diff options
Diffstat (limited to 'src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_compare_and_set.cpp')
-rw-r--r-- | src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_compare_and_set.cpp | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_compare_and_set.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_compare_and_set.cpp new file mode 100644 index 000000000..c5417775e --- /dev/null +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_compare_and_set.cpp @@ -0,0 +1,65 @@ +// 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 { +void FSET(TranslatorVisitor& v, u64 insn, const IR::F32& src_b) { + union { + u64 insn; + BitField<0, 8, IR::Reg> dest_reg; + BitField<8, 8, IR::Reg> src_a_reg; + BitField<39, 3, IR::Pred> pred; + BitField<42, 1, u64> neg_pred; + BitField<43, 1, u64> negate_a; + BitField<44, 1, u64> abs_b; + BitField<45, 2, BooleanOp> bop; + BitField<48, 4, FPCompareOp> compare_op; + BitField<52, 1, u64> bf; + BitField<53, 1, u64> negate_b; + BitField<54, 1, u64> abs_a; + BitField<55, 1, u64> ftz; + } const fset{insn}; + + const IR::F32 op_a{v.ir.FPAbsNeg(v.F(fset.src_a_reg), fset.abs_a != 0, fset.negate_a != 0)}; + const IR::F32 op_b = v.ir.FPAbsNeg(src_b, fset.abs_b != 0, fset.negate_b != 0); + const IR::FpControl control{ + .no_contraction{false}, + .rounding{IR::FpRounding::DontCare}, + .fmz_mode{fset.ftz != 0 ? IR::FmzMode::FTZ : IR::FmzMode::None}, + }; + + IR::U1 pred{v.ir.GetPred(fset.pred)}; + if (fset.neg_pred != 0) { + pred = v.ir.LogicalNot(pred); + } + const IR::U1 cmp_result{FloatingPointCompare(v.ir, op_a, op_b, fset.compare_op, control)}; + const IR::U1 bop_result{PredicateCombine(v.ir, cmp_result, pred, fset.bop)}; + + const IR::U32 one_mask{v.ir.Imm32(-1)}; + const IR::U32 fp_one{v.ir.Imm32(0x3f800000)}; + const IR::U32 fail_result{v.ir.Imm32(0)}; + const IR::U32 pass_result{fset.bf == 0 ? one_mask : fp_one}; + + v.X(fset.dest_reg, IR::U32{v.ir.Select(bop_result, pass_result, fail_result)}); +} +} // Anonymous namespace + +void TranslatorVisitor::FSET_reg(u64 insn) { + FSET(*this, insn, GetFloatReg20(insn)); +} + +void TranslatorVisitor::FSET_cbuf(u64 insn) { + FSET(*this, insn, GetFloatCbuf(insn)); +} + +void TranslatorVisitor::FSET_imm(u64 insn) { + FSET(*this, insn, GetFloatImm20(insn)); +} + +} // namespace Shader::Maxwell |