diff options
Diffstat (limited to 'src/shader_recompiler/frontend/maxwell')
4 files changed, 191 insertions, 20 deletions
diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/half_floating_point_fused_multiply_add.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/half_floating_point_fused_multiply_add.cpp new file mode 100644 index 000000000..2f3996274 --- /dev/null +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/half_floating_point_fused_multiply_add.cpp @@ -0,0 +1,170 @@ +// Copyright 2021 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include "shader_recompiler/frontend/maxwell/translate/impl/half_floating_point_helper.h" + +namespace Shader::Maxwell { +namespace { + +void HFMA2(TranslatorVisitor& v, u64 insn, Merge merge, Swizzle swizzle_a, bool neg_b, bool neg_c, + Swizzle swizzle_b, Swizzle swizzle_c, const IR::U32& src_b, const IR::U32& src_c, + bool sat, HalfPrecision precision) { + union { + u64 raw; + BitField<0, 8, IR::Reg> dest_reg; + BitField<8, 8, IR::Reg> src_a; + } const hfma2{insn}; + + auto [lhs_a, rhs_a]{Extract(v.ir, v.X(hfma2.src_a), swizzle_a)}; + auto [lhs_b, rhs_b]{Extract(v.ir, src_b, swizzle_b)}; + auto [lhs_c, rhs_c]{Extract(v.ir, src_c, swizzle_c)}; + const bool promotion{lhs_a.Type() != lhs_b.Type() || lhs_a.Type() != lhs_c.Type()}; + if (promotion) { + if (lhs_a.Type() == IR::Type::F16) { + lhs_a = v.ir.FPConvert(32, lhs_a); + rhs_a = v.ir.FPConvert(32, rhs_a); + } + if (lhs_b.Type() == IR::Type::F16) { + lhs_b = v.ir.FPConvert(32, lhs_b); + rhs_b = v.ir.FPConvert(32, rhs_b); + } + if (lhs_c.Type() == IR::Type::F16) { + lhs_c = v.ir.FPConvert(32, lhs_c); + rhs_c = v.ir.FPConvert(32, rhs_c); + } + } + + lhs_b = v.ir.FPAbsNeg(lhs_b, false, neg_b); + rhs_b = v.ir.FPAbsNeg(rhs_b, false, neg_b); + + lhs_c = v.ir.FPAbsNeg(lhs_c, false, neg_c); + rhs_c = v.ir.FPAbsNeg(rhs_c, false, neg_c); + + const IR::FpControl fp_control{ + .no_contraction{true}, + .rounding{IR::FpRounding::DontCare}, + .fmz_mode{HalfPrecision2FmzMode(precision)}, + }; + IR::F16F32F64 lhs{v.ir.FPFma(lhs_a, lhs_b, lhs_c, fp_control)}; + IR::F16F32F64 rhs{v.ir.FPFma(rhs_a, rhs_b, rhs_c, fp_control)}; + if (precision == HalfPrecision::FMZ && !sat) { + // Do not implement FMZ if SAT is enabled, as it does the logic for us. + // On D3D9 mode, anything * 0 is zero, even NAN and infinity + const IR::F32 zero{v.ir.Imm32(0.0f)}; + const IR::U1 lhs_zero_a{v.ir.FPEqual(lhs_a, zero)}; + const IR::U1 lhs_zero_b{v.ir.FPEqual(lhs_b, zero)}; + const IR::U1 lhs_any_zero{v.ir.LogicalOr(lhs_zero_a, lhs_zero_b)}; + lhs = IR::F16F32F64{v.ir.Select(lhs_any_zero, lhs_c, lhs)}; + + const IR::U1 rhs_zero_a{v.ir.FPEqual(rhs_a, zero)}; + const IR::U1 rhs_zero_b{v.ir.FPEqual(rhs_b, zero)}; + const IR::U1 rhs_any_zero{v.ir.LogicalOr(rhs_zero_a, rhs_zero_b)}; + rhs = IR::F16F32F64{v.ir.Select(rhs_any_zero, rhs_c, rhs)}; + } + if (sat) { + lhs = v.ir.FPSaturate(lhs); + rhs = v.ir.FPSaturate(rhs); + } + if (promotion) { + lhs = v.ir.FPConvert(16, lhs); + rhs = v.ir.FPConvert(16, rhs); + } + v.X(hfma2.dest_reg, MergeResult(v.ir, hfma2.dest_reg, lhs, rhs, merge)); +} + +void HFMA2(TranslatorVisitor& v, u64 insn, bool neg_b, bool neg_c, Swizzle swizzle_b, + Swizzle swizzle_c, const IR::U32& src_b, const IR::U32& src_c, bool sat, + HalfPrecision precision) { + union { + u64 raw; + BitField<47, 2, Swizzle> swizzle_a; + BitField<49, 2, Merge> merge; + } const hfma2{insn}; + + HFMA2(v, insn, hfma2.merge, hfma2.swizzle_a, neg_b, neg_c, swizzle_b, swizzle_c, src_b, src_c, + sat, precision); +} + +} // namespace + +void TranslatorVisitor::HFMA2_reg(u64 insn) { + union { + u64 raw; + BitField<28, 2, Swizzle> swizzle_b; + BitField<32, 1, u64> saturate; + BitField<31, 1, u64> neg_b; + BitField<30, 1, u64> neg_c; + BitField<35, 2, Swizzle> swizzle_c; + BitField<37, 2, HalfPrecision> precision; + } const hfma2{insn}; + + HFMA2(*this, insn, hfma2.neg_b != 0, hfma2.neg_c != 0, hfma2.swizzle_b, hfma2.swizzle_c, + GetReg20(insn), GetReg39(insn), hfma2.saturate != 0, hfma2.precision); +} + +void TranslatorVisitor::HFMA2_rc(u64 insn) { + union { + u64 raw; + BitField<51, 1, u64> neg_c; + BitField<52, 1, u64> saturate; + BitField<53, 2, Swizzle> swizzle_b; + BitField<56, 1, u64> neg_b; + BitField<57, 2, HalfPrecision> precision; + } const hfma2{insn}; + + HFMA2(*this, insn, hfma2.neg_b != 0, hfma2.neg_c != 0, hfma2.swizzle_b, Swizzle::F32, + GetReg39(insn), GetCbuf(insn), hfma2.saturate != 0, hfma2.precision); +} + +void TranslatorVisitor::HFMA2_cr(u64 insn) { + union { + u64 raw; + BitField<51, 1, u64> neg_c; + BitField<52, 1, u64> saturate; + BitField<53, 2, Swizzle> swizzle_c; + BitField<56, 1, u64> neg_b; + BitField<57, 2, HalfPrecision> precision; + } const hfma2{insn}; + + HFMA2(*this, insn, hfma2.neg_b != 0, hfma2.neg_c != 0, Swizzle::F32, hfma2.swizzle_c, + GetCbuf(insn), GetReg39(insn), hfma2.saturate != 0, hfma2.precision); +} + +void TranslatorVisitor::HFMA2_imm(u64 insn) { + union { + u64 raw; + BitField<51, 1, u64> neg_c; + BitField<52, 1, u64> saturate; + BitField<53, 2, Swizzle> swizzle_c; + + BitField<56, 1, u64> neg_high; + BitField<30, 9, u64> high; + BitField<29, 1, u64> neg_low; + BitField<20, 9, u64> low; + BitField<57, 2, HalfPrecision> precision; + } const hfma2{insn}; + + const u32 imm{static_cast<u32>(hfma2.low << 6) | ((hfma2.neg_low != 0 ? 1 : 0) << 15) | + static_cast<u32>(hfma2.high << 22) | ((hfma2.neg_high != 0 ? 