Re: [osg-users] OT: Sudden 100x performance drop in glReadPixels
Hi John
Have you investigated the memory consumption when this happens, thinking you
could be starting to hit page file?
Brgs
Ralf
On 16 June 2011 15:06, John Vidar Larring larr...@weatherone.tv wrote:
Hi Sergey,
Thanks for the async reading tip! It gives us a general speed-up, but it
does not fix the issue at hand. But thanks anyway for great community
support!
We used osg::Timer to time the execution of the following calls in the code
you suggested below: glReadPixels, glMapBuffer, memcpy and the total time of
the whole code segment per frame and we got the following results (all
numbers are in milliseconds):
*** PXREAD MAPBUF MEMCPY TOTAL ***
0.038 0.004 7.274 7.316
0.038 0.004 7.262 7.304
0.039 0.004 7.275 7.318
0.037 0.004 7.276 7.317
[...snip... about 20-30 minutes later ...]
0.040.004 7.277 7.321
0.037 0.005 7.293 7.335
0.039 0.004 7.279 7.322
0.038 0.004 7.274 7.316
0.037 81.524 7.285 88.846 --- ???
0.039 802.79 7.253 810.082--- ???
0.039 800.092 7.247 807.378
0.037 802.858 7.269 810.164
0.036 800.102 7.279 807.417
0.036 803.398 7.25810.684
0.038 799.461 7.255 806.754
0.037 802.716 7.247 810
0.038 799.323 7.25806.611
0.037 799.439 7.265 806.741
0.039 803.154 7.248 810.441
[...snip... stays like this until program is terminated]
No Errors, performance just suddenly drops from excellent to a virtual
halt. This is a total mystery to me, and I haven't seen anyone else on the
web posting similar problems... sigh!
So we are trying to come up with theories as to what can potentially hurt
glReadPixels performance (either sync or async) so badly.
Drivers and HW are among the usual suspects, but the client have the same
issue on multiple machines while we are having trouble reproducing, on a
range of similar HW with the same SW, drivers and config.
Are there any odd comination of GL calls than can interrupt/interfere with
glReadPixels?
Again any suggestion or ideas are greatly appreciated?
Best regards,
John
Sergey Kurdakov wrote:
Hi John,
I cannot say, what the problem is,
but the possible solution is to use pbo with glReadPixels so that you read
previous frame - and all reading is async - not slowing app at all
here is a code for you
//somewhere after rendering
glReadBuffer(GL_FRONT);
// get next buffer's index
unsigned int iNextBuffer = (_iCurrentBuffer + 1) % N_MAX_BUFFERS;
// kick of readback of current front-buffer
// into the next buffer
glBindBuffer(GL_PIXEL_PACK_BUFFER, _aPixelBuffer[iNextBuffer]);//bind
pbo1
glReadPixels(0, 0, m_width, m_height, GL_BGRA,
GL_UNSIGNED_BYTE, BUFFER_OFFSET(0));//readback
// map the current buffer containing the
// image read back the previous time around
glBindBuffer(GL_PIXEL_PACK_BUFFER_EXT,
_aPixelBuffer[_iCurrentBuffer]);//bind pbo2
_pPixels = static_castunsigned char
*(glMapBuffer(GL_PIXEL_PACK_BUFFER, GL_READ_ONLY));
if(_pPixels)
{
//something like:
memcpy(image,_pPixels,m_width*m_height*4);
// unmap the buffer
if (!glUnmapBuffer(GL_PIXEL_PACK_BUFFER))
{
std::cerr Couldn't unmap pixel buffer. Exiting\n;
assert(false);
}
}
// unbind readback buffer to not interfere with
// any other (traditional) readbacks.
glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
// make next-buffer the current buffer
_iCurrentBuffer = iNextBuffer;
glReadBuffer(GL_BACK);
make sure you have inited buffers
glGenBuffers(N_MAX_BUFFERS, _aPixelBuffer);
for (unsigned int iBuffer = 0; iBuffer N_MAX_BUFFERS; ++iBuffer)
{
glBindBuffer(GL_PIXEL_PACK_BUFFER, _aPixelBuffer[iBuffer]);
glBufferData(GL_PIXEL_PACK_BUFFER, m_width*m_height*4, NULL,
GL_STATIC_READ);
errorcode = glGetError();
} glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
and that you delete them after use
glBindBufferARB(GL_PIXEL_PACK_BUFFER_EXT, 0);
glDeleteBuffersARB(N_MAX_BUFFERS, _aPixelBuffer);
Regards
Sergey
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Re: [osg-users] [vpb] terrain in meters
Hi Vijeesh The database will us the same format as the input data, unless you specify a different output format. In general its better to transform your data to the desired format first using a tool like gdal. If you want flat terrains in meters UTM projections are probably the best option. Brgs. Ralf On 6 April 2011 07:35, Vijeesh Theningaledathil vije...@nal.res.in wrote: Hi, Is it possible to generate the database in meter(cartesian coordinates rather than lat lon degrees)? Thank you! Cheers, Vijeesh -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=38240#38240 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Ralf Stokholm Director RD Email: a...@arenalogic.com Phone: +45 28 30 83 52 Web: www.arenalogic.com This transmission and any accompanying documents are intended only for confidential use of the designated recipient(s) identified above. This message contains proprietary information belonging to Arenalogic Aps. If you have received this message by error, please notify the sender. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [vpb] coordinate system in terrain
Hi Im not an expert on the output of gdalinfo, but it looks like your files are lat lon, from what i know they should be able to generate an ECEF terrain model. The first thing I would do is to use ogsviewer to view the file, here you should see a globe, or part of a globe, if you dont something in your osgdem generation is not working. For Delta I have no experience in using non UTM maps for delta, I would start trying to load it in Stage and see if its possible to place objects from there, but others might have some experience with global models for Delta. Brgs. Ralf On 25 February 2011 08:49, Vijeesh Theningaledathil vije...@nal.res.inwrote: Hi, Thanks Mr. Ralf. But from the output of gdalinfo, how can i say that it is flat earth or round earth. In my first post i had pasted the output of gdalinfo for the source files. My problem is I'm not able to render the terrain generated from the above source files using any of the IG(subrscene, delta3d). Can you tell me which IG is best suitable to render the terrain. And I need to know the origin lat lon if its a flat earth. I used osgdem to generate my terrain with --geocentric option. Thank you! Cheers, Vijeesh -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=37119#37119 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Ralf Stokholm Director RD Email: a...@arenalogic.com Phone: +45 28 30 83 52 Web: www.arenalogic.com This transmission and any accompanying documents are intended only for confidential use of the designated recipient(s) identified above. This message contains proprietary information belonging to Arenalogic Aps. If you have received this message by error, please notify the sender. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Multithreading
Hi List Im currently working on getting my application, build on Delta3d working with osg multithreading. In singlethreading everything works fine but multithreading modes fail. Is there any documentation og other sources of information on what to do / awoid doing at different times in the application loop when working with multiple render context in a multithreaded osg app? Im on windows btw. Brgs. -- Ralf Stokholm Director RD Email: a...@arenalogic.com Phone: +45 28 30 83 52 Web: www.arenalogic.com This transmission and any accompanying documents are intended only for confidential use of the designated recipient(s) identified above. This message contains proprietary information belonging to Arenalogic Aps. If you have received this message by error, please notify the sender. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Multithreading
Hi Robert Thanks for your time About the fail, it depends a bit on how I start my application, if I set realizeUponCreate=false the application fails when Delta attempts to start their CEGUI implementation. So I use RealizeUponCreate=true and I have added a osg::ThreadingHandler to allow me to make the switch at runtime. When I make the switch at runtime the following errors are output, and they keep comming. This also happen when doing the same on really simple delta3d examples like . 170: [Screen #0] GraphicsWindowWin32::makeCurrentImplementation() - Unable to se t current OpenGL rendering context. Reason: The requested resource is in use. Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,) Warning: detected OpenGL error 'invalid operation' at end of SceneView::draw() Warning: detected OpenGL error 'invalid operation' after applying attribute View port 02C4ED48 Warning: detected OpenGL error 'invalid operation' after applying GLMode 0xc11 Warning: detected OpenGL error 'invalid operation' at start of State::apply(Stat eSet*) Warning: detected OpenGL error 'invalid operation' after applying GLMode 0xb50 Warning: detected OpenGL error 'invalid operation' after applying GLMode 0xb71 Warning: detected OpenGL error 'invalid operation' after applying GLMode 0xc11 Warning: detected OpenGL error 'invalid operation' after applying GLMode 0x4000 Warning: detected OpenGL error 'invalid operation' after applying attribute Mate rial 02C4E678 Warning: detected OpenGL error 'invalid operation' after applying attribute Ligh tModel 02C4D4C0 Warning: detected OpenGL error 'invalid operation' after applying attribute Blen dFunc 02C4E520 Warning: detected OpenGL error 'invalid operation' after applying attribute Colo rMask 1D0B9248 Warning: detected OpenGL error 'invalid operation' after applying attribute Dept h 1CFBD9B8 Warning: detected OpenGL error 'invalid operation' after applying GLMode 0xde1 Warning: detected OpenGL error 'invalid operation' after applying attribute Text ure2D 1C5B95B0 Warning: detected OpenGL error 'invalid operation' after applying attribute TexE nv 02C4E808 Warning: detected OpenGL error 'invalid operation' at end of State::apply(StateS et*) Warning: detected OpenGL error 'invalid operation' at start of State::apply(Stat eSet*) Brgs. Ralf Stokholm On 25 February 2011 13:20, Robert Osfield robert.osfi...@gmail.com wrote: Hi Ralf, Could you explain by what you mean by fail? In terms of docs, the topic of threading has been discussed many times of osg-users list/forum so is probably your best source of information. Use of multi-threading isn't typically that complicated, just enable it and that avoid modifying data when it's being read by one of the other threads. The most common problem when multi-threading is using update callbacks on drawables or state that modified while the draw traversal is still running. This can happen when using the DrawThreadPerContext or CullThreadCameraDrawThreadPerContext threading models. The way to prevent these problems is to simply set the DataVariance on the StateSet or Drawable leaves to DYNAMIC, which tells the draw traversal to hold back the next frame till all the dynamic objects are dispatched. Robert. On Fri, Feb 25, 2011 at 11:57 AM, Ralf Stokholm alfma...@arenalogic.com wrote: Hi List Im currently working on getting my application, build on Delta3d working with osg multithreading. In singlethreading everything works fine but multithreading modes fail. Is there any documentation og other sources of information on what to do / awoid doing at different times in the application loop when working with multiple render context in a multithreaded osg app? Im on windows btw. Brgs. -- Ralf Stokholm Director RD Email: a...@arenalogic.com Phone: +45 28 30 83 52 Web: www.arenalogic.com This transmission and any accompanying documents are intended only for confidential use of the designated recipient(s) identified above. This message contains proprietary information belonging to Arenalogic Aps. If you have received this message by error, please notify the sender. ___ 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 -- Ralf Stokholm Director RD Email: a...@arenalogic.com Phone: +45 28 30 83 52 Web: www.arenalogic.com This transmission and any accompanying documents are intended only for confidential use of the designated recipient(s) identified above. This message contains proprietary information belonging to Arenalogic Aps. If you have received this message by error, please notify the sender
Re: [osg-users] Multithreading
Hi Robert I understand that this is really a Delta3d issue, that is why I was more looking for general information on the differences between the singlethreaded and multithreaded renderloops. Thanks for your time. /Ralf On 25 February 2011 14:49, Robert Osfield robert.osfi...@gmail.com wrote: Hi Ralf, As far as I know CEGUI is not thread safe or able to handle multiple graphics contexts so it may well be that you can't use multi-threading in conjunction with the GUI. You'll need to discuss this with the Delta3D team as these type of issues are likely to be very specific to Delta3D rather than the OSG. Robert. On Fri, Feb 25, 2011 at 1:40 PM, Ralf Stokholm alfma...@arenalogic.com wrote: Hi Robert Thanks for your time About the fail, it depends a bit on how I start my application, if I set realizeUponCreate=false the application fails when Delta attempts to start their CEGUI implementation. So I use RealizeUponCreate=true and I have added a osg::ThreadingHandler to allow me to make the switch at runtime. When I make the switch at runtime the following errors are output, and they keep comming. This also happen when doing the same on really simple delta3d examples like . 170: [Screen #0] GraphicsWindowWin32::makeCurrentImplementation() - Unable to se t current OpenGL rendering context. Reason: The requested resource is in use. Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,) Warning: detected OpenGL error 'invalid operation' at end of SceneView::draw() Warning: detected OpenGL error 'invalid operation' after applying attribute View port 02C4ED48 Warning: detected OpenGL error 'invalid operation' after applying GLMode 0xc11 Warning: detected OpenGL error 'invalid operation' at start of State::apply(Stat eSet*) Warning: detected OpenGL error 'invalid operation' after applying GLMode 0xb50 Warning: detected OpenGL error 'invalid operation' after applying GLMode 0xb71 Warning: detected OpenGL error 'invalid operation' after applying GLMode 0xc11 Warning: detected OpenGL error 'invalid operation' after applying GLMode 0x4000 Warning: detected OpenGL error 'invalid operation' after applying attribute Mate rial 02C4E678 Warning: detected OpenGL error 'invalid operation' after applying attribute Ligh tModel 02C4D4C0 Warning: detected OpenGL error 'invalid operation' after applying attribute Blen dFunc 02C4E520 Warning: detected OpenGL error 'invalid operation' after applying attribute Colo rMask 1D0B9248 Warning: detected OpenGL error 'invalid operation' after applying attribute Dept h 1CFBD9B8 Warning: detected OpenGL error 'invalid operation' after applying GLMode 0xde1 Warning: detected OpenGL error 'invalid operation' after applying attribute Text ure2D 1C5B95B0 Warning: detected OpenGL error 'invalid operation' after applying attribute TexE nv 02C4E808 Warning: detected OpenGL error 'invalid operation' at end of State::apply(StateS et*) Warning: detected OpenGL error 'invalid operation' at start of State::apply(Stat eSet*) Brgs. Ralf Stokholm On 25 February 2011 13:20, Robert Osfield robert.osfi...@gmail.com wrote: Hi Ralf, Could you explain by what you mean by fail? In terms of docs, the topic of threading has been discussed many times of osg-users list/forum so is probably your best source of information. Use of multi-threading isn't typically that complicated, just enable it and that avoid modifying data when it's being read by one of the other threads. The most common problem when multi-threading is using update callbacks on drawables or state that modified while the draw traversal is still running. This can happen when using the DrawThreadPerContext or CullThreadCameraDrawThreadPerContext threading models. The way to prevent these problems is to simply set the DataVariance on the StateSet or Drawable leaves to DYNAMIC, which tells the draw traversal to hold back the next frame till all the dynamic objects are dispatched. Robert. On Fri, Feb 25, 2011 at 11:57 AM, Ralf Stokholm alfma...@arenalogic.com wrote: Hi List Im currently working on getting my application, build on Delta3d working with osg multithreading. In singlethreading everything works fine but multithreading modes fail. Is there any documentation og other sources of information on what to do / awoid doing at different times in the application loop when working with multiple render context in a multithreaded osg app? Im on windows btw. Brgs. -- Ralf Stokholm Director RD Email: a...@arenalogic.com Phone: +45 28 30 83 52 Web: www.arenalogic.com This transmission and any accompanying documents are intended only for confidential use of the designated recipient(s) identified above. This message contains proprietary information belonging
Re: [osg-users] [vpb] coordinate system in terrain
Hi Vijeesh Is it the source data or your generated terrain you wish to id? If its your source data you can use gdalinfo.exe it will output information on the projection of your source data, your generated terrain will be in the same projection unless you specify something else. If you generate a ive binary terrain you can use osgconv to convert the root terrain file to .osg you can then inspect this using a text editor. the root file contains a coordinate system node detailing the coordinate system the terrain is using. brgs Ralf On 25 February 2011 07:56, Vijeesh Theningaledathil vije...@nal.res.inwrote: Hi Shayne Thanks. But still I cannot make out how to differentiate between flat earth and ECEF. Is there anything we can check to identify? Thank you! Cheers, Vijeesh -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=37117#37117 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Ralf Stokholm Director RD Email: a...@arenalogic.com Phone: +45 28 30 83 52 Web: www.arenalogic.com This transmission and any accompanying documents are intended only for confidential use of the designated recipient(s) identified above. This message contains proprietary information belonging to Arenalogic Aps. If you have received this message by error, please notify the sender. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] CPU usage
Hi Niel I have not tried this myself, but I remember that support was added for manually handling the render loop. OSG will default to a render loop that follows your screen refresh, and if this is forced off it will redraw as fast as possible. But i think there is support for handling when to initiate the redraw from within your application. If you do this CPU usage should go down drastically if you don't have to redraw often. There should be some discussion of this on the mailing list, but I don't have a link so you will have to do the digging yourself. Brgs. Ralf Stokholm http://www.arenalogic.com On 19 February 2011 19:15, Neil Neilson n...@nlneilson.com wrote: Hi, What can be done to reduce CPU usage when the image is not being changed/updated? After trying the examples using a pre-built 2.9.9 and the latest from the SVN built with VS10 the CPU usage is high. On a dual core one is nearly max and the other core is minimal. With an app that much of the time may only call for an update or redraw once a second then it seems a double buffer could display the stationary image with minimal CPU. This is something I have not had to tinker with since what I have used before this was build into the SDKs. I am new to OSG (and osgEarth) so this issue may have been brought up before but could not find it. Thank you! Cheers, Neil -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=36859#36859 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Ralf Stokholm Director RD Email: a...@arenalogic.com Phone: +45 28 30 83 52 Web: www.arenalogic.com This transmission and any accompanying documents are intended only for confidential use of the designated recipient(s) identified above. This message contains proprietary information belonging to Arenalogic Aps. If you have received this message by error, please notify the sender. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Hiding and Showing a Node with Key Press
node()-setNodeMask(visible ? ~0 : 0); should do it On 18 February 2011 19:45, Ross Lance ross.la...@gmail.com wrote: All, I am trying to setup a keyboard event to toggle a particular node on and off. I am not sure if I should use osg::Switch node or node masks? Any suggestions or examples you could point me to? Thanks, Ross ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Ralf Stokholm Director RD Email: a...@arenalogic.com Phone: +45 28 30 83 52 Web: www.arenalogic.com This transmission and any accompanying documents are intended only for confidential use of the designated recipient(s) identified above. This message contains proprietary information belonging to Arenalogic Aps. If you have received this message by error, please notify the sender. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OSG seems to have a problem scaling to multiple windows on multiple graphics cards
are using OSG 2.8.3. We are having a heck of a hard time getting OSG to take advantage of our multiple graphics cards. Help! Here's what we did: If we load a fairly large model into our test program we can get a frame rate of about 150 FPS when displaying in a single window. (2) We are running single-threaded, and assign to a specific core. When we background this and run a second copy of the program to another graphics card and core then both programs run at 150 FPS. Same thing for running three and four copies at once. That is, four processes using four graphics cards on four cores run just as fast as a single process. All four cores are at near 100% CPU utilization according to top. So far, so good. Now we modify the program to load the model and create multiple windows on multiple cards. There's one window per card and each uses a different core. (3) The threading model is CullThreadPerCameraDrawThreadPerContext, the default chosen by OSG. The environment variable OSG_SERIALIZE_DRAW_DISPATCH is not set, so it defaults to ON, which we think means draw in serial. If we draw to four windows on four different cards we get about 36 FPS. There are four different cores being used, and each has about 25% of the CPU. This probably this makes sense as the draws are in serial. 150 FPS/4 is about 36 FPS. As expected, we get nearly identical results if we create four windows on a single card using four different cores. If we set OSG_SERIALIZE_DRAW_DISPATCH=OFF we hope to see better performance, but with four windows on four graphics cards we only get 16 FPS! There are four different cores bring used, one at about 82%, and the other three at 75%, but what are they doing? Again, we get nearly identical results if using four windows on a single card. So How can we get OSG to draw to four windows on four cards in one process as fast as running four separate processes? Any pointers or suggestions are welcome. Thanks, John 1 - Our immersive system consists of 3 projectors and a console each driven by an Nvidia FX5800 graphics card all genlocked for 3D stereo display. The four graphics cards are in two QuardoPlex Model D2 units connected to the host. The host computer is an 8 core Dell Precision T5400 running 64 bit Linux (CentOS 5.5). We are using Nvidia driver version 195.36.24 2 - the program is attached- it uses only OSG. We run our tests with _GL_SYNC_TO_VBLANK=0 to get the maximum frame rate. 3 - one graphics context per window and one camera per window ___ 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 -- Ralf Stokholm Director RD Email: a...@arenalogic.com Phone: +45 28 30 83 52 Web: www.arenalogic.com This transmission and any accompanying documents are intended only for confidential use of the designated recipient(s) identified above. This message contains proprietary information belonging to Arenalogic Aps. If you have received this message by error, please notify the sender. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Custom file type loading?
