spirv: Add SignedZeroInfNanPreserve logic

2 files changed, 8 insertions, 0 deletions

diff --git a/src/shader_recompiler/backend/spirv/emit_spirv.cpp b/src/shader_recompiler/backend/spirv/emit_spirv.cpp
index a94e9cb2d..c7cba6279 100644
--- a/src/shader_recompiler/backend/spirv/emit_spirv.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_spirv.cpp
@@ -124,6 +124,12 @@ void SetupDenormControl(const Profile& profile, const IR::Program& program, Emit
     }
     ctx.AddExtension("SPV_KHR_float_controls");
 
+    if (info.uses_fp16 && profile.support_fp16_signed_zero_nan_preserve) {
+        ctx.AddExecutionMode(main_func, spv::ExecutionMode::SignedZeroInfNanPreserve);
+    }
+    if (profile.support_fp32_signed_zero_nan_preserve) {
+        ctx.AddExecutionMode(main_func, spv::ExecutionMode::SignedZeroInfNanPreserve);
+    }
     if (info.uses_fp32_denorms_flush && info.uses_fp32_denorms_preserve) {
         // LOG_ERROR(HW_GPU, "Fp32 denorm flush and preserve on the same shader");
     } else if (info.uses_fp32_denorms_flush) {
diff --git a/src/shader_recompiler/profile.h b/src/shader_recompiler/profile.h
index 917fc1251..c6a143598 100644
--- a/src/shader_recompiler/profile.h
+++ b/src/shader_recompiler/profile.h
@@ -15,6 +15,8 @@ struct Profile {
     bool support_fp32_denorm_preserve{};
     bool support_fp16_denorm_flush{};
     bool support_fp32_denorm_flush{};
+    bool support_fp16_signed_zero_nan_preserve{};
+    bool support_fp32_signed_zero_nan_preserve{};
 
     // FClamp is broken and OpFMax + OpFMin should be used instead
     bool has_broken_spirv_clamp{};