Eva Codes 👩💻 @eva.codes · Jun 7 The infection state of each plant is used to drive a blend factor as a per-instance shader parameter. This is used in the fragment shader to blend materials between two different albedos/textures. The blend window can also be adjusted per-material, eg the mushrooms here "pop" in sharper than wood
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The value compared against isn't just the height, I wanted to eg allow travel along branches, horizontal stuff, non-uniformity in general, so I used the vertex color. Each vertex's red channel is used as the threshold, so I can direct the flow of the blend (here the whiter part will blend later):