[osg-users] maxTime( OpenGL, OSG )
Hi OSG Users, I have been playing OSG for a year. And so far I have started to learn OpenGL formally. I mean I only stepped to Graphics World based on OpenGL maxTime( OpenGL, OSG ) ~= 1 year. So I wonder to know peoples OpenGL story on this site to guess how long do I need time to learn Graphics Terminology based on OpenGL. So what is your maxTime() function returned results to your main function ? :) Best Regards. -- Ümit Uzun ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Multi-threading bug related to Registry
Robert,
Note that Rick responded to your question although to the osg-users
Digest mail so it will probably not show as a follow up in your e-mail
box. See
http://lists.openscenegraph.org/pipermail/osg-users-openscenegraph.org/2
008-November/019505.html
Sorry for pushing you around, but I happen to be interested in the
outcome of this thread.
--
Roland
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf
Of Robert Osfield
Sent: dinsdag 25 november 2008 15:08
To: OpenSceneGraph Users
Subject: Re: [osg-users] Multi-threading bug related to Registry
Hi Rick,
Just to confirm the issue, if you enable Registry caching of
imagery and use paged databases that have external image
files, then you get
the below crash. If you don't use the Registry cache what happens?
How reliably does this crash occur?
My hypothisis is that the object cache is being cleared by
another thread just at the wrong time for this particular
section of .ive plugin. If it is correct then use of
Registry::readImage(...) that returns a Registry::ReadResult
rather than a Image* would be safe as ReadResult uses
ref_ptr internally.
Robert.
On Tue, Nov 25, 2008 at 1:49 PM, Rick Appleton
[EMAIL PROTECTED] wrote:
Sorry for the delay on this.
Here's some more information. Below is a complete callstack
which should be similar to when the issue happened. Basically
we are loading a Paged terrain database which uses IVE files
for data, and DDS textures for images. A quick search in OSG
reveals that osgDB::readImageFile is called from many plugin
loaders, so I suspect they would have the same issue.
osg48-osgDBd.dll!osgDB::Registry::readImageImplementation(cons
t
std::basic_stringchar,std::char_traitschar,std::allocatorc
har fileName=textures/TxMosaic.dds, const
osgDB::ReaderWriter::Options * options=0x01f0ceb8) Line 1706C++
osg48-osgDBd.dll!osgDB::Registry::readImage(const
std::basic_stringchar,std::char_traitschar,std::allocatorc
har fileName=textures/TxMosaic.dds, const
osgDB::ReaderWriter::Options * options=0x01f0ceb8) Line 217
+ 0x14 bytes C++
osg48-osgDBd.dll!osgDB::readImageFile(const
std::basic_stringchar,std::char_traitschar,std::allocatorc
har filename=textures/TxMosaic.dds, const
osgDB::ReaderWriter::Options * options=0x01f0ceb8) Line 43 +
0x1d bytes C++
osgdb_ived.dll!ive::DataInputStream::readImage(std::basic_stri
ngchar,std::char_traitschar,std::allocatorchar
filename=textures/TxMosaic.dds) Line 950 + 0x44 bytesC++
osgdb_ived.dll!ive::DataInputStream::readImage(ive::IncludeIma
geMode mode=IMAGE_REFERENCE_FILE) Line 1003 + 0x2c bytes C++
osgdb_ived.dll!ive::DataInputStream::readImage()
Line 976 + 0xc bytes C++
osgdb_ived.dll!ive::Texture2D::read(ive::DataInputStream *
in=0x00dbec2c) Line 54 + 0x8 bytes C++
osgdb_ived.dll!ive::DataInputStream::readStateAttribute()
Line 1159 + 0xc bytesC++
osgdb_ived.dll!ive::StateSet::read(ive::DataInputStream *
in=0x00dbec2c) Line 173 + 0x8 bytes C++
osgdb_ived.dll!ive::DataInputStream::readStateSet()
Line 1066 C++
osgdb_ived.dll!ive::Node::read(ive::DataInputStream
* in=0x00dbec2c) Line 124 + 0x8 bytes C++
osgdb_ived.dll!ive::Geode::read(ive::DataInputStream
* in=0x00dbec2c) Line 67 C++
osgdb_ived.dll!ive::DataInputStream::readNode()
Line 1507 + 0x2d bytes C++
osgdb_ived.dll!ive::Group::read(ive::DataInputStream
* in=0x00dbec2c) Line 74 + 0x8 bytes C++
osgdb_ived.dll!ive::DataInputStream::readNode()
Line 1499 + 0xc bytes C++
osgdb_ived.dll!ReaderWriterIVE::readNode(std::basic_istreamch
ar,std::char_traitschar fin={...}, const
osgDB::ReaderWriter::Options * options=0x01f0ceb8) Line 98 +
0xb bytesC++
osgdb_ived.dll!ReaderWriterIVE::readNode(const
std::basic_stringchar,std::char_traitschar,std::allocatorc
har file=veluwe.ive, const
osgDB::ReaderWriter::Options * options=0x01efeb88) Line 69 +
0x23 bytes C++
osg48-osgDBd.dll!osgDB::Registry::ReadNodeFunctor::doRead(osgD
B::ReaderWriter rw={...}) Line 1374 + 0x40 bytes C++
osg48-osgDBd.dll!osgDB::Registry::read(const
osgDB::Registry::ReadFunctor readFunctor={...}) Line 1527
+ 0x22 bytes C++
osg48-osgDBd.dll!osgDB::Registry::readImplementation(const
osgDB::Registry::ReadFunctor readFunctor={...}, bool
useObjectCache=true) Line 1596 + 0x13 bytes C++
osg48-osgDBd.dll!osgDB::Registry::readNodeImplementation(const
std::basic_stringchar,std::char_traitschar,std::allocatorc
har fileName=veluwe.ive, const
osgDB::ReaderWriter::Options * options=0x01efeb88) Line 1814
+ 0x57 bytes C++
osg48-osgDBd.dll!osgDB::Registry::readNode(const
std::basic_stringchar,std::char_traitschar,std::allocatorc
har
[osg-users] Character motion plugin (ReaderWriterBVH) in progress
Hi all, hi Cedric,
I'm just working on a plugin to read Biovision hierarchical files (.BVH) to
generate character motion animations. BVH format is widely used in Character
Studio of 3dsmax, Motion builder and other software. The plugin is based on
the latest osgAnimation library in the SVN version of OSG and will return a
osgAnimation::AnimationManager pointer if using readNodeFile().
