[not a bug]Dynamic lights shining through walls

Daggorath · Post by **Daggorath** » Fri Mar 31, 2006 3:09

When there is a light source close to a wall (a fire stick for example), you can see the light shining through the other side of the wall on the ground and on wall corners. I know Doom wasn't meant to have dynamic lights from the beginning, but can this problem be fixed?

Shinjanji · Post by **Shinjanji** » Fri Mar 31, 2006 7:03

Not without a stencil shadow buffer or some complex trickery. But this is GZDoom, not Doom 3.

Caligari_87 · Post by **Caligari_87** » Fri Mar 31, 2006 7:51

IDEA: Edge has pretty sick "shadows". I'm sure you've seen them, Graf. Perhaps the same principle could be applied to dynamic lights with stenciling or something?

Post by **Graf Zahl** » Fri Mar 31, 2006 9:07

This is a non-trivial problem that cannot be solved without considerable alterations of how the engine works. And that's something I won't do.

Post by **Enjay** » Fri Mar 31, 2006 15:57

Many pre-doom3 generation engines also show this problem.

Eriance · Post by **Eriance** » Thu Apr 20, 2006 7:06

It's not surprising. Even half Life and it's mods does this. When people fire guns, the lights go right through the walls.

Post by **Graf Zahl** » Thu Apr 20, 2006 9:01

... and they even light surfaces facing away from the light source although excluding them is a trivial calculation so it's amazing it wasn't done.