There's ShaderToy, that works with actual pixels and shader code, but allows some fun effects to be made with very little code: https://www.shadertoy.com/view/4

There's ShaderToy, that works with actual pixels and shader code, but allows some fun effects to be made with very little code: https://www.shadertoy.com/view/4ljGD1 https://www.shadertoy.com/view/4ljGD1 (and some really crazy raymarching stuff to be done by those with serious math/shader skills)