51 lines
2.4 KiB
Markdown
51 lines
2.4 KiB
Markdown
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# Shaders and Materials
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URP provides the following Shaders for the most common use case scenarios:
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- [Complex Lit](shader-complex-lit.md)
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- [Lit](lit-shader.md)
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- [Simple Lit](simple-lit-shader.md)
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- [Baked Lit](baked-lit-shader.md)
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- [Unlit](unlit-shader.md)
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- [Terrain Lit](shader-terrain-lit.md)
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- [Particles Lit](particles-lit-shader.md)
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- [Particles Simple Lit](particles-simple-lit-shader.md)
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- [Particles Unlit](particles-unlit-shader.md)
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- [SpeedTree](speedtree.md)
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- [Decal](decal-shader.md)
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- Autodesk Interactive
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- Autodesk Interactive Transparent
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- Autodesk Interactive Masked
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## Shader compatibility
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Lit and custom Lit shaders written for the Built-in Render Pipeline are not compatible with URP.
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Unlit shaders written for the Built-in Render Pipeline are compatible with URP.
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For information on converting shaders written for the Built-in Render Pipeline to URP shaders, see the page [Converting your shaders](upgrading-your-shaders.md).
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## Choosing a shader
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The Universal Render Pipeline implements Physically Based Rendering (PBR).
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The pipeline provides pre-built shaders that can simulate real world materials.
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PBR materials provide a set of parameters that let artists achieve consistency between different material types and under different lighting conditions.
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The URP [Lit shader](lit-shader.md) is suitable for modeling most of the real world materials. The [Complex Lit shader](shader-complex-lit.md) is suitable for simulating advanced materials that require more complex lighting evaluation, such as the clear coat effect.
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URP provides the [Simple Lit shader](simple-lit-shader.md) as a helper to convert non-PBR projects made with the Built-in Render Pipeline to URP. This shader is non-PBR and is not supported by Shader Graph.
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If you don’t need real-time lighting, or would rather only use [baked lighting](https://docs.unity3d.com/Manual/LightMode-Baked.html) and sample global illumination, choose a Baked Lit Shader.
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If you don’t need lighting on a Material at all, you can choose the Unlit Shader.
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## SRP Batcher compatibility
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To ensure that a Shader is SRP Batcher compatible:
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* Declare all Material properties in a single CBUFFER called `UnityPerMaterial`.
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* Declare all built-in engine properties, such as `unity_ObjectToWorld` or `unity_WorldTransformParams`, in a single CBUFFER called `UnityPerDraw`.
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For more information on the SRP Batcher, see the page [Scriptable Render Pipeline (SRP) Batcher](https://docs.unity3d.com/Manual/SRPBatcher.html).
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