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shader: Implement DMUL and DFMA 

Also add a missing const on DADD
This commit is contained in:
ameerj 2021-03-21 02:09:14 -04:00
parent 112b8f00f0
commit c858b8ba97
8 changed files with 111 additions and 30 deletions
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2
src/shader_recompiler/CMakeLists.txt
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@ -65,6 +65,8 @@ add_library(shader_recompiler STATIC
frontend/maxwell/translate/impl/common_funcs.h
frontend/maxwell/translate/impl/condition_code_set.cpp
frontend/maxwell/translate/impl/double_add.cpp
frontend/maxwell/translate/impl/double_fused_multiply_add.cpp
frontend/maxwell/translate/impl/double_multiply.cpp
frontend/maxwell/translate/impl/exit_program.cpp
frontend/maxwell/translate/impl/find_leading_one.cpp
frontend/maxwell/translate/impl/floating_point_add.cpp

2
src/shader_recompiler/frontend/maxwell/maxwell.inc
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@ -35,7 +35,7 @@ INST(DADD_imm, "DADD (imm)", "0011 100- 0111 0---")
INST(DEPBAR, "DEPBAR", "1111 0000 1111 0---")
INST(DFMA_reg, "DFMA (reg)", "0101 1011 0111 ----")
INST(DFMA_rc, "DFMA (rc)", "0101 0011 0111 ----")
INST(DFMA_cr, "DFMA (cr)", "0010 1011 0111 ----")
INST(DFMA_cr, "DFMA (cr)", "0100 1011 0111 ----")
INST(DFMA_imm, "DFMA (imm)", "0011 011- 0111 ----")
INST(DMNMX_reg, "DMNMX (reg)", "0100 1100 0101 0---")
INST(DMNMX_cbuf, "DMNMX (cbuf)", "0101 1100 0101 0---")

2
src/shader_recompiler/frontend/maxwell/translate/impl/double_add.cpp
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@ -30,7 +30,7 @@ void DADD(TranslatorVisitor& v, u64 insn, const IR::F64& src_b) {
const IR::F64 op_a{v.ir.FPAbsNeg(src_a, dadd.abs_a != 0, dadd.neg_a != 0)};
const IR::F64 op_b{v.ir.FPAbsNeg(src_b, dadd.abs_b != 0, dadd.neg_b != 0)};
IR::FpControl control{
const IR::FpControl control{
.no_contraction{true},
.rounding{CastFpRounding(dadd.fp_rounding)},
.fmz_mode{IR::FmzMode::None},

53
src/shader_recompiler/frontend/maxwell/translate/impl/double_fused_multiply_add.cpp Normal file
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@ -0,0 +1,53 @@
// 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_encoding.h"
#include "shader_recompiler/frontend/maxwell/translate/impl/impl.h"
namespace Shader::Maxwell {
namespace {
void DFMA(TranslatorVisitor& v, u64 insn, const IR::F64& src_b, const IR::F64& src_c) {
union {
u64 raw;
BitField<0, 8, IR::Reg> dest_reg;
BitField<8, 8, IR::Reg> src_a_reg;
BitField<50, 2, FpRounding> fp_rounding;
BitField<48, 1, u64> neg_b;
BitField<49, 1, u64> neg_c;
} const dfma{insn};
const IR::F64 src_a{v.D(dfma.src_a_reg)};
const IR::F64 op_b{v.ir.FPAbsNeg(src_b, false, dfma.neg_b != 0)};
const IR::F64 op_c{v.ir.FPAbsNeg(src_c, false, dfma.neg_c != 0)};
const IR::FpControl control{
.no_contraction{true},
.rounding{CastFpRounding(dfma.fp_rounding)},
.fmz_mode{IR::FmzMode::None},
};
v.D(dfma.dest_reg, v.ir.FPFma(src_a, op_b, op_c, control));
}
} // Anonymous namespace
void TranslatorVisitor::DFMA_reg(u64 insn) {
DFMA(*this, insn, GetDoubleReg20(insn), GetDoubleReg39(insn));
}
void TranslatorVisitor::DFMA_cr(u64 insn) {
DFMA(*this, insn, GetDoubleCbuf(insn), GetDoubleReg39(insn));
}
void TranslatorVisitor::DFMA_rc(u64 insn) {
DFMA(*this, insn, GetDoubleReg39(insn), GetDoubleCbuf(insn));
}
void TranslatorVisitor::DFMA_imm(u64 insn) {
DFMA(*this, insn, GetDoubleImm20(insn), GetDoubleReg39(insn));
}
} // namespace Shader::Maxwell

