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Side by Side Diff: gm/dcshader.cpp

Issue 1251173002: Added GrGLFragmentProcessor::EmitArgs struct for use with emitCode() (Closed) Base URL: https://skia.googlesource.com/skia@composeshader_gpu
Patch Set: Created 5 years, 5 months ago
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1 1
2 /* 2 /*
3 * Copyright 2014 Google Inc. 3 * Copyright 2014 Google Inc.
4 * 4 *
5 * Use of this source code is governed by a BSD-style license that can be 5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file. 6 * found in the LICENSE file.
7 */ 7 */
8 8
9 #include "gm.h" 9 #include "gm.h"
10 #if SK_SUPPORT_GPU 10 #if SK_SUPPORT_GPU
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58 DCFP(GrProcessorDataManager*, const SkMatrix& m) : fDeviceTransform(kDevice_ GrCoordSet, m) { 58 DCFP(GrProcessorDataManager*, const SkMatrix& m) : fDeviceTransform(kDevice_ GrCoordSet, m) {
59 this->addCoordTransform(&fDeviceTransform); 59 this->addCoordTransform(&fDeviceTransform);
60 this->initClassID<DCFP>(); 60 this->initClassID<DCFP>();
61 } 61 }
62 62
63 void getGLProcessorKey(const GrGLSLCaps& caps, 63 void getGLProcessorKey(const GrGLSLCaps& caps,
64 GrProcessorKeyBuilder* b) const override {} 64 GrProcessorKeyBuilder* b) const override {}
65 65
66 GrGLFragmentProcessor* createGLInstance() const override { 66 GrGLFragmentProcessor* createGLInstance() const override {
67 class DCGLFP : public GrGLFragmentProcessor { 67 class DCGLFP : public GrGLFragmentProcessor {
68 void emitCode(GrGLFPBuilder* builder, 68 void emitCode(EmitArgs& args) override {
69 const GrFragmentProcessor& fp, 69 GrGLFragmentBuilder* fpb = args.fBuilder->getFragmentShaderBuild er();
70 const char* outputColor, 70 fpb->codeAppendf("vec2 c = %s;", fpb->ensureFSCoords2D(args.fCoo rds, 0).c_str());
71 const char* inputColor,
72 const TransformedCoordsArray& coords,
73 const TextureSamplerArray& samplers) override {
74 GrGLFragmentBuilder* fpb = builder->getFragmentShaderBuilder();
75 fpb->codeAppendf("vec2 c = %s;", fpb->ensureFSCoords2D(coords, 0 ).c_str());
76 fpb->codeAppend("vec2 r = mod(c, vec2(20.0));"); 71 fpb->codeAppend("vec2 r = mod(c, vec2(20.0));");
77 fpb->codeAppend("vec4 color = vec4(0.5*sin(c.x / 15.0) + 0.5," 72 fpb->codeAppend("vec4 color = vec4(0.5*sin(c.x / 15.0) + 0.5,"
78 "0.5*cos((c.x + c.y) / 15.0) + 0.5," 73 "0.5*cos((c.x + c.y) / 15.0) + 0.5,"
79 "(r.x + r.y) / 20.0," 74 "(r.x + r.y) / 20.0,"
80 "distance(r, vec2(15.0)) / 2 0.0 + 0.2);"); 75 "distance(r, vec2(15.0)) / 2 0.0 + 0.2);");
81 fpb->codeAppendf("color.rgb *= color.a;" 76 fpb->codeAppendf("color.rgb *= color.a;"
82 "%s = color * %s;", 77 "%s = color * %s;",
83 outputColor, GrGLSLExpr4(inputColor).c_str() ); 78 args.fOutputColor, GrGLSLExpr4(args.fInputCo lor).c_str());
84 } 79 }
85 void setData(const GrGLProgramDataManager&, const GrProcessor&) over ride {} 80 void setData(const GrGLProgramDataManager&, const GrProcessor&) over ride {}
86 }; 81 };
87 return SkNEW(DCGLFP); 82 return SkNEW(DCGLFP);
88 } 83 }
89 84
90 const char* name() const override { return "DCFP"; } 85 const char* name() const override { return "DCFP"; }
91 86
92 void onComputeInvariantOutput(GrInvariantOutput* inout) const override { 87 void onComputeInvariantOutput(GrInvariantOutput* inout) const override {
93 inout->mulByUnknownFourComponents(); 88 inout->mulByUnknownFourComponents();
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292 }; 287 };
293 288
294 SkTArray<Prim*> fPrims; 289 SkTArray<Prim*> fPrims;
295 290
296 typedef GM INHERITED; 291 typedef GM INHERITED;
297 }; 292 };
298 293
299 DEF_GM( return SkNEW(DCShaderGM); ) 294 DEF_GM( return SkNEW(DCShaderGM); )
300 } 295 }
301 #endif 296 #endif
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