void HlslLinker::emitGlobals(const GlslFunction* globalFunction, const std::vector<GlslSymbol*>& constants)
{
// write global scope declarations (represented as a fake function)
assert(globalFunction);
shader << globalFunction->getCode();
globalFunction->addNeededExtensions (m_Extensions, m_Target);
// write mutable uniform declarations
const unsigned n_constants = constants.size();
for (unsigned i = 0; i != n_constants; ++i) {
GlslSymbol* s = constants[i];
if (s->getIsMutable()) {
s->writeDecl(shader, GlslSymbol::kWriteDeclMutableDecl);
shader << ";\n";
}
}
}
void HlslLinker::emitMainStart(const HlslCrossCompiler* compiler, const EGlslSymbolType retType, GlslFunction* funcMain, unsigned options, bool usePrecision, std::stringstream& preamble, const std::vector<GlslSymbol*>& constants)
{
preamble << "void main() {\n";
// initialize mutable uniforms with the original uniform values
const unsigned n_constants = constants.size();
for (unsigned i = 0; i != n_constants; ++i) {
GlslSymbol* s = constants[i];
if (s->getIsMutable()) {
s->writeDecl(preamble, GlslSymbol::kWriteDeclMutableInit);
preamble << ";\n";
}
}
std::string arrayInit = compiler->m_DeferredArrayInit.str();
if (!arrayInit.empty())
{
const bool emit_120_arrays = (m_Target >= ETargetGLSL_120);
const bool emit_old_arrays = !emit_120_arrays || (options & ETranslateOpEmitGLSL120ArrayInitWorkaround);
const bool emit_both = emit_120_arrays && emit_old_arrays;
if (emit_both)
preamble << "#if defined(HLSL2GLSL_ENABLE_ARRAY_120_WORKAROUND)" << std::endl;
preamble << arrayInit;
if (emit_both)
preamble << "\n#endif" << std::endl;
}
std::string matrixInit = compiler->m_DeferredMatrixInit.str();
if (!matrixInit.empty())
{
preamble << matrixInit;
}
if (retType == EgstStruct)
{
GlslStruct* retStruct = funcMain->getStruct();
assert(retStruct);
preamble << " " << retStruct->getName() << " xl_retval;\n";
}
else if (retType != EgstVoid)
{
preamble << " ";
writeType (preamble, retType, NULL, usePrecision?funcMain->getPrecision():EbpUndefined);
preamble << " xl_retval;\n";
}
}
