[memory, vk] TEST: Tiled GPU optimization try #1

src/common/settings_enums.h

@@ -152,6 +152,16 @@ ENUM(SpirvOptimizeMode, Never, OnLoad, Always);
 ENUM(GpuOverclock, Low, Medium, High)
 ENUM(TemperatureUnits, Celsius, Fahrenheit)
 
+// Shader Float Controls behavior modes
+// These control how floating-point denormals and special values are handled in shaders
+ENUM(ShaderFloatBehavior, 
+     DriverDefault,        // Let driver choose (safest, may not match Switch behavior)
+     SwitchNative,         // Emulate Switch/Maxwell behavior (FTZ + RTE + SignedZero)
+     FlushToZero,          // FTZ only - flush denorms to zero (fastest, some precision loss)
+     PreserveDenorms,      // Preserve denorms (slowest, highest precision)
+     RoundToEven,          // RTE rounding mode (IEEE 754 compliant)
+     SignedZeroInfNan);    // Preserve signed zero, inf, nan (accuracy for edge cases)
+
 template <typename Type>
 inline std::string_view CanonicalizeEnum(Type id) {
     const auto group = EnumMetadata<Type>::Canonicalizations();