raphiaura/KytyPS5
1
0
Fork 0
mirror of https://github.com/KytyPS5/KytyPS5.git synced 2026-10-20 02:47:02 +02:00
Code Issues Packages Projects Releases Wiki Activity

shader: classify float NaNs with one magnitude comparison

Browse Source
This commit is contained in:
nmzik
2026-10-09 02:49:00 +02:00
parent 13e3ca314c
commit 393257eaae
1 changed files with 4 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/graphics/shader/recompiler/backend/spirv/spirvEmitterAluHelpers.cpp
+4 -9
View File
@@ -84,15 +84,10 @@ uint32_t EmitF32ToF16RtzBits(EmitterState& state, uint32_t f32) {
F32Class EmitClassifyF32Bits(EmitterState& state, uint32_t bits) {
F32Class cls;
cls.bits = bits;
const auto abs_bits = EmitAndConstant(state, cls.bits, 0x7fffffffu);
const auto exponent_bits = EmitAndConstant(state, abs_bits, 0x7f800000u);
const auto mantissa_bits = EmitAndConstant(state, abs_bits, 0x007fffffu);
const auto exponent_max =
EmitCompareU32Constant(state, spv::OpIEqual, exponent_bits, 0x7f800000u);
const auto mantissa_nonzero = EmitCompareU32Constant(state, spv::OpINotEqual, mantissa_bits, 0);
cls.nan = EmitLogicalAndBool(state, exponent_max, mantissa_nonzero);
cls.zero = EmitCompareU32Constant(state, spv::OpIEqual, abs_bits, 0);
cls.bits = bits;
const auto abs_bits = EmitAndConstant(state, cls.bits, 0x7fffffffu);
cls.nan = EmitCompareU32Constant(state, spv::OpUGreaterThan, abs_bits, 0x7f800000u);
cls.zero = EmitCompareU32Constant(state, spv::OpIEqual, abs_bits, 0);
return cls;
}