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This One Is For Chris

Posted: 18.10.2008, 15:40
by BobHegwood
Hi there...
Have noticed a marked discrepancy in the graphics handling abilities between
Celestia 1.5.1 Final and the current Celestia SVN 4493.

I have included the following clickable images so that you may see the problems
inherent with the latest SVN version compared to 1.5.1 Final.
Also, and just FYI, I am using the very latest Nvidia Forceware and drivers.

Christophe's masterful Atlantis under 1.5.1 Final.
Image

Compared with the same model and approximate time/location using Celestia SVN 4493.
Image

Please notice the very jagged edges noticeable in the SVN version. Just thought I'd point this out
prior to the final release of 1.6. Click on each image to get full screen images.

Thanks, Bob

Re: This One Is For Chris

Posted: 18.10.2008, 16:36
by chris
Nothing has changed in Celestia to cause this. In the top image full-scene antialiasing is enabled, and in the bottom one it is not. You can enable it by changing graphics drivers settings or by editing celestia.cfg. Changing celestia.cfg is the preferred method. Just uncomment the line "AntialiasingSamples 4" by removing the initial pound sign.

Some confusion is caused by the fact that there are two types of antialiasing used in Celestia. One is edge antialiasing used for orbits and other lines. The other is full-scene antialiasing, which works on *everything*. Older graphics cards either don't support full-scene antialiasing or run too slowly with it enabled. But, 4x antialiasing is gradually becoming the standard.

--Chris

Re: This One Is For Chris

Posted: 18.10.2008, 19:08
by BobHegwood
chris wrote:Nothing has changed in Celestia to cause this. In the top image full-scene antialiasing is enabled, and in the bottom one it is not. You can enable it by changing graphics drivers settings or by editing celestia.cfg. Changing celestia.cfg is the preferred method. Just uncomment the line "AntialiasingSamples 4" by removing the initial pound sign.

Some confusion is caused by the fact that there are two types of antialiasing used in Celestia. One is edge antialiasing used for orbits and other lines. The other is full-scene antialiasing, which works on *everything*. Older graphics cards either don't support full-scene antialiasing or run too slowly with it enabled. But, 4x antialiasing is gradually becoming the standard.

--Chris

Okay, will give this a try. Sorry, but I thought that I had both of the antialiasing settings exactly the same in both versions.
Thanks very much for the advice. I will take a very much closer look at all settings. :wink:

Re: This One Is For Chris

Posted: 18.10.2008, 19:14
by BobHegwood
That was it, Chris... :)

Sorry for bothering, but maybe someone else can benefit here.
You guys already know that I'm an idiot anyway. :roll: