Changed render system to default to image width or height if given width or hight is 0.
Changed render system to default to image width or height if given width or hight is 0.

iamcsharper/gqe,tectronics/gqe,taschetto/gqe,GatorQue/gqe,iamcsharper/gqe,Haellsigh/gqe,Haellsigh/gqe,gwowen/gqe,timadkins/gqe,taschetto/gqe,iamcsharper/gqe,gwowen/gqe,lukaszk159/gqe,Haellsigh/gqe,taschetto/gqe,lukaszk159/gqe,timadkins/gqe,GatorQue/gqe,snowfox0x/gqe,snowfox0x/gqe,tectronics/gqe