From dbc1e5cde79b9165605741e1ea7158513ef6499f Mon Sep 17 00:00:00 2001 From: ameerj <52414509+ameerj@users.noreply.github.com> Date: Sat, 27 Mar 2021 23:01:28 -0400 Subject: shader: Implement I2I SAT --- src/shader_recompiler/frontend/ir/ir_emitter.cpp | 8 +++++ src/shader_recompiler/frontend/ir/ir_emitter.h | 2 ++ src/shader_recompiler/frontend/ir/opcodes.inc | 2 ++ .../impl/integer_to_integer_conversion.cpp | 40 ++++++++++++++++------ 4 files changed, 42 insertions(+), 10 deletions(-) (limited to 'src/shader_recompiler/frontend') diff --git a/src/shader_recompiler/frontend/ir/ir_emitter.cpp b/src/shader_recompiler/frontend/ir/ir_emitter.cpp index d6a1d8ec2..9b898e4e1 100644 --- a/src/shader_recompiler/frontend/ir/ir_emitter.cpp +++ b/src/shader_recompiler/frontend/ir/ir_emitter.cpp @@ -1183,6 +1183,14 @@ U32 IREmitter::IMax(const U32& a, const U32& b, bool is_signed) { return is_signed ? SMax(a, b) : UMax(a, b); } +U32 IREmitter::SClamp(const U32& value, const U32& min, const U32& max) { + return Inst(Opcode::SClamp32, value, min, max); +} + +U32 IREmitter::UClamp(const U32& value, const U32& min, const U32& max) { + return Inst(Opcode::UClamp32, value, min, max); +} + U1 IREmitter::ILessThan(const U32& lhs, const U32& rhs, bool is_signed) { return Inst(is_signed ? Opcode::SLessThan : Opcode::ULessThan, lhs, rhs); } diff --git a/src/shader_recompiler/frontend/ir/ir_emitter.h b/src/shader_recompiler/frontend/ir/ir_emitter.h index 842c2bdaf..269f367a4 100644 --- a/src/shader_recompiler/frontend/ir/ir_emitter.h +++ b/src/shader_recompiler/frontend/ir/ir_emitter.h @@ -206,6 +206,8 @@ public: [[nodiscard]] U32 SMax(const U32& a, const U32& b); [[nodiscard]] U32 UMax(const U32& a, const U32& b); [[nodiscard]] U32 IMax(const U32& a, const U32& b, bool is_signed); + [[nodiscard]] U32 SClamp(const U32& value, const U32& min, const U32& max); + [[nodiscard]] U32 UClamp(const U32& value, const U32& min, const U32& max); [[nodiscard]] U1 ILessThan(const U32& lhs, const U32& rhs, bool is_signed); [[nodiscard]] U1 IEqual(const U32U64& lhs, const U32U64& rhs); diff --git a/src/shader_recompiler/frontend/ir/opcodes.inc b/src/shader_recompiler/frontend/ir/opcodes.inc index c75658328..9b050995b 100644 --- a/src/shader_recompiler/frontend/ir/opcodes.inc +++ b/src/shader_recompiler/frontend/ir/opcodes.inc @@ -299,6 +299,8 @@ OPCODE(SMin32, U32, U32, OPCODE(UMin32, U32, U32, U32, ) OPCODE(SMax32, U32, U32, U32, ) OPCODE(UMax32, U32, U32, U32, ) +OPCODE(SClamp32, U32, U32, U32, U32, ) +OPCODE(UClamp32, U32, U32, U32, U32, ) OPCODE(SLessThan, U1, U32, U32, ) OPCODE(ULessThan, U1, U32, U32, ) OPCODE(IEqual, U1, U32, U32, ) diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/integer_to_integer_conversion.