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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 "GrGLSLFragmentProcessor.h" | 8 #include "GrGLSLFragmentProcessor.h" |
9 #include "GrFragmentProcessor.h" | 9 #include "GrFragmentProcessor.h" |
10 #include "GrProcessor.h" | 10 #include "GrProcessor.h" |
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68 * So if we're inside proc A's emitCode, and A is about to call emitCode on
proc D, we want the | 68 * So if we're inside proc A's emitCode, and A is about to call emitCode on
proc D, we want the |
69 * EmitArgs that's passed onto D to only contain its and its descendants' co
ords. The | 69 * EmitArgs that's passed onto D to only contain its and its descendants' co
ords. The |
70 * EmitArgs given to A would contain the transforms [a1,b1,b2,c1,d1,e1,e2,e3
,f1,f2], and we want | 70 * EmitArgs given to A would contain the transforms [a1,b1,b2,c1,d1,e1,e2,e3
,f1,f2], and we want |
71 * to extract the subset [d1,e1,e2,e3,f1,f2] to pass on to D. We can do this
with a linear | 71 * to extract the subset [d1,e1,e2,e3,f1,f2] to pass on to D. We can do this
with a linear |
72 * search since we know that A has 1 transform (using A.numTransformsExclChi
ldren()), and B's | 72 * search since we know that A has 1 transform (using A.numTransformsExclChi
ldren()), and B's |
73 * subtree has 3 transforms (using B.numTransforms()), so we know the start
of D's transforms is | 73 * subtree has 3 transforms (using B.numTransforms()), so we know the start
of D's transforms is |
74 * 4 after the start of A's transforms. | 74 * 4 after the start of A's transforms. |
75 * Textures work the same way as transforms. | 75 * Textures work the same way as transforms. |
76 */ | 76 */ |
77 int firstCoordAt = args.fFp.numTransformsExclChildren(); | 77 int firstCoordAt = args.fFp.numTransformsExclChildren(); |
78 int firstSamplerAt = args.fFp.numTexturesExclChildren(); | 78 int firstTextureAt = args.fFp.numTexturesExclChildren(); |
| 79 int firstBufferAt = args.fFp.numBuffersExclChildren(); |
79 for (int i = 0; i < childIndex; ++i) { | 80 for (int i = 0; i < childIndex; ++i) { |
80 firstCoordAt += args.fFp.childProcessor(i).numTransforms(); | 81 firstCoordAt += args.fFp.childProcessor(i).numTransforms(); |
81 firstSamplerAt += args.fFp.childProcessor(i).numTextures(); | 82 firstTextureAt += args.fFp.childProcessor(i).numTextures(); |
| 83 firstBufferAt += args.fFp.childProcessor(i).numBuffers(); |
82 } | 84 } |
83 GrGLSLTransformedCoordsArray childCoords; | 85 GrGLSLTransformedCoordsArray childCoords; |
84 SamplerArray childTexSamplers; | 86 SamplerArray childTexSamplers; |
| 87 SamplerArray childBufferSamplers; |
85 if (childProc.numTransforms() > 0) { | 88 if (childProc.numTransforms() > 0) { |
86 childCoords.push_back_n(childProc.numTransforms(), &args.fCoords[firstCo
ordAt]); | 89 childCoords.push_back_n(childProc.numTransforms(), &args.fCoords[firstCo
ordAt]); |
87 } | 90 } |
88 if (childProc.numTextures() > 0) { | 91 if (childProc.numTextures() > 0) { |
89 childTexSamplers.push_back_n(childProc.numTextures(), &args.fTexSamplers
[firstSamplerAt]); | 92 childTexSamplers.push_back_n(childProc.numTextures(), &args.fTexSamplers
[firstTextureAt]); |
| 93 } |
| 94 if (childProc.numBuffers() > 0) { |
| 95 childBufferSamplers.push_back_n(childProc.numBuffers(), |
| 96 &args.fBufferSamplers[firstBufferAt]); |
90 } | 97 } |
91 | 98 |
92 // emit the code for the child in its own scope | 99 // emit the code for the child in its own scope |
93 fragBuilder->codeAppend("{\n"); | 100 fragBuilder->codeAppend("{\n"); |
94 fragBuilder->codeAppendf("// Child Index %d (mangle: %s): %s\n", childIndex, | 101 fragBuilder->codeAppendf("// Child Index %d (mangle: %s): %s\n", childIndex, |
95 fragBuilder->getMangleString().c_str(), childProc.n
ame()); | 102 fragBuilder->getMangleString().c_str(), childProc.n
ame()); |
96 EmitArgs childArgs(fragBuilder, | 103 EmitArgs childArgs(fragBuilder, |
97 args.fUniformHandler, | 104 args.fUniformHandler, |
98 args.fGLSLCaps, | 105 args.fGLSLCaps, |
99 childProc, | 106 childProc, |
100 outputColor, | 107 outputColor, |
101 inputColor, | 108 inputColor, |
102 childCoords, | 109 childCoords, |
103 childTexSamplers); | 110 childTexSamplers, |
| 111 childBufferSamplers); |
104 this->childProcessor(childIndex)->emitCode(childArgs); | 112 this->childProcessor(childIndex)->emitCode(childArgs); |
105 fragBuilder->codeAppend("}\n"); | 113 fragBuilder->codeAppend("}\n"); |
106 | 114 |
107 fragBuilder->onAfterChildProcEmitCode(); | 115 fragBuilder->onAfterChildProcEmitCode(); |
108 } | 116 } |
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