Fall back to biasColorMask if reactiveMask is empty, because Unity can't seem to make up its mind what either of these textures mean.

FSR3UnityPlugin.cpp

@@ -439,6 +439,9 @@ static void UNITY_INTERFACE_API OnRenderEventAndData(int eventID, void* data)
             dispatchDescription.transparencyAndComposition = ffxGetResourceDX11(&feature.fsr2Context, (ID3D11Resource*)feature.textureTable.transparencyMask.image);
             dispatchDescription.output = ffxGetResourceDX11(&feature.fsr2Context, (ID3D11Resource*)feature.textureTable.colorOutput.image, nullptr, FFX_RESOURCE_STATE_UNORDERED_ACCESS);
 
+            if (dispatchDescription.reactive.resource == nullptr)
+                dispatchDescription.reactive = ffxGetResourceDX11(&feature.fsr2Context, (ID3D11Resource*)feature.textureTable.biasColorMask.image);
+
             dispatchDescription.jitterOffset.x = params->jitterOffsetX;
             dispatchDescription.jitterOffset.y = params->jitterOffsetY;
             dispatchDescription.motionVectorScale.x = params->MVScaleX;
@@ -486,6 +489,9 @@ static void UNITY_INTERFACE_API OnRenderEventAndData(int eventID, void* data)
             dispatchUpscale.reactive = ffxApiGetResourceDX12((ID3D12Resource*)feature.textureTable.reactiveMask.image, FFX_API_RESOURCE_STATE_PIXEL_COMPUTE_READ);
             dispatchUpscale.transparencyAndComposition = ffxApiGetResourceDX12((ID3D12Resource*)feature.textureTable.transparencyMask.image, FFX_API_RESOURCE_STATE_PIXEL_COMPUTE_READ);
             dispatchUpscale.output = ffxApiGetResourceDX12((ID3D12Resource*)feature.textureTable.colorOutput.image, FFX_API_RESOURCE_STATE_UNORDERED_ACCESS);
+
+            if (dispatchUpscale.reactive.resource == nullptr)
+                dispatchUpscale.reactive = ffxApiGetResourceDX12((ID3D12Resource*)feature.textureTable.biasColorMask.image, FFX_API_RESOURCE_STATE_PIXEL_COMPUTE_READ);
         }
         else if (s_GraphicsVulkan != nullptr)
         {
@@ -504,6 +510,9 @@ static void UNITY_INTERFACE_API OnRenderEventAndData(int eventID, void* data)
             dispatchUpscale.reactive = GetVulkanTextureResource(instance, feature.textureTable.reactiveMask);
             dispatchUpscale.transparencyAndComposition = GetVulkanTextureResource(instance, feature.textureTable.transparencyMask);
             dispatchUpscale.output = GetVulkanTextureResource(instance, feature.textureTable.colorOutput, FFX_API_RESOURCE_STATE_UNORDERED_ACCESS);
+
+            if (dispatchUpscale.reactive.resource == nullptr)
+                dispatchUpscale.reactive = GetVulkanTextureResource(instance, feature.textureTable.biasColorMask);
         }
 
         dispatchUpscale.jitterOffset.x = params->jitterOffsetX;