Am Sonntag, den 26.10.2008, 07:51 +0000 schrieb Stuart Buchanan: > LeeE wrote: > > > On Saturday 25 October 2008, Stuart Buchanan wrote: > > > Hi All, > > > > > > After a lot of effort, and help from Tim, I've finally got some > > > 3D shader-based clouds that work acceptably: > > > > > > http://www.nanjika.co.uk/flightgear/clouds.jpg > > > > > > A patch is available from here: > > > http:/www.nanjika.co.uk/flightgear/clouds.tar.gz > > > > > > I've put quite a bit of effort into making the clouds as > > > configurable as possible. The cloudlayers.xml file should allow > > > any cloud-artists to create much prettier clouds than I have > > > managed. > > > > > > There are quite a few bugs to be ironed out:- > > > 3) The alpha-blending isn't working properly > > > > This looks like a z-ordering issue. Is z-ordering used in the cloud > > routines? > > It is, but I'm not sure it is working on the level of individual sprites. The > clouds are in the correct rendering bin (I think), but because of the use > of shaders we currently just render them in an arbitary order within each > cloud. > > I wonder if the problem is the CouldShaderGeometry::drawImplementation(). > Does that seem likely? > I think it is some kind of anti-aliasing problem. The artefacts follow the edges of the clouds, but don't fill the entire texture area (which I would expect). I've exchanged the clouds with plain white Ellipses for testing, but the blue edges remain. I noticed that gimp adds such edges as anti-aliasing, so maybe this is something similar?
> -Stuart > > > > > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > Flightgear-devel mailing list > Flightgear-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/flightgear-devel ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
