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Diffstat (limited to '')
-rw-r--r-- | src/shader_recompiler/frontend/maxwell/translate/impl/video_minimum_maximum.cpp | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/video_minimum_maximum.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/video_minimum_maximum.cpp new file mode 100644 index 000000000..78869601f --- /dev/null +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/video_minimum_maximum.cpp @@ -0,0 +1,92 @@ +// 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/impl.h" +#include "shader_recompiler/frontend/maxwell/translate/impl/video_helper.h" + +namespace Shader::Maxwell { +namespace { +enum class VideoMinMaxOps : u64 { + MRG_16H, + MRG_16L, + MRG_8B0, + MRG_8B2, + ACC, + MIN, + MAX, +}; + +[[nodiscard]] IR::U32 ApplyVideoMinMaxOp(IR::IREmitter& ir, const IR::U32& lhs, const IR::U32& rhs, + VideoMinMaxOps op, bool is_signed) { + switch (op) { + case VideoMinMaxOps::MIN: + return ir.IMin(lhs, rhs, is_signed); + case VideoMinMaxOps::MAX: + return ir.IMax(lhs, rhs, is_signed); + default: + throw NotImplementedException("VMNMX op {}", op); + } +} +} // Anonymous namespace + +void TranslatorVisitor::VMNMX(u64 insn) { + union { + u64 raw; + BitField<0, 8, IR::Reg> dest_reg; + 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<47, 1, u64> cc; + BitField<48, 1, u64> src_a_sign; + BitField<49, 1, u64> src_b_sign; + BitField<50, 1, u64> is_src_b_reg; + BitField<51, 3, VideoMinMaxOps> op; + BitField<54, 1, u64> dest_sign; + BitField<55, 1, u64> sat; + BitField<56, 1, u64> mx; + } const vmnmx{insn}; + + if (vmnmx.cc != 0) { + throw NotImplementedException("VMNMX CC"); + } + if (vmnmx.sat != 0) { + throw NotImplementedException("VMNMX SAT"); + } + // Selectors were shown to default to 2 in unit tests + if (vmnmx.src_a_selector != 2) { + throw NotImplementedException("VMNMX Selector {}", vmnmx.src_a_selector.Value()); + } + if (vmnmx.src_b_selector != 2) { + throw NotImplementedException("VMNMX Selector {}", vmnmx.src_b_selector.Value()); + } + if (vmnmx.src_a_width != VideoWidth::Word) { + throw NotImplementedException("VMNMX Source Width {}", vmnmx.src_a_width.Value()); + } + + const bool is_b_imm{vmnmx.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>(vmnmx.src_b_imm)) : GetReg20(insn)}; + const IR::U32 src_c{GetReg39(insn)}; + + const VideoWidth a_width{vmnmx.src_a_width}; + const VideoWidth b_width{GetVideoSourceWidth(vmnmx.src_b_width, is_b_imm)}; + + const bool src_a_signed{vmnmx.src_a_sign != 0}; + const bool src_b_signed{vmnmx.src_b_sign != 0}; + const IR::U32 op_a{ExtractVideoOperandValue(ir, src_a, a_width, 0, src_a_signed)}; + const IR::U32 op_b{ExtractVideoOperandValue(ir, src_b, b_width, 0, src_b_signed)}; + + // First operation's sign is only dependent on operand b's sign + const bool op_1_signed{src_b_signed}; + + const IR::U32 lhs{vmnmx.mx != 0 ? ir.IMax(op_a, op_b, op_1_signed) + : ir.IMin(op_a, op_b, op_1_signed)}; + X(vmnmx.dest_reg, ApplyVideoMinMaxOp(ir, lhs, src_c, vmnmx.op, vmnmx.dest_sign != 0)); +} + +} // namespace Shader::Maxwell |