Doom3world

Hey, i would be happy if i've got an actual reply from some coder this time. What i'm asking is, how can i change the way the shadows are rendered? I've seen many mods(like Sikkmod) do this, and i just want to grasp the general concept. Is it SDK work? Is it shaders? Please, if someone would be kind enough to explain this or point me to a tutorial, i would be grateful.

Sikkmod was developed before the gpl release so his new graphical features are a "engineering marvel" basically because his stuff works with all the code thats exposed from the engine to the game module. This also the reason why his stuff is "slower than it should be", hes been doing a lot of work since than so I can speak for his stuff now he can talk to you more about it.

They are plenty of ways do make the shadows in D3 more visual appealing(feathered edges, etc), but there isn't a tutorial atm to show you how to do that. What I choose to do in idTech 4 CDK is I completely dropped the stencil shadow code and went with Shadow Mapping instead. If you take a look at "renderer/draw_exp.cpp" there is shadow mapping code there and it works if you can re-create the corrisponding arb shaders to go along with it. This implementation doesn't work on the world though, and only works on entities. You can take a look at my code at https://idtech4cdk.googlecode.com/svn/t ... /renderer/:

Specfically:

tr_shadowmap.cpp
tr_shadowmap_cache.cpp
tr_shadowmap_cache.h

and at https://idtech4cdk.googlecode.com/svn/t ... nderprogs/

depth.crp
shadow.crp

What it really comes down to is knocking out a simple app thats seperate from the D3 code that can do whatever shadow system you want to do and transpose that over to the d3 codebase.

What i want to achieve is to make the pitch-black shadows disappear. If these shadows are there due to the stencil shadows(if that's what you've said), i will have to try and get shadow maps to work on the world... Although i don't have so much hope. Thanks for your reply and for the code you've linked. If there is a way to remove the pitch-black areas (and make them simply dark) without needing to re-write the system, please tell me

Also, what are arb shaders? I don't have a good insight of this in general.

Edit: I've found no draw_exp.cpp in the Doom 3 SDK. I'm either using an older version of the SDK, or you were referring to your code, which does have this file.

then you simply need ambient light...included in sikkmod (and toggleable in the menu), or the original one done here by rebb I think....search for ambient light shader on this board...