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1 /* | |
2 * Copyright 2014 Google Inc. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license that can be | |
5 * found in the LICENSE file. | |
6 */ | |
7 | |
8 #include "GrGLNvprProgramBuilder.h" | |
9 #include "../GrGpuGL.h" | |
10 | |
11 #define GL_CALL(X) GR_GL_CALL(this->gpu()->glInterface(), X) | |
12 #define GL_CALL_RET(R, X) GR_GL_CALL_RET(this->gpu()->glInterface(), R, X) | |
13 | |
14 GrGLNvprProgramBuilder::GrGLNvprProgramBuilder(GrGpuGL* gpu, | |
15 const GrOptDrawState& optState, | |
16 const GrGLProgramDesc& desc) | |
17 : INHERITED(gpu, optState, desc) | |
18 , fSeparableVaryingInfos(kVarsPerBlock) { | |
19 } | |
20 | |
21 void GrGLNvprProgramBuilder::emitTransforms(const GrProcessorStage& processorSta
ge, | |
22 GrGLProcessor::TransformedCoordsArra
y* outCoords, | |
23 GrGLInstalledProcessors* installedPr
ocessors) { | |
24 const GrProcessor* effect = processorStage.getProcessor(); | |
25 int numTransforms = effect->numTransforms(); | |
26 | |
27 SkTArray<GrGLInstalledProcessors::Transform, true>& transforms = | |
28 installedProcessors->addTransforms(); | |
29 transforms.push_back_n(numTransforms); | |
30 | |
31 for (int t = 0; t < numTransforms; t++) { | |
32 GrSLType varyingType = | |
33 processorStage.isPerspectiveCoordTransform(t, false) ? | |
34 kVec3f_GrSLType : | |
35 kVec2f_GrSLType; | |
36 | |
37 const char* varyingName = "MatrixCoord"; | |
38 SkString suffixedVaryingName; | |
39 if (0 != t) { | |
40 suffixedVaryingName.append(varyingName); | |
41 suffixedVaryingName.appendf("_%i", t); | |
42 varyingName = suffixedVaryingName.c_str(); | |
43 } | |
44 const char* vsVaryingName; | |
45 const char* fsVaryingName; | |
46 transforms[t].fHandle = this->addSeparableVarying(varyingType, varyingNa
me, | |
47 &vsVaryingName, &fsVar
yingName); | |
48 transforms[t].fType = varyingType; | |
49 | |
50 SkNEW_APPEND_TO_TARRAY(outCoords, GrGLProcessor::TransformedCoords, | |
51 (SkString(fsVaryingName), varyingType)); | |
52 } | |
53 } | |
54 | |
55 GrGLInstalledProcessors::ShaderVarHandle | |
56 GrGLNvprProgramBuilder::addSeparableVarying(GrSLType type, | |
57 const char* name, | |
58 const char** vsOutName, | |
59 const char** fsInName) { | |
60 addVarying(type, name, vsOutName, fsInName); | |
61 SeparableVaryingInfo& varying = fSeparableVaryingInfos.push_back(); | |
62 varying.fVariable = fFS.fInputs.back(); | |
63 return GrGLInstalledProcessors::ShaderVarHandle(fSeparableVaryingInfos.count
() - 1); | |
64 } | |
65 | |
66 void GrGLNvprProgramBuilder::resolveSeparableVaryings(GrGLuint programId) { | |
67 int count = fSeparableVaryingInfos.count(); | |
68 for (int i = 0; i < count; ++i) { | |
69 GrGLint location; | |
70 GL_CALL_RET(location, | |
71 GetProgramResourceLocation(programId, | |
72 GR_GL_FRAGMENT_INPUT, | |
73 fSeparableVaryingInfos[i].fVariab
le.c_str())); | |
74 fSeparableVaryingInfos[i].fLocation = location; | |
75 } | |
76 } | |
77 | |
78 GrGLProgram* GrGLNvprProgramBuilder::createProgram(GrGLuint programID) { | |
79 // this is just for nvpr es, which has separable varyings that are plugged i
n after | |
80 // building | |
81 this->resolveSeparableVaryings(programID); | |
82 return SkNEW_ARGS(GrGLNvprProgram, (fGpu, fDesc, fUniformHandles, programID,
fUniforms, | |
83 fColorEffects, fCoverageEffects, fSepara
bleVaryingInfos)); | |
84 } | |
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