| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "GrGLSLFragmentProcessor.h" |
| #include "GrFragmentProcessor.h" |
| #include "GrProcessor.h" |
| #include "glsl/GrGLSLFragmentShaderBuilder.h" |
| #include "glsl/GrGLSLUniformHandler.h" |
| |
| void GrGLSLFragmentProcessor::setData(const GrGLSLProgramDataManager& pdman, |
| const GrFragmentProcessor& processor) { |
| this->onSetData(pdman, processor); |
| SkASSERT(fChildProcessors.count() == processor.numChildProcessors()); |
| for (int i = 0; i < fChildProcessors.count(); ++i) { |
| fChildProcessors[i]->setData(pdman, processor.childProcessor(i)); |
| } |
| } |
| |
| void GrGLSLFragmentProcessor::emitChild(int childIndex, const char* inputColor, EmitArgs& args) { |
| this->internalEmitChild(childIndex, inputColor, args.fOutputColor, args); |
| } |
| |
| void GrGLSLFragmentProcessor::emitChild(int childIndex, const char* inputColor, |
| SkString* outputColor, EmitArgs& args) { |
| |
| SkASSERT(outputColor); |
| GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
| outputColor->append(fragBuilder->getMangleString()); |
| fragBuilder->codeAppendf("vec4 %s;", outputColor->c_str()); |
| this->internalEmitChild(childIndex, inputColor, outputColor->c_str(), args); |
| } |
| |
| void GrGLSLFragmentProcessor::internalEmitChild(int childIndex, const char* inputColor, |
| const char* outputColor, EmitArgs& args) { |
| GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
| |
| fragBuilder->onBeforeChildProcEmitCode(); // call first so mangleString is updated |
| |
| const GrFragmentProcessor& childProc = args.fFp.childProcessor(childIndex); |
| |
| // emit the code for the child in its own scope |
| fragBuilder->codeAppend("{\n"); |
| fragBuilder->codeAppendf("// Child Index %d (mangle: %s): %s\n", childIndex, |
| fragBuilder->getMangleString().c_str(), childProc.name()); |
| TransformedCoordVars coordVars = args.fTransformedCoords.childInputs(childIndex); |
| TextureSamplers textureSamplers = args.fTexSamplers.childInputs(childIndex); |
| BufferSamplers bufferSamplers = args.fBufferSamplers.childInputs(childIndex); |
| ImageStorages imageStorages = args.fImageStorages.childInputs(childIndex); |
| EmitArgs childArgs(fragBuilder, |
| args.fUniformHandler, |
| args.fGLSLCaps, |
| childProc, |
| outputColor, |
| inputColor, |
| coordVars, |
| textureSamplers, |
| bufferSamplers, |
| imageStorages, |
| args.fGpImplementsDistanceVector); |
| this->childProcessor(childIndex)->emitCode(childArgs); |
| fragBuilder->codeAppend("}\n"); |
| |
| fragBuilder->onAfterChildProcEmitCode(); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| GrGLSLFragmentProcessor* GrGLSLFragmentProcessor::Iter::next() { |
| if (fFPStack.empty()) { |
| return nullptr; |
| } |
| GrGLSLFragmentProcessor* back = fFPStack.back(); |
| fFPStack.pop_back(); |
| for (int i = back->numChildProcessors() - 1; i >= 0; --i) { |
| fFPStack.push_back(back->childProcessor(i)); |
| } |
| return back; |
| } |