Editing and Customization > Modding Help

Static Prop Alpha Textures

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Jeron [SharpSh00tah]:
SSL, really low lightmap on the textures, and use the "blocklight" texture. Just like you did in bunker.

Jonathon [SSL]:
I know what lightmaps are and how to use them. The Orange Box engine has the ability to create lightmap shadows based upon the alpha channel of the texture of a static prop, as seen with Fourtecks' grate prop on the right in the screenshot I posted when using the -TextureShadows command with vrad. If I can't get it working, I could just use blocklight textures, but it's wouldn't be as accurate to the texture, and wouldn't make sense to use when the OB engine has this great feature readily available to use.

Mike [fourtecks]:
I looked into this further for you today. It seems it does not like the UVs created by that awful vmf --> smd tool you are using. I rebuilt the UVs for a test and I got them to cast properly. Next time you see me online get ahold of me and I can hook you up with some updated files, though I may be slightly hard to get to this weekend as my friend is in town. Sunday night would be best, but I should be home noon-ish EST Fri + Sat.


@sharp : That method is quite outdated and counter-productive for this type of thing. Plus it's not as accurate. textureshadows are amazing, now they just need to add support so you can get brushes to cast them.

Mangley:
I'm having related problems with casting shadows from those library grate props in a map I'm working on...

Seemingly for no reason they completely block light in my map despite the fact that they cast shadows correctly on library. Is there a reason why? It's definitely not the lightmaps, is there some special trick to making it work?

Thanks.

Jonathon [SSL]:
It turns out that the problem I was having was caused by the UV's being improperly aligned when the prop was compiled (or something like that).

When you compile the map, go to expert compile mode, select light.exe, and add the parameters -TextureShadows and -StaticPropPolys. This tells vrad to look for props with alpha channels that can be used to cast lightmap shadows.

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