Hi Peter I have no personal experience with this, but from my understanding the most correct pattern would be to add a new plugin for your file type. Take a look at the way other files are handled either images like bmp's or models. Brgs. Ralf Stokholm On 18 March 2010 09:06, Peter Bear th3fly...@gmail.com wrote: Hi, I was wondering if anyone would be able to point me in the right direction as to how to add support to load custom file types not currently supported by OSG. I've been looking for a while and haven't turned much up that appears to be of use. Thank you! Cheers, Peter -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=25780#25780 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Ralf Stokholm Director RD Email: a...@arenalogic.com Phone: +45 28 30 83 52 Web: www.arenalogic.com This transmission and any accompanying documents are intended only for confidential use of the designated recipient(s) identified above. This message contains proprietary information belonging to Arenalogic Aps. If you have received this message by error, please notify the sender. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgText quality issue
Hi Im not sure if this is the last time it was changed, but inspecting the log it was changed a revision 6602 from unsigned int sizeAdjustment = 0; // was 1. to unsigned int sizeAdjustment = 1; With the following comment: *Reorganised the managment of margins around glyphs so that is done entirely with src/osgText/Font.cpp rather than the font plugins or Text.cpp* ** Not really sure why, but I couldent help looking for it so I might as well share. Brgs. Ralf Stokholm 2010/3/18 Mathias Fröhlich m.froehl...@science-computing.de Hi, On Wednesday 17 March 2010, Farshid Lashkari wrote: I'm in the process of porting our application from OSG 1.2 to 2.9. One major issue that immediately stood out was the quality of osgText. All the letters seem to be cut off by one pixel along the edges. There has been a lot of changes since 1.2, but I did find one setting that seemed to fix the issue for me. On line 539 of Font.cpp there is a hard-coded variable called sizeAdjustment that is set to 1. In OSG 1.2 this value was set to 0. Changing this value back to 0 pretty much resolves the quality issue for me. I've attached a screenshot comparing the result of changing the value. Does anybody else notice these artifacts? Is there a downside to changing the sizeAdjustment value back to 0? Any insight is appreciated. Yes, I was coding around that in the QFont implementation by an own margin that appeared to fix that problem. That left the original reason on the todo list ... Glad to see that we know where this happens. Greetings Mathias -- Dr. Mathias Fröhlich, science + computing ag, Software Solutions Hagellocher Weg 71-75, D-72070 Tuebingen, Germany Phone: +49 7071 9457-268, Fax: +49 7071 9457-511 -- Vorstand/Board of Management: Dr. Bernd Finkbeiner, Dr. Roland Niemeier, Dr. Arno Steitz, Dr. Ingrid Zech Vorsitzender des Aufsichtsrats/ Chairman of the Supervisory Board: Michel Lepert Sitz/Registered Office: Tuebingen Registergericht/Registration Court: Stuttgart Registernummer/Commercial Register No.: HRB 382196 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Ralf Stokholm Director RD Email: a...@arenalogic.com Phone: +45 28 30 83 52 Web: www.arenalogic.com This transmission and any accompanying documents are intended only for confidential use of the designated recipient(s) identified above. This message contains proprietary information belonging to Arenalogic Aps. If you have received this message by error, please notify the sender. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Best way to limit/scissor a render surface
Hi All I have been trying two ways to prevent the rendering of a branch from exceeding a predefined display area. The display area could represent a radar screen and I want the symbols of the screen to be clipped if it is outside the screen area. I have tried using clip planes, which works. But I had a lot of problems with conflicts with already active clip planes and the limit to about 6 or 8 clip planes in OpenGL. It also seams a bit overkill to have to use a clip plane to limit simple 2D rendering. I then switched to using scissors, this works as well, but I'm having problems adjusting the scissor rect, which is relative to the current window to my display which is relative to a specific view shown in that screen. How are other people doing this? will view ports and a specific camera or other tricks present a better solution? Brgs. -- Ralf Stokholm Director RD Email: a...@arenalogic.com Phone: +45 28 30 83 52 Web: www.arenalogic.com This transmission and any accompanying documents are intended only for confidential use of the designated recipient(s) identified above. This message contains proprietary information belonging to Arenalogic Aps. If you have received this message by error, please notify the sender. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Please Help with Setup
Hi Jacob Not sure why you are hawing problems with your setup, im using vs2008 but it shouldent make much difference comparred to vs2005. You could try downloading vs2008 express though I have successfully build using the express versions. Anyway I have a folder called scenerygenerator in my svn with the following svn externals osg http://www.openscenegraph.org/svn/osg/OpenSceneGraph/tags/OpenSceneGraph-2.8.2 osgdata http://www.openscenegraph.org/svn/osg/OpenSceneGraph-Data/tags/OpenSceneGraph-Data-2.8.0 3rdPartysvn https://osgtoy.svn.sourceforge.net/svnroot/osgtoy/3rdParty/branches/3rdParty_win32binaries_vs80sp1 osgdem http://www.openscenegraph.org/svn/VirtualPlanetBuilder/tags/VirtualPlanetBuilder-0.9.10 From there on I use scripts for building osg, with little modefication they should work for you as well. I use FWtools for gdal etc, install FWtools 2.4.6 or edit the script to whatever you use. same goes for your visual studio stuff. The put the following in a build script in the folder you set the svn externals on, then is should build :-) when not let me know. ## setlocal SET AX=%CD% if exist C:\Program Files set PGM_FILES=C:\Program Files if exist C:\Program Files (x86) set PGM_FILES=C:\Program Files (x86) SET OSG_SOURCE_DIR=%AX%\osg SET OSG_DIR=%AX%\osgbuild SET OSG_INCLUDE_DIR=%AX%\osg\include;%AX%\osgbuild\include SET INCLUDE=%INCLUDE%;%OSG_INCLUDE_DIR% ::Call environment variables script call %PGM_FILES%\Microsoft Visual Studio 9.0\VC\vcvarsall.bat x86 ::call %PGM_FILES%\Microsoft Platform SDK for Windows Server 2003 R2\SetEnv.Cmd /XP32 :OSG @echo @echo @echo # Building openSceneGraph @echo @echo if not exist ./osgbuild md osgbuild pushd osgbuild cmake -debug-output ..\osg -G Visual Studio 9 2008 -DWIN32_USE_MP:BOOL=ON -DFREETYPE_INCLUDE_DIR_ft2build=%AX%\3rdParty\include -DFREETYPE_INCLUDE_DIR_freetype2=%AX%\3rdParty\include -DFREETYPE_LIBRARY=%AX%\3rdParty\lib\freetype237.lib -DCMAKE_BUILD_TYPE=Release vcbuild /useenv OpenSceneGraph.sln Release|Win32 ::vcbuild /useenv OpenSceneGraph.sln Debug|Win32 popd ::goto END :VPB @echo @echo @echo # Building VirtualPlanetBuilder @echo @echo if not exist ./osgdembuild md osgdembuild pushd osgdembuild cmake -debug-output ..\osgdem -G Visual Studio 9 2008 -DCURL_INCLUDE_DIR=%AX%\3rdParty\include -DCURL_LIBRARY=%AX%\3rdParty\lib\curllib.lib -DGDAL_LIBRARY=%PGM_FILES%\FWTools2.4.6\lib\gdal_i.lib -DGDAL_INCLUDE_DIR=%PGM_FILES%\FWTools2.4.6\include -DCMAKE_BUILD_TYPE=Release vcbuild /useenv VIRTUALPLANETBUILDER.sln Release|Win32 ::vcbuild /useenv VIRTUALPLANETBUILDER.sln Debug|Win32 popd :END endlocal ### Brgs. Ralf Stokholm www.arenalogic.com 2009/11/15 Chris 'Xenon' Hanson xe...@alphapixel.com Jacob Armstrong wrote: Thanks for the response, Chris! I would definitely like to discuss this further, and I think a phone call would help out tremendously. Would I be able to reach you at that phone number during the week? Certainly. I'm not sure what I can do as far as the remote-desktop assistance, that would be up to my manager. The link you provided worked in my web browser, so I could manually download everything if need-be, right? I've never tried that, and I don't know how that would work. You really do want to have Subversion operating correctly though, to stay on top of bug fixes. The only problem I would have after that is setting up the VirtualPlanetBuilder directories so they play with the OSG, if I even need that. You will need that. The only thing I'm really using out of the entire product is OSGDem, which I understand is in VPB now. Do I really need OSG to be able to run VPB? You need OSG to build VPB, and to run VPB/OSGDEM. If so, then I'm not sure how to set them both up, with dependencies so they work together. My availability is pretty limited today as well, and I'm actually traveling for work this week, so I'm not sure when I'll be able to phone you if you're still available after today. Well, get in touch when you're ready to discuss it. Thanks, Jake -- Chris 'Xenon' Hanson, omo sanza lettere Xenon AlphaPixel.com PixelSense Landsat processing now available! http://www.alphapixel.com/demos/ There is no Truth. There is only Perception. To Perceive is to Exist. - Xen ___ 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
Re: [osg-users] Databasepager + multiple views + different camera positions = memory leak?
Hi All Just wantet to add that we are also using Delta3d and as a consequence we are using the composite viewer. Brgs. Ralf Stokholm 2009/10/8 Michael Bach Jensen mich...@ifad.dk Hello everyone, We are having the exact same problem at our company for quite some time (currently on osg 2.8.0 via Delta3D and using TerraPage terrains). I have verified that viewing the terrain in the osgViewer works fine, but in our app, which also uses multiple cameras, the memory-keeps-growing-until-crash issue occurs when the cameras are not looking at the exact same thing (have the same projection and view matrices with the same LOD scale). The more different they are, the easier it is to trigger the issue, it seems. What we did to work around the issue, is to make sure that no two cameras in the graph render the same PagedLOD node. That is, we load the terrain multiple times using osgDB::readNodeFile and point each camera to each instance. I hope this helps on shedding some light on what is going on. Additional info: Delta3D design currently limits OSG to single-threaded mode. I am on WindowsXP, using an NVidia card, not that I think that makes a difference. I also seem to recall, that the active lod node list in the pager starts to grow rapidly when I put the second camera into the scene graph at runtime. Cheers, Michael -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=18075#18075 ___ 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] Databasepager + multiple views + different camera positions = memory leak?
Hi Sergey Im afraid I dont have an answer, but I can back up your observations. We are using two cameras for our application one for a standard view the other for an IR targeting POD. The two cameras are looking in opposite directions and have different lodscales. I have also notised that the memmory usage keeps rising untill the app chrashes and that this will happen faster if the IR camera is zoomed with according lodscale. I have tried various settings for the database pager, but the problem remains. Brgs. Ralf Stokholm 2009/10/7 sergey leontyev sleon...@ist.ucf.edu Hello, (i am using OSG 2.8.2) Let me try to explain the problem : I have a big database (TerraPage). I load it into my application. I have two views (cameras) within a window and i can position each camera individually looking directly down at the terrain ( I am using orthographic projection ). If I move 2 cameras to an identical location everything is fine, and I can keep moving them to the same position. However, when i move them to a different locations ( looking at different tiles i presume). The memory usage starts to increase at about 0.5mb per second and never stops. It seems to only happen when i use setViewAsLookAt which changes the modelview matrix. I used to move around the map using the ortographic projection matrix(by setting left and right top and bottom params) i have never noticed the memory increase. In other words it seems that having 2 views with cameras positioned in different places break something in the databasepager. I have tried playing with some settings such setTargetMaximumNumberOfPageLOD or calling clear on the database pager. Does anyone have or had similar issues? I have no idea how to debug this. Is what i am saying possible? and the databsepager has a bug? Does anyone have any ideas? How to debug this? How to rule out the that there is a bug in databasepager? Any help or advices are appreciated. Thanks! Sergey -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=17989#17989 ___ 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] Databasepager + multiple views + different camera positions = memory leak?
