Showcase Community FSR support for the Built-In Renderer

Sorry for a probably-dumb question, but how do you add this new effect to the PPV2 stack? It's not listed when I try to add a new effect (only shows Unity and Psychose, which only has the original FSR effect). (And also, what's your GPU that the water ocean scene is just 3ms!?)

 

hi sorry I should have been clearer. Firstly, a disclaimer: This is strictly a proof-of-concept only, I hope this is correct but it might not be

My hacky strategy to get this working in the PPV2 stack is essentially as follows:
As a base, use AMD_FIDELITY_FX_FSR_ALTERNATIVE as provided by @atomicjoe I then modified this code so that the output rendertexture is available to a new custom PPV2 "effect" which all it does is blit in this rendertexture:

in a new file AUX_FX_FSR_STACK.cs I used the following hacky code:

Code (CSharp):

1. using System;
2. using UnityEngine;
3. using UnityEngine.Rendering.PostProcessing;
4.  
5. namespace AMD_FIDELITY_FX
6. {
7.     [Serializable]
8.     [PostProcess(typeof(AUX_FX_FSR_STACK_Renderer), PostProcessEvent.BeforeStack,
9.         "Psychose Interactive/AMD Fidelity FX/FSR AUX")]
10.     public sealed class AUX_FX_FSR_STACK : PostProcessEffectSettings
11.     {
12.        
13.     }
14.  
15.     public sealed class AUX_FX_FSR_STACK_Renderer : PostProcessEffectRenderer<AUX_FX_FSR_STACK>
16.     {
17.         static public RenderTexture superSampledOutput;
18.  
19.         public override void Render(PostProcessRenderContext context)
20.         {
21.             if (superSampledOutput!=null) {
22.                 context.command.BlitFullscreenTriangle(superSampledOutput, context.destination, false, new Rect(0f, 0f, context.camera.pixelWidth, context.camera.pixelHeight));
23.             }
24.         }
25.     }
26. }

I then tweaked the end of AMD_FIDELITY_FX_FSR_ALTERNATIVE.cs Initialize() to add in:

Code (CSharp):

1. AMD_FIDELITY_FX.AUX_FX_FSR_STACK_Renderer.superSampledOutput = superSampledOutput;

Then, I set up the "real" camera with a PPV2 layer for antialiasing only:



The FidelityFX screen output camera which the AMD_FIDELITY_FX_FSR_ALTERNATIVE.cs creates I then added a layer with normal post-processing settings but no AA, and disabled the AUX_FSR script.

The net effect, as I understand it is as follows:

on the main camera, the AMD_FIDELITY_FX_FSR_ALTERNATIVE.cs script retargets the camera to rendertexture which is smaller than the monitor output, dynamic resolution can work on a rendertexture but not without. PPV2 then runs to perform e.g. SMAA only at this scale. Then AMD_FIDELITY_FX_FSR_ALTERNATIVE.cs runs the fidelity fx to a new, larger rendertexture.

PPV2 runs on the aux camera, and via the hacky PPV2 effect draws the larger rendertexture, then applies whatever PPV2 effect you add in.

Phew!

regards the 3ms time I wouldnt trust that too much. I am on a 1070 mobile, but when I captured the screenshot I had downsampling on the fidelityfx at 2. Therefore for a 4k screen it is only actually rendering at 1080p before upscaling. This is the most severe quality reduction fidelityfx recommends.

I hope this helps, good luck!

 

addendum in case anyone come back to this. My approach outlined above has a reasonably significant flaw. The problem is that the camera depth buffer and motion vectors are not preserved through the upsampling method to the post processing effects running afterwards. This means that post processing effects which depend on these, notably:

depth-of-field
motion blur
screen space reflections
ambient obscurance

will not work correctly. Ideally there would be a way to pass this information through e.g. via the compute shader however at the moment I am not sure how to do this. My plan is to move these effects (where used) to run on the camera prior to upsampling which is not ideal but I think will probably look OK.

 

The PPV2 version only seems to be working in Unity 2021.2 (at least in the version I used) and not in 2020.3. I'll let you guys know if I can make it work in 2020

EDIT: Stupid update: Disregard my message, since Dynamic Resolution only works in DX12 you have to have your project in dx12...

 

I suppose this wouldn't work on Android VR, right?

Well, turns out it works, but it only renders at the lower left corner, lol. Same dynamic resolution bug for HDRP/DLSS

 

I don't suppose anyone figured out a workaround to get this working on Mac/Metal?

 

I don't have a Mac to try but it should work on metal: it's working even on Android OpenGLES3
Is it throwing errors?
Does metal support compute shaders?

 

No errors, just a black screen like the @sameng was seeing. Metal definitely supports compute shaders as I'm using GPU Instancer with no issues.

 

I'm afraid I can't help with that since I don't have a Mac.

 

I suppose asking for a FSR 2.0 version would be too much?

 

It hasn't been open sourced yet.

 

Cool mobile optimization for FSR 1.
https://gist.github.com/atyuwen/78d6e810e6d0f7fd4aa6207d416f2eeb

article: https://atyuwen.github.io/posts/optimizing-fsr/

 

https://github.com/GPUOpen-Effects/FidelityFX-FSR2

I believe it has been open sourced now!

 

Amazing work! Would it be hard to add single pass VR support on shaders?

 

I am a noob looking to increase fps in builtin renderer can someone explain me how to use FSR to get more fps in editor ?

 

Our FSR 2 asset in the unity store is fully documented with detailed explanation!

 

There is also a FREE VERSION on GitHub here:
https://github.com/ndepoel/FSR2Unity

 

But it doesn't work on URP and HDRP!

 

That's not a bug, it's a FEATURE!

 

Well personally I think my version is better I'm constantly improving it's usability. Its not free, but I'm giving almost real-time support for it.

I'm also updating my FSR 2 asset with a fallback FSR 1 option for BIRP (free update). Which will also inject FSR 1 the way it's supposed too.

@sameng I did find out why this asset isn't working for Metal on MacOS and fixed it, so if you're still looking for FSR 1, it'll be included in my FSR 2 asset soon!

https://assetstore.unity.com/packages/tools/utilities/fsr-2-upscaling-for-unity-252172

FSR 1 Performance 1920x1080 running @ 960x540 not as good as FSR 2, but still quite good and much cheaper on the GPU (also for mobiles!):