OpenGL Custom Quads
This PR adds custom quads as requested in #171 (closed) . I'm not marking that issues as 'fixed' though as they still have to be added to the webworkers, this PR encompasses only the OpenGL layer changes.
This PR adds custom quads as requested in #171 (closed) . I'm not marking that issues as 'fixed' though as they still have to be added to the webworkers, this PR encompasses only the OpenGL layer changes.