shader_ir: Add half float helpers
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@ -175,6 +175,43 @@ Node ShaderIR::GetOperandAbsNegInteger(Node value, bool absolute, bool negate, b
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return value;
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}
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Node ShaderIR::UnpackHalfImmediate(Instruction instr, bool has_negation) {
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const Node value = Immediate(instr.half_imm.PackImmediates());
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if (!has_negation) {
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return value;
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}
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const Node first_negate = GetPredicate(instr.half_imm.first_negate != 0);
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const Node second_negate = GetPredicate(instr.half_imm.second_negate != 0);
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return Operation(OperationCode::HNegate, HALF_NO_PRECISE, value, first_negate, second_negate);
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}
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Node ShaderIR::HalfMerge(Node dest, Node src, Tegra::Shader::HalfMerge merge) {
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switch (merge) {
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case Tegra::Shader::HalfMerge::H0_H1:
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return src;
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case Tegra::Shader::HalfMerge::F32:
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return Operation(OperationCode::HMergeF32, src);
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case Tegra::Shader::HalfMerge::Mrg_H0:
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return Operation(OperationCode::HMergeH0, dest, src);
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case Tegra::Shader::HalfMerge::Mrg_H1:
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return Operation(OperationCode::HMergeH1, dest, src);
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}
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UNREACHABLE();
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return src;
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}
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Node ShaderIR::GetOperandAbsNegHalf(Node value, bool absolute, bool negate) {
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if (absolute) {
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value = Operation(OperationCode::HAbsolute, HALF_NO_PRECISE, value);
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}
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if (negate) {
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value = Operation(OperationCode::HNegate, HALF_NO_PRECISE, value, GetPredicate(true),
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GetPredicate(true));
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}
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return value;
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}
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void ShaderIR::SetRegister(BasicBlock& bb, Register dest, Node src) {
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bb.push_back(Operation(OperationCode::Assign, GetRegister(dest), src));
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}
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@ -653,6 +653,13 @@ private:
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/// Conditionally absolute/negated integer. Absolute is applied first
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Node GetOperandAbsNegInteger(Node value, bool absolute, bool negate, bool is_signed);
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/// Unpacks a half immediate from an instruction
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Node UnpackHalfImmediate(Tegra::Shader::Instruction instr, bool has_negation);
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/// Merges a half pair into another value
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Node HalfMerge(Node dest, Node src, Tegra::Shader::HalfMerge merge);
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/// Conditionally absolute/negated half float pair. Absolute is applied first
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Node GetOperandAbsNegHalf(Node value, bool absolute, bool negate);
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template <typename... T>
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inline Node Operation(OperationCode code, const T*... operands) {
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return StoreNode(OperationNode(code, operands...));
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