ShaderOS

ShaderOS scans the materials and shaders already in your Unity project and reports on their health, without changing anything. Scan Project, available from the toolbar on every tab, checks every material against its assigned shader and surfaces problems as it finds them. Each material gets its own health score from 0 to 100, and the Overview tab rolls these up into a single project-wide score, so you can see at a glance which parts of a project need attention before a build.

The Materials tab lists broken shader references and missing texture properties by name, each with a direct link back to the affected material in the Project window — the common causes of pink materials and missing-asset warnings that are easy to miss by hand once a project has a few hundred materials in it.

When URP or HDRP is the active render pipeline, ShaderOS also checks each material's shader for SRP Batcher compatibility and explains why a shader fails when it does. This check doesn't apply under the Built-in Render Pipeline, since SRP Batcher is a feature of URP and HDRP specifically.

The Keywords tab tracks your project's use of Unity's 256-keyword global budget, each shader's local keyword count against Unity's 64-keyword per-shader limit, and flags keywords declared by more than one shader as consolidation candidates.

The Variants tab estimates each shader's theoretical variant count from its enabled keywords and classifies the result by risk. This is always a pre-strip upper bound, not an exact compiled count — useful for catching a variant explosion while it's still cheap to fix.

The Overview tab also builds a Material → Shader → Texture dependency graph from Unity's own asset dependency data and reports any unreferenced assets it finds.

A Load Demo Data action is available from every tab, so you can explore a fully populated example report before running your first real scan. Demo data never touches your project and is clearly labeled throughout the window. Project Settings lets you set a default scan scope — the full project or a specific folder — along with health-score thresholds and which warnings appear.

ShaderOS is an Editor-only tool: it adds no assemblies, components, or dependencies to a built player. It requires Unity 2021.3 LTS or newer and supports the Built-in Render Pipeline, URP, and HDRP.

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