# ColinLeung-NiloCat/UnityURPUnlitScreenSpaceDecalShader

Unity unlit screen space decal shader for URP. Just create a new material using this shader, then assign it to a new unity cube GameObject = DONE, now you have unlit decal working in URP

Repository: https://github.com/ColinLeung-NiloCat/UnityURPUnlitScreenSpaceDecalShader
Canonical: https://ross.abutalabs.com/products/unityurpunlitscreenspacedecalshader
Language: ShaderLab
License: MIT
License Family: permissive
Topics: unity, shader, decal, graphics, unity3d, urp, srp, screenspace
Last push: 2022-09-16T10:09:57+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 2433, "days_push": 1447, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1348, forks 139 (observed 2026-08-28T04:04:27.737733+00:00)

## What it is
A Unity shader for the Universal Render Pipeline (URP) that renders unlit screen space decals. Each decal is simply a Unity cube GameObject with a material using this shader, projecting textures onto non-flat surfaces.

## Use cases
- render bullet holes on walls in Unity URP
- project dirt or logo decals onto uneven surfaces
- add blood splat effects to characters and environments
- create projected fake blob shadows
- render 3D projected UI elements
- add explosion scorch marks to terrain

## When to choose
- you need decals on non-flat surfaces where a flat transparent quad won't work
- you use Unity's Universal Render Pipeline and want a simple drop-in decal shader
- you want SRP batcher compatible unlit decals without a full decal project system

## When to avoid
- you use the built-in render pipeline or HDRP instead of URP
- you need lit decals with lighting response
- your project cannot enable the URP depth texture

## Facets
- artifact type: library
- maturity: maintenance
- function: graphics, image-processing
- domain: graphics
- platform: game-engine, cross-platform
- tags: unity, shader, urp, decal, shaderlab, screen-space, srp, game-development

## Member repositories
- ColinLeung-NiloCat/UnityURPUnlitScreenSpaceDecalShader (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:27.737733+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:42:24.188042+00:00, confidence not recorded.
  - readme: https://github.com/ColinLeung-NiloCat/UnityURPUnlitScreenSpaceDecalShader (fetched 2026-08-28T04:04:27.737733+00:00, sha a95c986bfa7f)
- Data as of 2026-08-30T08:39:29.467469+00:00.