1fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot/* 2fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot * Copyright 2014 Google Inc. 3fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot * 4fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot * Use of this source code is governed by a BSD-style license that can be 5fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot * found in the LICENSE file. 6fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot */ 7fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 8fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot#include "GrShaderVar.h" 9fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot#include "GrShaderCaps.h" 10fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot#include "GrSwizzle.h" 11fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot#include "glsl/GrGLSLShaderBuilder.h" 12fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot#include "glsl/GrGLSLColorSpaceXformHelper.h" 13fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot#include "glsl/GrGLSLProgramBuilder.h" 14fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 15fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team RobotGrGLSLShaderBuilder::GrGLSLShaderBuilder(GrGLSLProgramBuilder* program) 16fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot : fProgramBuilder(program) 17fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot , fInputs(GrGLSLProgramBuilder::kVarsPerBlock) 18fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot , fOutputs(GrGLSLProgramBuilder::kVarsPerBlock) 19fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot , fFeaturesAddedMask(0) 20fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot , fCodeIndex(kCode) 21fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot , fFinalized(false) { 22fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // We push back some dummy pointers which will later become our header 23fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot for (int i = 0; i <= kCode; i++) { 24fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot fShaderStrings.push_back(); 25fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot fCompilerStrings.push_back(nullptr); 26fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot fCompilerStringLengths.push_back(0); 27fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 28fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 29fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->main() = "void main() {"; 30fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 31fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 32fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotvoid GrGLSLShaderBuilder::declAppend(const GrShaderVar& var) { 33fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkString tempDecl; 34fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot var.appendDecl(fProgramBuilder->shaderCaps(), &tempDecl); 35fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->codeAppendf("%s;", tempDecl.c_str()); 36fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 37fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 38fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotvoid GrGLSLShaderBuilder::declareGlobal(const GrShaderVar& v) { 39fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot v.appendDecl(this->getProgramBuilder()->shaderCaps(), &this->definitions()); 40fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->definitions().append(";"); 41fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 42fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 43fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotvoid GrGLSLShaderBuilder::emitFunction(GrSLType returnType, 44fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const char* name, 45fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot int argCnt, 46fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const GrShaderVar* args, 47fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const char* body, 48fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkString* outName) { 49fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->functions().append(GrGLSLTypeString(fProgramBuilder->shaderCaps(), returnType)); 50fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot fProgramBuilder->nameVariable(outName, '\0', name); 51fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->functions().appendf(" %s", outName->c_str()); 52fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->functions().append("("); 53fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot for (int i = 0; i < argCnt; ++i) { 54fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot args[i].appendDecl(fProgramBuilder->shaderCaps(), &this->functions()); 55fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (i < argCnt - 1) { 56fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->functions().append(", "); 57fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 58fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 59fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->functions().append(") {\n"); 60fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->functions().append(body); 61fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->functions().append("}\n\n"); 62fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 63fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 64fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotstatic inline void append_texture_swizzle(SkString* out, GrSwizzle swizzle) { 65fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (swizzle != GrSwizzle::RGBA()) { 66fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot out->appendf(".%s", swizzle.c_str()); 67fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 68fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 69fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 70fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotvoid GrGLSLShaderBuilder::appendTextureLookup(SkString* out, 71fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SamplerHandle samplerHandle, 72fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const char* coordName, 73fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot GrSLType varyingType) const { 74fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const GrShaderVar& sampler = fProgramBuilder->samplerVariable(samplerHandle); 75fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot out->appendf("texture(%s, %s)", sampler.c_str(), coordName); 76fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot append_texture_swizzle(out, fProgramBuilder->samplerSwizzle(samplerHandle)); 77fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 78fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 79fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotvoid GrGLSLShaderBuilder::appendTextureLookup(SamplerHandle samplerHandle, 80fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const char* coordName, 81fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot GrSLType varyingType, 82fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot GrGLSLColorSpaceXformHelper* colorXformHelper) { 83fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (colorXformHelper && colorXformHelper->isValid()) { 84fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // With a color gamut transform, we need to wrap the lookup in another function call 85fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkString lookup; 86fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->appendTextureLookup(&lookup, samplerHandle, coordName, varyingType); 87fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->appendColorGamutXform(lookup.c_str(), colorXformHelper); 88fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } else { 89fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->appendTextureLookup(&this->code(), samplerHandle, coordName, varyingType); 90fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 91fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 92fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 93fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotvoid GrGLSLShaderBuilder::appendTextureLookupAndModulate( 94fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const char* modulation, 95fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SamplerHandle samplerHandle, 96fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const char* coordName, 97fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot GrSLType varyingType, 98fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot