#ifdef GL_ES
precision mediump float;
#endif

uniform float time;
uniform vec2 resolution;

void main() {
    vec2 st = gl_FragCoord.xy/resolution.xy;
    st.x *= resolution.x/resolution.y;

    vec3 color = vec3(0.);
    color = vec3(st.x,st.y,abs(sin(time)));

    gl_FragColor = vec4(color,1.0);
}