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// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/common_types.h"
#include "shader_recompiler/exception.h"
#include "shader_recompiler/frontend/maxwell/translate/impl/common_funcs.h"
#include "shader_recompiler/frontend/maxwell/translate/impl/impl.h"
#include "shader_recompiler/frontend/maxwell/translate/impl/video_helper.h"
namespace Shader::Maxwell {
namespace {
enum class VsetpCompareOp : u64 {
False = 0,
LessThan,
Equal,
LessThanEqual,
GreaterThan = 16,
NotEqual,
GreaterThanEqual,
True,
};
CompareOp VsetpToShaderCompareOp(VsetpCompareOp op) {
switch (op) {
case VsetpCompareOp::False:
return CompareOp::False;
case VsetpCompareOp::LessThan:
return CompareOp::LessThan;
case VsetpCompareOp::Equal:
return CompareOp::Equal;
case VsetpCompareOp::LessThanEqual:
return CompareOp::LessThanEqual;
case VsetpCompareOp::GreaterThan:
return CompareOp::GreaterThan;
case VsetpCompareOp::NotEqual:
return CompareOp::NotEqual;
case VsetpCompareOp::GreaterThanEqual:
return CompareOp::GreaterThanEqual;
case VsetpCompareOp::True:
return CompareOp::True;
default:
throw NotImplementedException("Invalid compare op {}", op);
}
}
} // Anonymous namespace
void TranslatorVisitor::VSETP(u64 insn) {
union {
u64 raw;
BitField<0, 3, IR::Pred> dest_pred_b;
BitField<3, 3, IR::Pred> dest_pred_a;
BitField<20, 16, u64> src_b_imm;
BitField<28, 2, u64> src_b_selector;
BitField<29, 2, VideoWidth> src_b_width;
BitField<36, 2, u64> src_a_selector;
BitField<37, 2, VideoWidth> src_a_width;
BitField<39, 3, IR::Pred> bop_pred;
BitField<42, 1, u64> neg_bop_pred;
BitField<43, 5, VsetpCompareOp> compare_op;
BitField<45, 2, BooleanOp> bop;
BitField<48, 1, u64> src_a_sign;
BitField<49, 1, u64> src_b_sign;
BitField<50, 1, u64> is_src_b_reg;
} const vsetp{insn};
const bool is_b_imm{vsetp.is_src_b_reg == 0};
const IR::U32 src_a{GetReg8(insn)};
const IR::U32 src_b{is_b_imm ? ir.Imm32(static_cast<u32>(vsetp.src_b_imm)) : GetReg20(insn)};
const u32 a_selector{static_cast<u32>(vsetp.src_a_selector)};
const u32 b_selector{static_cast<u32>(vsetp.src_b_selector)};
const VideoWidth a_width{vsetp.src_a_width};
const VideoWidth b_width{GetVideoSourceWidth(vsetp.src_b_width, is_b_imm)};
const bool src_a_signed{vsetp.src_a_sign != 0};
const bool src_b_signed{vsetp.src_b_sign != 0};
const IR::U32 op_a{ExtractVideoOperandValue(ir, src_a, a_width, a_selector, src_a_signed)};
const IR::U32 op_b{ExtractVideoOperandValue(ir, src_b, b_width, b_selector, src_b_signed)};
// Compare operation's sign is only dependent on operand b's sign
const bool compare_signed{src_b_signed};
const CompareOp compare_op{VsetpToShaderCompareOp(vsetp.compare_op)};
const IR::U1 comparison{IntegerCompare(ir, op_a, op_b, compare_op, compare_signed)};
const IR::U1 bop_pred{ir.GetPred(vsetp.bop_pred, vsetp.neg_bop_pred != 0)};
const IR::U1 result_a{PredicateCombine(ir, comparison, bop_pred, vsetp.bop)};
const IR::U1 result_b{PredicateCombine(ir, ir.LogicalNot(comparison), bop_pred, vsetp.bop)};
ir.SetPred(vsetp.dest_pred_a, result_a);
ir.SetPred(vsetp.dest_pred_b, result_b);
}
} // namespace Shader::Maxwell
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