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Reflect pipeline outputs as well as inputs, optionally from other stages

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* We add an option to reflect inputs from other stages than vertex, if only a
  later subset of the stages is linked into the program.
This commit is contained in:
baldurk 2019-01-29 16:04:44 +00:00
parent edf8212ab8
commit 0af5e3e346
17 changed files with 149 additions and 32 deletions
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23
glslang/MachineIndependent/ShaderLang.cpp
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@ -1971,7 +1971,22 @@ bool TProgram::buildReflection(int opts)
if (! linked || reflection)
return false;
reflection = new TReflection((EShReflectionOptions)opts);
int firstStage = EShLangVertex, lastStage = EShLangFragment;
if (opts & EShReflectionIntermediateIO) {
// if we're reflecting intermediate I/O, determine the first and last stage linked and use those as the
// boundaries for which stages generate pipeline inputs/outputs
firstStage = EShLangCount;
lastStage = 0;
for (int s = 0; s < EShLangCount; ++s) {
if (intermediate[s]) {
firstStage = std::min(firstStage, s);
lastStage = std::max(lastStage, s);
}
}
}
reflection = new TReflection((EShReflectionOptions)opts, (EShLanguage)firstStage, (EShLanguage)lastStage);
for (int s = 0; s < EShLangCount; ++s) {
if (intermediate[s]) {
@ -1990,8 +2005,10 @@ int TProgram::getNumUniformVariables() const { return ref
const TObjectReflection& TProgram::getUniform(int index) const { return reflection->getUniform(index); }
int TProgram::getNumUniformBlocks() const { return reflection->getNumUniformBlocks(); }
const TObjectReflection& TProgram::getUniformBlock(int index) const { return reflection->getUniformBlock(index); }
int TProgram::getNumAttributes() const { return reflection->getNumAttributes(); }
const TObjectReflection& TProgram::getAttribute(int index) const { return reflection->getAttribute(index); }
int TProgram::getNumPipeInputs() const { return reflection->getNumPipeInputs(); }
const TObjectReflection& TProgram::getPipeInput(int index) const { return reflection->getPipeInput(index); }
int TProgram::getNumPipeOutputs() const { return reflection->getNumPipeOutputs(); }
const TObjectReflection& TProgram::getPipeOutput(int index) const { return reflection->getPipeOutput(index); }
void TProgram::dumpReflection() { reflection->dump(); }