Re: [osg-users] Precipitation and VBO
On Mon, Mar 15, 2010 at 9:09 AM, Guy Volckaert guy.volcka...@meggitt.comwrote: As promised, I modified the osgprerender example to include a single instance of the precipitation effect and I was able to reproduce the problem. This sounds exactly like the problem I experienced a while back. Here is a link to the message from the archive: http://www.mail-archive.com/osg-us...@openscenegraph.net/msg06721.html -Farshid ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Precipitation and VBO
As promised, I modified the osgprerender example to include a single instance of the precipitation effect and I was able to reproduce the problem. Guy -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=25686#25686 Attachments: http://forum.openscenegraph.org//files/osgprerender_175.cpp ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Precipitation and VBO
Hi Guy, On Mon, Mar 15, 2010 at 4:09 PM, Guy Volckaert guy.volcka...@meggitt.com wrote: As promised, I modified the osgprerender example to include a single instance of the precipitation effect and I was able to reproduce the problem. I've just tried out the example and it performs fine on my Linux system. I have a mid range ATI graphics card on this system, much lower spec than your hardware so it's pretty likely to be a driver issue. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Precipitation and VBO
mmm, seems like it's happening here too. I get 135fps without the precipitationEffect attached and 1.5 with. I also get what looks like lines instead of drops (see attached). Linux 32-bit with nvidia geforce go 7400, driver 190.53. I'll also test on another machine. jp Guy Volckaert wrote: As promised, I modified the osgprerender example to include a single instance of the precipitation effect and I was able to reproduce the problem. Guy -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=25686#25686 Attachments: http://forum.openscenegraph.org//files/osgprerender_175.cpp ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- This message is subject to the CSIR's copyright terms and conditions, e-mail legal notice, and implemented Open Document Format (ODF) standard. The full disclaimer details can be found at http://www.csir.co.za/disclaimer.html. This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. MailScanner thanks Transtec Computers for their support. inline: precip.jpg___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Precipitation and VBO
J.P. Delport wrote: mmm, seems like it's happening here too. I get 135fps without the precipitationEffect attached and 1.5 with. I also get what looks like lines instead of drops (see attached). Linux 32-bit with nvidia geforce go 7400, driver 190.53. I'll also test on another machine. 32-bit machine with GTS250, same nvidia driver, seems OK. 2200fps without precip, 600fps with and no artifacts as on the 7400Go. jp jp Guy Volckaert wrote: As promised, I modified the osgprerender example to include a single instance of the precipitation effect and I was able to reproduce the problem. Guy -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=25686#25686 Attachments: http://forum.openscenegraph.org//files/osgprerender_175.cpp ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- This message is subject to the CSIR's copyright terms and conditions, e-mail legal notice, and implemented Open Document Format (ODF) standard. The full disclaimer details can be found at http://www.csir.co.za/disclaimer.html. This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. MailScanner thanks Transtec Computers for their support. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Precipitation and VBO
Hi Guy, It sounds like your setup is falling back to software rendering for some reason. The 7950 should be able to handle it just fine so there must be something in the driver or something in your setup. I'm afraid I can't really provide must guidance on what it might be, try other drivers, different pixel formats etc. Robert. On Sat, Mar 13, 2010 at 1:38 AM, Guy Volckaert guy.volcka...@meggitt.com wrote: Hi, I am experiencing VERY bad performance (i.e 1 FPS) when I enable precipitation on my Dell laptop (XPS 1710) that uses a GeForce 7950 graphic card (dell driver version 179.xx). But here's the kicker... the performance is fine when running on any other desktop systems that has a more recent graphic card (for example a 8800 GTX). I kinda understand that it would run faster, but never expecte a drop to 1 FPS on a 7950, especially when there is ABSOLUTELY nothing in the scene. I've reduced my application to the bare minimum to isolate the problem. All I have in my scene graph is a pre- post- camera used to render my scene to a texture (using the render-target-implememtation functions of the osg::camera), and an instance of precipitation effect. I tried using different render-target-implementation technique (like FRAME_BUFFER) but that did not change anything. If I bypass the render-target-implementation (i.e I bypass the osg::camera::attach() method), keep the pre-camera, and remove the post-camera, then everything work fine (running at 60fps). Can someone shed some light on why the the render-target-implementation would affect osg::PrecipitationEffect (or vice-versa). Note: The problem is not the precipitation effect because I compared my implementation with the osg precipitation example and they are the same. When I run the example the frame rate is 60fps (which is the same as my app when I bypass the rendet to target). Cheers, Guy -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=25603#25603 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Precipitation and VBO
I will modify the precipitation example to include a render-target implementation and see if I can reproduce the problem. If I am successful, I will post the example on the forum so that someone can review the implementation. Like you said Rob, I may have a bad setup and I just don't know it. Guy -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=25612#25612 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Precipitation and VBO
Hi, I am experiencing VERY bad performance (i.e 1 FPS) when I enable precipitation on my Dell laptop (XPS 1710) that uses a GeForce 7950 graphic card (dell driver version 179.xx). But here's the kicker... the performance is fine when running on any other desktop systems that has a more recent graphic card (for example a 8800 GTX). I kinda understand that it would run faster, but never expecte a drop to 1 FPS on a 7950, especially when there is ABSOLUTELY nothing in the scene. I've reduced my application to the bare minimum to isolate the problem. All I have in my scene graph is a pre- post- camera used to render my scene to a texture (using the render-target-implememtation functions of the osg::camera), and an instance of precipitation effect. I tried using different render-target-implementation technique (like FRAME_BUFFER) but that did not change anything. If I bypass the render-target-implementation (i.e I bypass the osg::camera::attach() method), keep the pre-camera, and remove the post-camera, then everything work fine (running at 60fps). Can someone shed some light on why the the render-target-implementation would affect osg::PrecipitationEffect (or vice-versa). Note: The problem is not the precipitation effect because I compared my implementation with the osg precipitation example and they are the same. When I run the example the frame rate is 60fps (which is the same as my app when I bypass the rendet to target). Cheers, Guy -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=25603#25603 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
