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// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#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<47, 1, u64> cc;
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 zero{v.ir.Imm32(0)};
const IR::U32 pass_result{fset.bf == 0 ? one_mask : fp_one};
const IR::U32 result{v.ir.Select(bop_result, pass_result, zero)};
v.X(fset.dest_reg, result);
if (fset.cc != 0) {
const IR::U1 is_zero{v.ir.IEqual(result, zero)};
v.SetZFlag(is_zero);
if (fset.bf != 0) {
v.ResetSFlag();
} else {
v.SetSFlag(v.ir.LogicalNot(is_zero));
}
v.ResetCFlag();
v.ResetOFlag();
}
}
} // 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
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