static void emitSingleInputVariable (EShLanguage lang, ETargetVersion targetVersion, const std::string& name, const std::string& ctor, EGlslSymbolType type, TPrecision prec, std::stringstream& attrib, std::stringstream& varying)
{
// vertex shader: emit custom attributes
if (lang == EShLangVertex && strncmp(name.c_str(), "gl_", 3) != 0)
{
int typeOffset = 0;
// If the type is integer or bool based, we must convert to a float based
// type. This is because GLSL does not allow int or bool based vertex attributes.
//
// NOTE: will need to be updated for more modern GLSL versions to allow this!
if (type >= EgstInt && type <= EgstInt4)
typeOffset += 4;
if (type >= EgstBool && type <= EgstBool4)
typeOffset += 8;
attrib << GetVertexInputQualifier(targetVersion) << " " << getGLSLPrecisiontring(prec) << getTypeString((EGlslSymbolType)(type + typeOffset)) << " " << name << ";\n";
}
// fragment shader: emit varying
if (lang == EShLangFragment)
{
AddFragmentInput(varying, targetVersion, prec, ctor, name);
}
}
/// Outputs the type of the symbol to the output buffer
/// \param out
/// The output buffer to write the type to
/// \param type
/// The type of the GLSL symbol to output
/// \param s
/// If it is a structure, a pointer to the structure to write out
void writeType (std::stringstream &out, EGlslSymbolType type, const GlslStruct *s, TPrecision precision)
{
if (type >= EgstInt) // precision does not apply to void/bool
out << getGLSLPrecisiontring (precision);
switch (type)
{
case EgstVoid:
case EgstBool:
case EgstBool2:
case EgstBool3:
case EgstBool4:
case EgstInt:
case EgstInt2:
case EgstInt3:
case EgstInt4:
case EgstFloat:
case EgstFloat2:
case EgstFloat3:
case EgstFloat4:
case EgstFloat2x2:
case EgstFloat2x3:
case EgstFloat2x4:
case EgstFloat3x2:
case EgstFloat3x3:
case EgstFloat3x4:
case EgstFloat4x2:
case EgstFloat4x3:
case EgstFloat4x4:
case EgstSamplerGeneric:
case EgstSampler1D:
case EgstSampler1DShadow:
case EgstSampler2D:
case EgstSampler2DShadow:
case EgstSampler3D:
case EgstSamplerCube:
case EgstSamplerRect:
case EgstSamplerRectShadow:
out << typeString[type];
break;
case EgstStruct:
if (s)
out << s->getName();
else
out << "struct";
break;
case EgstTypeCount:
break;
}
}
static inline void AddToVaryings (std::stringstream& s, TPrecision prec, const std::string& type, const std::string& name)
{
if (strstr (name.c_str(), kUserVaryingPrefix) == name.c_str())
s << "varying " << getGLSLPrecisiontring(prec) << type << " " << name << ";\n";
}
static inline void AddFragmentInput (std::stringstream& s, ETargetVersion targetVersion, TPrecision prec, const std::string& type, const std::string& name)
{
if (strstr (name.c_str(), kUserVaryingPrefix) == name.c_str())
s << GetFragmentInputQualifier(targetVersion) << " " << getGLSLPrecisiontring(prec) << type << " " << name << ";\n";
}