Hi Robert Unfortunatly I cant upgrade to trunk without a considerable effort, so that wont happen right now. But the texture pools looks really interesting with regards to large paged terrains. I doubt if its a driver thing directly, as Im able to run osgviewer on the same dataset without problems, if i for instance move far away from the terrain memmory will drop etc. If I do the same in my application moovi both cameras far away from the paged data wont result in the same drom in mommory consumption. These observations are done in windows task mgr so they might not be completely valid, but the end result is that if i fly back and fourth usin the viewer it will never chrash, if I do it using my application it will eventually chrash, this might well be me screwing up somewhere else but it supports the observations Sergey are making. Database is VPB database app 500 Gig OSG 2.8.2 Windows vista and XP Nvidia GTX280 Graphics latest drivers. I was wondering if somthing in the database pager is preventing the release like a copy of a refptr or similar? Brgs Ralf 2009/10/7 Robert Osfield robert.osfi...@gmail.com HI Sergey and Ralf, I haven't seen this behavior in the DatabasePager before, and it might not be directly related to the DatabasePager at all. The DatabasePager itself doesn't actually know anything about cameras, it just handles requests made to it from the cull traversals. The code for handling the requests is thread safe so there should be no problem with having multiple cameras making multiple requests. If you do have multiple cameras then you will naturally be requiring more data to be loaded into memory, and less data will able to be expired than normal. Whether this can explain the growth in memory you are seeing I would doubt though. Perhaps the OpenGL drivers is playing tricks. If you can try your app on a different OS/driver/hardware combination to see if the same behavior exists. Another thing you could try is the svn/trunk version of the OSG as it now contains and texture and buffer object pool mechanism that you can turn on that will keep a lid on how much OpenGL memory you're app is using and might just be what you need. Robert. ___ 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] Paged LOD for osg terrain
Hi Brett Osg paged lod is basically implemented as the name states, there are a pagedLod node in your model that will spawn a load of the nodes below it when it gets close enough to the camera and is inside the view frustum. I guess the technique is quite similar to a standard LOD node except for that the nodes need to be loaded in from the disk. The actual loading of the nodes are done an a separate thread so there is a mechanism for synchronising when a given data set that has been requested is made available for rendering. From your question it sounds like you are looking for some a more thesis type algorithm for handling LOD, there is no such thing for paged lod, as it is basically just a mechanism for asynchronously loading parts of a large model. Brgs. Ralf Stokholm www.arenalogic.com 2009/9/24 Brett Thomas Lee brettle...@hotmail.com Hi, All I want is the technique description since there are lot of LOD techniques out there.Based on which technique is osg LOD is based on???Any papers?? Thank you! Cheers, Brett -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=17606#17606 ___ 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] osg DIS (Distributed Interactive Simulation)
Hi All If you need a distributed simulation based on OSG I can recommend Delta3d which has already integrated HLA RPRFOM (works with RTI-s MÄK Pitch Portico and CERTI) and also DIS based on OpenDIS. Brgs. Ralf Stokholm Arenalogic www.arenalogic.com 2009/8/25 Tomlinson, Gordon gtomlin...@overwatch.textron.com And don't forget HLA :) ( http://en.wikipedia.org/wiki/High_Level_Architecture_(simulation)) as this has depreicated DIS for many :) *Gordon Product Manager 3d *__ *Gordon Tomlinson **Email * : gtomlinson @ overwatch.textron.com __ -- *From:* osg-users-boun...@lists.openscenegraph.org [mailto: osg-users-boun...@lists.openscenegraph.org] *On Behalf Of *Maxim Gammer *Sent:* Tuesday, August 25, 2009 5:57 AM *To:* OpenSceneGraph Users *Subject:* Re: [osg-users] osg DIS (Distributed Interactive Simulation) Hi, what's wrong with CERTI or PORTICO? 2009/8/25 Trajce Nikolov nikolov.tra...@gmail.com Hello community, are you interested in opensource crossplatform DIS library? cheers, Nick http://www.linkedin.com/in/tnikolov Sent from Benoni, Gauteng, South Africa ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Maxim Gammer ___ 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
[osg-users] osgPresentation missing CmakeList.txt file
Hi Rober / List It seams there is a missing CMakeList.txt file in the osgPresentation folder that causes trunk build to fail Brgs. Ralf Stokholm ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgPresentation missing CmakeList.txt file
Hi Robert That part works now btw but seams this on is missing as well. Cannot open include file: 'osgPresentation/Export': I will be on osg and vpb trunk testing VPB stuu for the nexe release btw. Will put in some more information in the proper thread later. Brgs. Ralf 2009/6/25 Robert Osfield robert.osfi...@gmail.com Hi Ralf, Sorry about this, missed the svn add for the CMakeLists.txt when I checked the rest of the changes in. I've now checked in the src/osgPresentation/CMakeLists.txt. Robert. On Thu, Jun 25, 2009 at 7:33 AM, Ralf Stokholmalfma...@arenalogic.com wrote: Hi Rober / List It seams there is a missing CMakeList.txt file in the osgPresentation folder that causes trunk build to fail Brgs. Ralf Stokholm ___ 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 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgPresentation doesn't build on the SVN
Hi Robert I still get a heap of linker errors. Have my nose in something else so I havent investigated it further. Log attached. Brgs. Ralf 2009/6/25 Robert Osfield robert.osfi...@gmail.com Hi Serge, Sorry about this, a copy and paste error in the CMakeLists.txt looks to have foiled the export of symbols. I've now fixed this error could you do an svn update and let me know how you get on. Robert. On Thu, Jun 25, 2009 at 6:11 PM, Serge Lagesserge.la...@gmail.com wrote: Hi Robert, On the SVN, osgPresentation doesn't build (lots of linking errors, see the attached file). I am under Windows Xp. Cheers, -- Serge Lages http://www.tharsis-software.com ___ 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 Setting environment for using Microsoft Visual Studio 2008 x86 tools. # Building openSceneGraph -- searching TIFF --tiff.h--libtiff--C:/SVN/va/SceneryBuilder/3rdparty-- -- searching FREETYPE --ft2build.h--freetype;freetype234;freetype234MT;freetype235;freetype237--C:/SVN/va/SceneryBuilder/3rdparty-- -- searching CURL --curl/curl.h--libcurl;curllib--C:/SVN/va/SceneryBuilder/3rdparty-- -- searching JPEG --jpeglib.h--libjpeg--C:/SVN/va/SceneryBuilder/3rdparty-- -- searching GLUT --GL/glut.h--glut32--C:/SVN/va/SceneryBuilder/3rdparty-- -- searching GIFLIB --gif_lib.h--ungif;libungif--C:/SVN/va/SceneryBuilder/3rdparty-- -- searching ZLIB --zlib.h--z;zlib;zlib1--C:/SVN/va/SceneryBuilder/3rdparty-- -- searching PNG --png.h--libpng;libpng13--C:/SVN/va/SceneryBuilder/3rdparty-- -- Found JPEG: C:/SVN/va/SceneryBuilder/3rdParty/lib/libjpeg.lib -- Found PNG: C:/SVN/va/SceneryBuilder/3rdParty/lib/libpng13.lib -- Configuring done -- Generating done -- Build files have been written to: C:/SVN/va/SceneryBuilder/osgbuild Microsoft (R) Visual C++ Project Builder - Command Line Version 9.00.21022 Copyright (C) Microsoft Corporation. All rights reserved. Build started: Project: ZERO_CHECK, Configuration: Release|Win32 ZERO_CHECK - up-to-date Build started: Project: osgPresentation, Configuration: Release|Win32 Linking... Creating library C:\SVN\va\SceneryBuilder\osgbuild\lib\Release\..\osgPresentation.lib and object C:\SVN\va\SceneryBuilder\osgbuild\lib\Release\..\osgPresentation.exp PickEventHandler.obj : warning LNK4217: locally defined symbol ?selectsl...@slideeventhandler@osgPresentation@@qae_...@z (public: bool __thiscall osgPresentation::SlideEventHandler::selectSlide(int,int)) imported in function public: void __thiscall osgPresentation::PickEventHandler::doOperation(void) (?dooperat...@pickeventhandler@osgPresentation@@QAEXXZ) PickEventHandler.obj : warning LNK4217: locally defined symbol ?dispatchev...@slideeventhandler@osgPresentation@@qaexabukeyposit...@2@@Z (public: void __thiscall osgPresentation::SlideEventHandler::dispatchEvent(struct osgPresentation::KeyPosition const )) imported in function public: void __thiscall osgPresentation::PickEventHandler::doOperation(void) (?dooperat...@pickeventhandler@osgPresentation@@QAEXXZ) PickEventHandler.obj : warning LNK4217: locally defined symbol ?insta...@slideeventhandler@osgPresentation@@sapa...@xz (public: static class osgPresentation::SlideEventHandler * __cdecl osgPresentation::SlideEventHandler::instance(void)) imported in function public: void __thiscall osgPresentation::PickEventHandler::doOperation(void) (?dooperat...@pickeventhandler@osgPresentation@@QAEXXZ) SlideShowConstructor.obj : warning LNK4217: locally defined symbol ?requiresblend...@animationmaterial@osgPresentation@@QBE_NXZ (public: bool __thiscall osgPresentation::AnimationMaterial::requiresBlending(void)const ) imported in function protected: class osg::Node * __thiscall osgPresentation::SlideShowConstructor::attachMaterialAnimation(class osg::Node *,struct osgPresentation::SlideShowConstructor::PositionData const ) (?attachmaterialanimat...@slideshowconstructor@osgPresentation@@iaepavn...@osg@@pa...@abupositiondata@12@@Z) SlideShowConstructor.obj : warning LNK4217: locally defined symbol ?ins...@animationmaterial@osgPresentation@@qaexnpavmater...@osg@@@Z (public: void __thiscall osgPresentation::AnimationMaterial::insert(double,class osg::Material *)) imported in function protected: class osg::Node * __thiscall osgPresentation::SlideShowConstructor::attachMaterialAnimation(class osg::Node *,struct osgPresentation::SlideShowConstructor::PositionData const ) (?attachmaterialanimat...@slideshowconstructor@osgPresentation@@iaepavn...@osg@@pa...@abupositiondata@12@@Z) SlideShowConstructor.obj :
Re: [osg-users] Qt osgviewer
Hi Gustavo Im not familiar with a sample for raw OSG integration with QT but Delta3D is integrating with QT and the Delta rendering engine is a relatively thin layer on top of OSG. Brgs Ralf Stokholm 2009/6/16 Gustavo Puche gustavo.pu...@gmail.com Hi guys, We are developing a robotic system based on OpenRAVE and we want to develop a viewer based in OSG. Does anybody knows how can we use the osgviewer in a Qt window [Question] We are not interested in the fullscreen view. Thank you! Cheers, Gustavo -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=14025#14025 ___ 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] master/slave camera question
Hi Wyatt
This could basically be achived by setting a render target for your depth
buffer.
osg::Texture2D* CreateDepthTexture( unsigned short w, unsigned short h )
{
osg::Texture2D* texture = new osg::Texture2D() ;
texture-setTextureSize( w, h );
texture-setInternalFormat(GL_DEPTH_COMPONENT);
texture-setFilter(osg::Texture2D::MIN_FILTER,osg::Texture2D::LINEAR);
texture-setFilter(osg::Texture2D::MAG_FILTER,osg::Texture2D::LINEAR);
return texture;
}
m_RttDepthBuffer = CreateDepthTexture(sizeX,sizeY);
m_RttCamera = new osg::Camera;
m_RttCamera-setReferenceFrame(osg::Transform::ABSOLUTE_RF);
m_RttCamera-setClearMask(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
m_RttCamera-setViewport(0, 0, m_RttFrameBuffer-getTextureWidth(),
m_RttFrameBuffer-getTextureHeight());
m_RttCamera-setCullingMode(osg::CullSettings::VIEW_FRUSTUM_CULLING);
m_RttCamera-attach(osg::Camera::DEPTH_BUFFER, m_RttDepthBuffer.get());
After each render the m_RttDepthBuffer texture will contain your depths as a
greyscale image.
Brgs.
Ralf Stokholm
2009/6/10 Wyatt Earp wyattbsearp1...@gmail.com
Ultimately I am trying to generate an image where each pixel
represents the distance from the viewer to the content in the pixel.
I guess you could think of it as something like an imaging range
finder.
Wyatt
On 6/10/09, Robert Osfield robert.osfi...@gmail.com wrote:
HI Wyatt,
On Tue, Jun 9, 2009 at 11:07 PM, Wyatt Earpwyattbsearp1...@gmail.com
wrote:
Let me see if I understand this... Assuming I pass no args to the app
when
I
run it, the osgdistortion createDistortionSubgraph first creates a
camera
which will render the scene to a texture attached to an FBO before the
main
camera renders the scene. Then the hud camera is created to render
the
quad textured with the texture created by the previous camera? So I
have
two slave cameras in addition to the main camera?
Yes two slave cameras, and a master camera that is passive - it just
provides the projection and view matrix for the first of the slaves to
use for it's projection and modelview matrix, the second camera has
ignores the master projection and modelview matrix, the two slaves
achieve this be setting their ReferenceFrame to RELATIVE_RF (the
default) and ABSOLTE_RF respectively.The slave Camera's also set
their RenderOrder to make sure the RTT camera is draw first.
How would I render scene to a depth texture? Do I create a depth
texture
and attach it to the first camera?
You just attach the texture you want to the Camera's depth buffer
component rather than the colour buffer component.
Assuming that I want to use the texture created by the first camera as
an
input to frag shader program, would I need to add a third camera which I
would add the shader as is done in the osgshaders example?
If you want another pass then you might use another camera, but if you
just do everything in a second pass using the original texture then
the will be no need to do add another slave camera. You really don't
provide enough info on what exactly you are trying to achieve and why
so I can't really say too much on what you actually need in your case.
Robert.
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Re: [osg-users] ATI cards and openscenegraph
Hi Peted You should in general not have any issues with OSG and ATI drivers I am personally running OSG on both NVIDIA and ATI hardware and it works fine on both. Robert is currently using an ATI card on his development machine and if you search the archives there will be some information on his experience and any issues he has discovered. Good luck :-) Brgs. Ralf Stokholm 2009/6/11 pe...@iinet.net.au Hello Im getting a Powercolor ATI HD3850 graphics card for my PC. and am running XP sp3. I was wondering if there are any problems in general with openscenepgraph and either this card or even ATI cards/drivers in general. This would be for both runnning opengl/openscenegraph apps and for development in both. Up until now i have only ever had nvidia cards, so im just wondering if anyone has exprienced any issues with ATI, either via the openscenepgraph or even opengl stuff Any advice appreciated thanks Peted ___ 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] Database pager questions
Hi Brett 12) As far as I know the database pager is multithreaded regardless if osg is running multi or single threaded. Osg threading is related to threading of the cull and draw traversals. 3) How does the pager decide when to page something in? My understanding is that this is based on the cull traversal if a pagedlod is (inside) the cull requirements based on the viewfrustrun and the lodscale of the camera. its children are loaded. 4) How does the pager decide when to page something out? This depends on your sceme, when a given lod no longer fulfills the requirements to be in the scene it could be culled. The database pager pre 2.8 uses a sceme based on how much time has passed since the node last fulfilled the requirements to stay in the scene, in 2.8 the maximum number of nodes to keep can be capped. 5) How does the pager page something out? Initially it is removed from the scenegraph and then the nodes are deleted (more likely they are dereferences and the ref_ptr takes care of freeing the memmory. Brgs Ralf Stokholm 2009/6/4 brettwiesner brettwies...@gmail.com Hi, Just validating some assumptions about the database pager... 1) Is paging in single threaded mode blocking? If OSG is in single threaded mode, will the pager load data and stop rendering or will it load in another thread anyway? 2) If OSG is running in multithreaded mode will the pager load data asychronously? Now some real questions: 3) How does the pager decide when to page something in? 4) How does the pager decide when to page something out? 5) How does the pager page something out? Thanks, Brett ___ 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] Set image as static background
Hi Roy I see nothing strange in your sample, have you tried setting a higher debug level to see if some of the functions fail? Are you running this in a simeple viewer app like one of the samples? Brgs. Ralf Stokholm 2009/5/18 roy vardi royva...@walla.co.il Hi Ralf, Thanks, but it still doesn't work... I've added the first function you wrote, and then connected the return geode to a projection pointer, connecting it to my model's root. Shouldn't i connect it (or set it...) to the camera viewer somehow? Here's what i did: osg::Geode* geode = new osg::Geode; osg::Geometry* geometry = osg::createTexturedQuadGeometry(osg::Vec3(0,0.5,0),osg::Vec3(1,0,0),osg::Vec3(0,0,1),0, 0, 1, 1); geode-addDrawable(geometry); osg::Texture2D* t_texture = new osg::Texture2D(osgDB::readImageFile(stars.jpg)); geode-getOrCreateStateSet()-setTextureAttributeAndModes(0,t_texture, osg::StateAttribute::ON); geode-getOrCreateStateSet()-setTextureMode(0, GL_TEXTURE_2D,osg::StateAttribute::ON); osg::Projection* Proj = new osg::Projection; Proj-setMatrix(osg::Matrix::ortho2D(0,1,0,1)); root-addChild(Proj); Proj-addChild(geode); osgViewer::Viewer viewer; viewer.setSceneData (root.get()); return viewer.run(); Thanks again!!! Cheers, roy -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=12377#12377 ___ 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] Set image as static background
Hi Roy
There is an osgClearNode, that might be what you want, but this works for
me.
osg::Geode* createNodeWithMyImageOnIt(const std::string filename)
{
osg::Geode* geode = new osg::Geode;
osg::Geometry* geometry =
osg::createTexturedQuadGeometry(osg::Vec3(0,0.5,0),osg::Vec3(1,0,0),osg::Vec3(0,0,1),0,
0, 1, 1);
geode-addDrawable(geometry);
osg::Texture2D* texture = new
osg::Texture2D(osgDB::readImageFile(filename));
geode-getOrCreateStateSet()-setTextureAttributeAndModes(0,texture,
osg::StateAttribute::ON);
geode-getOrCreateStateSet()-setTextureMode(0,
GL_TEXTURE_2D,osg::StateAttribute::ON);
//geode-getOrCreateStateSet()-setMode(GL_LIGHTING,
osg::StateAttribute::OFF);
return geode;
}
void Cockpit::Drawgauges()
{
osg::Projection* Proj = new osg::Projection;
Proj-setMatrix(osg::Matrix::ortho2D(0,1,0,1));
osg::Geode* backgroundImage = createNodeWithMyImageOnIt(imagefile);
m_CockpitGroup-addChild(Proj);
Proj-addChild(backgroundImage);
Brgs.
