support GL_QUADS with glDrawElements
support GL_QUADS with glDrawElements

seandepagnier/glshim,RobertoMalatesta/glshim,seandepagnier/glshim,lunixbochs/glshim,seandepagnier/glshim,RobertoMalatesta/glshim,lunixbochs/glshim,RobertoMalatesta/glshim,seandepagnier/glshim,lunixbochs/glshim,lunixbochs/glshim,RobertoMalatesta/glshim