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shader_ir: Add integer helpers

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This commit is contained in:
ReinUsesLisp 2018-12-20 22:57:16 -03:00
parent 833d0806f9
commit e3c55e31d7
2 changed files with 40 additions and 0 deletions
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35
src/video_core/shader/shader_ir.cpp
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@ -140,6 +140,41 @@ Node ShaderIR::GetSaturatedFloat(Node value, bool saturate) {
return Operation(OperationCode::FClamp, NO_PRECISE, value, positive_zero, positive_one);
}
Node ShaderIR::ConvertIntegerSize(Node value, Tegra::Shader::Register::Size size, bool is_signed) {
switch (size) {
case Register::Size::Byte:
value = SignedOperation(OperationCode::ILogicalShiftLeft, is_signed, NO_PRECISE, value,
Immediate(24));
value = SignedOperation(OperationCode::IArithmeticShiftRight, is_signed, NO_PRECISE, value,
Immediate(24));
return value;
case Register::Size::Short:
value = SignedOperation(OperationCode::ILogicalShiftLeft, is_signed, NO_PRECISE, value,
Immediate(16));
value = SignedOperation(OperationCode::IArithmeticShiftRight, is_signed, NO_PRECISE, value,
Immediate(16));
case Register::Size::Word:
// Default - do nothing
return value;
default:
UNREACHABLE_MSG("Unimplemented conversion size: {}", static_cast<u32>(size));
}
}
Node ShaderIR::GetOperandAbsNegInteger(Node value, bool absolute, bool negate, bool is_signed) {
if (!is_signed) {
// Absolute or negate on an unsigned is pointless
return value;
}
if (absolute) {
value = Operation(OperationCode::IAbsolute, NO_PRECISE, value);
}
if (negate) {
value = Operation(OperationCode::INegate, NO_PRECISE, value);
}
return value;
}
void ShaderIR::SetRegister(BasicBlock& bb, Register dest, Node src) {
bb.push_back(Operation(OperationCode::Assign, GetRegister(dest), src));
}

5
src/video_core/shader/shader_ir.h
View file

@ -648,6 +648,11 @@ private:
/// Conditionally saturates a float
Node GetSaturatedFloat(Node value, bool saturate = true);
/// Converts an integer to different sizes.
Node ConvertIntegerSize(Node value, Tegra::Shader::Register::Size size, bool is_signed);
/// Conditionally absolute/negated integer. Absolute is applied first
Node GetOperandAbsNegInteger(Node value, bool absolute, bool negate, bool is_signed);
template <typename... T>
inline Node Operation(OperationCode code, const T*... operands) {
return StoreNode(OperationNode(code, operands...));