Ralf Stokholm
2009/5/18 roy vardi royva...@walla.co.il
Hi guys (and girls...),
I'm new with the OSG.
I'm creating a basic model, and for the past couple of hours have tried
without success to set a loaded image as the model's background, instead of
the default one (the blue color).
I know that there is a camera function which can change the background
color, but it only supports an RGB coordinates input.
Is there an easy way to just set an image as the background?
Thank you!
Cheers,
roy
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Re: [osg-users] Initial cut at CMake support + branch of osgEphemeris
Hi Robert Just a small heads up that the SimCore project which is an addon/extension of Delta3d is using osgEphemeris, they are building using Cmake, so their might be a hint to get from that one. http://delta3d-extras.svn.sourceforge.net/svnroot/delta3d-extras/SimulationCore/trunk/ext Brgs. Ralf Stokholm 2009/4/10 Robert Osfield robert.osfi...@gmail.com: Hi All, I'm off doing training next week and one of the topics may well be touch upon is osgEphemeris so I've pulled down the CVS from Don's AndesEnginnering website and had a bash at getting it, and it's dependency of Producer compiling. I struggled to get things working so ended up having a bash at porting osgEphemeris to using CMake and against the latest OSG rev. To get the build working I've drawn the CMake files from VPB, OSG and osgEarth, it's a bit of hack... but it's almost working. So far the osgEphemeris library itself is compiling and linking, and the plugin is compiling, but the paths are failing. So... I was wondering if some helpful soul might be able to spot my CMake script error(s). I've put up by branch of osgEphemeris on the openscenegraph.org subversion repository, you can grab it from: svn co http://www.openscenegraph.org/svn/osgEphemeris/trunk osgEphemeris Then to compile it's the usual OSG/Cmake routine, and under unices it looks like: ./configure make Which goes pretty sweetly till it tries to link the plugin. These are the errors I get: [ 86%] Building CXX object src/osgEphemeris/CMakeFiles/osgEphemeris.dir/StarField.o [ 93%] Building CXX object src/osgEphemeris/CMakeFiles/osgEphemeris.dir/sun_image.o Linking CXX shared library ../../lib/libosgEphemeris.so [ 93%] Built target osgEphemeris Scanning dependencies of target osgdb_osgephemeris [100%] Building CXX object src/osgPlugins/osgEphemeris/CMakeFiles/osgdb_osgephemeris.dir/IO_EphemerisModel.o Linking CXX shared module /osgPlugins-2.9.2/osgdb_osgephemeris.so /usr/bin/ld: cannot open output file /osgPlugins-2.9.2/osgdb_osgephemeris.so: No such file or directory collect2: ld returned 1 exit status make[2]: *** [/osgPlugins-2.9.2/osgdb_osgephemeris.so] Error 1 make[1]: *** [src/osgPlugins/osgEphemeris/CMakeFiles/osgdb_osgephemeris.dir/all] Error 2 The error seems to be in the path to what should osgEmpheris/lib/osgPlugins-2.9.2, but instead it's just got the path /osgPlugins-2.9.2/osgdb_osgephemeris.so. While I've tried to honour how the OSG does thing w.r.t plugins something is obviously wrong.. Hopefully what is wrong might ring a bell to the OSG/Cmake guru's. I haven't yet put together an osgViewer based example but this should be pretty straight forward. Cheers, Robert. ___ 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] How to get heightfield from ReadFileCallback VPB Terrain
Hi Robert
I have gotten a bit further with this, and there are some indications
it might be a viable solution.
But I have run into a problem, it seams that Im not removing patches
from my physics engine when higher resolutions patches replaces them.
Can You confirm that If a given osgTerrain::TerrainTile is replaced by
its four higher resolution children the acociated heightfields are not
deleted, and as a result the observer callback is not called?
And if this is the case do you have any good ideas on how to figure
out when to disable these patches in the physics engine, so that I
dont have multiple patches loaded for the same area?
Brgs.
Ralf Stokholm
2009/4/3 Robert Osfield robert.osfi...@gmail.com:
Hi Ralf,
Use the osg::Observer mechanism for watching when objects get deleted. Just
register your observer with the TerrainTile/HeightField you've set up your
physics for then you'll be able to get your observer called when it goes out
of scope. osg::observert_ptr uses osg::Observer, as does osg::State so
have a look at these for usage of Observer.
Robert.
On Fri, Apr 3, 2009 at 11:44 AM, Ralf Stokholm alfma...@arenalogic.com
wrote:
Hi Robert
Its not that I need to keep the memmory around.
I need to know when a terrain tile is unloaded from the scene and use
that event to unload the physics heightfield as well.
Im guessing the life of a TerrainTile is similar to this:
1. Loaded/created by the database pager
2. Added to the scenegraph by the databasepager.
3. Disabled/hidden by the CullVisitor.
4. Enabled/Shown by the CullVisitor. (possibly if it is only culled
out for a short time OSG 2.6.1)
5. Unloaded/Destroyed.
I need a way to catch at least event 1 and 5. Could this be done using
reference counting or is there a better way?
Brgs.
Ralf Stokholm
2009/4/3 Robert Osfield robert.osfi...@gmail.com:
Hi Ralf,
If you need to keep the memory around then use a ref_ptr to the
HeightField, but... this will keep the memory around so if you do no
longer
need it you might want to implement a scheme to free it, such as
watching
when the ref count goes to one.
The other approach is to use an observer_ptr that doesn't change the
ref
count of the HeightFiled, and gets reset to 0 when the HeightField get
deleted. You can also use a custom osg::Observer to watch for object
deletions as well.
Robert
On Fri, Apr 3, 2009 at 11:22 AM, Ralf Stokholm alfma...@arenalogic.com
wrote:
Hi Robert (list)
Im trying to use the ReadFileCallback to load the heightfield int my
physics engine.
So far I have been using a CullVisitor to grap the triangles from the
finished scene, but it has major drawback in that it forces me to load
the data as meshes which is terrible for memmory and takes a long time
to load.
It seams im able to load the data as heightfields from the
ReadFileCallback, but this leads to my next problem. I need a way to
reference the data later, to be able to remove it when tiles are
deletet and disable it when tiles are disabled by the scene
cullvisitor.
Is there a way to relate the nodes i visit in my ReadFileCallback to
nodes i visit in a special cullvisitor for the final scenegraph?
Basically do you have any hints on how to syncronise the state of my
physics engine with the state of my Paged VPB terrain?
Brgs.
Ralf Stokholm
2009/4/2 Ralf Stokholm alfma...@arenalogic.com:
Hi Robert
Thanks a lot, was starting to get at this but using a more primitive
approach of running through all the children of the node that I did
get.
Will try to implement your method.
Brgs.
Ralf Stokholm
2009/4/2 Robert Osfield robert.osfi...@gmail.com:
Hi Ralf,
You'll need to write a custom NodeVisitor that traverses through the
loaded
scene graph and picks out the TerrainTile using dyanmic cast. It
just
so
happens that I'm actually working on a ReadFileCallback/custom
Visitor
that
does pick out all the TerrainTile's in a subgraph (there will
typically
be
one, two or four due to the quad tree structure generated by VPB.)
The visitor looks like:
class FindTerrainTileVisitor : public osg::NodeVisitor
{
public:
FindTerrainTileVisitor():
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN)
{
}
void reset()
{
_terrainTiles.clear();
}
void apply(osg::Group group)
{
osgTerrain::TerrainTile* terrainTile =
dynamic_castosgTerrain::TerrainTile*(group);
if (terrainTile)
{
_terrainTiles.push_back(terrainTile);
}
else
{
traverse(group);
}
}
typedef std::list osg::ref_ptrosgTerrain::TerrainTile
TerrainTiles;
TerrainTiles _terrainTiles;
};
The custom ReadFileCallback's readNode method looks like
Re: [osg-users] How to get heightfield from ReadFileCallback VPB Terrain
Hi Robert Lower levels of detail aren't unreferenced but kept around in any paged database, this includes a osgTerrain::TerrainTile based paged database. I was expecting this. With regards to active tiles, my problem is that going this approach I cant figure out how to extract the state information from the scenegraph. From what I understand the TerrainTiles that I process during my read file callback will not provide any information on when they are invalidated by the loading of higher resolution tiles, right? I understand that the physics part is specific to my application, but an interface or pattern for syncronising the active scenegraph generated when running an osgTerrain::TerrainTile based paged database with a given application is usefull in other places. As I said so far we have been using a cullvisitor that runs through the entire scenegraph looking for terrain nodes. It then checks if these nodes are already in our set of nodes. If its not a new physics object is generated by pulling the geometry using a trianglevisitor. This method is both slow, repeats bookkeping already performed in the Terrain/Scene graph machinery and uses way more memmory than is neccecery. Basically I end up generating 3 unique vertices and 3 indecies for each triangle rendered. This will consime roughly 28 times the amount of memmory that would be needed if I could use the heightfield data directly. Brgs. Ralf 2009/4/6 Robert Osfield robert.osfi...@gmail.com: Hi Ralf, Lower levels of detail aren't unreferenced but kept around in any paged database, this includes a osgTerrain::TerrainTile based paged database. As how to manage the mapping of which physics tiles should be active... well I don't know what to recommend, there a lots of different ways you could probably tackle it. My job is the scene graph, I'll leave application dev issues to members of the community. Robert. On Mon, Apr 6, 2009 at 3:12 PM, Ralf Stokholm alfma...@arenalogic.com wrote: Hi Robert I have gotten a bit further with this, and there are some indications it might be a viable solution. But I have run into a problem, it seams that Im not removing patches from my physics engine when higher resolutions patches replaces them. Can You confirm that If a given osgTerrain::TerrainTile is replaced by its four higher resolution children the acociated heightfields are not deleted, and as a result the observer callback is not called? And if this is the case do you have any good ideas on how to figure out when to disable these patches in the physics engine, so that I dont have multiple patches loaded for the same area? Brgs. Ralf Stokholm 2009/4/3 Robert Osfield robert.osfi...@gmail.com: Hi Ralf, Use the osg::Observer mechanism for watching when objects get deleted. Just register your observer with the TerrainTile/HeightField you've set up your physics for then you'll be able to get your observer called when it goes out of scope. osg::observert_ptr uses osg::Observer, as does osg::State so have a look at these for usage of Observer. Robert. On Fri, Apr 3, 2009 at 11:44 AM, Ralf Stokholm alfma...@arenalogic.com wrote: Hi Robert Its not that I need to keep the memmory around. I need to know when a terrain tile is unloaded from the scene and use that event to unload the physics heightfield as well. Im guessing the life of a TerrainTile is similar to this: 1. Loaded/created by the database pager 2. Added to the scenegraph by the databasepager. 3. Disabled/hidden by the CullVisitor. 4. Enabled/Shown by the CullVisitor. (possibly if it is only culled out for a short time OSG 2.6.1) 5. Unloaded/Destroyed. I need a way to catch at least event 1 and 5. Could this be done using reference counting or is there a better way? Brgs. Ralf Stokholm 2009/4/3 Robert Osfield robert.osfi...@gmail.com: Hi Ralf, If you need to keep the memory around then use a ref_ptr to the HeightField, but... this will keep the memory around so if you do no longer need it you might want to implement a scheme to free it, such as watching when the ref count goes to one. The other approach is to use an observer_ptr that doesn't change the ref count of the HeightFiled, and gets reset to 0 when the HeightField get deleted. You can also use a custom osg::Observer to watch for object deletions as well. Robert On Fri, Apr 3, 2009 at 11:22 AM, Ralf Stokholm alfma...@arenalogic.com wrote: Hi Robert (list) Im trying to use the ReadFileCallback to load the heightfield int my physics engine. So far I have been using a CullVisitor to grap the triangles from the finished scene, but it has major drawback in that it forces me to load the data as meshes which is terrible for memmory and takes a long time to load. It seams im able to load the data as heightfields from
Re: [osg-users] How to get heightfield from ReadFileCallback VPB Terrain
Hi Robert (list)
Im trying to use the ReadFileCallback to load the heightfield int my
physics engine.
So far I have been using a CullVisitor to grap the triangles from the
finished scene, but it has major drawback in that it forces me to load
the data as meshes which is terrible for memmory and takes a long time
to load.
It seams im able to load the data as heightfields from the
ReadFileCallback, but this leads to my next problem. I need a way to
reference the data later, to be able to remove it when tiles are
deletet and disable it when tiles are disabled by the scene
cullvisitor.
Is there a way to relate the nodes i visit in my ReadFileCallback to
nodes i visit in a special cullvisitor for the final scenegraph?
Basically do you have any hints on how to syncronise the state of my
physics engine with the state of my Paged VPB terrain?
Brgs.
Ralf Stokholm
2009/4/2 Ralf Stokholm alfma...@arenalogic.com:
Hi Robert
Thanks a lot, was starting to get at this but using a more primitive
approach of running through all the children of the node that I did
get.
Will try to implement your method.
Brgs.
Ralf Stokholm
2009/4/2 Robert Osfield robert.osfi...@gmail.com:
Hi Ralf,
You'll need to write a custom NodeVisitor that traverses through the loaded
scene graph and picks out the TerrainTile using dyanmic cast. It just so
happens that I'm actually working on a ReadFileCallback/custom Visitor that
does pick out all the TerrainTile's in a subgraph (there will typically be
one, two or four due to the quad tree structure generated by VPB.)
The visitor looks like:
class FindTerrainTileVisitor : public osg::NodeVisitor
{
public:
FindTerrainTileVisitor():
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN)
{
}
void reset()
{
_terrainTiles.clear();
}
void apply(osg::Group group)
{
osgTerrain::TerrainTile* terrainTile =
dynamic_castosgTerrain::TerrainTile*(group);
if (terrainTile)
{
_terrainTiles.push_back(terrainTile);
}
else
{
traverse(group);
}
}
typedef std::list osg::ref_ptrosgTerrain::TerrainTile TerrainTiles;
TerrainTiles _terrainTiles;
};
The custom ReadFileCallback's readNode method looks like:
virtual osgDB::ReaderWriter::ReadResult readNode(const std::string
filename, const osgDB::ReaderWriter::Options* options)
{
osg::notify(osg::NOTICE)Loading tile filenamestd::endl;
osgDB::ReaderWriter::ReadResult result =
osgDB::Registry::instance()-readNodeImplementation(filename,options);
if (result.validNode())
{
FindTerrainTileVisitor fttv;
result.getNode()-accept(fttv);
for(FindTerrainTileVisitor::TerrainTiles::iterator itr =
fttv._terrainTiles.begin();
itr != fttv._terrainTiles.end();
++itr)
{
osgTerrain::TerrainTile* terrainTile = itr-get();
/// my stuff omitted, put your stuff here
}
}
}
Robert.
On Thu, Apr 2, 2009 at 1:05 PM, Ralf Stokholm alfma...@arenalogic.com
wrote:
Hi List
Im trying to get the heightfiled data from a VPB terrain using
ReadFileCallback.
I use the code from readfile callback like this.
class MyReadFileCallback : public osgDB::Registry::ReadFileCallback
{
public:
virtual osgDB::ReaderWriter::ReadResult readNode(const
std::string fileName, const osgDB::ReaderWriter::Options* options)
{
// note when calling the Registry to do the read you have to
call readNodeImplementation NOT readNode, as this will
// cause on infinite recusive loop.
osgDB::ReaderWriter::ReadResult result =
osgDB::Registry::instance()-readNodeImplementation(fileName,options);
if (result.validHeightField())
{
LOG_ERROR(Found a valid HeightField);
}
return result;
}
};
The idea was simply to see if I had the heightfield available, but
even though I have verified that it gets called it is never a valid
heightfield.
This is on a terrain build using VPB with the --TERRAIN option.
Shouldent I be able to get the heightfieldnodes?
Brgs.
Ralf Stokholm
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Re: [osg-users] How to get heightfield from ReadFileCallback VPB Terrain
Hi Robert
Its not that I need to keep the memmory around.
I need to know when a terrain tile is unloaded from the scene and use
that event to unload the physics heightfield as well.
