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| author | ReinUsesLisp <reinuseslisp@airmail.cc> | 2021-02-22 03:42:38 +0100 |
|---|---|---|
| committer | ameerj <52414509+ameerj@users.noreply.github.com> | 2021-07-23 03:51:22 +0200 |
| commit | 274897dfd59b4d08029ab7e93be4f84654abcdc8 (patch) | |
| tree | 083336a4d665476a87b888368878a311a7edab2a /src/shader_recompiler/frontend/maxwell/translate/impl/impl.cpp | |
| parent | shader: Rename, implement FADD.SAT and P2R (imm) (diff) | |
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Diffstat (limited to 'src/shader_recompiler/frontend/maxwell/translate/impl/impl.cpp')
| -rw-r--r-- | src/shader_recompiler/frontend/maxwell/translate/impl/impl.cpp | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/impl.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/impl.cpp index be17bb0d9..165d475b9 100644 --- a/src/shader_recompiler/frontend/maxwell/translate/impl/impl.cpp +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/impl.cpp @@ -83,9 +83,12 @@ IR::U32 TranslatorVisitor::GetImm20(u64 insn) { BitField<20, 19, u64> value; BitField<56, 1, u64> is_negative; } const imm{insn}; - const s32 positive_value{static_cast<s32>(imm.value)}; - const s32 value{imm.is_negative != 0 ? -positive_value : positive_value}; - return ir.Imm32(value); + if (imm.is_negative != 0) { + const s64 raw{static_cast<s64>(imm.value)}; + return ir.Imm32(static_cast<s32>(-(1LL << 19) + raw)); + } else { + return ir.Imm32(static_cast<u32>(imm.value)); + } } IR::F32 TranslatorVisitor::GetFloatImm20(u64 insn) { @@ -94,9 +97,9 @@ IR::F32 TranslatorVisitor::GetFloatImm20(u64 insn) { BitField<20, 19, u64> value; BitField<56, 1, u64> is_negative; } const imm{insn}; - const f32 positive_value{Common::BitCast<f32>(static_cast<u32>(imm.value) << 12)}; - const f32 value{imm.is_negative != 0 ? -positive_value : positive_value}; - return ir.Imm32(value); + const u32 sign_bit{imm.is_negative != 0 ? (1ULL << 31) : 0}; + const u32 value{static_cast<u32>(imm.value) << 12}; + return ir.Imm32(Common::BitCast<f32>(value | sign_bit)); } IR::U32 TranslatorVisitor::GetImm32(u64 insn) { |