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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 "GrGLLegacyNvprProgramBuilder.h" | |
9 #include "../GrGpuGL.h" | |
10 | |
11 GrGLLegacyNvprProgramBuilder::GrGLLegacyNvprProgramBuilder(GrGpuGL* gpu, | |
12 const GrOptDrawState&
optState, | |
13 const GrGLProgramDesc
& desc) | |
14 : INHERITED(gpu, optState, desc) | |
15 , fTexCoordSetCnt(0) { | |
16 SkASSERT(GrGLProgramDesc::kAttribute_ColorInput != desc.getHeader().fColorIn
put); | |
17 SkASSERT(GrGLProgramDesc::kAttribute_ColorInput != desc.getHeader().fCoverag
eInput); | |
18 } | |
19 | |
20 int GrGLLegacyNvprProgramBuilder::addTexCoordSets(int count) { | |
21 int firstFreeCoordSet = fTexCoordSetCnt; | |
22 fTexCoordSetCnt += count; | |
23 SkASSERT(gpu()->glCaps().maxFixedFunctionTextureCoords() >= fTexCoordSetCnt)
; | |
24 return firstFreeCoordSet; | |
25 } | |
26 | |
27 void GrGLLegacyNvprProgramBuilder::emitTransforms(const GrProcessorStage& proces
sorStage, | |
28 GrGLProcessor::TransformedCoordsArra
y* outCoords, | |
29 GrGLInstalledProcessors* installedPr
ocessors) { | |
30 int numTransforms = processorStage.getProcessor()->numTransforms(); | |
31 int texCoordIndex = this->addTexCoordSets(numTransforms); | |
32 | |
33 SkTArray<GrGLInstalledProcessors::Transform, true>& transforms = | |
34 installedProcessors->addTransforms(); | |
35 | |
36 // Use the first uniform location as the texcoord index. This may seem a bi
t hacky but it | |
37 // allows us to use one program effects object for all of our programs which
really simplifies | |
38 // the code overall | |
39 transforms.push_back_n(1); | |
40 transforms[0].fHandle = GrGLInstalledProcessors::ShaderVarHandle(texCoordInd
ex); | |
41 | |
42 SkString name; | |
43 for (int t = 0; t < numTransforms; ++t) { | |
44 GrSLType type = processorStage.isPerspectiveCoordTransform(t, false) ? k
Vec3f_GrSLType : | |
45 k
Vec2f_GrSLType; | |
46 | |
47 name.printf("%s(gl_TexCoord[%i])", GrGLSLTypeString(type), texCoordIndex
++); | |
48 SkNEW_APPEND_TO_TARRAY(outCoords, GrGLProcessor::TransformedCoords, (nam
e, type)); | |
49 } | |
50 } | |
51 | |
52 GrGLProgram* GrGLLegacyNvprProgramBuilder::createProgram(GrGLuint programID) { | |
53 return SkNEW_ARGS(GrGLLegacyNvprProgram, (fGpu, fDesc, fUniformHandles, prog
ramID, fUniforms, | |
54 fColorEffects, fCoverageEffects, fTexCo
ordSetCnt)); | |
55 } | |
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