Re: [osg-users] OsgParticle variables causing objects to disappear
Not to worry, I redesigned the min and max values to give a better looking fire, and now the problem has gone. Still don't know what caused it though, gonna worry about that in the future D: Simon. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=43194#43194 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OsgParticle variables causing objects to disappear
On 10/05/2011 07:26 AM, Simon White wrote: Not to worry, I redesigned the min and max values to give a better looking fire, and now the problem has gone. Still don't know what caused it though, gonna worry about that in the future D: Your problem might have been caused by small feature culling. You can try disabling it: mode = camera-getCullingMode(); camera-setCullingMode(mode ~osg::CullSettings::SMALL_FEATURE_CULLING); --J ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OsgParticle variables causing objects to disappear
Maybe far off, but something I've seen: Do you happen to be working on a mac? We've seen something on one particular graphics card on the mac, where drawing with points sometimes seems to affect clipping on other objects. It seems really weird. I think that when we didn't set the osg::Point state attribute, it didn't happen. And when we turned off clipping, it didn't happen. And it only happened on one particular graphics card on a mac. I didn't look at the near and far settings at the time, but I don't see why that would be affected by the card/driver. andy -Original Message- Not to worry, I redesigned the min and max values to give a better looking fire, and now the problem has gone. Still don't know what caused it though, gonna worry about that in the future D: Simon. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OsgParticle variables causing objects to disappear
Thanks for the input guys. I can't replicate the bug because I replaced the code with working code, but I'll be sure to come back to this thread if it happens again! Andy, I'm afraid I'm working on Windows with an ATI card (Mobility Radeon 3650 to be exact), and I'm not using osg::Point at all! Thanks again, Si. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=43214#43214 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] OsgParticle variables causing objects to disappear
Hi all, I have a class extended from osg::Group called FireEffect, which contains 3 particle systems: a yellow flame, a red flame, and a smoke trail. I also have a truck model in the scene. The truck model and FireEffect object are children of the Root, thus they are siblings in the scenegraph. In my FireEffect I have a variable intensity which modifies the values of things like the particle life, size, rate etc. For some reason, when intensity is certain values is causes the particles and the truck to flicker and disappear completely. Here is the method which is causing problems: http://pastebin.com/RnqtXWRx I have done some debugging and the values I am modifying are not below 0 when the objects disappear. I know the arguments themselves look a bit messy; this is because I've calculated them using straight lines on a graph, giving a nice linear transition from a blazing fire to a smouldering surface. intensity is always between 0.0 and 1.0 and two values which cause the problem are 0.4 and 0.6. Surely it can't be a scene complexity problem because 1.0 works fine, and that is when the most particles are being churned out. It worries me that the truck object disappears, as it is not related to the FireEffect group at all! I should also mention that I have an HUD with several textured planes which all stay visible. The heirarchy: Root - ProjectionMatrix - ModelMatrix - PAT - Geode - Plane for texture I was using osg 2.8.5 but updated to 3.0.0 as a last resort before posting here. Does anybody have any ideas? Thanks in advance, Simon. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=43165#43165 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
