forked from suyu/suyu
bf4dfb3ad4
Instead of having a vector of unique_ptr stored in a vector and returning star pointers to this, use shared_ptr. While changing initialization code, move it to a separate file when possible. This is a first step to allow code analysis and node generation beyond the ShaderIR class.
75 lines
2.7 KiB
C++
75 lines
2.7 KiB
C++
// 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 "common/logging/log.h"
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#include "video_core/engines/shader_bytecode.h"
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#include "video_core/shader/node_helper.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::HalfType;
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using Tegra::Shader::Instruction;
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using Tegra::Shader::OpCode;
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u32 ShaderIR::DecodeArithmeticHalf(NodeBlock& bb, u32 pc) {
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const Instruction instr = {program_code[pc]};
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const auto opcode = OpCode::Decode(instr);
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if (opcode->get().GetId() == OpCode::Id::HADD2_C ||
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opcode->get().GetId() == OpCode::Id::HADD2_R) {
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if (instr.alu_half.ftz != 0) {
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LOG_WARNING(HW_GPU, "{} FTZ not implemented", opcode->get().GetName());
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}
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}
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const bool negate_a =
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opcode->get().GetId() != OpCode::Id::HMUL2_R && instr.alu_half.negate_a != 0;
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const bool negate_b =
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opcode->get().GetId() != OpCode::Id::HMUL2_C && instr.alu_half.negate_b != 0;
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Node op_a = UnpackHalfFloat(GetRegister(instr.gpr8), instr.alu_half.type_a);
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op_a = GetOperandAbsNegHalf(op_a, instr.alu_half.abs_a, negate_a);
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auto [type_b, op_b] = [&]() -> std::tuple<HalfType, Node> {
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switch (opcode->get().GetId()) {
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case OpCode::Id::HADD2_C:
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case OpCode::Id::HMUL2_C:
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return {HalfType::F32, GetConstBuffer(instr.cbuf34.index, instr.cbuf34.GetOffset())};
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case OpCode::Id::HADD2_R:
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case OpCode::Id::HMUL2_R:
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return {instr.alu_half.type_b, GetRegister(instr.gpr20)};
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default:
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UNREACHABLE();
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return {HalfType::F32, Immediate(0)};
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}
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}();
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op_b = UnpackHalfFloat(op_b, type_b);
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// redeclaration to avoid a bug in clang with reusing local bindings in lambdas
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Node op_b_alt = GetOperandAbsNegHalf(op_b, instr.alu_half.abs_b, negate_b);
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Node value = [&]() {
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switch (opcode->get().GetId()) {
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case OpCode::Id::HADD2_C:
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case OpCode::Id::HADD2_R:
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return Operation(OperationCode::HAdd, PRECISE, op_a, op_b_alt);
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case OpCode::Id::HMUL2_C:
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case OpCode::Id::HMUL2_R:
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return Operation(OperationCode::HMul, PRECISE, op_a, op_b_alt);
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default:
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UNIMPLEMENTED_MSG("Unhandled half float instruction: {}", opcode->get().GetName());
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return Immediate(0);
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}
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}();
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value = GetSaturatedHalfFloat(value, instr.alu_half.saturate);
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value = HalfMerge(GetRegister(instr.gpr0), value, instr.alu_half.merge);
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SetRegister(bb, instr.gpr0, value);
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return pc;
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}
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} // namespace VideoCommon::Shader
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