |
23 /* Fill out buffer with the compressed format Ganesh expects from a colortable | 24 /* Fill out buffer with the compressed format Ganesh expects from a colortable |
24 based bitmap. [palette (colortable) + indices]. | 25 based bitmap. [palette (colortable) + indices]. |
25 | 26 |
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453 if (constantColor) { | 454 if (constantColor) { |
454 SkColor filtered = colorFilter->filterColor(skPaint.getColor()); | 455 SkColor filtered = colorFilter->filterColor(skPaint.getColor()); |
455 grPaint->setColor(SkColor2GrColor(filtered)); | 456 grPaint->setColor(SkColor2GrColor(filtered)); |
456 } else { | 457 } else { |
457 SkAutoTUnref<GrEffectRef> effect(colorFilter->asNewEffect(context)); | 458 SkAutoTUnref<GrEffectRef> effect(colorFilter->asNewEffect(context)); |
458 if (NULL != effect.get()) { | 459 if (NULL != effect.get()) { |
459 grPaint->addColorEffect(effect); | 460 grPaint->addColorEffect(effect); |
460 } | 461 } |
461 } | 462 } |
462 } | 463 } |
| 464 |
| 465 #ifndef SK_IGNORE_GPU_DITHER |
| 466 // If the dither flag is set, then we need to see if the underlying context |
| 467 // supports it. If not, then install a dither effect. |
| 468 if (skPaint.isDither() && grPaint->numColorStages() > 0) { |
| 469 // What are we rendering into? |
| 470 const GrRenderTarget *target = context->getRenderTarget(); |
| 471 SkASSERT(NULL != target); |
| 472 |
| 473 // Suspect the dithering flag has no effect on these configs, otherwise |
| 474 // fall back on setting the appropriate state. |
| 475 if (target->config() == kRGBA_8888_GrPixelConfig || |
| 476 target->config() == kBGRA_8888_GrPixelConfig) { |
| 477 // The dither flag is set and the target is likely |
| 478 // not going to be dithered by the GPU. |
| 479 SkAutoTUnref<GrEffectRef> effect(GrDitherEffect::Create()); |
| 480 if (NULL != effect.get()) { |
| 481 grPaint->addColorEffect(effect); |
| 482 grPaint->setDither(false); |
| 483 } |
| 484 } |
| 485 } |
| 486 #endif |
463 } | 487 } |
464 | 488 |
465 /** | 489 /** |
466 * Unlike GrContext::AutoMatrix, this doesn't require setting a new matrix. GrCo
ntext::AutoMatrix | 490 * Unlike GrContext::AutoMatrix, this doesn't require setting a new matrix. GrCo
ntext::AutoMatrix |
467 * likes to set the new matrix in its constructor because it is usually necessar
y to simulataneously | 491 * likes to set the new matrix in its constructor because it is usually necessar
y to simulataneously |
468 * update a GrPaint. This AutoMatrix is used while initially setting up GrPaint,
however. | 492 * update a GrPaint. This AutoMatrix is used while initially setting up GrPaint,
however. |
469 */ | 493 */ |
470 class AutoMatrix { | 494 class AutoMatrix { |
471 public: | 495 public: |
472 AutoMatrix(GrContext* context) { | 496 AutoMatrix(GrContext* context) { |
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487 SkShader* shader = skPaint.getShader(); | 511 SkShader* shader = skPaint.getShader(); |
488 if (NULL == shader) { | 512 if (NULL == shader) { |
489 SkPaint2GrPaintNoShader(context, skPaint, SkColor2GrColor(skPaint.getCol
or()), | 513 SkPaint2GrPaintNoShader(context, skPaint, SkColor2GrColor(skPaint.getCol
or()), |
490 constantColor, grPaint); | 514 constantColor, grPaint); |
491 return; | 515 return; |
492 } | 516 } |
493 | 517 |
494 // SkShader::asNewEffect() may do offscreen rendering. Save off the current
RT, clip, and | 518 // SkShader::asNewEffect() may do offscreen rendering. Save off the current
RT, clip, and |
495 // matrix. We don't reset the matrix on the context because SkShader::asNewE
ffect may use | 519 // matrix. We don't reset the matrix on the context because SkShader::asNewE
ffect may use |
496 // GrContext::getMatrix() to know the transformation from local coords to de
vice space. | 520 // GrContext::getMatrix() to know the transformation from local coords to de
vice space. |
497 GrContext::AutoRenderTarget art(context, NULL); | 521 GrColor grColor = SkColor2GrColor(skPaint.getColor()); |
498 GrContext::AutoClip ac(context, GrContext::AutoClip::kWideOpen_InitialClip); | |
499 AutoMatrix am(context); | |
500 | 522 |
501 // setup the shader as the first color effect on the paint | 523 // Start a new block here in order to preserve our context state after calli
ng |
502 // the default grColor is the paint's color | 524 // asNewEffect(). Since these calls get passed back to the client, we don't
really |
503 GrColor grColor = SkColor2GrColor(skPaint.getColor()); | 525 // want them messing around with the context. |
504 GrEffectRef* grEffect = NULL; | 526 { |
505 if (shader->asNewEffect(context, skPaint, NULL, &grColor, &grEffect) && NULL
!= grEffect) { | 527 GrContext::AutoRenderTarget art(context, NULL); |
506 SkAutoTUnref<GrEffectRef> effect(grEffect); | 528 GrContext::AutoClip ac(context, GrContext::AutoClip::kWideOpen_InitialCl
ip); |
507 grPaint->addColorEffect(effect); | 529 AutoMatrix am(context); |
508 constantColor = false; | 530 |
| 531 // setup the shader as the first color effect on the paint |
| 532 // the default grColor is the paint's color |
| 533 GrEffectRef* grEffect = NULL; |
| 534 if (shader->asNewEffect(context, skPaint, NULL, &grColor, &grEffect) &&
NULL != grEffect) { |
| 535 SkAutoTUnref<GrEffectRef> effect(grEffect); |
| 536 grPaint->addColorEffect(effect); |
| 537 constantColor = false; |
| 538 } |
509 } | 539 } |
| 540 |
510 // The grcolor is automatically set when calling asneweffect. | 541 // The grcolor is automatically set when calling asneweffect. |
511 // If the shader can be seen as an effect it returns true and adds its effec
t to the grpaint. | 542 // If the shader can be seen as an effect it returns true and adds its effec
t to the grpaint. |
512 SkPaint2GrPaintNoShader(context, skPaint, grColor, constantColor, grPaint); | 543 SkPaint2GrPaintNoShader(context, skPaint, grColor, constantColor, grPaint); |
513 } | 544 } |
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