Color blending #
Blending two colors is implemented by doing a component-wise multiplication between them
CODIGO: blend.frag
precision mediump float;
// uniforms are emitted from the sketch
// https://p5js.org/reference/#/p5.Shader/setUniform
uniform vec4 uMaterial1;
uniform vec4 uMaterial2;
void main() {
gl_FragColor = uMaterial1 * uMaterial2;
}