RE: [Algorithms] Bullets on walls

[Jaimi M. <ja...@al...>]

In d3d, this is the way I do it:

Create decals with a one pixel transparent border.
Then, set the texture address mode to "Clamp".
Calculate new UV coordinates for your decal based on the wall, instead
of the Decal - then redraw the entire wall with your decal texture and
new UV coordinates.
This way you do not have to clip at all. I would assume you could
do the same in OpenGL.

Jaimi

-----Original Message-----
From: gda...@li...
[mailto:gda...@li...]On Behalf Of
Tiziano Lena
Sent: Thursday, July 20, 2000 2:19 PM
To: gda...@li...
Subject: [Algorithms] Bullets on walls


Hi!
I added wallmarks in my 3d engine but when I fire on the border of a wall I
would like to clip the wallmark to the wall.

I have some ideas but I think they are a bit slow... (manual clipping,
texgen, stencil?)

How do you do this?

Thanks for any help!



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