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| 1 /* | 1 /* |
| 2 * Copyright 2015 Google Inc. | 2 * Copyright 2015 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 "GrXferProcessor.h" | 8 #include "GrXferProcessor.h" |
| 9 #include "GrPipelineBuilder.h" | 9 #include "GrPipelineBuilder.h" |
| 10 #include "GrProcOptInfo.h" | 10 #include "GrProcOptInfo.h" |
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| 66 | 66 |
| 67 void GrXferProcessor::getBlendInfo(BlendInfo* blendInfo) const { | 67 void GrXferProcessor::getBlendInfo(BlendInfo* blendInfo) const { |
| 68 blendInfo->reset(); | 68 blendInfo->reset(); |
| 69 if (!this->willReadDstColor()) { | 69 if (!this->willReadDstColor()) { |
| 70 this->onGetBlendInfo(blendInfo); | 70 this->onGetBlendInfo(blendInfo); |
| 71 } else if (this->dstReadUsesMixedSamples()) { | 71 } else if (this->dstReadUsesMixedSamples()) { |
| 72 blendInfo->fDstBlend = kIS2A_GrBlendCoeff; | 72 blendInfo->fDstBlend = kIS2A_GrBlendCoeff; |
| 73 } | 73 } |
| 74 } | 74 } |
| 75 | 75 |
| 76 void GrXferProcessor::getGLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBu
ilder* b) const { | 76 void GrXferProcessor::getGLSLProcessorKey(const GrGLSLCaps& caps, GrProcessorKey
Builder* b) const { |
| 77 uint32_t key = this->willReadDstColor() ? 0x1 : 0x0; | 77 uint32_t key = this->willReadDstColor() ? 0x1 : 0x0; |
| 78 if (key) { | 78 if (key) { |
| 79 if (const GrTexture* dstTexture = this->getDstTexture()) { | 79 if (const GrTexture* dstTexture = this->getDstTexture()) { |
| 80 key |= 0x2; | 80 key |= 0x2; |
| 81 if (kTopLeft_GrSurfaceOrigin == dstTexture->origin()) { | 81 if (kTopLeft_GrSurfaceOrigin == dstTexture->origin()) { |
| 82 key |= 0x4; | 82 key |= 0x4; |
| 83 } | 83 } |
| 84 } | 84 } |
| 85 if (this->readsCoverage()) { | 85 if (this->readsCoverage()) { |
| 86 key |= 0x8; | 86 key |= 0x8; |
| 87 } | 87 } |
| 88 if (this->dstReadUsesMixedSamples()) { | 88 if (this->dstReadUsesMixedSamples()) { |
| 89 key |= 0x10; | 89 key |= 0x10; |
| 90 } | 90 } |
| 91 } | 91 } |
| 92 b->add32(key); | 92 b->add32(key); |
| 93 this->onGetGLProcessorKey(caps, b); | 93 this->onGetGLSLProcessorKey(caps, b); |
| 94 } | 94 } |
| 95 | 95 |
| 96 GrXferBarrierType GrXferProcessor::xferBarrierType(const GrRenderTarget* rt, | 96 GrXferBarrierType GrXferProcessor::xferBarrierType(const GrRenderTarget* rt, |
| 97 const GrCaps& caps) const { | 97 const GrCaps& caps) const { |
| 98 SkASSERT(rt); | 98 SkASSERT(rt); |
| 99 if (static_cast<const GrSurface*>(rt) == this->getDstTexture()) { | 99 if (static_cast<const GrSurface*>(rt) == this->getDstTexture()) { |
| 100 // Texture barriers are required when a shader reads and renders to the
same texture. | 100 // Texture barriers are required when a shader reads and renders to the
same texture. |
| 101 SkASSERT(caps.textureBarrierSupport()); | 101 SkASSERT(caps.textureBarrierSupport()); |
| 102 return kTexture_GrXferBarrierType; | 102 return kTexture_GrXferBarrierType; |
| 103 } | 103 } |
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| 220 return this->onCreateXferProcessor(caps, colorPOI, coveragePOI, hasMixedSamp
les, dstTexture); | 220 return this->onCreateXferProcessor(caps, colorPOI, coveragePOI, hasMixedSamp
les, dstTexture); |
| 221 } | 221 } |
| 222 | 222 |
| 223 bool GrXPFactory::willNeedDstTexture(const GrCaps& caps, | 223 bool GrXPFactory::willNeedDstTexture(const GrCaps& caps, |
| 224 const GrProcOptInfo& colorPOI, | 224 const GrProcOptInfo& colorPOI, |
| 225 const GrProcOptInfo& coveragePOI, | 225 const GrProcOptInfo& coveragePOI, |
| 226 bool hasMixedSamples) const { | 226 bool hasMixedSamples) const { |
| 227 return (this->willReadDstColor(caps, colorPOI, coveragePOI, hasMixedSamples)
&& | 227 return (this->willReadDstColor(caps, colorPOI, coveragePOI, hasMixedSamples)
&& |
| 228 !caps.shaderCaps()->dstReadInShaderSupport()); | 228 !caps.shaderCaps()->dstReadInShaderSupport()); |
| 229 } | 229 } |
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