DirectX clipping seems to fix all drawing bugs

[millka]

Hi,

in file WorldWindow.cs, function WorldWindow.OnDeviceReset (), various DirectX device options are set. One of them, device.RenderState.Clipping, tells DirectX to clip everything drawn against the viewing frustum. Unfotunately, this option is explicitely turned off.

Why ? :blink:

I'm messing around with the code drawing the latitude and longitude lines, and it would be really nice, if i could simply rely on DirectX clipping instead of re-implementing clipping.

I've tried turning on clipping to check if that leads to new bugs, but i couldnt notice any new drawing bugs. Instead i found out, that it fixes all drawing bugs in WorldWind that i know of.

Maybe clipping was turned off while debugging something and then forgotten ..

So, unless someone knows good reasons to leave clipping turned off, i would kindly ask you to turn it on.

thx

[Beansprout]

Feel free to come into the chat room - http://chat.worldwindcentral.com - and talk to the devs.

Doesn't look like any are around right now.....normally in a few hours time it gets lively though.

[Nowak]

No software clipping means better performance, but causes problems on some older cards.

[DaoudaW]

Originally posted by Nowak@Apr 3 2005, 11:01 AM
No software clipping means better performance, but causes problems on some older cards.

Quoted post

Is there a way to turn it on without recompiling the whole kit'n'kaboodle?

[millka]

Originally posted by DaoudaW@Apr 5 2005, 01:19 AM
Is there a way to turn it on without recompiling the whole kit'n'kaboodle?

Quoted post

clipping has been turned on in the sources at cvs.

either download and recompile them, or wait for the next regular or beta version.

[millka]

Originally posted by Nowak@Apr 3 2005, 06:01 PM
No software clipping means better performance, but causes problems on some older cards.

Quoted post

I would have expected that, too.
However, i couldnt notice any change in the FPS rate with or without clipping. My graphics card is really ancient (NVidia Riva TNT2) and it doesnt support T+L on the GPU, so on my computer, clipping happens on the FPU. I would be surprised if newer graphic cards show a noticeable slowdown.

[DaoudaW]

Originally posted by millka@Apr 5 2005, 09:55 AM
clipping has been turned on in the sources at cvs.

either download and recompile them, or wait for the next regular or beta version.

Quoted post

In other words, no? :unsure:

[millka]

Originally posted by DaoudaW@Apr 5 2005, 10:53 PM
In other words, no? :unsure:

Quoted post

It might be possible to patch the compiled file, but its way easier to recompile ..

If you dont have MS Visual Studio .NET 2003, there are several other development environments, e.g. SharpDevelop (http://www.icsharpcode.net/OpenSource/SD/).