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Side by Side Diff: src/gpu/effects/GrBicubicEffect.cpp

Issue 1438003003: Move all ShaderBuilder files to GLSL (Closed) Base URL: https://skia.googlesource.com/skia.git@glslProgBuild
Patch Set: nits Created 5 years, 1 month 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 "GrBicubicEffect.h" 8 #include "GrBicubicEffect.h"
9 #include "GrInvariantOutput.h" 9 #include "GrInvariantOutput.h"
10 #include "gl/builders/GrGLProgramBuilder.h" 10 #include "glsl/GrGLSLFragmentShaderBuilder.h"
11 #include "glsl/GrGLSLProgramBuilder.h"
11 #include "glsl/GrGLSLProgramDataManager.h" 12 #include "glsl/GrGLSLProgramDataManager.h"
12 13
13 #define DS(x) SkDoubleToScalar(x) 14 #define DS(x) SkDoubleToScalar(x)
14 15
15 const SkScalar GrBicubicEffect::gMitchellCoefficients[16] = { 16 const SkScalar GrBicubicEffect::gMitchellCoefficients[16] = {
16 DS( 1.0 / 18.0), DS(-9.0 / 18.0), DS( 15.0 / 18.0), DS( -7.0 / 18.0), 17 DS( 1.0 / 18.0), DS(-9.0 / 18.0), DS( 15.0 / 18.0), DS( -7.0 / 18.0),
17 DS(16.0 / 18.0), DS( 0.0 / 18.0), DS(-36.0 / 18.0), DS( 21.0 / 18.0), 18 DS(16.0 / 18.0), DS( 0.0 / 18.0), DS(-36.0 / 18.0), DS( 21.0 / 18.0),
18 DS( 1.0 / 18.0), DS( 9.0 / 18.0), DS( 27.0 / 18.0), DS(-21.0 / 18.0), 19 DS( 1.0 / 18.0), DS( 9.0 / 18.0), DS( 27.0 / 18.0), DS(-21.0 / 18.0),
19 DS( 0.0 / 18.0), DS( 0.0 / 18.0), DS( -6.0 / 18.0), DS( 7.0 / 18.0), 20 DS( 0.0 / 18.0), DS( 0.0 / 18.0), DS( -6.0 / 18.0), DS( 7.0 / 18.0),
20 }; 21 };
(...skipping 23 matching lines...) Expand all
44 45
45 typedef GrGLFragmentProcessor INHERITED; 46 typedef GrGLFragmentProcessor INHERITED;
46 }; 47 };
47 48
48 GrGLBicubicEffect::GrGLBicubicEffect(const GrProcessor&) { 49 GrGLBicubicEffect::GrGLBicubicEffect(const GrProcessor&) {
49 } 50 }
50 51
51 void GrGLBicubicEffect::emitCode(EmitArgs& args) { 52 void GrGLBicubicEffect::emitCode(EmitArgs& args) {
52 const GrTextureDomain& domain = args.fFp.cast<GrBicubicEffect>().domain(); 53 const GrTextureDomain& domain = args.fFp.cast<GrBicubicEffect>().domain();
53 54
54 fCoefficientsUni = args.fBuilder->addUniform(GrGLProgramBuilder::kFragment_V isibility, 55 fCoefficientsUni = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragment _Visibility,
55 kMat44f_GrSLType, kDefault_GrSLPrecis ion, 56 kMat44f_GrSLType, kDefault_GrSLPrecis ion,
56 "Coefficients"); 57 "Coefficients");
57 fImageIncrementUni = args.fBuilder->addUniform(GrGLProgramBuilder::kFragment _Visibility, 58 fImageIncrementUni = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragme nt_Visibility,
58 kVec2f_GrSLType, kDefault_GrSLPreci sion, 59 kVec2f_GrSLType, kDefault_GrSLPreci sion,
59 "ImageIncrement"); 60 "ImageIncrement");
60 61
61 const char* imgInc = args.fBuilder->getUniformCStr(fImageIncrementUni); 62 const char* imgInc = args.fBuilder->getUniformCStr(fImageIncrementUni);
62 const char* coeff = args.fBuilder->getUniformCStr(fCoefficientsUni); 63 const char* coeff = args.fBuilder->getUniformCStr(fCoefficientsUni);
63 64
64 SkString cubicBlendName; 65 SkString cubicBlendName;
65 66
66 static const GrGLSLShaderVar gCubicBlendArgs[] = { 67 static const GrGLSLShaderVar gCubicBlendArgs[] = {
67 GrGLSLShaderVar("coefficients", kMat44f_GrSLType), 68 GrGLSLShaderVar("coefficients", kMat44f_GrSLType),
68 GrGLSLShaderVar("t", kFloat_GrSLType), 69 GrGLSLShaderVar("t", kFloat_GrSLType),
69 GrGLSLShaderVar("c0", kVec4f_GrSLType), 70 GrGLSLShaderVar("c0", kVec4f_GrSLType),
70 GrGLSLShaderVar("c1", kVec4f_GrSLType), 71 GrGLSLShaderVar("c1", kVec4f_GrSLType),
71 GrGLSLShaderVar("c2", kVec4f_GrSLType), 72 GrGLSLShaderVar("c2", kVec4f_GrSLType),
72 GrGLSLShaderVar("c3", kVec4f_GrSLType), 73 GrGLSLShaderVar("c3", kVec4f_GrSLType),
73 }; 74 };
74 GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder(); 75 GrGLSLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder() ;
75 SkString coords2D = fsBuilder->ensureFSCoords2D(args.fCoords, 0); 76 SkString coords2D = fsBuilder->ensureFSCoords2D(args.fCoords, 0);
76 fsBuilder->emitFunction(kVec4f_GrSLType, 77 fsBuilder->emitFunction(kVec4f_GrSLType,
77 "cubicBlend", 78 "cubicBlend",
78 SK_ARRAY_COUNT(gCubicBlendArgs), 79 SK_ARRAY_COUNT(gCubicBlendArgs),
79 gCubicBlendArgs, 80 gCubicBlendArgs,
80 "\tvec4 ts = vec4(1.0, t, t * t, t * t * t);\n" 81 "\tvec4 ts = vec4(1.0, t, t * t, t * t * t);\n"
81 "\tvec4 c = coefficients * ts;\n" 82 "\tvec4 c = coefficients * ts;\n"
82 "\treturn c.x * c0 + c.y * c1 + c.z * c2 + c.w * c3; \n", 83 "\treturn c.x * c0 + c.y * c1 + c.z * c2 + c.w * c3; \n",
83 &cubicBlendName); 84 &cubicBlendName);
84 fsBuilder->codeAppendf("\tvec2 coord = %s - %s * vec2(0.5);\n", coords2D.c_s tr(), imgInc); 85 fsBuilder->codeAppendf("\tvec2 coord = %s - %s * vec2(0.5);\n", coords2D.c_s tr(), imgInc);
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208 // Use bilerp to handle rotation or fractional translation. 209 // Use bilerp to handle rotation or fractional translation.
209 *filterMode = GrTextureParams::kBilerp_FilterMode; 210 *filterMode = GrTextureParams::kBilerp_FilterMode;
210 } 211 }
211 return false; 212 return false;
212 } 213 }
213 // When we use the bicubic filtering effect each sample is read from the tex ture using 214 // When we use the bicubic filtering effect each sample is read from the tex ture using
214 // nearest neighbor sampling. 215 // nearest neighbor sampling.
215 *filterMode = GrTextureParams::kNone_FilterMode; 216 *filterMode = GrTextureParams::kNone_FilterMode;
216 return true; 217 return true;
217 } 218 }
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