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/integer_to_integer_conversion.cpp index e8f35552c..98b7f59f7 100644 --- a/src/shader_recompiler/frontend/maxwell/translate/impl/integer_to_integer_conversion.cpp +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/integer_to_integer_conversion.cpp @@ -30,16 +30,33 @@ enum class IntegerWidth : u64 { [[nodiscard]] IR::U32 ConvertInteger(IR::IREmitter& ir, const IR::U32& src, IntegerWidth dst_width) { const IR::U32 zero{ir.Imm32(0)}; + const IR::U32 count{WidthSize(ir, dst_width)}; + return ir.BitFieldExtract(src, zero, count, false); +} + +[[nodiscard]] IR::U32 SaturateInteger(IR::IREmitter& ir, const IR::U32& src, IntegerWidth dst_width, + bool dst_signed, bool src_signed) { + IR::U32 min{}; + IR::U32 max{}; + const IR::U32 zero{ir.Imm32(0)}; switch (dst_width) { case IntegerWidth::Byte: - return ir.BitFieldExtract(src, zero, ir.Imm32(8), false); + min = dst_signed && src_signed ? ir.Imm32(0xffffff80) : zero; + max = dst_signed ? ir.Imm32(0x7f) : ir.Imm32(0xff); + break; case IntegerWidth::Short: - return ir.BitFieldExtract(src, zero, ir.Imm32(16), false); + min = dst_signed && src_signed ? ir.Imm32(0xffff8000) : zero; + max = dst_signed ? ir.Imm32(0x7fff) : ir.Imm32(0xffff); + break; case IntegerWidth::Word: - return ir.BitFieldExtract(src, zero, ir.Imm32(32), false); + min = dst_signed && src_signed ? ir.Imm32(0x80000000) : zero; + max = dst_signed ? ir.Imm32(0x7fffffff) : ir.Imm32(0xffffffff); + break; default: throw NotImplementedException("Invalid width {}", dst_width); } + const IR::U32 value{!dst_signed && src_signed ? ir.SMax(zero, src) : src}; + return dst_signed && src_signed ? ir.SClamp(value, min, max) : ir.UClamp(value, min, max); } void I2I(TranslatorVisitor& v, u64 insn, const IR::U32& src_a) { @@ -60,9 +77,6 @@ void I2I(TranslatorVisitor& v, u64 insn, const IR::U32& src_a) { if (i2i.cc != 0) { throw NotImplementedException("I2I CC"); } - if (i2i.sat != 0) { - throw NotImplementedException("I2I SAT"); - } if (i2i.src_fmt == IntegerWidth::Short && (i2i.selector == 1 || i2i.selector == 3)) { throw NotImplementedException("16-bit source format incompatible with selector {}", i2i.selector); @@ -75,15 +89,21 @@ void I2I(TranslatorVisitor& v, u64 insn, const IR::U32& src_a) { const s32 selector{static_cast(i2i.selector)}; const IR::U32 offset{v.ir.Imm32(selector * 8)}; const IR::U32 count{WidthSize(v.ir, i2i.src_fmt)}; - IR::U32 src_values{v.ir.BitFieldExtract(src_a, offset, count, i2i.src_fmt_sign != 0)}; - if (i2i.abs) { + const bool src_signed{i2i.src_fmt_sign != 0}; + const bool dst_signed{i2i.dst_fmt_sign != 0}; + const bool sat{i2i.sat != 0}; + + IR::U32 src_values{v.ir.BitFieldExtract(src_a, offset, count, src_signed)}; + if (i2i.abs != 0) { src_values = v.ir.IAbs(src_values); } - if (i2i.neg) { + if (i2i.neg != 0) { src_values = v.ir.INeg(src_values); } + const IR::U32 result{ + sat ? SaturateInteger(v.ir, src_values, i2i.dst_fmt, dst_signed, src_signed) + : ConvertInteger(v.ir, src_values, i2i.dst_fmt)}; - const IR::U32 result{ConvertInteger(v.ir, src_values, i2i.dst_fmt)}; v.X(i2i.dest_reg, result); } } // Anonymous namespace -- cgit v1.2.3