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

Issue 929503002: Multi-string shaders (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: windows warning Created 5 years, 10 months ago
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1 /* 1 /*
2 * Copyright 2014 Google Inc. 2 * Copyright 2014 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 "GrGLGeometryShaderBuilder.h" 8 #include "GrGLGeometryShaderBuilder.h"
9 #include "GrGLShaderStringBuilder.h"
10 #include "GrGLProgramBuilder.h" 9 #include "GrGLProgramBuilder.h"
11 #include "../GrGLGpu.h" 10 #include "../GrGLGpu.h"
12 11
13 GrGLGeometryBuilder::GrGLGeometryBuilder(GrGLProgramBuilder* program) 12 GrGLGeometryBuilder::GrGLGeometryBuilder(GrGLProgramBuilder* program)
14 : INHERITED(program) { 13 : INHERITED(program) {
15 14
16 } 15 }
17 16
18 void GrGLGeometryBuilder::addVarying(const char* name, GrGLVarying* v) { 17 void GrGLGeometryBuilder::addVarying(const char* name, GrGLVarying* v) {
19 // if we have a GS take each varying in as an array 18 // if we have a GS take each varying in as an array
(...skipping 10 matching lines...) Expand all
30 if (v->fsVarying()) { 29 if (v->fsVarying()) {
31 fOutputs.push_back(); 30 fOutputs.push_back();
32 fOutputs.back().setType(v->fType); 31 fOutputs.back().setType(v->fType);
33 fOutputs.back().setTypeModifier(GrGLShaderVar::kVaryingOut_TypeModifier) ; 32 fOutputs.back().setTypeModifier(GrGLShaderVar::kVaryingOut_TypeModifier) ;
34 fProgramBuilder->nameVariable(fOutputs.back().accessName(), 'g', name); 33 fProgramBuilder->nameVariable(fOutputs.back().accessName(), 'g', name);
35 v->fGsOut = fOutputs.back().getName().c_str(); 34 v->fGsOut = fOutputs.back().getName().c_str();
36 } 35 }
37 } 36 }
38 37
39 bool GrGLGeometryBuilder::compileAndAttachShaders(GrGLuint programId, 38 bool GrGLGeometryBuilder::compileAndAttachShaders(GrGLuint programId,
40 SkTDArray<GrGLuint>* shaderIds) const { 39 SkTDArray<GrGLuint>* shaderIds) {
41 const GrGLContext& glCtx = fProgramBuilder->gpu()->glContext(); 40 SkFAIL("Geometry shaders are not currently supported");
42 SkASSERT(fProgramBuilder->ctxInfo().glslGeneration() >= k150_GrGLSLGeneratio n); 41 return false;
43 SkString geomShaderSrc(GrGetGLSLVersionDecl(fProgramBuilder->ctxInfo()));
44 geomShaderSrc.append("layout(triangles) in;\n"
45 "layout(triangle_strip, max_vertices = 6) out;\n");
46 this->appendDecls(fInputs, &geomShaderSrc);
47 this->appendDecls(fOutputs, &geomShaderSrc);
48 geomShaderSrc.append("void main() {\n");
49 geomShaderSrc.append("\tfor (int i = 0; i < 3; ++i) {\n"
50 "\t\tgl_Position = gl_in[i].gl_Position;\n");
51 geomShaderSrc.append("\t\tgl_PointSize = 1.0;\n");
52 SkASSERT(fInputs.count() == fOutputs.count());
53 for (int i = 0; i < fInputs.count(); ++i) {
54 geomShaderSrc.appendf("\t\t%s = %s[i];\n",
55 fOutputs[i].getName().c_str(),
56 fInputs[i].getName().c_str());
57 }
58 geomShaderSrc.append("\t\tEmitVertex();\n"
59 "\t}\n"
60 "\tEndPrimitive();\n");
61 geomShaderSrc.append("}\n");
62 GrGLuint geomShaderId =
63 GrGLCompileAndAttachShader(glCtx, programId,
64 GR_GL_GEOMETRY_SHADER, geomShaderSrc,
65 fProgramBuilder->gpu()->stats());
66 if (!geomShaderId) {
67 return false;
68 }
69 *shaderIds->append() = geomShaderId;
70 return true;
71 } 42 }
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