Integrating AMD FidelityFX™ Super Resolution 2 (FSR 2) into Unity URP

AMD FidelityFX Super Resolution 2 (FSR2) is an open source, high-quality solution for producing high resolution frames from lower resolution inputs. FSR2 uses temporal feedback to reconstruct high-resolution images while maintaining and even improving image quality compared to native rendering.

FSR2 can enable “practical performance” for costly render operations, such as hardware ray tracing.

Version

While this patch targets URP 12.1.7 in particular, you can still use this patch for other versions (including newer) with a few careful changes. Note that this version of the patch supports DX11 only.

Integration method

1. Apply 0001-Added-FSR2-support-for-URP.patch to your local URP repository.

   • If you can't use git apply <path to patch> directly due to your own modifications, merge this patch into your local code manually.

2. Apply 0001-fsr-2.2-dx11-backend.patch to FidelityFX-FSR2 @v2.2.1.

3. Follow the build instruction from here to compile the FSR 2 API library.

   • For DirectX® 11, you should run GenerateSolutionDX11.bat instead of GenerateSolutions.bat to get the Visual Studio® solution file (.sln).

4. Generate the VisualStudio solution (.sln) file with CMake for the plugin.

   
   • UNITY_PLUGINAPI_INCLUDE_DIR: Unity plugin API include directory.
   • FFX_FSR2_API_INCLUDE_DIR: FSR 2 API include directory.
   • FFX_FSR2_LIB_DIR: FSR 2 link library directory.
   • FSR2_BACKEND: Set the backend. NOTE! Currently only dx11 is supported.
   • FSR2_UNITY_PLUGIN_DST_DIR: Destination directory for compiled fsr2-unity-plugin[d].dll.

5. Add FSR2Feature into your URP renderer data.

   

6. Choose FidelityFX Super Resolution 2.0 as your Upscaling Filter and turn off MSAA.

   

7. Add FSR2PassControl to GameObject where it has a camera, and you want use FSR 2 to upscale the output of that camera.

   
   • Disable all the anti-aliasing methods applied to this camera.
   • Disable any post effects, e.g. Panini Projection, that cannot be used on the same camera with FSR 2. Try to use multi-cameras and put the effect on a different camera.
   • If you want FSR 2 to automatically generate reactive mask for you, you should make sure Output Reactive Mask is checked. Otherwise, you should provide your own masks with ReactiveMaskParameter.OptReactiveMaskTex and ReactiveMaskParameter.OptTransparencyAndCompositionTex.

To find out more about FSR 2, please visit our FidelityFX FSR 2 page on GPUOpen.

This plugin is developed by AMD and is distributed subject to the MIT license. For more information about the plugin, FSR, or if you have any support questions, please visit GPUOpen.