uniform sampler2D _MainTex;
uniform sampler2D _GUIClipTexture;
void main ()
{
  vec4 col;
  col.xyz = (texture2D (_MainTex, gl_TexCoord[0].xy).xyz * gl_Color.xyz);
  col.w = (gl_Color.w * texture2D (_GUIClipTexture, gl_TexCoord[1].xy).w);
  gl_FragData[0] = col;
}