1 : 0) << 31)}; + + HFMA2(*this, insn, false, hfma2.neg_c != 0, Swizzle::H1_H0, hfma2.swizzle_c, ir.Imm32(imm), + GetReg39(insn), hfma2.saturate != 0, hfma2.precision); +} + +void TranslatorVisitor::HFMA2_32I(u64 insn) { + union { + u64 raw; + BitField<0, 8, IR::Reg> src_c; + BitField<20, 32, u64> imm32; + BitField<52, 1, u64> neg_c; + BitField<53, 2, Swizzle> swizzle_a; + BitField<55, 2, HalfPrecision> precision; + } const hfma2{insn}; + + const u32 imm{static_cast<u32>(hfma2.imm32)}; + HFMA2(*this, insn, Merge::H1_H0, hfma2.swizzle_a, false, hfma2.neg_c != 0, Swizzle::H1_H0, + Swizzle::H1_H0, ir.Imm32(imm), X(hfma2.src_c), false, hfma2.precision); +} + +} // namespace Shader::Maxwell diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/half_floating_point_helper.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/half_floating_point_helper.cpp index 930822092..d0c6ba1aa 100644 --- a/src/shader_recompiler/frontend/maxwell/translate/impl/half_floating_point_helper.cpp +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/half_floating_point_helper.cpp @@ -6,6 +6,19 @@ namespace Shader::Maxwell { +IR::FmzMode HalfPrecision2FmzMode(HalfPrecision precision) { + switch (precision) { + case HalfPrecision::None: + return IR::FmzMode::None; + case HalfPrecision::FTZ: + return IR::FmzMode::FTZ; + case HalfPrecision::FMZ: + return IR::FmzMode::FMZ; + default: + return IR::FmzMode::DontCare; + } +} + std::pair<IR::F16F32F64, IR::F16F32F64> Extract(IR::IREmitter& ir, IR::U32 value, Swizzle swizzle) { switch (swizzle) { case Swizzle::H1_H0: { diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/half_floating_point_helper.h b/src/shader_recompiler/frontend/maxwell/translate/impl/half_floating_point_helper.h index 0933b595e..f26ef0949 100644 --- a/src/shader_recompiler/frontend/maxwell/translate/impl/half_floating_point_helper.h +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/half_floating_point_helper.h @@ -23,6 +23,14 @@ enum class Swizzle : u64 { H1_H1, }; +enum class HalfPrecision : u64 { + None = 0, + FTZ = 1, + FMZ = 2, +}; + +IR::FmzMode HalfPrecision2FmzMode(HalfPrecision precision); + std::pair<IR::F16F32F64, IR::F16F32F64> Extract(IR::IREmitter& ir, IR::U32 value, Swizzle swizzle); IR::U32 MergeResult(IR::IREmitter& ir, IR::Reg dest, const IR::F16& lhs, const IR::F16& rhs, 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 4078feafa..ddfca8d7a 100644 --- a/src/shader_recompiler/frontend/maxwell/translate/impl/not_implemented.cpp +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/not_implemented.cpp @@ -181,26 +181,6 @@ void TranslatorVisitor::GETLMEMBASE(u64) { ThrowNotImplemented(Opcode::GETLMEMBASE); } -void TranslatorVisitor::HFMA2_reg(u64) { - ThrowNotImplemented(Opcode::HFMA2_reg); -} - -void TranslatorVisitor::HFMA2_rc(u64) { - ThrowNotImplemented(Opcode::HFMA2_rc); -} - -void TranslatorVisitor::HFMA2_cr(u64) { - ThrowNotImplemented(Opcode::HFMA2_cr); -} - -void TranslatorVisitor::HFMA2_imm(u64) { - ThrowNotImplemented(Opcode::HFMA2_imm); -} - -void TranslatorVisitor::HFMA2_32I(u64) { - ThrowNotImplemented(Opcode::HFMA2_32I); -} - void TranslatorVisitor::HMUL2_reg(u64) { ThrowNotImplemented(Opcode::HMUL2_reg); } |