Unity SSR Solution for URP

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Github: JoshuaLim007/Unity-ScreenSpaceReflections-URP: SSR solution for Unity URP (github.com)

I finished a screen space reflection shader a little while ago and thought I should share it on the Unity Forums. It works on Unity URP 12 and newer. So, Unity 2021 LTS and above. It runs reasonably well around 2 ms for both the Hi-Z buffer generation and the multi-pass reflection shader on a rtx 3070 at 1440p. Built it specifically for desktop and haven’t tested it on mobile or xr devices.

I believe this is the only screen space reflection solution other than Shiny-SSR. Most what I’ve seen are either planar shaders or material bound reflections shaders.

Screenshots:

1280×697 1.71 MB

1589×1032 616 KB

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Looks great, amazed no one else has replied. Looking forward to giving it a go. Well done :slight_smile:

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How can this be used with custom lighting models? That is, to access the SSR result like the URP Lit shader would?

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Sorry for the late reply.
I store the results of the SSR within the following render target name:
uniform sampler2D _ReflectedColorMap;
You can sample this texture like any other texture like this:
float4 reflectedUv = tex2D(_ReflectedColorMap, i.uv);

Despite the name, this texture contains only the reflected normalized screen space position in the r and g channels. The b channel contains the smoothness value and the alpha channel contains the reflection mask value. I haven’t designed this solution around custom lighting models so this is just a workaround…

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This looks spectacular. Any chance on a Forward+ version of this?

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I wouldn’t mind seeing a Forward+ version of this!

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