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Diffstat (limited to 'src/video_core/shader/decode/conversion.cpp')
| -rw-r--r-- | src/video_core/shader/decode/conversion.cpp | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/src/video_core/shader/decode/conversion.cpp b/src/video_core/shader/decode/conversion.cpp new file mode 100644 index 000000000..ee18d3a99 --- /dev/null +++ b/src/video_core/shader/decode/conversion.cpp @@ -0,0 +1,149 @@ +// 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/shader_ir.h" + +namespace VideoCommon::Shader { + +using Tegra::Shader::Instruction; +using Tegra::Shader::OpCode; +using Tegra::Shader::Register; + +u32 ShaderIR::DecodeConversion(BasicBlock& bb, const BasicBlock& code, u32 pc) { + const Instruction instr = {program_code[pc]}; + const auto opcode = OpCode::Decode(instr); + + switch (opcode->get().GetId()) { + case OpCode::Id::I2I_R: { + UNIMPLEMENTED_IF(instr.conversion.selector); + + const bool input_signed = instr.conversion.is_input_signed; + const bool output_signed = instr.conversion.is_output_signed; + + Node value = GetRegister(instr.gpr20); + value = ConvertIntegerSize(value, instr.conversion.src_size, input_signed); + + value = GetOperandAbsNegInteger(value, instr.conversion.abs_a, instr.conversion.negate_a, + input_signed); + if (input_signed != output_signed) { + value = SignedOperation(OperationCode::ICastUnsigned, output_signed, NO_PRECISE, value); + } + + SetInternalFlagsFromInteger(bb, value, instr.generates_cc); + SetRegister(bb, instr.gpr0, value); + break; + } + case OpCode::Id::I2F_R: + case OpCode::Id::I2F_C: { + UNIMPLEMENTED_IF(instr.conversion.dest_size != Register::Size::Word); + UNIMPLEMENTED_IF(instr.conversion.selector); + UNIMPLEMENTED_IF_MSG(instr.generates_cc, + "Condition codes generation in I2F is not implemented"); + + Node value = [&]() { + if (instr.is_b_gpr) { + return GetRegister(instr.gpr20); + } else { + return GetConstBuffer(instr.cbuf34.index, instr.cbuf34.offset); + } + }(); + const bool input_signed = instr.conversion.is_input_signed; + value = ConvertIntegerSize(value, instr.conversion.src_size, input_signed); + value = GetOperandAbsNegInteger(value, instr.conversion.abs_a, false, input_signed); + value = SignedOperation(OperationCode::FCastInteger, input_signed, PRECISE, value); + value = GetOperandAbsNegFloat(value, false, instr.conversion.negate_a); + + SetInternalFlagsFromFloat(bb, value, instr.generates_cc); + SetRegister(bb, instr.gpr0, value); + break; + } + case OpCode::Id::F2F_R: + case OpCode::Id::F2F_C: { + UNIMPLEMENTED_IF(instr.conversion.dest_size != Register::Size::Word); + UNIMPLEMENTED_IF(instr.conversion.src_size != Register::Size::Word); + UNIMPLEMENTED_IF_MSG(instr.generates_cc, + "Condition codes generation in F2F is not implemented"); + + Node value = [&]() { + if (instr.is_b_gpr) { + return GetRegister(instr.gpr20); + } else { + return GetConstBuffer(instr.cbuf34.index, instr.cbuf34.offset); + } + }(); + + value = GetOperandAbsNegFloat(value, instr.conversion.abs_a, instr.conversion.negate_a); + + value = [&]() { + switch (instr.conversion.f2f.rounding) { + case Tegra::Shader::F2fRoundingOp::None: + return value; + case Tegra::Shader::F2fRoundingOp::Round: + return Operation(OperationCode::FRoundEven, PRECISE, value); + case Tegra::Shader::F2fRoundingOp::Floor: + return Operation(OperationCode::FFloor, PRECISE, value); + case Tegra::Shader::F2fRoundingOp::Ceil: + return Operation(OperationCode::FCeil, PRECISE, value); + case Tegra::Shader::F2fRoundingOp::Trunc: + return Operation(OperationCode::FTrunc, PRECISE, value); + } + UNIMPLEMENTED_MSG("Unimplemented F2F rounding mode {}", + static_cast<u32>(instr.conversion.f2f.rounding.Value())); + return Immediate(0); + }(); + value = GetSaturatedFloat(value, instr.alu.saturate_d); + + SetInternalFlagsFromFloat(bb, value, instr.generates_cc); + SetRegister(bb, instr.gpr0, value); + break; + } + case OpCode::Id::F2I_R: + case OpCode::Id::F2I_C: { + UNIMPLEMENTED_IF(instr.conversion.src_size != Register::Size::Word); + UNIMPLEMENTED_IF_MSG(instr.generates_cc, + "Condition codes generation in F2I is not implemented"); + Node value = [&]() { + if (instr.is_b_gpr) { + return GetRegister(instr.gpr20); + } else { + return GetConstBuffer(instr.cbuf34.index, instr.cbuf34.offset); + } + }(); + + value = GetOperandAbsNegFloat(value, instr.conversion.abs_a, instr.conversion.negate_a); + + value = [&]() { + switch (instr.conversion.f2i.rounding) { + case Tegra::Shader::F2iRoundingOp::None: + return value; + case Tegra::Shader::F2iRoundingOp::Floor: + return Operation(OperationCode::FFloor, PRECISE, value); + case Tegra::Shader::F2iRoundingOp::Ceil: + return Operation(OperationCode::FCeil, PRECISE, value); + case Tegra::Shader::F2iRoundingOp::Trunc: + return Operation(OperationCode::FTrunc, PRECISE, value); + default: + UNIMPLEMENTED_MSG("Unimplemented F2I rounding mode {}", + static_cast<u32>(instr.conversion.f2i.rounding.Value())); + return Immediate(0); + } + }(); + const bool is_signed = instr.conversion.is_output_signed; + value = SignedOperation(OperationCode::ICastFloat, is_signed, PRECISE, value); + value = ConvertIntegerSize(value, instr.conversion.dest_size, is_signed); + + SetRegister(bb, instr.gpr0, value); + break; + } + default: + UNIMPLEMENTED_MSG("Unhandled conversion instruction: {}", opcode->get().GetName()); + } + + return pc; +} + +} // namespace VideoCommon::Shader
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