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author | ameerj <52414509+ameerj@users.noreply.github.com> | 2021-03-11 04:42:17 +0100 |
---|---|---|
committer | ameerj <52414509+ameerj@users.noreply.github.com> | 2021-07-23 03:51:23 +0200 |
commit | ba8c1d2eb479d04b2b0d847efd67468b688765d4 (patch) | |
tree | c92c17f08ed3b313bbdb66917767ef8074d43c92 /src/shader_recompiler/frontend/maxwell | |
parent | shader: Partial implementation of LDC (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_compare.cpp | 116 | ||||
-rw-r--r-- | src/shader_recompiler/frontend/maxwell/translate/impl/not_implemented.cpp | 16 |
2 files changed, 116 insertions, 16 deletions
diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_compare.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_compare.cpp new file mode 100644 index 000000000..21cb80d67 --- /dev/null +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_compare.cpp @@ -0,0 +1,116 @@ +// Copyright 2021 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include "common/bit_field.h" +#include "common/common_types.h" +#include "shader_recompiler/frontend/maxwell/translate/impl/common_funcs.h" +#include "shader_recompiler/frontend/maxwell/translate/impl/impl.h" + +namespace Shader::Maxwell { +namespace { +enum class FPCompareOp : u64 { + F, + LT, + EQ, + LE, + GT, + NE, + GE, + NUM, + Nan, + LTU, + EQU, + LEU, + GTU, + NEU, + GEU, + T, +}; + +bool IsCompareOpOrdered(FPCompareOp op) { + switch (op) { + case FPCompareOp::LTU: + case FPCompareOp::EQU: + case FPCompareOp::LEU: + case FPCompareOp::GTU: + case FPCompareOp::NEU: + case FPCompareOp::GEU: + return false; + default: + return true; + } +} + +IR::U1 FloatingPointCompare(IR::IREmitter& ir, const IR::F32& operand_1, const IR::F32& operand_2, + FPCompareOp compare_op, IR::FpControl control) { + const bool ordered{IsCompareOpOrdered(compare_op)}; + switch (compare_op) { + case FPCompareOp::F: + return ir.Imm1(false); + case FPCompareOp::LT: + case FPCompareOp::LTU: + return ir.FPLessThan(operand_1, operand_2, control, ordered); + case FPCompareOp::EQ: + case FPCompareOp::EQU: + return ir.FPEqual(operand_1, operand_2, control, ordered); + case FPCompareOp::LE: + case FPCompareOp::LEU: + return ir.FPLessThanEqual(operand_1, operand_2, control, ordered); + case FPCompareOp::GT: + case FPCompareOp::GTU: + return ir.FPGreaterThan(operand_1, operand_2, control, ordered); + case FPCompareOp::NE: + case FPCompareOp::NEU: + return ir.FPNotEqual(operand_1, operand_2, control, ordered); + case FPCompareOp::GE: + case FPCompareOp::GEU: + return ir.FPGreaterThanEqual(operand_1, operand_2, control, ordered); + case FPCompareOp::NUM: + return ir.FPOrdered(operand_1, operand_2); + case FPCompareOp::Nan: + return ir.FPUnordered(operand_1, operand_2); + case FPCompareOp::T: + return ir.Imm1(true); + default: + throw NotImplementedException("Invalid compare op {}", compare_op); + } +} + +void FCMP(TranslatorVisitor& v, u64 insn, const IR::U32& src_a, const IR::F32& operand) { + union { + u64 insn; + BitField<0, 8, IR::Reg> dest_reg; + BitField<8, 8, IR::Reg> src_reg; + BitField<47, 1, u64> ftz; + BitField<48, 4, FPCompareOp> compare_op; + } const fcmp{insn}; + + const IR::F32 zero{v.ir.Imm32(0.0f)}; + const IR::F32 neg_zero{v.ir.Imm32(-0.0f)}; + IR::FpControl control{.fmz_mode{fcmp.ftz != 0 ? IR::FmzMode::FTZ : IR::FmzMode::None}}; + const IR::U1 cmp_result{FloatingPointCompare(v.ir, operand, zero, fcmp.compare_op, control)}; + const IR::U32 src_reg{v.X(fcmp.src_reg)}; + const IR::U32 result{v.ir.Select(cmp_result, src_reg, src_a)}; + + v.X(fcmp.dest_reg, result); +} +} // Anonymous namespace + +void TranslatorVisitor::FCMP_reg(u64 insn) { + FCMP(*this, insn, GetReg20(insn), GetFloatReg39(insn)); +} + +void TranslatorVisitor::FCMP_rc(u64 insn) { + FCMP(*this, insn, GetReg39(insn), GetFloatCbuf(insn)); +} + +void TranslatorVisitor::FCMP_cr(u64 insn) { + FCMP(*this, insn, GetCbuf(insn), GetFloatReg39(insn)); +} + +void TranslatorVisitor::FCMP_imm(u64 insn) { + FCMP(*this, insn, GetReg39(insn), GetFloatImm20(insn)); +} + +} // namespace Shader::Maxwell diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/not_implemented.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/not_implemented.cpp index 5b153acff..e1904472f 100644 --- a/src/shader_recompiler/frontend/maxwell/translate/impl/not_implemented.cpp +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/not_implemented.cpp @@ -201,22 +201,6 @@ void TranslatorVisitor::FCHK_imm(u64) { ThrowNotImplemented(Opcode::FCHK_imm); } -void TranslatorVisitor::FCMP_reg(u64) { - ThrowNotImplemented(Opcode::FCMP_reg); -} - -void TranslatorVisitor::FCMP_rc(u64) { - ThrowNotImplemented(Opcode::FCMP_rc); -} - -void TranslatorVisitor::FCMP_cr(u64) { - ThrowNotImplemented(Opcode::FCMP_cr); -} - -void TranslatorVisitor::FCMP_imm(u64) { - ThrowNotImplemented(Opcode::FCMP_imm); -} - void TranslatorVisitor::FMNMX_reg(u64) { ThrowNotImplemented(Opcode::FMNMX_reg); } |