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//
// Fragment shader for procedural bricks
//
// Authors: Dave Baldwin, Steve Koren, Randi Rost
// based on a shader by Darwyn Peachey
//
// Copyright (c) 2002-2006 3Dlabs Inc. Ltd.
//
// See 3Dlabs-License.txt for license information
//
#ifdef GL_ES
precision highp float;
#endif
varying vec2 v_uv;
uniform float u_time;
uniform float u_wave;
uniform float u_wave1;
uniform float u_wave2;
uniform float u_speed;
void main(void)
{
float x = v_uv.x ;
float y = v_uv.y ;
float time = u_time*u_speed;
float wave = (cos(time + y / (u_wave+0.2) + cos(x / (u_wave+0.3) + cos((y / (u_wave+0.1))))));
float wave1 = (sin(abs(wave + y/u_wave1)));
float wave2 = (sin(abs(wave1 + y/u_wave2)));
gl_FragColor = vec4( abs(vec3(wave2,wave1,wave)),1.0);
}
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