View source for Foliage Vertex Color

[[Vertex color]] can be used to add fake lighting to flat [[Foliage]] meshes to create the illusion of a softly-lit foliage volume.

Foliage meshes in game are usually made using flat planes with a [[TransparencyMap|transparent]] texture containing a bunch of leaves (or grass blades). These textures are used instead of modeling each leaf or blade of grass discretely, because the complex geometry renders slowly and also greatly increases the memory cost for the model. 

But flat planes generally do not shade very well when lit, so foliage models are often rendered in-game without any lighting (see [[EmissiveMap|Emissive]]). If lighting is an option however, editing the [[VertexNormal|vertex normals]] is one way to get better lighting.

[[image:VertexColor_Tree.gif|frame|none| [[Vertex color]] can be used to add volume to unlit foliage geometry.<br/><span style="font-size: smaller">Image by [http://ericchadwick.com Eric Chadwick] ]]

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[[Category:Texturing]]