TString UniformHLSL::uniformsHeader(ShShaderOutput outputType, const ReferencedSymbols &referencedUniforms)
{
TString uniforms;
for (ReferencedSymbols::const_iterator uniformIt = referencedUniforms.begin();
uniformIt != referencedUniforms.end(); uniformIt++)
{
const TIntermSymbol &uniform = *uniformIt->second;
const TType &type = uniform.getType();
const TString &name = uniform.getSymbol();
int registerIndex = declareUniformAndAssignRegister(type, name);
if (outputType == SH_HLSL11_OUTPUT && IsSampler(type.getBasicType())) // Also declare the texture
{
uniforms += "uniform " + SamplerString(type) + " sampler_" + DecorateUniform(name, type) + ArrayString(type) +
" : register(s" + str(registerIndex) + ");\n";
uniforms += "uniform " + TextureString(type) + " texture_" + DecorateUniform(name, type) + ArrayString(type) +
" : register(t" + str(registerIndex) + ");\n";
}
else
{
const TStructure *structure = type.getStruct();
const TString &typeName = (structure ? QualifiedStructNameString(*structure, false, false) : TypeString(type));
const TString ®isterString = TString("register(") + UniformRegisterPrefix(type) + str(registerIndex) + ")";
uniforms += "uniform " + typeName + " " + DecorateUniform(name, type) + ArrayString(type) + " : " + registerString + ";\n";
}
}
return (uniforms.empty() ? "" : ("// Uniforms\n\n" + uniforms));
}
TString StructureHLSL::define(const TStructure &structure, bool useHLSLRowMajorPacking,
bool useStd140Packing, Std140PaddingHelper *padHelper)
{
const TFieldList &fields = structure.fields();
const bool isNameless = (structure.name() == "");
const TString &structName = QualifiedStructNameString(structure, useHLSLRowMajorPacking,
useStd140Packing);
const TString declareString = (isNameless ? "struct" : "struct " + structName);
TString string;
string += declareString + "\n"
"{\n";
for (unsigned int i = 0; i < fields.size(); i++)
{
const TField &field = *fields[i];
const TType &fieldType = *field.type();
const TStructure *fieldStruct = fieldType.getStruct();
const TString &fieldTypeString = fieldStruct ?
QualifiedStructNameString(*fieldStruct, useHLSLRowMajorPacking,
useStd140Packing) :
TypeString(fieldType);
if (padHelper)
{
string += padHelper->prePaddingString(fieldType);
}
string += " " + fieldTypeString + " " + DecorateField(field.name(), structure) + ArrayString(fieldType) + ";\n";
if (padHelper)
{
string += padHelper->postPaddingString(fieldType, useHLSLRowMajorPacking);
}
}
// Nameless structs do not finish with a semicolon and newline, to leave room for an instance variable
string += (isNameless ? "} " : "};\n");
return string;
}
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();
}
TString Std140PaddingHelper::postPaddingString(const TType &type, bool useHLSLRowMajorPacking)
{
if (!type.isMatrix() && !type.isArray() && type.getBasicType() != EbtStruct)
{
return "";
}
int numComponents = 0;
TStructure *structure = type.getStruct();
if (type.isMatrix())
{
// This method can also be called from structureString, which does not use layout qualifiers.
// Thus, use the method parameter for determining the matrix packing.
//
// Note HLSL row major packing corresponds to GL API column-major, and vice-versa, since we
// wish to always transpose GL matrices to play well with HLSL's matrix array indexing.
//
const bool isRowMajorMatrix = !useHLSLRowMajorPacking;
const GLenum glType = GLVariableType(type);
numComponents = gl::MatrixComponentCount(glType, isRowMajorMatrix);
}
else if (structure)
{
const TString &structName = QualifiedStructNameString(*structure,
useHLSLRowMajorPacking, true);
numComponents = mStructElementIndexes->find(structName)->second;
if (numComponents == 0)
{
return "";
}
}
else
{
const GLenum glType = GLVariableType(type);
numComponents = gl::VariableComponentCount(glType);
}
TString padding;
for (int paddingOffset = numComponents; paddingOffset < 4; paddingOffset++)
{
padding += " float pad_" + next() + ";\n";
}
return padding;
}
TString UniformHLSL::uniformsHeader(ShShaderOutput outputType, const ReferencedSymbols &referencedUniforms)
{
TString uniforms;
for (ReferencedSymbols::const_iterator uniformIt = referencedUniforms.begin();
uniformIt != referencedUniforms.end(); uniformIt++)
{
const TIntermSymbol &uniform = *uniformIt->second;
const TType &type = uniform.getType();
const TString &name = uniform.getSymbol();
unsigned int registerIndex = declareUniformAndAssignRegister(type, name);
if (outputType == SH_HLSL11_OUTPUT && IsSampler(type.getBasicType())) // Also declare the texture
{
uniforms += "uniform " + SamplerString(type) + " sampler_" + DecorateUniform(name, type) + ArrayString(type) +
" : register(s" + str(registerIndex) + ");\n";
uniforms += "uniform " + TextureString(type) + " texture_" + DecorateUniform(name, type) + ArrayString(type) +
" : register(t" + str(registerIndex) + ");\n";
}
else
{
const TStructure *structure = type.getStruct();
// If this is a nameless struct, we need to use its full definition, rather than its (empty) name.