Im guessing the life of a TerrainTile is similar to this:
1. Loaded/created by the database pager
2. Added to the scenegraph by the databasepager.
3. Disabled/hidden by the CullVisitor.
4. Enabled/Shown by the CullVisitor. (possibly if it is only culled
out for a short time OSG 2.6.1)
5. Unloaded/Destroyed.
I need a way to catch at least event 1 and 5. Could this be done using
reference counting or is there a better way?
Brgs.
Ralf Stokholm
2009/4/3 Robert Osfield robert.osfi...@gmail.com:
Hi Ralf,
If you need to keep the memory around then use a ref_ptr to the
HeightField, but... this will keep the memory around so if you do no longer
need it you might want to implement a scheme to free it, such as watching
when the ref count goes to one.
The other approach is to use an observer_ptr that doesn't change the ref
count of the HeightFiled, and gets reset to 0 when the HeightField get
deleted. You can also use a custom osg::Observer to watch for object
deletions as well.
Robert
On Fri, Apr 3, 2009 at 11:22 AM, Ralf Stokholm alfma...@arenalogic.com
wrote:
Hi Robert (list)
Im trying to use the ReadFileCallback to load the heightfield int my
physics engine.
So far I have been using a CullVisitor to grap the triangles from the
finished scene, but it has major drawback in that it forces me to load
the data as meshes which is terrible for memmory and takes a long time
to load.
It seams im able to load the data as heightfields from the
ReadFileCallback, but this leads to my next problem. I need a way to
reference the data later, to be able to remove it when tiles are
deletet and disable it when tiles are disabled by the scene
cullvisitor.
Is there a way to relate the nodes i visit in my ReadFileCallback to
nodes i visit in a special cullvisitor for the final scenegraph?
Basically do you have any hints on how to syncronise the state of my
physics engine with the state of my Paged VPB terrain?
Brgs.
Ralf Stokholm
2009/4/2 Ralf Stokholm alfma...@arenalogic.com:
Hi Robert
Thanks a lot, was starting to get at this but using a more primitive
approach of running through all the children of the node that I did
get.
Will try to implement your method.
Brgs.
Ralf Stokholm
2009/4/2 Robert Osfield robert.osfi...@gmail.com:
Hi Ralf,
You'll need to write a custom NodeVisitor that traverses through the
loaded
scene graph and picks out the TerrainTile using dyanmic cast. It just
so
happens that I'm actually working on a ReadFileCallback/custom Visitor
that
does pick out all the TerrainTile's in a subgraph (there will typically
be
one, two or four due to the quad tree structure generated by VPB.)
The visitor looks like:
class FindTerrainTileVisitor : public osg::NodeVisitor
{
public:
FindTerrainTileVisitor():
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN)
{
}
void reset()
{
_terrainTiles.clear();
}
void apply(osg::Group group)
{
osgTerrain::TerrainTile* terrainTile =
dynamic_castosgTerrain::TerrainTile*(group);
if (terrainTile)
{
_terrainTiles.push_back(terrainTile);
}
else
{
traverse(group);
}
}
typedef std::list osg::ref_ptrosgTerrain::TerrainTile
TerrainTiles;
TerrainTiles _terrainTiles;
};
The custom ReadFileCallback's readNode method looks like:
virtual osgDB::ReaderWriter::ReadResult readNode(const std::string
filename, const osgDB::ReaderWriter::Options* options)
{
osg::notify(osg::NOTICE)Loading tile filenamestd::endl;
osgDB::ReaderWriter::ReadResult result =
osgDB::Registry::instance()-readNodeImplementation(filename,options);
if (result.validNode())
{
FindTerrainTileVisitor fttv;
result.getNode()-accept(fttv);
for(FindTerrainTileVisitor::TerrainTiles::iterator itr =
fttv._terrainTiles.begin();
itr != fttv._terrainTiles.end();
++itr)
{
osgTerrain::TerrainTile* terrainTile = itr-get();
/// my stuff omitted, put your stuff here
}
}
}
Robert.
On Thu, Apr 2, 2009 at 1:05 PM, Ralf Stokholm alfma...@arenalogic.com
wrote:
Hi List
Im trying to get the heightfiled data from a VPB terrain using
ReadFileCallback.
I use the code from readfile callback like this.
class MyReadFileCallback : public osgDB::Registry::ReadFileCallback
{
public:
virtual osgDB::ReaderWriter::ReadResult readNode(const
std::string fileName, const osgDB::ReaderWriter::Options* options
[osg-users] How to get heightfield from ReadFileCallback VPB Terrain
Hi List
Im trying to get the heightfiled data from a VPB terrain using ReadFileCallback.
I use the code from readfile callback like this.
class MyReadFileCallback : public osgDB::Registry::ReadFileCallback
{
public:
virtual osgDB::ReaderWriter::ReadResult readNode(const
std::string fileName, const osgDB::ReaderWriter::Options* options)
{
// note when calling the Registry to do the read you have to
call readNodeImplementation NOT readNode, as this will
// cause on infinite recusive loop.
osgDB::ReaderWriter::ReadResult result =
osgDB::Registry::instance()-readNodeImplementation(fileName,options);
if (result.validHeightField())
{
LOG_ERROR(Found a valid HeightField);
}
return result;
}
};
The idea was simply to see if I had the heightfield available, but
even though I have verified that it gets called it is never a valid
heightfield.
This is on a terrain build using VPB with the --TERRAIN option.
Shouldent I be able to get the heightfieldnodes?
Brgs.
Ralf Stokholm
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Re: [osg-users] How to get heightfield from ReadFileCallback VPB Terrain
Hi Jason
Thanks for the surgestion, tried the following.
osgDB::ReaderWriter::ReadResult result =
osgDB::Registry::instance()-readNodeImplementation(fileName,options);
if (result.validNode())
{
LOG_ERROR(Found a valid Node);
if (dynamic_castosgTerrain::TerrainTile*(result.getNode()))
{
LOG_ERROR(Found a valid TerrainTile);
}
}
There are plenty of valid nodes, but none of them will accept a cast
to TerranTile, is there a way to verify that my generated dataset
contains TerrainTiles ?
Brgs.
Ralf Stokholm
2009/4/2 Jason Beverage jasonbever...@gmail.com:
Hi ralf
Try casting the node to an osgTerrain::TerrainTile. If the cast works you'll
be able to grab the elevation layer and cast it to a heightfieldlayer and
grab the hf
Jason
Sent from my iPhone
On Apr 2, 2009, at 8:05 AM, Ralf Stokholm alfma...@arenalogic.com wrote:
Hi List
Im trying to get the heightfiled data from a VPB terrain using
ReadFileCallback.
I use the code from readfile callback like this.
class MyReadFileCallback : public osgDB::Registry::ReadFileCallback
{
public:
virtual osgDB::ReaderWriter::ReadResult readNode(const
std::string fileName, const osgDB::ReaderWriter::Options* options)
{
// note when calling the Registry to do the read you have to
call readNodeImplementation NOT readNode, as this will
// cause on infinite recusive loop.
osgDB::ReaderWriter::ReadResult result =
osgDB::Registry::instance()-readNodeImplementation(fileName,options);
if (result.validHeightField())
{
LOG_ERROR(Found a valid HeightField);
}
return result;
}
};
The idea was simply to see if I had the heightfield available, but
even though I have verified that it gets called it is never a valid
heightfield.
This is on a terrain build using VPB with the --TERRAIN option.
Shouldent I be able to get the heightfieldnodes?
Brgs.
Ralf Stokholm
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Re: [osg-users] How to get heightfield from ReadFileCallback VPB Terrain
Hi Robert
Thanks a lot, was starting to get at this but using a more primitive
approach of running through all the children of the node that I did
get.
Will try to implement your method.
Brgs.
Ralf Stokholm
2009/4/2 Robert Osfield robert.osfi...@gmail.com:
Hi Ralf,
You'll need to write a custom NodeVisitor that traverses through the loaded
scene graph and picks out the TerrainTile using dyanmic cast. It just so
happens that I'm actually working on a ReadFileCallback/custom Visitor that
does pick out all the TerrainTile's in a subgraph (there will typically be
one, two or four due to the quad tree structure generated by VPB.)
The visitor looks like:
class FindTerrainTileVisitor : public osg::NodeVisitor
{
public:
FindTerrainTileVisitor():
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN)
{
}
void reset()
{
_terrainTiles.clear();
}
void apply(osg::Group group)
{
osgTerrain::TerrainTile* terrainTile =
dynamic_castosgTerrain::TerrainTile*(group);
if (terrainTile)
{
_terrainTiles.push_back(terrainTile);
}
else
{
traverse(group);
}
}
typedef std::list osg::ref_ptrosgTerrain::TerrainTile TerrainTiles;
TerrainTiles _terrainTiles;
};
The custom ReadFileCallback's readNode method looks like:
virtual osgDB::ReaderWriter::ReadResult readNode(const std::string
filename, const osgDB::ReaderWriter::Options* options)
{
osg::notify(osg::NOTICE)Loading tile filenamestd::endl;
osgDB::ReaderWriter::ReadResult result =
osgDB::Registry::instance()-readNodeImplementation(filename,options);
if (result.validNode())
{
FindTerrainTileVisitor fttv;
result.getNode()-accept(fttv);
for(FindTerrainTileVisitor::TerrainTiles::iterator itr =
fttv._terrainTiles.begin();
itr != fttv._terrainTiles.end();
++itr)
{
osgTerrain::TerrainTile* terrainTile = itr-get();
/// my stuff omitted, put your stuff here
}
}
}
Robert.
On Thu, Apr 2, 2009 at 1:05 PM, Ralf Stokholm alfma...@arenalogic.com
wrote:
Hi List
Im trying to get the heightfiled data from a VPB terrain using
ReadFileCallback.
I use the code from readfile callback like this.
class MyReadFileCallback : public osgDB::Registry::ReadFileCallback
{
public:
virtual osgDB::ReaderWriter::ReadResult readNode(const
std::string fileName, const osgDB::ReaderWriter::Options* options)
{
// note when calling the Registry to do the read you have to
call readNodeImplementation NOT readNode, as this will
// cause on infinite recusive loop.
osgDB::ReaderWriter::ReadResult result =
osgDB::Registry::instance()-readNodeImplementation(fileName,options);
if (result.validHeightField())
{
LOG_ERROR(Found a valid HeightField);
}
return result;
}
};
The idea was simply to see if I had the heightfield available, but
even though I have verified that it gets called it is never a valid
heightfield.
This is on a terrain build using VPB with the --TERRAIN option.
Shouldent I be able to get the heightfieldnodes?
Brgs.
Ralf Stokholm
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Re: [osg-users] How do I access the Z-Buffer content from the last render pass
Hi Daniel
I dont know if its possible to do this from the native z buffer, but I
know its possible if you create the zbuffer as part of a render target.
i.e.
osg::Texture2D* CreateTexture( unsigned short w, unsigned short h )
{
osg::Texture2D* texture = new osg::Texture2D() ;
texture-setTextureSize( w, h );
texture-setInternalFormat(GL_RGBA);
texture-setFilter(osg::Texture2D::MIN_FILTER,osg::Texture2D::LINEAR);
texture-setFilter(osg::Texture2D::MAG_FILTER,osg::Texture2D::LINEAR);
return texture;
}
osg::Texture2D* CreateDepthTexture( unsigned short w, unsigned short h )
{
osg::Texture2D* texture = new osg::Texture2D() ;
texture-setTextureSize( w, h );
texture-setInternalFormat(GL_DEPTH_COMPONENT);
texture-setFilter(osg::Texture2D::MIN_FILTER,osg::Texture2D::LINEAR);
texture-setFilter(osg::Texture2D::MAG_FILTER,osg::Texture2D::LINEAR);
return texture;
}
{
SceneTextureCamera::SceneTextureCamera( int sizeX, int sizeY, const std::
string camera )
{
//create a texture to use as a render target 512 x 512 for now
m_RttFrameBuffer = CreateTexture(sizeX,sizeY);
m_RttDepthBuffer = CreateDepthTexture(sizeX,sizeY);
//get the camera node and do some initialization
m_RttCamera = new osg::Camera;
m_RttCamera-setReferenceFrame(osg::Transform::ABSOLUTE_RF);
m_RttCamera-setClearMask(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
m_RttCamera-setViewport(0, 0, m_RttFrameBuffer-getTextureWidth(),
m_RttFrameBuffer-getTextureHeight());
m_RttCamera-setCullingMode(osg::CullSettings::VIEW_FRUSTUM_CULLING);
m_RttCamera-setCullingActive(true);
// Frame buffer objects are the best option
m_RttCamera-setRenderTargetImplementation(osg::Camera::PIXEL_BUFFER_RTT);
// We need to render to the texture BEFORE we render to the screen
m_RttCamera-setRenderOrder(osg::Camera::PRE_RENDER);
// The camera will render into the texture that we created earlier
m_RttCamera-attach(osg::Camera::COLOR_BUFFER, m_RttFrameBuffer.get());
m_RttCamera-attach(osg::Camera::DEPTH_BUFFER, m_RttDepthBuffer.get());
// Set the view transform of the camera
m_RttCamera-setViewMatrixAsLookAt(osg::Vec3(1.0f, 0.0f, -1.0f),
osg::Vec3(278.1f,
982.1f, -1.0f), osg::Vec3(0.0f, 0.0f, 1.0f));
m_RttCamera-setProjectionMatrixAsPerspective(3.0,1.0,20.0,5.0);
m_RttCamera-setComputeNearFarMode(osg::CullSettings::
DO_NOT_COMPUTE_NEAR_FAR);
// Add whatever children you want drawn to the texture
m_RttCamera-addChild(SceneRoot);
}
Brgs.
Ralf Stokholm
www.arenalogic.com
2009/3/9 Daniel Holz dani...@cm-labs.com
Hi osg-users,
is it possible to access the Z-Buffer content from a render pass 1 in the
shaders during a second render pass 2 if I do not clear the Z-Buffer content
in pass 1?
In my project I render my scene in pass 1 and set the clear mask for pass 2
to 0, hence not clearing neither the color nor the depth buffer:
pCamPass2-setClearMask(0);
Now, how do I read out the Z-Buffer content of the gpu for a given pixel in
the fragment shader of pass2?
Trying to read from gl_FragDepth did not work.
Any suggestions?
Cheers
Daniel
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Re: [osg-users] OSGDem Question
Hi Albert You can specify a default color as a command line parameter, I have experienced chrashed using this, but if you build from sources you can change the default color in the code. That worked for me. As far as I know the quadtree osgdem builds will always have a rootnode covering the entire area. Brgs. Ralf Stokholm www.arenalogic.com 2009/3/9 Albert osgfo...@tevs.eu Hello All, I'm attempting to generate some terrain data of south western Australia using OSGdem. I am using Erdas Imagine to create an Area Of Interest tiff file of Australia and then running the file through OSGDem. My question comes in the output portion. I notice OSGDem is outputting a black canvas background behind the terrain so that it forms a rectangular shape. Is there a way I can tell OSGDem not to do that or at least make that black background transparent, so I can seamlessly overlay the map I created over a lower resolution map of the world. I have attached a screen capture of the map (with black background) for your reference. Thanks in advance, Albert -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=8110#8110 ___ 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] NodeVisitor - how fast can it be ?
Hi Vladimir Im guessing you would still have a problem regarding costal areas, my bet would be that you would have many nodes that contain both water and land. Im guessing you should find a way to treat this on the pixel level. Either by encoding it in the texture or elevation data, or by using stencil texhniques. Brgs. Ralf Stokholm www.arenalogic.com 2009/1/11 Jean-Sébastien Guay jean-sebastien.g...@cm-labs.com Hello Vladimir, So I wrote NodeVisitor that returns a NodeList of nodes that matching a certain name. But I'm afraid such approach is far not the best (and definitely not so fast, because in depth there's a strcomp() somewhere). Well, if your NodeVisitor runs in the frame loop of course it's probably not best way... The solution might be to only run the visitor at startup (when loading the terrain), and save the list of node pointers it returns for later. This will work fine if your terrain doesn't change. If there's a possibility that your terrain changes, then you can always run the visitor only when the terrain changes, so (if the visitor is really slow) you might get a frame hit at that time but after that it will be fine. In any case, apart from these ideas on how to do things better, for any performance concern like this one, the general guidelines apply: 1. Profile the code and see if it's using up a significant amount of time. If not, then don't waste time optimizing it. 2. If you get a solid 60Hz, it's not worth wasting time optimizing this. Hope this helps, J-S -- __ Jean-Sebastien Guayjean-sebastien.g...@cm-labs.com http://www.cm-labs.com/ http://whitestar02.webhop.org/ ___ 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] [CMake] Output directory for builds
Hi Sukender
from osgmacroutils.cmake around line 160 osg 2.6.1
IF(OSG_MSVC_VERSIONED_DLL)
#this is a hack... the build place is set to lib/debug or
release by LIBARARY_OUTPUT_PATH equal to OUTPUT_LIBDIR
#the .lib will be crated in ../ so going straight in lib by
the IMPORT_PREFIX property
#because we want dll placed in OUTPUT_BINDIR ie the bin
folder sibling of lib, we can use ../../bin to go there,
#it is hardcoded, we should compute OUTPUT_BINDIR position
relative to OUTPUT_LIBDIR ... to be implemented
#changing bin to something else breaks this hack
#the dll are placed in bin/${OSG_PLUGINS}
IF(NOT MSVC_IDE)
SET_TARGET_PROPERTIES(${TARGET_TARGETNAME} PROPERTIES
PREFIX ../bin/${OSG_PLUGINS}/)
ELSE(NOT MSVC_IDE)
SET_TARGET_PROPERTIES(${TARGET_TARGETNAME} PROPERTIES
PREFIX ../../bin/${OSG_PLUGINS}/ IMPORT_PREFIX ../)
ENDIF(NOT MSVC_IDE)
ELSE(OSG_MSVC_VERSIONED_DLL)
Brgs.
