Use shader with another createCanvas

[sableRaph]

I believe this is called double buffering. You have a back buffer and a front buffer and switch them every frame.

The thread below should have the answers you’re looking for

Backbuffer in p5js

I found a shader on the GLSL Sandbox website that I want to use. (It might be their e#375.15.) This shader wants to use WebGL’s backbuffer feature. It seems from a Google search that p5js does not allow reference to backbuffer. The p5js example that i did find uses creategrahics (same dimensions as the canvas) and ‘backbuffer.image(canvas, width * -0.5, height * -0.5, width, height)’ to populate it in the sketch’s draw function, so my question is ‘Is this (using createGrahics) really what I hav…