Instead of using textures you can get very good performance from shaders. Example (not mine): https://www.shadertoy.com/view/tlB3zK https://www.shadertoy.com/v

Instead of using textures you can get very good performance from shaders. Example (not mine): https://www.shadertoy.com/view/tlB3zK https://www.shadertoy.com/view/tlB3zK