diff options
Diffstat (limited to 'src/video_core/shader/decode/xmad.cpp')
| -rw-r--r-- | src/video_core/shader/decode/xmad.cpp | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/src/video_core/shader/decode/xmad.cpp b/src/video_core/shader/decode/xmad.cpp deleted file mode 100644 index 233b8fa42..000000000 --- a/src/video_core/shader/decode/xmad.cpp +++ /dev/null @@ -1,156 +0,0 @@ -// Copyright 2018 yuzu Emulator Project -// Licensed under GPLv2 or any later version -// Refer to the license.txt file included. - -#include "common/assert.h" -#include "common/common_types.h" -#include "video_core/engines/shader_bytecode.h" -#include "video_core/shader/node_helper.h" -#include "video_core/shader/shader_ir.h" - -namespace VideoCommon::Shader { - -using Tegra::Shader::Instruction; -using Tegra::Shader::OpCode; -using Tegra::Shader::PredCondition; - -u32 ShaderIR::DecodeXmad(NodeBlock& bb, u32 pc) { - const Instruction instr = {program_code[pc]}; - const auto opcode = OpCode::Decode(instr); - - UNIMPLEMENTED_IF(instr.xmad.sign_a); - UNIMPLEMENTED_IF(instr.xmad.sign_b); - UNIMPLEMENTED_IF_MSG(instr.generates_cc, - "Condition codes generation in XMAD is not implemented"); - - Node op_a = GetRegister(instr.gpr8); - - // TODO(bunnei): Needs to be fixed once op_a or op_b is signed - UNIMPLEMENTED_IF(instr.xmad.sign_a != instr.xmad.sign_b); - const bool is_signed_a = instr.xmad.sign_a == 1; - const bool is_signed_b = instr.xmad.sign_b == 1; - const bool is_signed_c = is_signed_a; - - auto [is_merge, is_psl, is_high_b, mode, op_b_binding, - op_c] = [&]() -> std::tuple<bool, bool, bool, Tegra::Shader::XmadMode, Node, Node> { - switch (opcode->get().GetId()) { - case OpCode::Id::XMAD_CR: - return {instr.xmad.merge_56, - instr.xmad.product_shift_left_second, - instr.xmad.high_b, - instr.xmad.mode_cbf, - GetConstBuffer(instr.cbuf34.index, instr.cbuf34.GetOffset()), - GetRegister(instr.gpr39)}; - case OpCode::Id::XMAD_RR: - return {instr.xmad.merge_37, instr.xmad.product_shift_left, instr.xmad.high_b_rr, - instr.xmad.mode, GetRegister(instr.gpr20), GetRegister(instr.gpr39)}; - case OpCode::Id::XMAD_RC: - return {false, - false, - instr.xmad.high_b, - instr.xmad.mode_cbf, - GetRegister(instr.gpr39), - GetConstBuffer(instr.cbuf34.index, instr.cbuf34.GetOffset())}; - case OpCode::Id::XMAD_IMM: - return {instr.xmad.merge_37, - instr.xmad.product_shift_left, - false, - instr.xmad.mode, - Immediate(static_cast<u32>(instr.xmad.imm20_16)), - GetRegister(instr.gpr39)}; - default: - UNIMPLEMENTED_MSG("Unhandled XMAD instruction: {}", opcode->get().GetName()); - return {false, false, false, Tegra::Shader::XmadMode::None, Immediate(0), Immediate(0)}; - } - }(); - - op_a = SignedOperation(OperationCode::IBitfieldExtract, is_signed_a, std::move(op_a), - instr.xmad.high_a ? Immediate(16) : Immediate(0), Immediate(16)); - - const Node original_b = op_b_binding; - const Node op_b = - SignedOperation(OperationCode::IBitfieldExtract, is_signed_b, std::move(op_b_binding), - is_high_b ? Immediate(16) : Immediate(0), Immediate(16)); - - // we already check sign_a and sign_b is difference or not before so just use one in here. - Node product = SignedOperation(OperationCode::IMul, is_signed_a, op_a, op_b); - if (is_psl) { - product = - SignedOperation(OperationCode::ILogicalShiftLeft, is_signed_a, product, Immediate(16)); - } - SetTemporary(bb, 0, product); - product = GetTemporary(0); - - Node original_c = op_c; - const Tegra::Shader::XmadMode set_mode = mode; // Workaround to clang compile error - op_c = [&] { - switch (set_mode) { - case Tegra::Shader::XmadMode::None: - return original_c; - case Tegra::Shader::XmadMode::CLo: - return BitfieldExtract(std::move(original_c), 0, 16); - case Tegra::Shader::XmadMode::CHi: - return BitfieldExtract(std::move(original_c), 16, 16); - case Tegra::Shader::XmadMode::CBcc: { - Node shifted_b = SignedOperation(OperationCode::ILogicalShiftLeft, is_signed_b, - original_b, Immediate(16)); - return SignedOperation(OperationCode::IAdd, is_signed_c, std::move(original_c), - std::move(shifted_b)); - } - case Tegra::Shader::XmadMode::CSfu: { - const Node comp_a = - GetPredicateComparisonInteger(PredCondition::EQ, is_signed_a, op_a, Immediate(0)); - const Node comp_b = - GetPredicateComparisonInteger(PredCondition::EQ, is_signed_b, op_b, Immediate(0)); - const Node comp = Operation(OperationCode::LogicalOr, comp_a, comp_b); - - const Node comp_minus_a = GetPredicateComparisonInteger( - PredCondition::NE, is_signed_a, - SignedOperation(OperationCode::IBitwiseAnd, is_signed_a, op_a, - Immediate(0x80000000)), - Immediate(0)); - const Node comp_minus_b = GetPredicateComparisonInteger( - PredCondition::NE, is_signed_b, - SignedOperation(OperationCode::IBitwiseAnd, is_signed_b, op_b, - Immediate(0x80000000)), - Immediate(0)); - - Node new_c = Operation( - OperationCode::Select, comp_minus_a, - SignedOperation(OperationCode::IAdd, is_signed_c, original_c, Immediate(-65536)), - original_c); - new_c = Operation( - OperationCode::Select, comp_minus_b, - SignedOperation(OperationCode::IAdd, is_signed_c, new_c, Immediate(-65536)), - std::move(new_c)); - - return Operation(OperationCode::Select, comp, original_c, std::move(new_c)); - } - default: - UNREACHABLE(); - return Immediate(0); - } - }(); - - SetTemporary(bb, 1, op_c); - op_c = GetTemporary(1); - - // TODO(Rodrigo): Use an appropiate sign for this operation - Node sum = SignedOperation(OperationCode::IAdd, is_signed_a, product, std::move(op_c)); - SetTemporary(bb, 2, sum); - sum = GetTemporary(2); - if (is_merge) { - const Node a = SignedOperation(OperationCode::IBitfieldExtract, is_signed_a, std::move(sum), - Immediate(0), Immediate(16)); - const Node b = SignedOperation(OperationCode::ILogicalShiftLeft, is_signed_b, original_b, - Immediate(16)); - sum = SignedOperation(OperationCode::IBitwiseOr, is_signed_a, a, b); - } - - SetInternalFlagsFromInteger(bb, sum, instr.generates_cc); - SetRegister(bb, instr.gpr0, std::move(sum)); - - return pc; -} - -} // namespace VideoCommon::Shader |