diff --git a/Assets/Scripts/Core/Fsr3UpscalerPass.cs b/Assets/Scripts/Core/Fsr3UpscalerPass.cs
index 4576331..3b374fb 100644
--- a/Assets/Scripts/Core/Fsr3UpscalerPass.cs
+++ b/Assets/Scripts/Core/Fsr3UpscalerPass.cs
@@ -33,8 +33,6 @@ namespace FidelityFX
     /// </summary>
     internal abstract class Fsr3UpscalerPass: IDisposable
     {
-        internal const int ShadingChangeMipLevel = 4;   // This matches the FFX_FSR3UPSCALER_SHADING_CHANGE_MIP_LEVEL define
-
         protected readonly Fsr3Upscaler.ContextDescription ContextDescription;
         protected readonly Fsr3UpscalerResources Resources;
         protected readonly ComputeBuffer Constants;
diff --git a/Assets/Shaders/FSR3/ffx_fsr3upscaler_prepare_inputs_pass.compute b/Assets/Shaders/FSR3/ffx_fsr3upscaler_prepare_inputs_pass.compute
index 779e763..8174640 100644
--- a/Assets/Shaders/FSR3/ffx_fsr3upscaler_prepare_inputs_pass.compute
+++ b/Assets/Shaders/FSR3/ffx_fsr3upscaler_prepare_inputs_pass.compute
@@ -20,6 +20,7 @@
 
 #pragma kernel CS
 
+// TODO: figure out which of these defines are actually used by this shader (for all shader passes)
 #pragma multi_compile_local __ FFX_HALF
 #pragma multi_compile_local __ FFX_FSR3UPSCALER_OPTION_REPROJECT_USE_LANCZOS_TYPE
 #pragma multi_compile_local __ FFX_FSR3UPSCALER_OPTION_HDR_COLOR_INPUT