GrGLSLColorSpaceXformHelper* colorXformHelper) { 99fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkString lookup; 100fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->appendTextureLookup(&lookup, samplerHandle, coordName, varyingType); 101fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (colorXformHelper && colorXformHelper->isValid()) { 102fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkString xform; 103fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->appendColorGamutXform(&xform, lookup.c_str(), colorXformHelper); 104fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (modulation) { 105fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->codeAppendf("%s * %s", modulation, xform.c_str()); 106fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } else { 107fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->codeAppendf("%s", xform.c_str()); 108fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 109fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } else { 110fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (modulation) { 111fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->codeAppendf("%s * %s", modulation, lookup.c_str()); 112fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } else { 113fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->codeAppendf("%s", lookup.c_str()); 114fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 115fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 116fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 117fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 118fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotvoid GrGLSLShaderBuilder::appendColorGamutXform(SkString* out, 119fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const char* srcColor, 120fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot GrGLSLColorSpaceXformHelper* colorXformHelper) { 121fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot GrGLSLUniformHandler* uniformHandler = fProgramBuilder->uniformHandler(); 122fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 123fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // We define up to three helper functions, to keep things clearer. One does inverse sRGB, 124fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // one does an arbitrary transfer function, and the last does gamut xform. Any combination of 125fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // these may be present, although some configurations are much more likely. 126fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 127fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkString inverseSrgbFuncName; 128fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (colorXformHelper->applyInverseSRGB()) { 129fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot static const GrShaderVar gInverseSRGBArgs[] = { GrShaderVar("x", kHalf_GrSLType) }; 130fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkString body; 131fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.append("return (x <= 0.0031308) ? (x * 12.92) : (1.055 * pow(x, 0.4166667) - 0.055);"); 132fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->emitFunction(kHalf_GrSLType, "inverse_srgb", SK_ARRAY_COUNT(gInverseSRGBArgs), 133fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot gInverseSRGBArgs, body.c_str(), &inverseSrgbFuncName); 134fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 135fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 136fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 137fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkString transferFnFuncName; 138fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (colorXformHelper->applyTransferFn()) { 139fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot static const GrShaderVar gTransferFnArgs[] = { GrShaderVar("x", kHalf_GrSLType) }; 140fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const char* coeffs = uniformHandler->getUniformCStr(colorXformHelper->transferFnUniform()); 141fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkString body; 142fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // Temporaries to make evaluation line readable 143fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.appendf("half G = %s[0];", coeffs); 144fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.appendf("half A = %s[1];", coeffs); 145fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.appendf("half B = %s[2];", coeffs); 146fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.appendf("half C = %s[3];", coeffs); 147fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.appendf("half D = %s[4];", coeffs); 148fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.appendf("half E = %s[5];", coeffs); 149fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.appendf("half F = %s[6];", coeffs); 150fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.append("half s = sign(x);"); 151fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.append("x = abs(x);"); 152fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.appendf("return s * ((x < D) ? (C * x) + F : pow(A * x + B, G) + E);"); 153fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->emitFunction(kHalf_GrSLType, "transfer_fn", SK_ARRAY_COUNT(gTransferFnArgs), 154fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot gTransferFnArgs, body.c_str(), &transferFnFuncName); 155fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 156fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 157fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkString gamutXformFuncName; 158fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (colorXformHelper->applyGamutXform()) { 159fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // Our color is (r, g, b, a), but we want to multiply (r, g, b, 1) by our matrix, then 160fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // re-insert the original alpha. 161fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot static const GrShaderVar gGamutXformArgs[] = { GrShaderVar("color", kHalf4_GrSLType) }; 162fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const char* xform = uniformHandler->getUniformCStr(colorXformHelper->gamutXformUniform()); 163fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkString body; 164fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.appendf("color.rgb = clamp((%s * half4(color.rgb, 1.0)).rgb, 0.0, color.a);", xform); 165fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.append("return color;"); 166fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->emitFunction(kHalf4_GrSLType, "gamut_xform", SK_ARRAY_COUNT(gGamutXformArgs), 167fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot gGamutXformArgs, body.c_str(), &gamutXformFuncName); 168fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 169fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 170fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // Now define a wrapper function that applies all the intermediate steps 171fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot { 172fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot static const GrShaderVar gColorXformArgs[] = { GrShaderVar("color", kHalf4_GrSLType) }; 173fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkString body; 174fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (colorXformHelper->applyInverseSRGB()) { 175fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.appendf("color.r = %s(color.r);", inverseSrgbFuncName.c_str()); 176fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.appendf("color.g = %s(color.g);", inverseSrgbFuncName.c_str()); 177fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.appendf("color.b = %s(color.b);", inverseSrgbFuncName.c_str()); 178fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 179fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (colorXformHelper->applyTransferFn()) { 180fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.appendf("color.r = %s(color.r);", transferFnFuncName.c_str()); 181fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.appendf("color.g = %s(color.g);", transferFnFuncName.c_str()); 182fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.appendf("color.b = %s(color.b);", transferFnFuncName.c_str()); 183fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 184fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (colorXformHelper->applyGamutXform()) { 185fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.appendf("color = %s(color);", gamutXformFuncName.c_str()); 186fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 187fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot body.append("return color;"); 188fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkString colorXformFuncName; 189fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->emitFunction(kHalf4_GrSLType, "color_xform", SK_ARRAY_COUNT(gColorXformArgs), 190fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot gColorXformArgs, body.c_str(), &colorXformFuncName); 191fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot out->appendf("%s(%s)", colorXformFuncName.c_str(), srcColor); 192fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 193fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 194fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 195fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotvoid GrGLSLShaderBuilder::appendColorGamutXform(const char* srcColor, 196fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot GrGLSLColorSpaceXformHelper* colorXformHelper) { 197fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkString xform; 198fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->appendColorGamutXform(&xform, srcColor, colorXformHelper); 199fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->codeAppend(xform.c_str()); 200fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 201fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 202fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotvoid GrGLSLShaderBuilder::appendTexelFetch(SkString* out, 203fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot TexelBufferHandle texelBufferHandle, 204fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const char* coordExpr) const { 205fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const GrShaderVar& texelBuffer = fProgramBuilder->texelBufferVariable(texelBufferHandle); 206fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkASSERT(fProgramBuilder->shaderCaps()->texelFetchSupport()); 207fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 208fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot out->appendf("texelFetch(%s, %s)", texelBuffer.c_str(), coordExpr); 209fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 210fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 211fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotvoid GrGLSLShaderBuilder::appendTexelFetch(TexelBufferHandle texelBufferHandle, 212fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const char* coordExpr) { 213fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->appendTexelFetch(&this->code(), texelBufferHandle, coordExpr); 214fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 215fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 216fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotbool GrGLSLShaderBuilder::addFeature(uint32_t featureBit, const char* extensionName) { 217fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (featureBit & fFeaturesAddedMask) { 218fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot return false; 219fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 220fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->extensions().appendf("#extension %s: require\n", extensionName); 221fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot fFeaturesAddedMask |= featureBit; 222fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot return true; 223fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 224fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 225fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotvoid GrGLSLShaderBuilder::appendDecls(const VarArray& vars, SkString* out) const { 226fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot for (int i = 0; i < vars.count(); ++i) { 227fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot vars[i].appendDecl(fProgramBuilder->shaderCaps(), out); 228fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot out->append(";\n"); 229fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 230fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 231fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 232fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotvoid GrGLSLShaderBuilder::addLayoutQualifier(const char* param, InterfaceQualifier interface) { 233fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkASSERT(fProgramBuilder->shaderCaps()->generation() >= k330_GrGLSLGeneration || 234fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot fProgramBuilder->shaderCaps()->mustEnableAdvBlendEqs()); 235fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot fLayoutParams[interface].push_back() = param; 236fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 237fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 238fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotvoid GrGLSLShaderBuilder::compileAndAppendLayoutQualifiers() { 239fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot static const char* interfaceQualifierNames[] = { 240fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot "in", 241fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot "out" 242fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot }; 243fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 244fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot for (int interface = 0; interface <= kLastInterfaceQualifier; ++interface) { 245fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot const SkTArray<SkString>& params = fLayoutParams[interface]; 246fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot if (params.empty()) { 247fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot continue; 248fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 249fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->layoutQualifiers().appendf("layout(%s", params[0].c_str()); 250fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot for (int i = 1; i < params.count(); ++i) { 251fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->layoutQualifiers().appendf(", %s", params[i].c_str()); 252fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 253fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->layoutQualifiers().appendf(") %s;\n", interfaceQualifierNames[interface]); 254fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 255fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 256fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot GR_STATIC_ASSERT(0 == GrGLSLShaderBuilder::kIn_InterfaceQualifier); 257fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot GR_STATIC_ASSERT(1 == GrGLSLShaderBuilder::kOut_InterfaceQualifier); 258fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot GR_STATIC_ASSERT(SK_ARRAY_COUNT(interfaceQualifierNames) == kLastInterfaceQualifier + 1); 259fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 260fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 261fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robotvoid GrGLSLShaderBuilder::finalize(uint32_t visibility) { 262fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkASSERT(!fFinalized); 263fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->versionDecl() = fProgramBuilder->shaderCaps()->versionDeclString(); 264fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->compileAndAppendLayoutQualifiers(); 265fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot SkASSERT(visibility); 266fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot fProgramBuilder->appendUniformDecls((GrShaderFlags) visibility, &this->uniforms()); 267fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->appendDecls(fInputs, &this->inputs()); 268fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->appendDecls(fOutputs, &this->outputs()); 269fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->onFinalize(); 270fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot // append the 'footer' to code 271fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot this->code().append("}"); 272fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 273fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot for (int i = 0; i <= fCodeIndex; i++) { 274fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot fCompilerStrings[i] = fShaderStrings[i].c_str(); 275fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot fCompilerStringLengths[i] = (int)fShaderStrings[i].size(); 276fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot } 277fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot 278fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot fFinalized = true; 279fe17456d5e528078ce69b5f15cf7adf1fab963fandroid-build-team Robot} 280