VertexAttributeStep
 Available since LÖVE 11.0  
 This enum is not supported in earlier versions. 
The frequency at which a vertex shader fetches the vertex attribute's data from the Mesh when it's drawn.
Per-instance attributes can be used to render a Mesh many times with different positions, colors, or other attributes via a single love.graphics.drawInstanced call, without using the love_InstanceID vertex shader variable. 
Constants
- pervertex
 - The vertex attribute will have a unique value for each vertex in the Mesh within a single instance.
 - perinstance
 - The vertex attribute will have a unique value for each instance of the Mesh.
 
See Also
    © 2006–2020 LÖVE Development Team
Licensed under the GNU Free Documentation License, Version 1.3.
    https://love2d.org/wiki/VertexAttributeStep