RGB Split Shader

rgb_shader.fsh

form sampler2D CC_Texture0; 

varying vec2 v_texCoord; 
uniform float u_displacement; 

void main( ) { 
  vec4 color = texture2D( CC_Texture0, v_texCoord ); 
  vec2 DisplacementScroll = vec2(u_displacement, -u_displacement); 
  vec2 texCoord2 = v_texCoord + DisplacementScroll; 
  DisplacementScroll = vec2(-u_displacement, u_displacement); 
  vec2 texCoord3 = v_texCoord - DisplacementScroll; 
  vec4 color1 = texture2D(CC_Texture0, v_texCoord); 
  vec4 color2 = texture2D(CC_Texture0, texCoord2); 
  vec4 color3 = texture2D(CC_Texture0, texCoord3); 
  gl_FragColor = vec4(color1.r,color2.g,color3.b,1.0); 
}