Resolved Custom forward render pass shader has strange lighting issues

I have created a custom render pass to draw a quad and render using an amplify shader editor created shader. I describe my process in more detail in this thread: https://forum.unity.com/threads/cor...e-depth-offset-for-a-full-screen-quad.967018/

Everything works as expected except for a strange issue with lighting. Every light in the scene appears to have some sort of billboard. I know it probably isnt a billboard but it behaves exactly like a billboard would. The shader does call light loop and it is a forward pass. I didnt write the forward pass, it generated by amplify shader editor. You can see in the video if I maneuver around the point where the light is the artifact rotates with me. Does anyone have any idea what this is or what causes this? Maybe point me in a direction that I can investigate to solve it? Thanks.

Video:

 

Here is another video with a blank texture that might help show the issue more clearly. The white texture is the shader, I toggle it on and off at some point in the video.

 

I started to rewrite the shader by hand instead of using amplify shader editor to see if I could solve this. I was trying to get away with too much with the shader editor + custom render pass, I knew this but I wanted to see if I could. Turns out doing it by hand was better for this situation. I ended up solving this by decoding the gbuffer to retrieve the BSDFData data.

Code (CSharp):

1.  
2. BSDFData bsdfData;
3. BuiltinData builtinData;
4. DECODE_FROM_GBUFFER(posInput.positionSS, UINT_MAX, bsdfData, builtinData);
5. //color is the color from the triplanar map I set up earlier in the shader
6. bsdfData.diffuseColor = color;

After running this through the lightloop and drawing the diffuse I was still getting the billboard effect. I starting digging around in Lit.hlsl and more specifically LightLoopDef.hlsl and came across

LIGHTLOOP_DISABLE_TILE_AND_CLUSTER

. I decided to define it and it worked.


I tried adding it to the amplify shader generated code and it didnt work, so it looks like I am going manual from here. At least the billboard effect is gone. At this point I dont have to apply a depth offset or any of the things I was trying to do with the amplify shader since this is just outputing color in a fullscreen image effect. Probably should have just done it this way from the start. Oh well.