Optimal approach for very complex image creation

I’m generating complex images with millions of vertices, but final output is a still image (a digital painting). I’m thinking to optimize performance (post rendering) I should draw to an offscreen buffer, texture a plane and dispose of everything else. Does this seem a sane approach and/or is there is a better way?

If it’s a static image - what “post rendering” performance do you mean :thinking: ?

With all the vert data in memory the browser gets super sluggish, but since it’s a static image, all the data can be disposed once I have the texture mapped to a single plane.