TString UniformHLSL::interfaceBlockMembersString(const TInterfaceBlock &interfaceBlock, TLayoutBlockStorage blockStorage)
{
TString hlsl;
Std140PaddingHelper padHelper = mStructureHLSL->getPaddingHelper();
for (unsigned int typeIndex = 0; typeIndex < interfaceBlock.fields().size(); typeIndex++)
{
const TField &field = *interfaceBlock.fields()[typeIndex];
const TType &fieldType = *field.type();
if (blockStorage == EbsStd140)
{
// 2 and 3 component vector types in some cases need pre-padding
hlsl += padHelper.prePaddingString(fieldType);
}
hlsl += " " + InterfaceBlockFieldTypeString(field, blockStorage) +
" " + Decorate(field.name()) + ArrayString(fieldType) + ";\n";
// must pad out after matrices and arrays, where HLSL usually allows itself room to pack stuff
if (blockStorage == EbsStd140)
{
const bool useHLSLRowMajorPacking = (fieldType.getLayoutQualifier().matrixPacking == EmpColumnMajor);
hlsl += padHelper.postPaddingString(fieldType, useHLSLRowMajorPacking);
}
}
return hlsl;
}
void StructureHLSL::storeStd140ElementIndex(const TStructure &structure, bool useHLSLRowMajorPacking)
{
Std140PaddingHelper padHelper = getPaddingHelper();
const TFieldList &fields = structure.fields();
for (unsigned int i = 0; i < fields.size(); i++)
{
padHelper.prePadding(*fields[i]->type());
}
// Add remaining element index to the global map, for use with nested structs in standard layouts
const TString &structName = QualifiedStructNameString(structure, useHLSLRowMajorPacking, true);
mStd140StructElementIndexes[structName] = padHelper.elementIndex();
}
