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Side by Side Diff: src/gpu/gl/builders/GrGLLegacyNvprProgramBuilder.cpp

Issue 635533005: Revert of Cleanup of shader building system (Closed) Base URL: https://skia.googlesource.com/skia.git@solo_gp
Patch Set: Created 6 years, 2 months ago
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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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