#ifdef ALPHA_TEST_ENABLED
FRAGMENT_SHADER_USE_TEX_COORD

#ifdef DIFFUSE

#ifdef DIFFUSE_TEXTURE
uniform sampler2D  uTextureDiffuse0;
#endif //DIFFUSE_TEXTURE

#ifdef DIFFUSE_TEXTURE_BLEND
uniform sampler2D  uTextureDiffuse1;
uniform float      uTextureDiffuseWeight;
#endif //DIFFUSE_TEXTURE_BLEND

#endif //DIFFUSE

#endif //ALPHA_TEST_ENABLED

void main() {

#ifdef ALPHA_TEST_ENABLED

#ifdef DIFFUSE_TEXTURE_BLEND
   gl_FragColor = (texture2D(uTextureDiffuse0, vTexCoord) *
   uTextureDiffuseWeight + texture2D(uTextureDiffuse1, vTexCoord) *
   (1.0 - uTextureDiffuseWeight));
#else

#ifdef DIFFUSE_TEXTURE
   gl_FragColor = texture2D(uTextureDiffuse0, vTexCoord) ;
#else
   gl_FragColor = vec4(1);
#endif //DIFFUSE_TEXTURE

#endif //DIFFUSE_TEXTURE_BLEND

#endif //ALPHA_TEST_ENABLED

   gl_FragColor.r = gl_FragCoord.z;
}