Method emitAndInstallXferProc

src/gpu/ProgramBuilder.cpp:137–156

}

void ProgramBuilder::emitAndInstallXferProc(const std::string& colorIn,
                                            const std::string& coverageIn) {
  auto xferProcessor = programInfo->getXferProcessor();
  ProcessorGuard processorGuard(this, xferProcessor);
  fragmentShaderBuilder()->codeAppendf("{ // Processor%d : %s\n",
                                       programInfo->getProcessorIndex(xferProcessor),
                                       xferProcessor->name().c_str());

  SamplerHandle dstTextureSamplerHandle;
  if (auto dstTextureView = xferProcessor->dstTextureView()) {
    dstTextureSamplerHandle = emitSampler(dstTextureView->getTexture(), "DstTextureSampler");
  }

  std::string inputColor = !colorIn.empty() ? colorIn : "vec4(1.0)";
  std::string inputCoverage = !coverageIn.empty() ? coverageIn : "vec4(1.0)";
  XferProcessor::EmitArgs args(fragmentShaderBuilder(), uniformHandler(), inputColor, inputCoverage,
                               fragmentShaderBuilder()->colorOutputName(), dstTextureSamplerHandle);
  xferProcessor->emitCode(args);
  fragmentShaderBuilder()->codeAppend("}");
}

SamplerHandle ProgramBuilder::emitSampler(GPUTexture* texture, const std::string& name) {
  ++numFragmentSamplers;