Ralf Stokholm
www.arenalogic.com
2009/1/4 Sukender suky0...@free.fr
(This is half-off-topic)
Hi all CMake experts,
I would like to know how OSG's CMake script generates all binaries in one
directory. I mean osgXX-osg.dll (release) and osgXX-osgd.dll (debug) are
both generated in /bin, but if I write something like
SET (CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/bin)
(same for CMAKE_*_OUTPUT_DIRECTORY)
in another project, then I got my binaries in /bin/Debug and /bin/Release.
Any idea?
Sukender
PVLE - Lightweight cross-platform game engine -
http://pvle.sourceforge.net/
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Re: [osg-users] Building VPB on Windows
Hi Michael For gdal on windows take a look at FWtools, it includes gdal and a lot of the plugins that you would have to build yourself. Brgs. Ralf Stokholm www.arenalogic.com 2008/12/24 christophe loustaunau christophe.loustau...@gmail.com Hi Michael, Cmake can't fing gdal and osg on your system. * *For gdal, you can find it here : http://www.gdal.org/* *For osg, you may have made an error with your Environment variable.You could add your lib path to the Environment variable path. Regards. On Wed, Dec 24, 2008 at 6:16 AM, Michael W. Hall hal...@att.net wrote: Attached you will find reported errors. Michael On Wed, 2008-12-24 at 00:58 +, Simon Hammett wrote: Well it's hard to give you any pointers if you don't supply the error messages... 2008/12/23 Michael W. Hall hal...@att.net: I just ran the configure utility. I am getting errors with CMake configure. Reports that a lot of the variables are set to not found. Windows XP BTW and Visual Studio 2005. Michael On Tue, 2008-12-23 at 15:33 -0600, Michael W. Hall wrote: I am trying to build VPB on my Windows machine. I get about 64 errors. I got the 2.6 version of OSG and I got the latest VPB from SVN. This could be my problem. I created all the Environment variables (i.e. OSG_ROOT, OSG_BIN_PATH, etc). When I tried a rebuild, it failed with the same errors. Could someone put me on track? Thanks, Michael ___ 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 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Christophe Loustaunau. ___ 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] Callback when loading nodes in the database pager
Hi Both Thanks for the hints, ReadFileCallback defenatly seams like it would solve most of my problem. How do I determine if the file loaded was part of my terrain or another specifik pagedLod dataset, and as such should be handled in the filecallback? Brgs. Ralf Stokholm 2008/12/19 Maciej Krol mack...@gmail.com Hi Ralf, Christophe We use ReadFileCallback to modify requested nodes from database pager. It works fine, but make sure Your code is thread safe. Regards, Maciej 2008/12/18 christophe loustaunau christophe.loustau...@gmail.com Hi Ralf, look at ReadFileCallback in the example osgCallBack, it may be what you wan't. Regards. On Thu, Dec 18, 2008 at 2:20 PM, Ralf Stokholm alfma...@arenalogic.com wrote: Hi List Is it possible to attach a callback to handle/modify loaded nodes in the database thread? Background: We are using VPB generatet terrain database in a delta3d application, to get the terrain mesh into our simulation we are using a cull visitor which takes care of loading loading and removing collision meshes from the physics engine when the accociatet node is generatet and removed. Even though this approach works well, it is rather slow and it annoys me that I have to dublikate bookkeeping which must already be implementet in the databasepager. I would also like to put the work in the database thread when possible. Is there any callbacks or similar for plugging in this code at the moment? Brgs. Ralf Stokholm. www.arenalogic.com ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Christophe Loustaunau. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Regards, Maciej Krol ___ 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
[osg-users] Callback when loading nodes in the database pager
Hi List Is it possible to attach a callback to handle/modify loaded nodes in the database thread? Background: We are using VPB generatet terrain database in a delta3d application, to get the terrain mesh into our simulation we are using a cull visitor which takes care of loading loading and removing collision meshes from the physics engine when the accociatet node is generatet and removed. Even though this approach works well, it is rather slow and it annoys me that I have to dublikate bookkeeping which must already be implementet in the databasepager. I would also like to put the work in the database thread when possible. Is there any callbacks or similar for plugging in this code at the moment? Brgs. Ralf Stokholm. www.arenalogic.com ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Framedrops in paged terrain databases windows XP
Hi List I have been fighting a studdering problem in my application for a while, my best guess at the moment is tht the problem is relatet to paging of large terrains. We are using a large terrain build using virtual planet builder. To test the behavior of this model i load it in osgviewer and I notice the same drops here, to get some better data on this i modified the stats class so that it will also collect max times for the various tasks, and changed it to show frame time and not FPS. I load the model in the viewer so that it is set up to strech across my two screens 1920x1200 and 1920x1080. I rarely see a frametime average above 10 ms, but when I experience the drops I have seen max frametimes as high as 160 ms. The connections seams to be with the last draw call that will increase its max time as high as 150 ms. So I guess my question is what could make my last draw reach so high, is the interaction with the database pager part of this draw? I have tried many different settings for the env values for the database pager, but although they make a difference on performance it dosent seam to affect the random framedrop. Im running on windows XP, core2 quad 3 Ghz 4 BG mem, terrain is running of a 2 TB raid 0 drive and I have a Nvidia GTX 280 graphics card. osg is version 2.6.1 Brgs Ralf Stokholm http://arenalogic.eu/air_combat_trainer.aspx ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Framedrops in paged terrain databases windows XP
Hi Robert Thanks for the swift answer. Will investigate some more and maby check out the new pager options once we get past our delivery in two days :-) Marcin How would not enabling vsync affect the pager? again framerate is not a problem its the extremely long frames we are seeing from time to time. Brgs. Ralf Stokholm www.arenalogic.com 2008/12/15 Robert Osfield robert.osfi...@gmail.com Hi Ralf, Frame drops like this are very likely down to either the OS's virtual memory being utilized or memory down on the GPU hitting a limit. I would had thought that frame drops are unlikely to down to the database pager itself, although it's management of memory may well be exacerbating the situation by not expiry subgraphs quick enough for their memory to be reused thus keeping the overall memory consumption below tollerable limits. The DatabasePager has lots of work done to it since 2.6.1, much of it in the area of expiry of subgraph and in particular there is new scheme that works to cap the total number of PagedLOD that are loaded in to memory, with the later 2.7.x dev releases and svn/trunk you can enable this new mode by setting the env var OSG_MAX_PAGEDLOD to a value such 500, the lower the value to lower you memory usage will be, but the less data will be kept in memory so that you revisit a region it won't be cached. It just so happens I'm currently working on making the new scheme the default setting for the DatabasePager. The next dev release will have this in place. Robert. On Mon, Dec 15, 2008 at 12:37 PM, Ralf Stokholm alfma...@arenalogic.com wrote: Hi List I have been fighting a studdering problem in my application for a while, my best guess at the moment is tht the problem is relatet to paging of large terrains. We are using a large terrain build using virtual planet builder. To test the behavior of this model i load it in osgviewer and I notice the same drops here, to get some better data on this i modified the stats class so that it will also collect max times for the various tasks, and changed it to show frame time and not FPS. I load the model in the viewer so that it is set up to strech across my two screens 1920x1200 and 1920x1080. I rarely see a frametime average above 10 ms, but when I experience the drops I have seen max frametimes as high as 160 ms. The connections seams to be with the last draw call that will increase its max time as high as 150 ms. So I guess my question is what could make my last draw reach so high, is the interaction with the database pager part of this draw? I have tried many different settings for the env values for the database pager, but although they make a difference on performance it dosent seam to affect the random framedrop. Im running on windows XP, core2 quad 3 Ghz 4 BG mem, terrain is running of a 2 TB raid 0 drive and I have a Nvidia GTX 280 graphics card. osg is version 2.6.1 Brgs Ralf Stokholm http://arenalogic.eu/air_combat_trainer.aspx ___ 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 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] VirtualPlantBuilder Ubuntu 64bit Quad Core only using single core
You need to call VPB with the vpbmaster exe to make use of multiple cores. Im not sure what version this is avaliable from, but if you use the rev. that matches osg 2.6 it will work. Brgs. Ralf 2008/11/4 Mark Yantek [EMAIL PROTECTED] OSG-USERS, My build of VirtualPlanetBuilder(VPB) 0.9.1 only utilizes one core out of the available four. Is there a way to tell VPB to use more than one core? I'm using Ubuntu 8.10 64-bit with an Intel quad core CPU. Thanks -Mark Yantek ___ 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] VPB bug or faulty data?
Hi Alejandro Im not 100% here, but I think you still need to specify some sort of projection basis, even plain lat lon uses some defenition of the geoid like WGS84 og similar. Natrally it could be a problem with you GTiff file. What version of VPB OSG are you using? Brgs. Ralf 2008/10/27 Alejandro Aguilar Sierra [EMAIL PROTECTED] Hi, Actually the data has no projections, it is in plain longitude/latitude coordinates. Which is the recomended projection for data about 1 or two degrees long so I can have it in kilometers? Regards, -- A. On Sun, Oct 26, 2008 at 2:04 AM, Ralf Stokholm [EMAIL PROTECTED] wrote: Hi Alejandro It seams you are missing projection information in the createt geotiff file. VPB needs some sort of projection system information in the input or you should specify the projection in the commandline for VPB It will be faster if you project your source data using ie gdalwarp, adal translate can also encode the projection data if its missing and you know what it should be. Brgs. Ralf Stokholm 2008/10/26 Alejandro Aguilar Sierra [EMAIL PROTECTED] Hello: I got DEM data from INEGI (Mexican Geographic Institute) and convert it to Geo Tiff. gdal_translate -of GTiff -co TILED=YES MDE-n20s19e097o099.bil volcanes.tif gdaladdo -r average volcanes.tif 2 4 8 16 32 gdalinfo volcanes.tif Warning 1: TIFFReadDirectory:volcanes.tif: Wrong StripByteCounts field, ignoring and calculating from imagelength Driver: GTiff/GeoTIFF Files: volcanes.tif Size is 7200, 3600 Coordinate System is `' Origin = (-99.000,20.000) Pixel Size = (0.0002778,-0.0002778) Image Structure Metadata: INTERLEAVE=BAND Corner Coordinates: Upper Left ( -99.000, 20.000) Lower Left ( -99.000, 19.000) Upper Right ( -97.000, 20.000) Lower Right ( -97.000, 19.000) Center ( -98.000, 19.500) Band 1 Block=256x256 Type=UInt16, ColorInterp=Gray NoData Value=0 Overviews: 3600x1800, 1800x900, 900x450, 450x225, 225x113 Warning 1: TIFFReadDirectory:volcanes.tif: Wrong StripByteCounts field, ignoring and calculating from imagelength If I try to create the terrain database this way I get only a line osgdem -d volcanes.tif -l 8 -v 1.0 -o volcanes.ive so I have to give approximate pixel size with xx and yy and it apparently works. osgdem --xx 33 --yy 33 -d volcanes.tif -l 8 -v 1.0 -o volcanes.ive Is there not enough information in the geotiff file? or this is a bug? Regards, -- A. ___ 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 ___ 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] VPB bug or faulty data?
Hi Alejandro You can use gdalwarp to (stamp) the projection information into you data. try using something similar to the following: //call gdalwarp to project my data to wgs84 //This will create a virtual raster (vrt) which does not copy the data of the original raster //but creates a sort of filter for reading the data. gdal_translate -of vrt -a_srs EPSG:4326 volcanes.tif volcanes.vrt //Then use the vrt as input osgdem -d volcanes.vrt -l 8 -v 1.0 -o kk EPSG:4326 is short form defenition of a basic lat lon coordinate system, same format you will receive ie landsat data in. Hope this helps. Brgs. Ralf Stokholm 2008/10/27 Robert Osfield [EMAIL PROTECTED] Hi Alejandro, Your data *is* the problem, please add the coordinate system info. Using the --xx etc options really is not a good solution going forward. Use properly set up data and things will work fine. Please go check out the gdal website for info on how to set up your data. As for VPB docs, I haven't had a chance to write full docs for all the utilities yet. There are some notes online. Robert. On Mon, Oct 27, 2008 at 4:43 PM, Alejandro Aguilar Sierra [EMAIL PROTECTED] wrote: Hi Robert and Umit, As probably you already read it, my data is georeferenced but has no projection info (plain latitude, l,ongitude). Using plain osgdem produces a wrong 1 dimension field (a line). osgdem -d volcanes.tif -l 8 -v 1.0 -o kk I have to give some approximated --xx and --yy data to make it work and even so it does wrongly, creating the mirror image in the Y direction, as you can see comparing the texture image with the produced terrain. Any hint? Where can I find documentation about vpbmaster, vpbcache and vpbsize? Regards, -- A. On Mon, Oct 27, 2008 at 3:40 AM, Robert Osfield [EMAIL PROTECTED] wrote: Hi Umit, On Mon, Oct 27, 2008 at 9:25 AM, Ümit Uzun [EMAIL PROTECTED] wrote: Thanks for clarification. But I remember that, VPB can manipulate only WGS84 referenced data. But it may be valid for only BlueMarble viewer. Sorry for wrong comment :) When building geocentric databases VPB reprojects the data into WGS84 and then builds the data, if you are using vpbmaster then you'll need to do this reprojection as a prior step to calling vpbmaster. The vpbcache utility can do this reprojection for you. If you are just using osgdem standalone then it can do the reprojection for you. The key is that your source data should have at least a projection that GDAL recognizes otherwise you end up having to build your own projection. GDAL has tools to allow you to do this. Robert. ___ 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 ___ 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] VPB bug or faulty data?
Hi Alejandro It seams you are missing projection information in the createt geotiff file. VPB needs some sort of projection system information in the input or you should specify the projection in the commandline for VPB It will be faster if you project your source data using ie gdalwarp, adal translate can also encode the projection data if its missing and you know what it should be. Brgs. Ralf Stokholm 2008/10/26 Alejandro Aguilar Sierra [EMAIL PROTECTED] Hello: I got DEM data from INEGI (Mexican Geographic Institute) and convert it to Geo Tiff. gdal_translate -of GTiff -co TILED=YES MDE-n20s19e097o099.bil volcanes.tif gdaladdo -r average volcanes.tif 2 4 8 16 32 gdalinfo volcanes.tif Warning 1: TIFFReadDirectory:volcanes.tif: Wrong StripByteCounts field, ignoring and calculating from imagelength Driver: GTiff/GeoTIFF Files: volcanes.tif Size is 7200, 3600 Coordinate System is `' Origin = (-99.000,20.000) Pixel Size = (0.0002778,-0.0002778) Image Structure Metadata: INTERLEAVE=BAND Corner Coordinates: Upper Left ( -99.000, 20.000) Lower Left ( -99.000, 19.000) Upper Right ( -97.000, 20.000) Lower Right ( -97.000, 19.000) Center ( -98.000, 19.500) Band 1 Block=256x256 Type=UInt16, ColorInterp=Gray NoData Value=0 Overviews: 3600x1800, 1800x900, 900x450, 450x225, 225x113 Warning 1: TIFFReadDirectory:volcanes.tif: Wrong StripByteCounts field, ignoring and calculating from imagelength If I try to create the terrain database this way I get only a line osgdem -d volcanes.tif -l 8 -v 1.0 -o volcanes.ive so I have to give approximate pixel size with xx and yy and it apparently works. osgdem --xx 33 --yy 33 -d volcanes.tif -l 8 -v 1.0 -o volcanes.ive Is there not enough information in the geotiff file? or this is a bug? Regards, -- A. ___ 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] VPB and multiple ive files...
vpbmaster is basically a server for osgdem. You can call it with the exact same commandline you use to call osgdem, it will then schedule all the builds and in addition use all the processors on your system for the build. It will not currently build osga databases but if my experiences hold you wont be able to generate a 30 gig osga anyway. my command line vpbmaster -t input_vrt -d input_dem -l 14 --TERRAIN --max-anisotropy 8.0 -o F:\dk_dem2\dk_dem.ive -Ralf 2008/10/9 Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC [EMAIL PROTECTED] I'm using 0.9.7 on Window XP SP 2. I'm using the command osgdem. What is VPB master? The database size is about 30gig... -Shayne -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ralf Stokholm Sent: Wednesday, October 08, 2008 3:40 PM To: OpenSceneGraph Users Subject: Re: [osg-users] VPB and multiple ive files... Shayne What version of VPB are you using? I have succesfully build a database using two different input datasets one overall covering app 15x10 deg around denmark to give some area in the surroundings. This is very low res. And the 40 cm orthofoto covering all of denmark. I found that it will fail on winxp 32 if I tryed it with older versions of VPB. I could not create a osga archive larger than 4 Gig. and for non archived .ive output the limit was around 10 Gig. Moving to a newer version of VPB and using VPB master I succeded in building the above mentioned database which is around 500Gig. As im typing this my PC is 25 hours into a build of the same data with added 10m dem for hight. still 12 hours to go :-) My experience is that preprojection the inputdata is a good thing. Hope this helps. Brgs. Ralf 2008/10/8 Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC [EMAIL PROTECTED] Ralf, I did try your suggested approach but VPB crashes with an exception. I'm assuming that I've reached the limits of VPB and that it can't handle the high resolution database (all 1 meter texture with level 1 DTED over a 2 degree by 2 degree region) along with building the --whole-globe option. If I do them separately, things seem to work fine. That's why I was wondering if I can build them separately and then merge them together. Eventually I would like to have several high res insets that I can merge in and out as need be rather than have one huge database... -Shayne -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ralf Stokholm Sent: Wednesday, October 08, 2008 3:14 PM To: OpenSceneGraph Users Subject: Re: [osg-users] VPB and multiple ive files... Hi Shayne From what I understand about your question, this is what VPB is build for, but in stead of chreating two ive*s you would simply feed the data to VPB and ass for a whole world output. VPB will then automatically handle merging your high resolution area into the whole globe terrain. Not sure if this was what you asked for Brgs. Ralf 2008/10/8 Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC [EMAIL PROTECTED] This may be a silly question but I was wondering if VPB supports stitching multiple ive files or databases together? In other words, can I build two separate ive files with VPB and then merge them together? I would like to build a whole earth model in one ive file and then merge in another ive file that has a high resolution inset so that the two are tied together. If this inquiry doesn't make sense or is incomplete, please accept my apologies. Thanks for the help in advance. -Shayne ___ 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 ___ 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] VPB and multiple ive files...
