Shadows from Alpha textures in Source?

[robert.briscoe]

Hey guys,

I've beeen playing witht he ep2 engine recently and am trying to get alpha textures working. So far I added the following to the $light compile parameter

Code:

-final -staticproppolys -staticproplighting -textureshadows

Seems to activate per vertex lighting and shadows etc but for some reason it does not like my alpha texture and just casts a shadow for the whole polygon instead!

Anyone had this problem before or know where im going wrong?

[hessi]

you have been valved!

:megaman:

topic: this is as intended from valve. there is no raytrace shadowing going on through alpha textures. the compiler doesnt know about transparency and shit.

maybe this tutorial will help: http://thomashess.net/exchange/tutorial ... hadows.pdf

[robert.briscoe]

Actually there is raytracing through alpha take a look at the image below. When I compile lighting with an episode 2 prop in there, VRAD displays the messege:

Loaded alpha texture materials\models\props_foliage\arbre01.vtf

and as you can see you get lovely alpha shadows.

The problem Im having now is figuring out what the hell I have to do to get it working with my props/textures...

[dux]

Hessi down.

[robert.briscoe]

Woot! as I suspected i needed to add something to lights.rad:

forcetextureshadow props_foliage/tree_dead01.mdl

This forces VRAD to use alpha in shadow calculations.

Success!

[Sentura]

props to you for figuring this out, someone sticky this thread.

[skdr]

Good work. That looks very cool but looks like it's going to hurt compile times

[Minos]

What lightmap scale are you using? Looks pretty detailed for the standard one.

[Defrag]

cool