45
src/shader_recompiler/frontend/maxwell/translate/impl/double_multiply.cpp Normal file
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@ -0,0 +1,45 @@
// 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_encoding.h"
#include "shader_recompiler/frontend/maxwell/translate/impl/impl.h"
namespace Shader::Maxwell {
namespace {
void DMUL(TranslatorVisitor& v, u64 insn, const IR::F64& src_b) {
union {
u64 raw;
BitField<0, 8, IR::Reg> dest_reg;
BitField<8, 8, IR::Reg> src_a_reg;
BitField<39, 2, FpRounding> fp_rounding;
BitField<48, 1, u64> neg;
} const dmul{insn};
const IR::F64 src_a{v.ir.FPAbsNeg(v.D(dmul.src_a_reg), false, dmul.neg != 0)};
const IR::FpControl control{
.no_contraction{true},
.rounding{CastFpRounding(dmul.fp_rounding)},
.fmz_mode{IR::FmzMode::None},
};
v.D(dmul.dest_reg, v.ir.FPMul(src_a, src_b, control));
}
} // Anonymous namespace
void TranslatorVisitor::DMUL_reg(u64 insn) {
DMUL(*this, insn, GetDoubleReg20(insn));
}
void TranslatorVisitor::DMUL_cbuf(u64 insn) {
DMUL(*this, insn, GetDoubleCbuf(insn));
}
void TranslatorVisitor::DMUL_imm(u64 insn) {
DMUL(*this, insn, GetDoubleImm20(insn));
}
} // namespace Shader::Maxwell

8
src/shader_recompiler/frontend/maxwell/translate/impl/impl.cpp
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@ -90,6 +90,14 @@ IR::F64 TranslatorVisitor::GetDoubleReg20(u64 insn) {
return D(reg.index);
}
IR::F64 TranslatorVisitor::GetDoubleReg39(u64 insn) {
union {
u64 raw;
BitField<39, 8, IR::Reg> index;
} const reg{insn};
return D(reg.index);
}
static std::pair<IR::U32, IR::U32> CbufAddr(u64 insn) {
union {
u64 raw;

1
src/shader_recompiler/frontend/maxwell/translate/impl/impl.h
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@ -354,6 +354,7 @@ public:
[[nodiscard]] IR::F32 GetFloatReg20(u64 insn);
[[nodiscard]] IR::F32 GetFloatReg39(u64 insn);
[[nodiscard]] IR::F64 GetDoubleReg20(u64 insn);
[[nodiscard]] IR::F64 GetDoubleReg39(u64 insn);
[[nodiscard]] IR::U32 GetCbuf(u64 insn);
[[nodiscard]] IR::F32 GetFloatCbuf(u64 insn);

28
src/shader_recompiler/frontend/maxwell/translate/impl/not_implemented.cpp
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@ -81,22 +81,6 @@ void TranslatorVisitor::DEPBAR() {
// DEPBAR is a no-op
}
void TranslatorVisitor::DFMA_reg(u64) {
ThrowNotImplemented(Opcode::DFMA_reg);
}
void TranslatorVisitor::DFMA_rc(u64) {
ThrowNotImplemented(Opcode::DFMA_rc);
}
void TranslatorVisitor::DFMA_cr(u64) {
ThrowNotImplemented(Opcode::DFMA_cr);
}
void TranslatorVisitor::DFMA_imm(u64) {
ThrowNotImplemented(Opcode::DFMA_imm);
}
void TranslatorVisitor::DMNMX_reg(u64) {
ThrowNotImplemented(Opcode::DMNMX_reg);
}
@ -109,18 +93,6 @@ void TranslatorVisitor::DMNMX_imm(u64) {
ThrowNotImplemented(Opcode::DMNMX_imm);
}
void TranslatorVisitor::DMUL_reg(u64) {
ThrowNotImplemented(Opcode::DMUL_reg);
}
void TranslatorVisitor::DMUL_cbuf(u64) {
ThrowNotImplemented(Opcode::DMUL_cbuf);
}
void TranslatorVisitor::DMUL_imm(u64) {
ThrowNotImplemented(Opcode::DMUL_imm);
}
void TranslatorVisitor::DSET_reg(u64) {
ThrowNotImplemented(Opcode::DSET_reg);
}