Mental Ray questions!

[flyws]

我?Maya用Mental Ray render ??scene，用?普通?shader同SSS shader，輸出選擇?Tiff format with Mask and Z depth。
但系render出來系Mask channel同Z depth度唔見?SSS shader object果部份，咁之後我用Photoshop打開這Tiff format file，
竟然變成透明layer，又冇?Mask channel and Z depth，之前我用Maya software render是沒有這問題的，到底是那裡出錯，
希望各位及版主多多指教！

[h2o]

你去 render setting, mental ray 個版, 最底有個 custom entities
tick 著 pass custom alpha channel

[flyws]

版主果然系開慣夜的人，咁夜重系度，多謝你?問覆，等我馬上試試！

[flyws]

巳經試?，但系點解系Photoshop開變成layer file？冇?mask?！

[stantang]

That's a layer with alpha (mask), no different from a PSD "background" with an extra mask. TIFF doesn't carry depth so you have to with use another format like IFF or simply render another depth pass.

Oh, I just remember if you use MR to render, a seperate depth will be rendered for you automatically (if you have the option checked).

[stantang]

你去 render setting, mental ray 個版, 最底有個 custom entities
tick 著 pass custom alpha channel

BTW, seems like Maya 2008 "fixed" this bug for SSS shaders... no need to check that box again.

[flyws]

多謝回覆，但我想問系Photoshop開tiff file，變成透明layer是否正常？

[LoGao]

That's a layer with alpha (mask), no different from a PSD "background" with an extra mask.

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