2018-12-20 23:09:21 +01:00
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// Copyright 2018 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include "common/assert.h"
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#include "common/common_types.h"
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#include "video_core/engines/shader_bytecode.h"
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#include "video_core/shader/shader_ir.h"
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namespace VideoCommon::Shader {
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using Tegra::Shader::Instruction;
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using Tegra::Shader::OpCode;
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2019-01-30 05:56:33 +01:00
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u32 ShaderIR::DecodeArithmeticHalfImmediate(BasicBlock& bb, u32 pc) {
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2018-12-20 23:09:21 +01:00
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const Instruction instr = {program_code[pc]};
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const auto opcode = OpCode::Decode(instr);
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2018-12-18 07:16:09 +01:00
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if (opcode->get().GetId() == OpCode::Id::HADD2_IMM) {
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UNIMPLEMENTED_IF(instr.alu_half_imm.ftz != 0);
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} else {
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UNIMPLEMENTED_IF(instr.alu_half_imm.precision != Tegra::Shader::HalfPrecision::None);
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}
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UNIMPLEMENTED_IF_MSG(instr.alu_half_imm.saturate != 0,
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"Half float immediate saturation not implemented");
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Node op_a = GetRegister(instr.gpr8);
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op_a = GetOperandAbsNegHalf(op_a, instr.alu_half_imm.abs_a, instr.alu_half_imm.negate_a);
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const Node op_b = UnpackHalfImmediate(instr, true);
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Node value = [&]() {
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MetaHalfArithmetic meta{true, {instr.alu_half_imm.type_a}};
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switch (opcode->get().GetId()) {
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case OpCode::Id::HADD2_IMM:
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return Operation(OperationCode::HAdd, meta, op_a, op_b);
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case OpCode::Id::HMUL2_IMM:
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return Operation(OperationCode::HMul, meta, op_a, op_b);
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default:
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UNREACHABLE();
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return Immediate(0);
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}
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}();
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value = HalfMerge(GetRegister(instr.gpr0), value, instr.alu_half_imm.merge);
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SetRegister(bb, instr.gpr0, value);
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2018-12-20 23:09:21 +01:00
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return pc;
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}
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} // namespace VideoCommon::Shader
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