farvalue

grantkrieger · Post by **grantkrieger** » Fri Sep 28, 2007 7:08 am

Hello,

I have a large warehouse which is my world. In this I have many models. I want the whole warehouse to be visible all the time but I want the far value applied on models within .

Example
- If this was possible it would be great to set the far value for the Warehouse to 18000 and set far value to models within to 3000.

The reason why I need far value on models set down is I have many and I need better performance. However my warehouse looks funny with a low far value.

Please help.

Thanks

Grant

JP · Post by JP » Fri Sep 28, 2007 9:05 am

You could use fogging to make the farvalue drop off point invisible and you'd just get fog going off into the distance, but of course this might not suit your warehouse as you don't usually have fog inside...

I guess an option could be to first render the warehouse with the farvalue required and then change the farvalue in the camera and then render the rest of the objects... I'm not sure if that would work very well and you'd have to edit the source or call render methods yourself rather than smgr->drawAll();

Another option is that i guess you could do this with shaders, so if you can manage shaders then that could be the easiest method.

grantkrieger · Post by **grantkrieger** » Fri Sep 28, 2007 9:49 am

Thanks.

Fogging seems like it might be the easiest route. Sorry I am not familar with fogging. How do I implement fogging ? I dont even know where to start

Thanks

Again

Umbra · Post by **Umbra** » Fri Sep 28, 2007 9:56 am

As far as i know irrlicht dont support fog.

JP · Post by JP » Fri Sep 28, 2007 10:08 am

Irrlicht does support fog. It's in one of the examples... but i forget which...

You have to set up the driver initially with fog values such as where it starts and ends etc and then for each node you have to set it to receive the fog, in the materials i think.

So check the API (IVideoDriver and ISceneNode) for fog functions.

hybrid · Post by **hybrid** » Fri Sep 28, 2007 11:29 am

It's example 8. You have some values stored in the driver (such as color) and you enable fog per MeshBuffer in the Material. However, it'll probably look strange if you don't enable fog for a complete scene node... So you could use the ISceneNode methods to alter material settings.