The plugin builds the Skeleton/Bone tree within the HIERARCHY section of
a .bvh file and Animate/Channel within the MOTION section. Each Bone object
has a Vec3LinearChannel and a QuatSphericalLinearChannel linked to perform
translating and rotating. I'm not very familiar with the osgAnimation
nodekit but glad to see this structure works for me.
I was wondering to support a BvhNode in my osgModeling peoject before, but
found it better be a plugin for animation. A problem is, how to bind the
geometry models to the skeleton. Maybe we could have a bindingToNode()
function in the Skeleton class to find geodes matching names of bones and
add them as bones' children?
Attachment are the incomplete source file and a sample motion file (which
acts like the osganimationskinning example), not tested on Linux. The plugin
will draw lines as bones at present and I will make it an optional
functionality later. Just build the osgdb_bvh file and run osgviewer
example.bvh to see the result.
My thanks to Cedric and Jememy for their great (especially robust) work, and
I wish this ReaderWriterBVH plugin would be sent to osg-submissions soon
after I review it in a few days. Some of the results seem to have small
problems while reading BVH motions of human characters.
Best regards,
Wang Rui
#include osg/Notify
#include osgDB/FileNameUtils
#include osgDB/FileUtils
#include osgDB/Registry
#include osgAnimation/Bone
#include osgAnimation/Skeleton
#include osgAnimation/AnimationManager
class BvhMotionBuilder : public osg::Referenced
{
public:
typedef std::pairosg::ref_ptrosgAnimation::Bone, int JointNode;
typedef std::vectorJointNode JointList;
BvhMotionBuilder() {}
virtual ~BvhMotionBuilder() {}
static BvhMotionBuilder* instance()
{
static osg::ref_ptrBvhMotionBuilder s_library = new BvhMotionBuilder;
return s_library.get();
}
void buildHierarchy( osgDB::Input fr, int level, osgAnimation::Bone*
parent )
{
bool isRecognized = false;
if ( !parent ) return;
if ( fr.matchSequence(OFFSET %f %f %f) )
{
isRecognized = true;
++fr;
osg::Vec3 offset;
if ( fr.readSequence(offset) )
{
// Process OFFSET section
parent-setBindMatrixInBoneSpace(
osg::Matrix::translate(offset) );
if ( parent-getNumParents() level0 )
parent-getParent(0)-addChild( createRefGeometry(offset,
0.1) );
}
}
if ( fr.matchSequence(CHANNELS %i) )
{
isRecognized = true;
// Process CHANNELS section
int noChannels;
fr[1].getInt( noChannels );
fr += 2;
for ( int i=0; inoChannels; ++i )
{
// Process each channel
std::string channelName;
fr.readSequence( channelName );
alterChannel( channelName, _joints.back().second );
}
}
if ( fr.matchSequence(End Site {) )
{
isRecognized = true;
fr += 3;
if ( fr.matchSequence(OFFSET %f %f %f) )
{
++fr;
osg::Vec3 offsetEndSite;
if ( fr.readSequence(offsetEndSite) )
{
// Process End Site section
osg::ref_ptrosgAnimation::Bone bone = new
osgAnimation::Bone( parent-getName()+End );
bone-setBindMatrixInBoneSpace(
osg::Matrix::translate(offsetEndSite) );
bone-setDataVariance( osg::Object::DYNAMIC );
parent-addChild( bone );
parent-addChild( createRefGeometry(offsetEndSite, 0.1) );
}
}
fr.advanceOverCurrentFieldOrBlock();
}
if ( fr.matchSequence(ROOT %w {) || fr.matchSequence(JOINT %w {) )
{
isRecognized = true;
// Process JOINT section
osg::ref_ptrosgAnimation::Bone bone = new osgAnimation::Bone(
fr[1].getStr() );
bone-setDataVariance( osg::Object::DYNAMIC );
osgAnimation::AnimationUpdateCallback* cb =
dynamic_castosgAnimation::AnimationUpdateCallback*(
bone-getUpdateCallback() );
if ( cb ) cb-setName( bone-getName() );
parent-addChild( bone );
_joints.push_back( JointNode(bone, 0) );
int entry = fr[1].getNoNestedBrackets();
fr += 3;
while ( !fr.eof()
Re: [osg-users] Multi-threading bug related to Registry
HI Roland,
I did read the reply, and I have already reponded.