// TypeString() will invoke defineNameless in this case; qualifier prefixes are unnecessary for
// nameless structs in ES, as nameless structs cannot be used anywhere that layout qualifiers are
// permitted.
const TString &typeName = ((structure && !structure->name().empty()) ?
QualifiedStructNameString(*structure, false, false) : TypeString(type));
const TString ®isterString = TString("register(") + UniformRegisterPrefix(type) + str(registerIndex) + ")";
uniforms += "uniform " + typeName + " " + DecorateUniform(name, type) + ArrayString(type) + " : " + registerString + ";\n";
}
}
return (uniforms.empty() ? "" : ("// Uniforms\n\n" + uniforms));
}
static TString InterfaceBlockFieldTypeString(const TField &field, TLayoutBlockStorage blockStorage)
{
const TType &fieldType = *field.type();
const TLayoutMatrixPacking matrixPacking = fieldType.getLayoutQualifier().matrixPacking;
ASSERT(matrixPacking != EmpUnspecified);
TStructure *structure = fieldType.getStruct();
if (fieldType.isMatrix())
{
// Use HLSL row-major packing for GLSL column-major matrices
const TString &matrixPackString = (matrixPacking == EmpRowMajor ? "column_major" : "row_major");
return matrixPackString + " " + TypeString(fieldType);
}
else if (structure)
{
// Use HLSL row-major packing for GLSL column-major matrices
return QualifiedStructNameString(*structure, matrixPacking == EmpColumnMajor,
blockStorage == EbsStd140);
}
else
{
return TypeString(fieldType);
}
}
void UniformHLSL::outputUniform(TInfoSinkBase &out,
const TType &type,
const TName &name,
const unsigned int registerIndex)
{
const TStructure *structure = type.getStruct();
// If this is a nameless struct, we need to use its full definition, rather than its (empty)
// name.
// TypeString() will invoke defineNameless in this case; qualifier prefixes are unnecessary for
// nameless structs in ES, as nameless structs cannot be used anywhere that layout qualifiers
// are permitted.
const TString &typeName = ((structure && !structure->name().empty())
? QualifiedStructNameString(*structure, false, false)
: TypeString(type));
const TString ®isterString =
TString("register(") + UniformRegisterPrefix(type) + str(registerIndex) + ")";
out << "uniform " << typeName << " ";
out << DecorateUniform(name, type);
out << ArrayString(type) << " : " << registerString << ";\n";
}
void UniformHLSL::uniformsHeader(TInfoSinkBase &out,
ShShaderOutput outputType,
const ReferencedSymbols &referencedUniforms)
{
if (!referencedUniforms.empty())
{
out << "// Uniforms\n\n";
}
// In the case of HLSL 4, sampler uniforms need to be grouped by type before the code is
// written. They are grouped based on the combination of the HLSL texture type and
// HLSL sampler type, enumerated in HLSLTextureSamplerGroup.
TVector<TVector<const TIntermSymbol *>> groupedSamplerUniforms;
groupedSamplerUniforms.resize(HLSL_TEXTURE_MAX + 1);
for (auto &uniformIt : referencedUniforms)
{
// Output regular uniforms. Group sampler uniforms by type.
const TIntermSymbol &uniform = *uniformIt.second;
const TType &type = uniform.getType();
const TString &name = uniform.getSymbol();
if (outputType == SH_HLSL_4_1_OUTPUT && IsSampler(type.getBasicType()))
{
HLSLTextureSamplerGroup group = TextureGroup(type.getBasicType());
groupedSamplerUniforms[group].push_back(&uniform);
}
else if (outputType == SH_HLSL_4_0_FL9_3_OUTPUT && IsSampler(type.getBasicType()))
{
unsigned int registerIndex = declareUniformAndAssignRegister(type, name);
out << "uniform " << SamplerString(type.getBasicType()) << " sampler_"
<< DecorateUniform(name, type) << ArrayString(type) << " : register(s"
<< str(registerIndex) << ");\n";
out << "uniform " << TextureString(type.getBasicType()) << " texture_"
<< DecorateUniform(name, type) << ArrayString(type) << " : register(t"
<< str(registerIndex) << ");\n";
}
else
{
unsigned int registerIndex = declareUniformAndAssignRegister(type, name);
const TStructure *structure = type.getStruct();
// If this is a nameless struct, we need to use its full definition, rather than its (empty) name.
// TypeString() will invoke defineNameless in this case; qualifier prefixes are unnecessary for
// nameless structs in ES, as nameless structs cannot be used anywhere that layout qualifiers are
// permitted.
const TString &typeName = ((structure && !structure->name().empty()) ?
QualifiedStructNameString(*structure, false, false) : TypeString(type));
const TString ®isterString = TString("register(") + UniformRegisterPrefix(type) + str(registerIndex) + ")";
out << "uniform " << typeName << " " << DecorateUniform(name, type) << ArrayString(type)
<< " : " << registerString << ";\n";
}
}
if (outputType == SH_HLSL_4_1_OUTPUT)
{
unsigned int groupTextureRegisterIndex = 0;
// TEXTURE_2D is special, index offset is assumed to be 0 and omitted in that case.
ASSERT(HLSL_TEXTURE_MIN == HLSL_TEXTURE_2D);
for (int groupId = HLSL_TEXTURE_MIN; groupId < HLSL_TEXTURE_MAX; ++groupId)
{
outputHLSLSamplerUniformGroup(out, HLSLTextureSamplerGroup(groupId),
groupedSamplerUniforms[groupId],
&groupTextureRegisterIndex);
}
}
}
