I'm trying to make a material that has flecks of glitter in it. The main technique I've found to achieve this effect is to use a Voronoi diagram as a normal map, with various amounts of embellishment on top. The shader graph editor has a Worley noise node which is related but produces the "spider web" version of a Voronoi diagram, instead of flat polygons of a consistent color. Is there a trick for converting this Worley texture into a vanilla voronoi diagram, or am I missing something else obvious? Or is what I want not currently possible?

For the MaterialX shadergraph, the given example hard-codes two textures for blending at runtime ( https://developer.apple.com/documentation/visionos/designing-realitykit-content-with-reality-composer-pro#Build-materials-in-Shader-Graph ) Can I instead generate textures at runtime and set what those textures are as dynamic inputs for the material, or must all used textures be known when the material is created? If the procedural texture-setting is possible, how is it done, since the example shows a material with those hard-coded textures? EDIT: It looks like the answer is ”yes” since setParameter accepts textureResources https://developer.apple.com/documentation/realitykit/materialparameters/value/textureresource(_:)?changes=l_7 However, how do you turn a MTLTexture into a TextureResource?