Hi Shayne From what I understand about your question, this is what VPB is build for, but in stead of chreating two ive*s you would simply feed the data to VPB and ass for a whole world output. VPB will then automatically handle merging your high resolution area into the whole globe terrain. Not sure if this was what you asked for Brgs. Ralf 2008/10/8 Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC [EMAIL PROTECTED] This may be a silly question but I was wondering if VPB supports stitching multiple ive files or databases together? In other words, can I build two separate ive files with VPB and then merge them together? I would like to build a whole earth model in one ive file and then merge in another ive file that has a high resolution inset so that the two are tied together. If this inquiry doesn't make sense or is incomplete, please accept my apologies… Thanks for the help in advance… -Shayne ___ 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] VPB and multiple ive files...
Shayne What version of VPB are you using? I have succesfully build a database using two different input datasets one overall covering app 15x10 deg around denmark to give some area in the surroundings. This is very low res. And the 40 cm orthofoto covering all of denmark. I found that it will fail on winxp 32 if I tryed it with older versions of VPB. I could not create a osga archive larger than 4 Gig. and for non archived .ive output the limit was around 10 Gig. Moving to a newer version of VPB and using VPB master I succeded in building the above mentioned database which is around 500Gig. As im typing this my PC is 25 hours into a build of the same data with added 10m dem for hight. still 12 hours to go :-) My experience is that preprojection the inputdata is a good thing. Hope this helps. Brgs. Ralf 2008/10/8 Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC [EMAIL PROTECTED] Ralf, I did try your suggested approach but VPB crashes with an exception. I'm assuming that I've reached the limits of VPB and that it can't handle the high resolution database (all 1 meter texture with level 1 DTED over a 2 degree by 2 degree region) along with building the --whole-globe option. If I do them separately, things seem to work fine. That's why I was wondering if I can build them separately and then merge them together. Eventually I would like to have several high res insets that I can merge in and out as need be rather than have one huge database... -Shayne -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ralf Stokholm Sent: Wednesday, October 08, 2008 3:14 PM To: OpenSceneGraph Users Subject: Re: [osg-users] VPB and multiple ive files... Hi Shayne From what I understand about your question, this is what VPB is build for, but in stead of chreating two ive*s you would simply feed the data to VPB and ass for a whole world output. VPB will then automatically handle merging your high resolution area into the whole globe terrain. Not sure if this was what you asked for Brgs. Ralf 2008/10/8 Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC [EMAIL PROTECTED] This may be a silly question but I was wondering if VPB supports stitching multiple ive files or databases together? In other words, can I build two separate ive files with VPB and then merge them together? I would like to build a whole earth model in one ive file and then merge in another ive file that has a high resolution inset so that the two are tied together. If this inquiry doesn't make sense or is incomplete, please accept my apologies. Thanks for the help in advance. -Shayne ___ 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 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Finding a paged lod root
Hi All When searching a directorystructure recursively, how do I easily identify a .ive file as a paged lod root, so that I may stop the recursive search? Backgruond: My project is based on delta3d. The map editor for delta3d (STAGE) will search the datadirectory and search for models which can be added to a map. My problem is that my VPB paged terrain database (3 mio files) is one of the models in that directory, and this means it will take forever to open the editor. I would like to add the option for the editor to stop its recursive search of a directory if it dertermines that an ive is the root of a paged lod hirachy, could anyone provide some code lines that would reveal this. Brgs. Ralf Stokholm ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osgscreencapture to videobuffer async
Hi All In our application we have added the option of capturing video from our playback stream. It works fine but performance is problematic. We are currently using a simple glReadPixels call to get the immage from the videocard, this takes around 5-6 ms in addition we append the immage to an AVI video stream this takes another 12 ms. It should be possible to put the 12 in another thread, but I was vondering if it would be possible to do the same with part of the glReadPixels call using PBO's. This is what I have in mind: From the Draw thread on initialrendercallback I would: glBindBuffer(GL_PIXEL_PACK_BUFFER_ARB, read_pbo) glReadPixels() //ASYNC SignalVideoThread() //Async and the in the video recorder thread when signaled glBindBuffer(GL_PIXEL_PACK_BUFFER_ARB, copy_pbo); GLubyte* src = (GLubyte*)ext-glMapBuffer(GL_PIXEL_PACK_BUFFER_ARB, GL_READ_ONLY_ARB); AVIStream.addframe(src) glUnmapBuffer(GL_PIXEL_PACK_BUFFER_ARB); glBindBuffer(GL_PIXEL_PACK_BUFFER_ARB, 0); Can someone tell me if this is feasable?, I was thinking that it would be problematic to do the gl calls from another thread? or should I use a compleately different approach? This is run on windowsXP, Core2 quad, Nvidia GX280 Brgs. Ralf Stokholm Arenalogic www.arenalogic.com ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgscreencapture to videobuffer async
Hi Robert / Jean Thanks for the responce I realise that glReadPixel has to be called by the drawthread, but as I understand it the advantage in using pixel buffer objects should be that glReadPixel would be async and therefore return in wery short time. The actual download and cost is then put on the glMapBuffer call. If this (glMapBuffer) was possible to do this in another thread then it would safe me 5-6 ms in my primary thread. If this is not possible then the value of the async glReadPixel seams to fall. Especially since it in many cases seams to be a bit slower than a simple glReadPixel; Brgs. Ralf 2008/9/25 Robert Osfield [EMAIL PROTECTED] Hi Ralf, You can only do the glReadPixel call from the graphics thread so you can't thread this, all you can do is hide the cost of download from the GPU by using a double buffered PBO, as the osgscreencapture example illustrates. To thread the writing of data you'll need to have a ring buffer of imagers that the draw thread writes to, and a background writing thread reads from. Robert. On Thu, Sep 25, 2008 at 2:57 PM, Ralf Stokholm [EMAIL PROTECTED] wrote: Hi All In our application we have added the option of capturing video from our playback stream. It works fine but performance is problematic. We are currently using a simple glReadPixels call to get the immage from the videocard, this takes around 5-6 ms in addition we append the immage to an AVI video stream this takes another 12 ms. It should be possible to put the 12 in another thread, but I was vondering if it would be possible to do the same with part of the glReadPixels call using PBO's. This is what I have in mind: From the Draw thread on initialrendercallback I would: glBindBuffer(GL_PIXEL_PACK_BUFFER_ARB, read_pbo) glReadPixels() //ASYNC SignalVideoThread() //Async and the in the video recorder thread when signaled glBindBuffer(GL_PIXEL_PACK_BUFFER_ARB, copy_pbo); GLubyte* src = (GLubyte*)ext-glMapBuffer(GL_PIXEL_PACK_BUFFER_ARB,GL_READ_ONLY_ARB); AVIStream.addframe(src) glUnmapBuffer(GL_PIXEL_PACK_BUFFER_ARB); glBindBuffer(GL_PIXEL_PACK_BUFFER_ARB, 0); Can someone tell me if this is feasable?, I was thinking that it would be problematic to do the gl calls from another thread? or should I use a compleately different approach? This is run on windowsXP, Core2 quad, Nvidia GX280 Brgs. Ralf Stokholm Arenalogic www.arenalogic.com ___ 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 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] CompositeViewer, update traversal, prerender branch
Hi Fabian Windows should handle a window that expands ower multiple devices, in our application we have a single graphicswindow set up on two screens, the graphics window is handmodified to position itself in the top left corner, 0,-1080 in this case and extends past both screens. I then set up two views each taking up the space of a single monitor, and disable the window decorator. I know there is a call to do the setup something like setupviewacrossalllscreens or so, but I havent experimentet with that yet. Good luck. Brgs Ralf Stokholm 2008/9/21 Fabian Bützow [EMAIL PROTECTED] Hi Robert, thanks for your help in this case and thanks for all your other replies, you have been a great source of motivation and advice. However, my problem has not been completely solved, yet. You were right, with the single graphics context and window for all views, the textures are updated now in each View. Cheers! The problem is, that i want to project the render result with 2 or 3 projectors onto an object, each projector with an individual View. Is it possible to extend the one graphics window over several screens/projectors? With that i could undo the window decoration and fake two independent views..? Otherwise i probably have to use multiple graphics windows and share the context (what id like to avoid, since you said that would cause even more problems). Cheers, Fabian ps: i try to summarise, my (restricted) knowledge of graphics window/context etc.. Maybe others can contribute to that as well. When you dont specify a graphics context for a View, osg generates a new unique one for each View. Graphics contexts comprise basically everything you need for standard rendering, buffers etc. The scene data of the View is copied. Each graphics context is displayed in a new graphics window. (One graphics context-one window, multiple Views-multiple graphics contexts-multiple graphics windows). An update traversal is done only once per scenegraph(?), starting from the View that is placed highest in the scenegraph. After that cull and draw traversals are executed for each View. [Prerender cameras nodes under a View in the scenegraph are rendered once for each View, the results of this step are not shared among the Views.] hmm-more assumptions than knowledge..i should better stop ;) ___ 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
[osg-users] VPB using shoreline / borders vector data to determine alpha
Hi Robert /List Would an option to use a shapefile containing ie. water bodies or borders to set the transparency of a terrain layer be feaseble? For my application it would be nice to use border vector data to eleminate data from one dataset and blend into another. It should also be relatively easy to extend a terrain with some nice looking ocean effects if the terrain would simply alphablen into the warter surface as determined by a shoreline shapefile? What are your thourghts on this? Brgs. Ralf Stokholm ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] VPB Status
Hi Robert Had some time to revisit this, and as you suggested is is possible to change the format of imagery generated if outputting to osg format. I tried the --image-ext jpeg option and it generated jpg files as expected, but to my surprise the generated output was larger than a similar dds output. I then spend some hours looking for creation options in the jpeg plug in and found the JPEG_QUALITY option. But it didn't do anything. This command line: vpbmaster -t input_vrt -l 4 --build-options JPEG_QUALITY 20 --image-ext jpeg -o dk2\dk.osg results in a database of exactly the same size as it was without the JPEG_QUALITY option. I even tried leaving it at default and then recompile the jpeg plugin to use 20 as default quality in place of 100, that didn't change anything either. Can you give me any hints on how to make this work? Brgs. Ralf Stokholm Arenalogic 2008/8/3 Robert Osfield [EMAIL PROTECTED] Hi Ralf, osgdem does support changing the output format of the imagery, but it may well need to be accompanied by outputting to .osg. I must admit I haven't tested this specific feature during my work on VirtualPlanetBuilder over the last year. Once OSG-2.6.0 is out I should have a chance at revisiting this specific feature. Robert. On Wed, Jul 30, 2008 at 1:56 PM, Ralf Stokholm [EMAIL PROTECTED] wrote: Hi Robert / all Thanks for the info on vpbmaster again, finally got around to trying it out. My data is in the ecw format and after some initial problems the trick about transforming them into vrt which is recommentet in another thread worked like a charm. Im currently building what will be a roughly 600 gig database 14 levels deep. I cant wait to see how it runs in my sim. :-) During my investigations I tried specifying different output formats like jpeg, I expected a jpeg database to be smaller than what is currently generatet, but it wassent. Is there no way of generating a database containing more compressed data than the default? I know it would propably hurt paging performance, but it might be worth it in may case. Brgs. Ralf ___ 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 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] VPB Status
Arrrgh sry On a rare occasion of brain activity i checked the timestamp on the jpeg plug in i build with the changed default quality and somehow my build must have failed. It now builds much more compressed jpeg's :-) The question that remains is how to channel the desired compression through vpb to the writer plug in because my command line doesn't seam to work. Additionally osg doesn't seam to work as an output, only the top level texture is shown i guess its because vpb was changed to use sub folders but the jpegs are all pleased in the root. This is not a big issue though as I just checked that the jpegs can be embedded in the ive's as well. Gotta try to build a new terrain and test the paging performance of a database build with jpeg's Brgs. Ralf Stokholm Arenalogic 2008/8/24 Ralf Stokholm [EMAIL PROTECTED] Hi Robert Had some time to revisit this, and as you suggested is is possible to change the format of imagery generated if outputting to osg format. I tried the --image-ext jpeg option and it generated jpg files as expected, but to my surprise the generated output was larger than a similar dds output. I then spend some hours looking for creation options in the jpeg plug in and found the JPEG_QUALITY option. But it didn't do anything. This command line: vpbmaster -t input_vrt -l 4 --build-options JPEG_QUALITY 20 --image-ext jpeg -o dk2\dk.osg results in a database of exactly the same size as it was without the JPEG_QUALITY option. I even tried leaving it at default and then recompile the jpeg plugin to use 20 as default quality in place of 100, that didn't change anything either. Can you give me any hints on how to make this work? Brgs. Ralf Stokholm Arenalogic 2008/8/3 Robert Osfield [EMAIL PROTECTED] Hi Ralf, osgdem does support changing the output format of the imagery, but it may well need to be accompanied by outputting to .osg. I must admit I haven't tested this specific feature during my work on VirtualPlanetBuilder over the last year. Once OSG-2.6.0 is out I should have a chance at revisiting this specific feature. Robert. On Wed, Jul 30, 2008 at 1:56 PM, Ralf Stokholm [EMAIL PROTECTED] wrote: Hi Robert / all Thanks for the info on vpbmaster again, finally got around to trying it out. My data is in the ecw format and after some initial problems the trick about transforming them into vrt which is recommentet in another thread worked like a charm. Im currently building what will be a roughly 600 gig database 14 levels deep. I cant wait to see how it runs in my sim. :-) During my investigations I tried specifying different output formats like jpeg, I expected a jpeg database to be smaller than what is currently generatet, but it wassent. Is there no way of generating a database containing more compressed data than the default? I know it would propably hurt paging performance, but it might be worth it in may case. Brgs. Ralf ___ 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 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Challenge for DatabasePager and cameras with high zoom
Hi List Im working on a flightsimulator and have a wery high resolution orthophoto based terrain. One of my cameras is a targetingpod(TGP) camera with a very high zoom factor, to compensate for this I set the cameras lodscale to fit. This all works fine but the range based loading of lods could be optimised for the Targeting pod camera by basing it on the frustrum. The TGP will ofthen focus at the same spot for a loong time and will rearly have a high rate when changing focus. So I guess my questin is if it is viable to design the a special paging scheme based on not only range but also the direction of the camera. This could then substitute the normal range based paging for special applications like my TGP camera. Brgs. Ralf Stokholm Arenalogic ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Challenge for DatabasePager and cameras with high zoom
Hi Ulrich Havent tried that, is this a camera setting or will it affect my pilot view camera as well? Brgs. Ralf Stokholm 2008/8/22 Ulrich Hertlein [EMAIL PROTECTED] Ralf Stokholm wrote: One of my cameras is a targetingpod(TGP) camera with a very high zoom factor, to compensate for this I set the cameras lodscale to fit. This all works fine but the range based loading of lods could be optimised for the Targeting pod camera by basing it on the frustrum. The TGP will Did you try osg::LOD::setRangeMode(PIXEL_SIZE_ON_SCREEN)? /ulrich ___ 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] Challenge for DatabasePager and cameras with high zoom
Hi Robert Im using the setLodScale and that works fine solved the huge problems i had before. But based on my current understanding the range based lod scale is less than optimal for a camera with a large zoom that will only change its transformation in the world slowly. It will page in an enourmous amount on textures but will only ever display a small percentage. This sort of camera must be perfectly suited to a frustrum or screen based paging algorithm, and my question was if it in your oppinion was feasable in the current architecture to integrate this as an optional pagingalgorithm. Based on Ulrichs answer somethin similar might already exist though? Brgs. Ralf 2008/8/22 Robert Osfield [EMAIL PROTECTED] Hi Ralf, You can use LODScale to scale the LOD ranges to fit case where you want to zoom in. This can be done without modifying the scene graph at - just by setting the osg::Camera in question i.e mycamera-setLODScale(0.25); Robert. On Fri, Aug 22, 2008 at 8:52 AM, Ralf Stokholm [EMAIL PROTECTED] wrote: Hi List Im working on a flightsimulator and have a wery high resolution orthophoto based terrain. One of my cameras is a targetingpod(TGP) camera with a very high zoom factor, to compensate for this I set the cameras lodscale to fit. This all works fine but the range based loading of lods could be optimised for the Targeting pod camera by basing it on the frustrum. The TGP will ofthen focus at the same spot for a loong time and will rearly have a high rate when changing focus. So I guess my questin is if it is viable to design the a special paging scheme based on not only range but also the direction of the camera. This could then substitute the normal range based paging for special applications like my TGP camera. Brgs. Ralf Stokholm Arenalogic ___ 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 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osgdem performance...
