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this is as far as I get. as you can see the surface material isn't turning transparent when i make the connection from the second projection. its connecting the out transparancey from the projection to the out transparacey surface mat. but i'm not getting the same results as K. Brown in the tutorial. This is from the apache tutorial, animation cd. part 5. so with this setup I have a black bar across the far end of my ground plane where the mts. meet, and moving the mts plane doesnt fix it. The black needs to be transparent, but look at the mat on the surface shader, it remains pitch black. does anybody even know what I'm talking about?