/* vim: set ft=c: */

/* <https://www.shadertoy.com/new> */

void
mainImage (out vec4 fragColor, in vec2 fragCoord)
{
	// Normalized pixel coordinates (from 0 to 1)
    // vec2 uv = fragCoord.xy / iResolution.xy;

    // Texture coordinates
    vec2 uv = TexCoords;

	// float du = 1.0 / iResolution.y;
	// vec2 uv = du * (fragCoord.xy - (0.5 * iResolution.xy));

	// Time varying pixel color
	vec3 col = 0.5 + 0.5 * cos (iTime + uv.xyx + vec3 (0, 2, 4));

	// Output to screen
	fragColor = vec4 (col, 1.0);
}