rolling back (most of) lua 5.2 compatibility patches. hopefully that will unbreak unC0Rr's lua issues for now.
uniform sampler2D tex0;
uniform vec4 tint;
uniform bool enableTexture;
varying vec2 tex;
void main()
{
if(enableTexture){
gl_FragColor = texture2D(tex0, tex) * tint;
}else{
gl_FragColor = tint;
}
}