don't create many materials to render lightmapping
don't create many materials to render lightmapping

aidinabedi/playcanvas-engine,H1Gdev/engine,playcanvas/engine,H1Gdev/engine,guycalledfrank/engine,sereepap2029/playcanvas,aidinabedi/playcanvas-engine,sereepap2029/playcanvas,sereepap2029/playcanvas,playcanvas/engine,MicroWorldwide/PlayCanvas,MicroWorldwide/PlayCanvas,guycalledfrank/engine