remove seams from skybox when using lower mips
remove seams from skybox when using lower mips

shinate/engine,MicroWorldwide/PlayCanvas,H1Gdev/engine,SuperStarPL/engine,playcanvas/engine,horryq/engine-1,RainsSoft/engine,aidinabedi/playcanvas-engine,RainsSoft/engine,horryq/engine-1,SuperStarPL/engine,maxwellalive/engine,H1Gdev/engine,guycalledfrank/engine,SuperStarPL/engine,shinate/engine,playcanvas/engine,nizihabi/engine,MicroWorldwide/PlayCanvas,sereepap2029/playcanvas,3DGEOM/engine,sanyaade-teachings/engine,nizihabi/engine,sereepap2029/playcanvas,nizihabi/engine,horryq/engine-1,shinate/engine,sereepap2029/playcanvas,RainsSoft/engine,aidinabedi/playcanvas-engine,3DGEOM/engine,sanyaade-teachings/engine,maxwellalive/engine,3DGEOM/engine,maxwellalive/engine,guycalledfrank/engine,sanyaade-teachings/engine