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How to generate and render caustics in 3d studio max

如何在3dstudiomax中产生和渲染焦散线

Will not provide corrosion resistance against many acids or other caustics .

不提供对酸或其它腐蚀剂的抗腐蚀能力。

The directional light was a good choice to generate nice , smooth shadows and caustics .

方向灯时很好的产生漂亮和柔和的阴影和焦散的灯光。