naso

#ifdef GL_ES
precision highp float;
#endif
uniform sampler2D to, from;
uniform float progress;
uniform vec2 resolution;

void main() {
  vec2 p = gl_FragCoord.xy / resolution.xy;
  vec4 a = texture2D(from, p); //vec4(0.0, 0.0, 0.0, 0.0);