fix devide by zero in texture viewer when construct orientation matrix (#1825)
fix devide by zero in texture viewer when construct orientation matrix (#1825)


jdryg/bgfx,LWJGL-CI/bgfx,fluffyfreak/bgfx,bkaradzic/bgfx,emoon/bgfx,fluffyfreak/bgfx,emoon/bgfx,fluffyfreak/bgfx,jdryg/bgfx,jpcy/bgfx,bkaradzic/bgfx,LWJGL-CI/bgfx,jdryg/bgfx,jpcy/bgfx,emoon/bgfx,jpcy/bgfx,mendsley/bgfx,jdryg/bgfx,mendsley/bgfx,bkaradzic/bgfx,fluffyfreak/bgfx,mendsley/bgfx,LWJGL-CI/bgfx,jpcy/bgfx,bkaradzic/bgfx,LWJGL-CI/bgfx