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emit_spirv: Workaround VK_KHR_shader_float_controls on fp16 Nvidia

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Fix regression on Fire Emblem: Three Houses when using native fp16.
This commit is contained in:
ReinUsesLisp 2021-06-29 18:42:17 -03:00 • committed by ameerj
parent 1b27a2b597
commit 8722668b3c
4 changed files with 12 additions and 5 deletions
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13
src/shader_recompiler/backend/spirv/emit_spirv.cpp
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@ -319,7 +319,7 @@ void SetupDenormControl(const Profile& profile, const IR::Program& program, Emit
Id main_func) {
const Info& info{program.info};
if (info.uses_fp32_denorms_flush && info.uses_fp32_denorms_preserve) {
LOG_WARNING(Shader_SPIRV, "Fp32 denorm flush and preserve on the same shader");
LOG_DEBUG(Shader_SPIRV, "Fp32 denorm flush and preserve on the same shader");
} else if (info.uses_fp32_denorms_flush) {
if (profile.support_fp32_denorm_flush) {
ctx.AddCapability(spv::Capability::DenormFlushToZero);
@ -332,15 +332,15 @@ void SetupDenormControl(const Profile& profile, const IR::Program& program, Emit
ctx.AddCapability(spv::Capability::DenormPreserve);
ctx.AddExecutionMode(main_func, spv::ExecutionMode::DenormPreserve, 32U);
} else {
LOG_WARNING(Shader_SPIRV, "Fp32 denorm preserve used in shader without host support");
LOG_DEBUG(Shader_SPIRV, "Fp32 denorm preserve used in shader without host support");
}
}
if (!profile.support_separate_denorm_behavior) {
if (!profile.support_separate_denorm_behavior || profile.has_broken_fp16_float_controls) {
// No separate denorm behavior
return;
}
if (info.uses_fp16_denorms_flush && info.uses_fp16_denorms_preserve) {
LOG_WARNING(Shader_SPIRV, "Fp16 denorm flush and preserve on the same shader");
LOG_DEBUG(Shader_SPIRV, "Fp16 denorm flush and preserve on the same shader");
} else if (info.uses_fp16_denorms_flush) {
if (profile.support_fp16_denorm_flush) {
ctx.AddCapability(spv::Capability::DenormFlushToZero);
@ -353,13 +353,16 @@ void SetupDenormControl(const Profile& profile, const IR::Program& program, Emit
ctx.AddCapability(spv::Capability::DenormPreserve);
ctx.AddExecutionMode(main_func, spv::ExecutionMode::DenormPreserve, 16U);
} else {
LOG_WARNING(Shader_SPIRV, "Fp16 denorm preserve used in shader without host support");
LOG_DEBUG(Shader_SPIRV, "Fp16 denorm preserve used in shader without host support");
}
}
}
void SetupSignedNanCapabilities(const Profile& profile, const IR::Program& program,
EmitContext& ctx, Id main_func) {
if (profile.has_broken_fp16_float_controls && program.info.uses_fp16) {
return;
}
if (program.info.uses_fp16 && profile.support_fp16_signed_zero_nan_preserve) {
ctx.AddCapability(spv::Capability::SignedZeroInfNanPreserve);
ctx.AddExecutionMode(main_func, spv::ExecutionMode::SignedZeroInfNanPreserve, 16U);