(r376) UDMF Translucency Bug

[Slimeinator]

When I was creating a level for my mod, I noticed a bug with UDMF translucency.

This is the area of my level that demonstrates the bug:

http://www.mediafire.com/download.php?5yztnmmzzm2

All the lines in the glass structure face inward. If you view the back of one of the sidedefs, you'll notice that it is less translucent than the front side. Two of the lines in the 'room' are pass-through. The bug applies even when viewing from the outside sky box. Load with Doom 2.

[Graf Zahl]

I don't see anything wrong here. Please don't forget that if you look at your constructs from the outside you will always have two translucent walls to look through - making the entire image appear less translucent.

[Slimeinator]

I already considered that. Try viewing from the outside. (noclip or one of the pass-through lines)

[Graf Zahl]

From the outside it looks like viewing through 2 translucent planes, i.e. as it should.
Try placing sprites inside and outside your corridor and watch them from the other side. If they look different you may report back.

[Slimeinator]

They do look different. When viewing from the outside, the sprite looks darker due to the window being darker. The opposite is true when viewing from the inside.

[Graf Zahl]

I don't think so. When flipping one linedef around there is no difference so it's not related to the side you are looking at.

When taking out parts of the walls to do direct comparisons of looking from the inside or outside - same result.

I can't see anything wrong here.

[Slimeinator]

Hmmm. It could just be my graphics card, in that case.