Texture downscaling: higher values result in lower texture quality.

　　材质缩减，越靠下的选项画质越低

　　Texture memory size: sets the amount of graphics card memory allocated to textures. Larger values will decrease the amount of streaming that occurs in game and will make the game run more smoothly, but they can also cause the graphics card to run out of memory and even result in game crashes. Choose a reasonable value based on the amount of memory available on your graphics card.

　　为材质所分配的显存，开越大瞬卡越少，但是开太多了爆了显存的话可能导致游戏崩溃，越靠下的选项画质越高

　　Shadow quality: affects graphics performance. Consumes GPU power without affecting CPU performance.

　　阴影细节，吃显卡而不是CPU，越靠下的选项画质越高

　　Number of shadowed lights: set the maximum number of lights that cast shadows. Affects graphics performance. Consumes GPU power without affecting CPU performance.

　　光源数目，吃显卡而不是CPU，越靠下的选项画质越高

　　LOD distance: distance scale for level of detail on meshes. Lower values improve game performance but result in reduced detail on models.

　　视距相关，越靠下的选项画质越高

　　Bloom: effect greatly improves quality of game graphics without placing excess demands on GPU.

　　不是很吃显卡的提升画质选项，越靠下的选项画质越高

　　Light shafts: visual effect recommended for medium-high/high-end machines. Should be disabled on older systems.

　　为中高端机器设计，越靠下的选项画质越高

　　Anti-aliasing: demanding effect that can significantly reduce performance, so it should be disabled on medium and low-end machines.

　　抗锯齿，中低端机器建议关闭，越靠下的选项画质越高