#ifdef GL_ES
precision mediump float;
#endif

uniform vec2 u_resolution;
uniform vec2 u_mouse;
uniform float u_time;




void main() {
  vec2 st = gl_FragCoord.xy/u_resolution.xy;
  vec3 color = vec3(0.5);

  // st *= 1. + u_mouse * sin(0.0001 + u_time );
  
  st *= 1.;

  color.rb = vec2(0.1 + st);
  // color.rg = vec2(0.8);
  
  /*
  color.r = 0.1;
  color.g = 0.5;
  color.b = 0.1;
  */



  gl_FragColor = vec4(color,0.9);
}