[osg-users] OpenGL 3.x and OSG

Hi, I managed to compile OSG 3.2 with GL3.h header. In CMAKE, I have checked only OSG_GL3_AVAILABLE . However, when I run osgviewer.exe cow.osg, I get the following problem. Warning: TexGen::apply(State) - not supported. Warning: Material::apply(State) - not supported.

Re: [osg-users] OpenGL 3.x and OSG

Hi, Noted with thanks! Thank you! Cheers, Boon -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=58674#58674 ___ osg-users mailing list osg-users@lists.openscenegraph.org

Re: [osg-users] Grayscale texture

Hi Robert, My team have traced to using hardware generation of mipmaps as the reason why the compressed texture loads slower than uncompressed texture. We do not know the exact reason and have reproduced the same behaviour across NVIDIA and Intel-based GPU on both Linux and Windows system.

Re: [osg-users] Grayscale texture

. Will appreciate if somebody can enlighten me on this. Thanks in advance. Kind Regards, Boon Wah -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=58616#58616 ___ osg-users mailing list osg-users

[osg-users] Speeding up osg::Geometry::drawImplementation

, Boon Wah -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=57927#57927 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users

Re: [osg-users] Speeding up osg::Geometry::drawImplementation

4000 integrated graphics. It appears that it may be unavailable and that is in line with your explanation. Thank you! Regards, Boon Wah -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=57931#57931

[osg-users] Clamping object to top of another object

Hi, I have a special problem where I have a model that is flat planar and I need to clamp onto a terrain with small elevation values. There will be fighting over z-buffer for this two objects. I need to clamp this model on top of the terrain so that there would not be any z-buffer

Re: [osg-users] Grayscale texture

Hi, I notice that glCompressedTexImage2D takes the longest time during texture loading. Can I understand what does this function actually does? I thought the texture decompression is handled by GPU, and loading to GPU actually should be significantly fast. In my testing, uncompress

Re: [osg-users] Grayscale texture

Hi, I tried --compression flag and --compression-dxt1 flag in OSGDEM. However, when I step through OSG when I view the IVE, I noticed that the texture compression all defaults to SCTC-DX1. The size of the compiled textures are the same. Can anybody advise on how to select the ARB

[osg-users] Grayscale texture

Hi, I am compiling a large satellite imaginary using OSGDEM. As I want to reduce the size of the texture to a minimum, I worked only with gray-scale 8-bit satellite imaginary. Is there any way that I can choose a suitable texture format that represents only 8-bit gray-scale

Re: [osg-users] [vpb] Speed of first frame rendering

on the loading time. This pre-cache can actually reduce the latency to load the tile by a few hundred ms which is actually quite crucial for my application. Thanks for advising me. Kind Regards, Boon Wah -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p

Re: [osg-users] [vpb] Speed of first frame rendering

, and it will be beneficial if we could do all these on GPU itself, rather than using CPU memory space. Kind Regards, Boon Wah -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49733#49733 ___ osg-users mailing

[osg-users] [vpb] Speed of first frame rendering

set was provided with a DEM map. What I have found out is that the first set initial load time is much faster (more than 10x) than the second set. Why is this so, even the size of the textures and the number of vertices remain the same for the 2 sets? Thank you! Cheers, Boon Wah

Re: [osg-users] [vpb] Speed of first frame rendering

. My each tile size is around 8MB. For the flat terrain database, the load time is almost instantaneous ( 1s ). Thank you! Cheers, Boon Wah -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49655#49655

Re: [osg-users] Using tesla for scene rendering

Hi, Can I know how did you contact Nvidia over this? I am still trying to get a GL context on a Windows machine for my Tesla M2070Q. Thank you! Cheers, Boon Wah -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=43455#43455

[osg-users] OpenSceneGraph on Blade server with NVIDIA Tesla M2070-Q

is Unable to restore current OpenGL rendering context. Reason: The pixel format is invalid. Is there any way to 'trick' OSG / OpenGL into using the GPU adapter instead? Thanks. Regards, Boon Wah -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p

Re: [osg-users] OpenSceneGraph on Blade server with NVIDIA Tesla M2070-Q

Hi, I am using the Tesla card with a Quadro label. According to forum, there are normal graphics capabilities. As my hardware is blade-class, I had to use this option. Cheers, Boon Wah -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=43097

Re: [osg-users] Question on decreasing latency for database pagers...

Hi, I played with a variety of settings like varying LOD in the viewer, setting bound volume, range during the LOD building process, but is still unable to achieve my goal. In short, I wanted to aggressive load in new tiles with the DatabasePager. In this case, I wanted to pre-load

Re: [osg-users] Question on decreasing latency for database pagers...

to modify the pager such that it caches all my tiles prior to performing rendering? I understand it defeats the purpose of paging, but in this way the loading time of the tiles can be controlled. I hope somebody can guide me in doing this. Thanks for your help. Kind Regards, Boon Wah

Re: [osg-users] Question on decreasing latency for database pagers...

Hi all, Thanks for all of your replies. I will re-look and see how best to optimise my code. Thanks again! Kind Regards, Boon Wah -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=42457#42457

[osg-users] Question on decreasing latency for database pagers...

I will like to ask for some help on decreasing the latency for database pagers. I have basically a fly-pass scene, with the terrain generated by VPB. I require every frame to be generated within a 30ms timing. I note that there are a portion of frames (about 15%, well-spread across) that misses

Re: [osg-users] Question on decreasing latency for database pagers...

my fly-pass. What I wanted to know is how can I do this easily? I am looking at the direction of building a customiser pager to pre-load all the tiles (of course limited by my memory). Kind Regards, Boon Wah -- Read this topic online here: http://forum.openscenegraph.org