From 382cba94ed52f4fae7db437a3056563ba2110e8b Mon Sep 17 00:00:00 2001 From: ameerj <52414509+ameerj@users.noreply.github.com> Date: Tue, 2 Mar 2021 14:59:28 -0500 Subject: [PATCH] shader: Implement IADD3 --- src/shader_recompiler/CMakeLists.txt | 1 + .../impl/integer_add_three_input.cpp | 103 ++++++++++++++++++ .../translate/impl/not_implemented.cpp | 12 -- 3 files changed, 104 insertions(+), 12 deletions(-) create mode 100644 src/shader_recompiler/frontend/maxwell/translate/impl/integer_add_three_input.cpp diff --git a/src/shader_recompiler/CMakeLists.txt b/src/shader_recompiler/CMakeLists.txt index 981a79e442..8a0f73a4d3 100644 --- a/src/shader_recompiler/CMakeLists.txt +++ b/src/shader_recompiler/CMakeLists.txt @@ -74,6 +74,7 @@ add_library(shader_recompiler STATIC frontend/maxwell/translate/impl/impl.cpp frontend/maxwell/translate/impl/impl.h frontend/maxwell/translate/impl/integer_add.cpp + frontend/maxwell/translate/impl/integer_add_three_input.cpp frontend/maxwell/translate/impl/integer_compare.cpp frontend/maxwell/translate/impl/integer_compare_and_set.cpp frontend/maxwell/translate/impl/integer_minimum_maximum.cpp diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/integer_add_three_input.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/integer_add_three_input.cpp new file mode 100644 index 0000000000..c2dbd79981 --- /dev/null +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/integer_add_three_input.cpp @@ -0,0 +1,103 @@ +// 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/impl.h" + +namespace Shader::Maxwell { +namespace { +enum class Shift : u64 { + None, + Right, + Left, +}; +enum class Half : u64 { + All, + Lower, + Upper, +}; + +[[nodiscard]] IR::U32 IntegerHalf(IR::IREmitter& ir, const IR::U32& value, Half half) { + constexpr bool is_signed{false}; + switch (half) { + case Half::Lower: + return ir.BitFieldExtract(value, ir.Imm32(0), ir.Imm32(16), is_signed); + case Half::Upper: + return ir.BitFieldExtract(value, ir.Imm32(16), ir.Imm32(16), is_signed); + default: + return value; + } +} + +[[nodiscard]] IR::U32 IntegerShift(IR::IREmitter& ir, const IR::U32& value, Shift shift) { + switch (shift) { + case Shift::Right: + return ir.ShiftRightLogical(value, ir.Imm32(16)); + case Shift::Left: + return ir.ShiftLeftLogical(value, ir.Imm32(16)); + default: + return value; + } +} + +void IADD3(TranslatorVisitor& v, u64 insn, IR::U32 op_b, IR::U32 op_c) { + union { + u64 insn; + BitField<0, 8, IR::Reg> dest_reg; + BitField<8, 8, IR::Reg> src_a; + BitField<31, 2, Half> half_c; + BitField<33, 2, Half> half_b; + BitField<35, 2, Half> half_a; + BitField<37, 2, Shift> shift; + BitField<47, 1, u64> cc; + BitField<48, 1, u64> x; + BitField<49, 1, u64> neg_c; + BitField<50, 1, u64> neg_b; + BitField<51, 1, u64> neg_a; + } iadd3{insn}; + + if (iadd3.x != 0) { + throw NotImplementedException("IADD3 X"); + } + if (iadd3.cc != 0) { + throw NotImplementedException("IADD3 CC"); + } + + IR::U32 op_a{v.X(iadd3.src_a)}; + op_a = IntegerHalf(v.ir, op_a, iadd3.half_a); + op_b = IntegerHalf(v.ir, op_b, iadd3.half_b); + op_c = IntegerHalf(v.ir, op_c, iadd3.half_c); + + if (iadd3.neg_a != 0) { + op_a = v.ir.INeg(op_a); + } + if (iadd3.neg_b != 0) { + op_b = v.ir.INeg(op_b); + } + if (iadd3.neg_c != 0) { + op_c = v.ir.INeg(op_c); + } + + IR::U32 lhs{v.ir.IAdd(op_a, op_b)}; + lhs = IntegerShift(v.ir, lhs, iadd3.shift); + const IR::U32 result{v.ir.IAdd(lhs, op_c)}; + + v.X(iadd3.dest_reg, result); +} +} // Anonymous namespace + +void TranslatorVisitor::IADD3_reg(u64 insn) { + IADD3(*this, insn, GetReg20(insn), GetReg39(insn)); +} + +void TranslatorVisitor::IADD3_cbuf(u64 insn) { + IADD3(*this, insn, GetCbuf(insn), GetReg39(insn)); +} + +void TranslatorVisitor::IADD3_imm(u64 insn) { + IADD3(*this, insn, GetImm20(insn), GetReg39(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 91a9858c64..c93304a679 100644 --- a/src/shader_recompiler/frontend/maxwell/translate/impl/not_implemented.cpp +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/not_implemented.cpp @@ -365,18 +365,6 @@ void TranslatorVisitor::I2I_imm(u64) { ThrowNotImplemented(Opcode::I2I_imm); } -void TranslatorVisitor::IADD3_reg(u64) { - ThrowNotImplemented(Opcode::IADD3_reg); -} - -void TranslatorVisitor::IADD3_cbuf(u64) { - ThrowNotImplemented(Opcode::IADD3_cbuf); -} - -void TranslatorVisitor::IADD3_imm(u64) { - ThrowNotImplemented(Opcode::IADD3_imm); -} - void TranslatorVisitor::IDE(u64) { ThrowNotImplemented(Opcode::IDE); }