Shaders and Materials

How Flora works with your existing shaders, and what to consider when authoring new ones.

Flora supports a wide range of Unity shaders and includes utilities for patching both Shader Graph and manually authored shaders for compatibility with instancing and selection.

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Shader Requirements

Every pass must include the following pragma, and will only work when the shader target is greater than 4.5.

#pragma multi_compile _ DOTS_INSTANCING_ON
#pragma target 4.5

For Universal, you can use the following include_with_pragmas to automatically setup the pass for DOTS.

#include_with_pragmas "Packages/com.unity.render-pipelines.universal/ShaderLibrary/DOTS.hlsl"

Additionally for picking to work, ensure the ScenePickingPass correctly returns unity_SelectionID and not _SelectionID.

This is a common error in 3rd party shaders, and affects Amplify Shader Editor (a bug request has been submitted). For ASE, modify the template shader and replace the return result of _SelectionID with unity_SelectionID in the fragment shader of any templates you are using.

// return _SelectionID; Replace this line with:
return unity_SelectionID;