GLSL shader test

waves.glsl

void main(void)
{
	vec2 n = 2.0 * (gl_FragCoord.xy / iResolution.xy) - 1.0;

	vec2 uv = vec2(0,0);
	float theta = iGlobalTime * 0.2;
	uv.x = cos(theta) * n.x + sin(theta) * n.y;
	uv.y = -sin(theta) * n.x + cos(theta) * n.y;
	
	vec4 v = texture2D(iChannel0, vec2(0.0,iChannelTime[0]));
	float col = 0.0;
	float i = 1.0;
	for(float i=1.0;i<16.0;i++)
	{
		uv.x += sin(100.0*i + 0.5 * uv.y + iGlobalTime * 5.0) * v.x;
		col += abs((.003*i)/uv.x) * v.x * v.x;
	}
	col = 1.0 - col;
	gl_FragColor = vec4(col, col, col, 1.0);
}