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: keep native rounding consistent in mixed-precision programs

Browse Source 
Co-authored-by: Çağatay Güçlü <33038942+defektu@users.noreply.github.com>
This commit is contained in:
nmzik
2026-10-04 04:39:57 +04:00
parent b4d32394b6
commit 7992aecb7c
3 changed files with 90 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/graphics/shader/recompiler/backend/spirv/spirvEmitterModule.cpp
+1 -3
View File
@@ -738,15 +738,13 @@ void DefineModule(EmitterState& state) {
if (state.requirements.float64) {
EXIT_NOT_IMPLEMENTED(state.program.stage == ShaderType::Compute &&
state.input_info.compute->float_mode != 0xc0);
// MODE=0xc0 uses round-to-nearest-even and preserves FP64 input/output denormals.
// Use native rounding for MODE=0xc0, consistent with ordinary FP32 arithmetic.
state.builder.RequireCapability(spv::CapabilityFloat64);
state.builder.RequireCapability(spv::CapabilityRoundingModeRTE);
state.builder.AddExecutionMode(state.main_func, spv::ExecutionModeSignedZeroInfNanPreserve,
64u);
// FP64 denormal preservation is temporarily disabled.
// state.builder.RequireCapability(spv::CapabilityDenormPreserve);
// state.builder.AddExecutionMode(state.main_func, spv::ExecutionModeDenormPreserve, 64u);
state.builder.AddExecutionMode(state.main_func, spv::ExecutionModeRoundingModeRTE, 32u);
}
if (const auto* cs = ShaderWorkgroupInput(state.program.stage, state.input_info)) {
uint32_t local_x = state.requirements.compute_derivatives ? 2u : 1u;