Hi Shayne We too have had some problems with the terrain, but at the moment it seams to work fine. I have rearly seen any problems with osgviewer but in my actual application i have had studders etc. What sort of hardware are you using, I have a 40 gig 12 level database that renders perfectly on xp. But it seams that the threading scheme chosen on osgviewer makes a big difference on the timings that can be visualized in osgviewer as well. Cull pr. camera draw pr. context seams to work the best, but I guess that depends on the actual setup. At the moment we are not adding altitude data to the terrain, this has made a significant difference previously. Switching from a dual core to a quad core seamed to make a difference as well, on the dual core we were able to load both cores to 100% this does not happen on the quad? Hope some of this helps. Brgs. Ralf Stokholm Arenalogic 2008/8/14 Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC [EMAIL PROTECTED] I would like to get some feedback from users that might be rendering OSG terrain built with osgdem on Windows XP. Based on previous discussions, I understand that the terrain rendering on Windows does not have as good of performance as on Linux, however, I'm seeing abysmal frame rates when I'm rendering terrain on Windows. The paging performance is horrible. Perhaps it's the way I'm constructing my terrain or the setup in my OSG app…I'm not sure. While I don't understand the algorithm that is being used for OSG terrain, I would expect it to perform as good or somewhat close to other Windows based earth viewers such as NASA's WorldWind which seems to run just fine on Windows with large databases. For the record, here's the osgdem command I'm using to build the terrain… osgdem –TERRAIN –PagedLOD –geocentric –t dted –d texture –l 10 –o terrain/wasatch_utm.ive Any input on the matter would be appreciated… -Shayne ___ 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
[osg-users] VPB for osg 2.4
Hi All Anyone having succes with a specific version of VPB for osg 2.4? Im building on windowsXP using vpbmaster and it seams to start out fine but then stops loading the processors and uses a huge amount of memmory. It dosent really seam to stop again. Brgs. Ralf Stokholm Arenalogic ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] VPB for osg 2.4
Hi Robert Thanks for the promt answer. im afraid I cant upgrade to osg 2.6 right now, we are using delta3d and it is currently constrained to 2.4. I could try building using the latest tagged VPB 0.9.7 with OSG 2.3.6 would a dataset created with this combination work with osg 2.4? Brgs. Ralf 2008/8/12 Robert Osfield [EMAIL PROTECTED] On Tue, Aug 12, 2008 at 8:54 PM, Ralf Stokholm [EMAIL PROTECTED] wrote: Hi All Anyone having succes with a specific version of VPB for osg 2.4? I didn't tag a specific version of VPB for use with OSG. VPB is still in beta. I have to recommend using VPB svn trunk against OSG 2.6 for best stability. Im building on windowsXP using vpbmaster and it seams to start out fine but then stops loading the processors and uses a huge amount of memmory. It dosent really seam to stop again. This isn't really enough info to be able to guess what might be up. If you try out the VPB svn trunk and OSG 2.6, and then provide the build info that you've used when you've hit problems so that others can try to recreate it. Also try building databases under a Unix system, such as Linux, as the Windows file system really sucks at handling large datasets that VPB churns through, you'll find performance double or more with a decent file system. Robert. ___ 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] VPB for osg 2.4
Hi again Yea, i just went over the latest release branch on delta3d, and it seams like they have indeed made the change to osg 2.6 ... Im so sry i didnt bother to do this first. My only apology is that there was a series of postings on the delta3d forum a while back surgesting that making the switch to 2.6 was not trivial. Sry Fortunatly it will allow me to stay with VPB head once i make the switch to newest delta. Btw i succesfully build a 640 Gig dataset using vpb -r914 on windows XP so its not impossible on windows :) Brgs. Ralf 2008/8/12 Robert Osfield [EMAIL PROTECTED] Hi Ralf, It should be straight forward to recompile Delta3D against OSG 2.6, while it's isn't binary compatible with OSG 2.4 the API is very close and shouldn't introduce any porting issues. Robert. On Tue, Aug 12, 2008 at 9:19 PM, Ralf Stokholm [EMAIL PROTECTED] wrote: Hi Robert Thanks for the promt answer. im afraid I cant upgrade to osg 2.6 right now, we are using delta3d and it is currently constrained to 2.4. I could try building using the latest tagged VPB 0.9.7 with OSG 2.3.6 would a dataset created with this combination work with osg 2.4? Brgs. Ralf 2008/8/12 Robert Osfield [EMAIL PROTECTED] On Tue, Aug 12, 2008 at 8:54 PM, Ralf Stokholm [EMAIL PROTECTED] wrote: Hi All Anyone having succes with a specific version of VPB for osg 2.4? I didn't tag a specific version of VPB for use with OSG. VPB is still in beta. I have to recommend using VPB svn trunk against OSG 2.6 for best stability. Im building on windowsXP using vpbmaster and it seams to start out fine but then stops loading the processors and uses a huge amount of memmory. It dosent really seam to stop again. This isn't really enough info to be able to guess what might be up. If you try out the VPB svn trunk and OSG 2.6, and then provide the build info that you've used when you've hit problems so that others can try to recreate it. Also try building databases under a Unix system, such as Linux, as the Windows file system really sucks at handling large datasets that VPB churns through, you'll find performance double or more with a decent file system. Robert. ___ 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 ___ 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] osgdem and UTM terrain tiles...
You could try getting overlapping data, my experience is that if your input data have no overlaps it is likely to see artifacts on the boundaries. 2008/8/7 Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC [EMAIL PROTECTED] Using the GDAL tools, I've built a mosaic of terrain tiles that I'm stitching together using osgdem to create a terrain database. Each terrain tile uses a UTM mapping that is reprojected from a lat/long mapping. Unfortunately when I do the reprojection for each tile, the terrain tile gets slightly shifted so that when I stitch them all together using osgdem, I have discontinuities at each tile boundary in the finished terrain database. My question is, is there a way to avoid this nasty artifact using either GDAL or osgdem? Perhaps I need to resort to another tool to massage the data before handing it over to osgdem? Thanks for any input in advance… -Shayne ___ 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] VPB Status
Hi Robert Thanks for the info, will the osga option be enabled again prior to the release of vpb 1.0? althoúgh the current works fine im having the problem that after my 600 G dataset has been created (30 Hours on my quad core) it took another roughly 15-20 hours to copy it to an external ESATA harddrive using robocopy. :-o I know this is propable only a problem on windows, but I know that windows really hate working on folder structures with multi million files, so one big archive really works in this respect. As a workaround would increasing the --tile-image-size reduce the number of files for a similar size / detail dataset? Brgs. Ralf 2008/8/3 Robert Osfield [EMAIL PROTECTED] Hi Ralf, osgdem does support changing the output format of the imagery, but it may well need to be accompanied by outputting to .osg. I must admit I haven't tested this specific feature during my work on VirtualPlanetBuilder over the last year. Once OSG-2.6.0 is out I should have a chance at revisiting this specific feature. Robert. On Wed, Jul 30, 2008 at 1:56 PM, Ralf Stokholm [EMAIL PROTECTED] wrote: Hi Robert / all Thanks for the info on vpbmaster again, finally got around to trying it out. My data is in the ecw format and after some initial problems the trick about transforming them into vrt which is recommentet in another thread worked like a charm. Im currently building what will be a roughly 600 gig database 14 levels deep. I cant wait to see how it runs in my sim. :-) During my investigations I tried specifying different output formats like jpeg, I expected a jpeg database to be smaller than what is currently generatet, but it wassent. Is there no way of generating a database containing more compressed data than the default? I know it would propably hurt paging performance, but it might be worth it in may case. Brgs. Ralf ___ 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 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] VPB Status
Hi Robert / all Thanks for the info on vpbmaster again, finally got around to trying it out. My data is in the ecw format and after some initial problems the trick about transforming them into vrt which is recommentet in another thread worked like a charm. Im currently building what will be a roughly 600 gig database 14 levels deep. I cant wait to see how it runs in my sim. :-) During my investigations I tried specifying different output formats like jpeg, I expected a jpeg database to be smaller than what is currently generatet, but it wassent. Is there no way of generating a database containing more compressed data than the default? I know it would propably hurt paging performance, but it might be worth it in may case. Brgs. Ralf ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] VPB Status
Hi Robert Thanks for the update, will try experimenting with vpbmaster. Looking forward to the 1,0 stuff :-) Brgs. Ralf ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] VPB Status
Hi Robert / List What is the status of VPB, it seams like not much has happened the last quater? What is the best version of VPB to use with osg 2.4? At some point you mentioned that you would make a tutorial on the new master builder any idea when this might appear. Im sry if I sound impatient, but I have just gotten hold of app 300 Gigs of orthofoto and elevation data for my latest project and it would be nice with the distributed build option ;-) Brgs. Ralf ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] VirtualPlanetBuilder and pagedLOD chalenges my Targeting pod camera
Hi Im working on a flight simulator project and have been using VTP to generate a terrain for visualisation, The input data is 30m landsat orthofoto and 90 m nasa elevation data. In addition there are som higher resolution orthofoto for specifik target areaes dovn to 25 cm resolution. My application has a Targeting POD displaying in the cockpit in adition to the standart otw view, the problem is that I have a hard time getting it to run smothly. To keep good quality in the TGP view I had to increase the --radius-to-max-visible-distance-ratio from default 7 to 25 in order to get the orthophoto to load early enough in my zoomed targeting pod view. I I generate the terrain without height date it almost runs smooth at that setting, but with elevation data it studders all the time. Especially when turning my head. Im using the delta 3d engine and the allocate 4ms for paging opperations each frame. This is tested on a brand new system Core2 duo 3.0 Ghz 4 Gb RAM and a geforce 9800 GTX, it has a raid0 hard drive etc so I cant emagine this it the limiting factor. Oh its running windowsXP sry :( OSG is verison 2.2.0 and VTP is version 0.9.1 The aplication is rendered on 2 displays a 1920x1200 display for the cockpit TGP view is roughly 512x512 ans a 1920x1080 display for external view. The following is the command line used for generating the terrain archive. osgdem -d height -t texture -l 20 --radius-to-max-visible-distance-ratio 25 -v 1.1 --cs +proj=laea +lat_0=55.5 +lon_0=9.5 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs -o denmark.ive -a denmark.osga Is there any way of making the terrain load later in the OTW view? Or any other hints on what parameters to play around with to improve the performace of this? Brgs Ralf Stokholm ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] VirtualPlanetBuilder and pagedLOD chalenges my Targeting pod camera
Hi Robert Thx a lot for the swift answer. and sry for the acronyms. Im working on testing it on osg 2.4 and the SVN version of VTP. Will know more in a few days ( I hope) It sounds like I should defenatly try running it on a linux box, it will be quite a challenge though, havent spend much time with linux :( The reason I have to tweak the *--radius-to-max-visible-distance-ratio *variable is that one of my cameras are rendering for a Targeting Pod (One of those aiming devices for laser guided bombs that you see on Discovery) This camera has the ability to zoom in on the target arear vith i.e. a 1.5 degree field of view, this results in visual artifacts ( texture popping) because a given lod is simply visible from farther away. If i increase the *--radius-to-max-visible-distance-ratio *my normal out the vindow view, which is rendered on a second screen using the same data will load the same lods roughly 3 times too early. This camera uses a more normal 60 degree field of view, and wont have to load the lods at the same time. I have testet the database in osgViewer and it seams to run smoother, but if i set up the view to rotate cose to ground so the data rendered at any given time will change fast i still get studders/framedrops. Brgs. Ralf ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Problem with multiple windows and GLcontext I think
Hi All
Im getting a chrash when using a hardwaremesh defined in the open source
engine delta3d, I have postet this question on thir forum as well but so far
no one has answered and since this might be relatet to osg or opengl ill try
posting it here.
My application makes use of two windows window a shows a head down view of a
cockpit and window b shows a view of the outside. In the cockpit view I have
a MFD (multi function display) that are linked to a targeting pod camera.
This camera also renders the outside as seen through the targeting pod.
I resently started experimenting with AI and characters and my problem
showed up the first time the character was shown in both views at the same
time, it chrashes with an exception that (as far as I can see) originates in
the graphics driver. The problem is shown both on nvidia and ati graphics
cards.
The last point in the call stack that i have code for is this function.
void HardwareSubmeshDrawable::drawImplementation(osg::RenderInfo
renderInfo) const
{
//select the appropriate mesh
mHardwareModel-selectHardwareMesh(mMeshID);
osg::State state = *renderInfo.getState();
//bind the VBO's
state.disableAllVertexArrays();
const Extensions* glExt = getExtensions(state.getContextID(),true);
glExt-glBindBuffer(GL_ARRAY_BUFFER_ARB, mVertexVBO);
unsigned stride = 18 * sizeof(float);
#define BUFFER_OFFSET(x)((GLvoid*) (0 + ((x) * sizeof(float
state.setVertexPointer(3, GL_FLOAT, stride, BUFFER_OFFSET(0));
state.setNormalPointer(GL_FLOAT, stride, BUFFER_OFFSET(3));
state.setTexCoordPointer(0, 2, GL_FLOAT, stride, BUFFER_OFFSET(6));
state.setTexCoordPointer(1, 2, GL_FLOAT, stride, BUFFER_OFFSET(8));
state.setTexCoordPointer(2, 4, GL_FLOAT, stride, BUFFER_OFFSET(10));
state.setTexCoordPointer(3, 4, GL_FLOAT, stride, BUFFER_OFFSET(14));
//make the call to render
glExt-glBindBuffer(GL_ELEMENT_ARRAY_BUFFER_ARB, mIndexVBO);
glDrawElements(GL_TRIANGLES, mHardwareModel-getFaceCount() * 3,
(sizeof(CalIndex) 4) ?
GL_UNSIGNED_SHORT: GL_UNSIGNED_INT, (void*)(sizeof(CalIndex) *
mHardwareModel-getStartIndex()));
glExt-glBindBuffer(GL_ARRAY_BUFFER_ARB, 0);
glExt-glBindBuffer(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
// This data could potential cause problems
// so we clear it out here (i.e CEGUI incompatible)
state.setVertexPointer(NULL);
state.setNormalPointer(NULL);
state.setTexCoordPointer(0, NULL);
state.setTexCoordPointer(1, NULL);
state.setTexCoordPointer(2, NULL);
state.setTexCoordPointer(3, NULL);
}
From chat i can see the function is calle 3 times for each window to draw
the character and the only difference is in the GLContextId and other
context related members of state.
The chrash comes from this line.
glDrawElements(GL_TRIANGLES, mHardwareModel-getFaceCount() * 3,
(sizeof(CalIndex) 4) ?
GL_UNSIGNED_SHORT: GL_UNSIGNED_INT, (void*)(sizeof(CalIndex) *
mHardwareModel-getStartIndex()));
Can any of you see anything wrong with this code or give me a hint where to
look, there is no problem as long as im only rendering the character in one
window, I teste the behavior in a delta3d sample and if the character is
rendered in 2 windows at the same time it chrashes, if it is rendered in two
view's in the same window it works fine.
Brgs.
Ralf Stokholm
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