Robert.
On Fri, Nov 28, 2008 at 8:19 AM, Smeenk, R.J.M. (Roland)
[EMAIL PROTECTED] wrote:
Robert,
Note that Rick responded to your question although to the osg-users
Digest mail so it will probably not show as a follow up in your e-mail
box. See
http://lists.openscenegraph.org/pipermail/osg-users-openscenegraph.org/2
008-November/019505.html
Sorry for pushing you around, but I happen to be interested in the
outcome of this thread.
--
Roland
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf
Of Robert Osfield
Sent: dinsdag 25 november 2008 15:08
To: OpenSceneGraph Users
Subject: Re: [osg-users] Multi-threading bug related to Registry
Hi Rick,
Just to confirm the issue, if you enable Registry caching of
imagery and use paged databases that have external image
files, then you get
the below crash. If you don't use the Registry cache what happens?
How reliably does this crash occur?
My hypothisis is that the object cache is being cleared by
another thread just at the wrong time for this particular
section of .ive plugin. If it is correct then use of
Registry::readImage(...) that returns a Registry::ReadResult
rather than a Image* would be safe as ReadResult uses
ref_ptr internally.
Robert.
On Tue, Nov 25, 2008 at 1:49 PM, Rick Appleton
[EMAIL PROTECTED] wrote:
Sorry for the delay on this.
Here's some more information. Below is a complete callstack
which should be similar to when the issue happened. Basically
we are loading a Paged terrain database which uses IVE files
for data, and DDS textures for images. A quick search in OSG
reveals that osgDB::readImageFile is called from many plugin
loaders, so I suspect they would have the same issue.
osg48-osgDBd.dll!osgDB::Registry::readImageImplementation(cons
t
std::basic_stringchar,std::char_traitschar,std::allocatorc
har fileName=textures/TxMosaic.dds, const
osgDB::ReaderWriter::Options * options=0x01f0ceb8) Line 1706C++
osg48-osgDBd.dll!osgDB::Registry::readImage(const
std::basic_stringchar,std::char_traitschar,std::allocatorc
har fileName=textures/TxMosaic.dds, const
osgDB::ReaderWriter::Options * options=0x01f0ceb8) Line 217
+ 0x14 bytes C++
osg48-osgDBd.dll!osgDB::readImageFile(const
std::basic_stringchar,std::char_traitschar,std::allocatorc
har filename=textures/TxMosaic.dds, const
osgDB::ReaderWriter::Options * options=0x01f0ceb8) Line 43 +
0x1d bytes C++
osgdb_ived.dll!ive::DataInputStream::readImage(std::basic_stri
ngchar,std::char_traitschar,std::allocatorchar
filename=textures/TxMosaic.dds) Line 950 + 0x44 bytesC++
osgdb_ived.dll!ive::DataInputStream::readImage(ive::IncludeIma
geMode mode=IMAGE_REFERENCE_FILE) Line 1003 + 0x2c bytes C++
osgdb_ived.dll!ive::DataInputStream::readImage()
Line 976 + 0xc bytes C++
osgdb_ived.dll!ive::Texture2D::read(ive::DataInputStream *
in=0x00dbec2c) Line 54 + 0x8 bytes C++
osgdb_ived.dll!ive::DataInputStream::readStateAttribute()
Line 1159 + 0xc bytesC++
osgdb_ived.dll!ive::StateSet::read(ive::DataInputStream *
in=0x00dbec2c) Line 173 + 0x8 bytes C++
osgdb_ived.dll!ive::DataInputStream::readStateSet()
Line 1066 C++
osgdb_ived.dll!ive::Node::read(ive::DataInputStream
* in=0x00dbec2c) Line 124 + 0x8 bytes C++
osgdb_ived.dll!ive::Geode::read(ive::DataInputStream
* in=0x00dbec2c) Line 67 C++
osgdb_ived.dll!ive::DataInputStream::readNode()
Line 1507 + 0x2d bytes C++
osgdb_ived.dll!ive::Group::read(ive::DataInputStream
* in=0x00dbec2c) Line 74 + 0x8 bytes C++
osgdb_ived.dll!ive::DataInputStream::readNode()
Line 1499 + 0xc bytes C++
osgdb_ived.dll!ReaderWriterIVE::readNode(std::basic_istreamch
ar,std::char_traitschar fin={...}, const
osgDB::ReaderWriter::Options * options=0x01f0ceb8) Line 98 +
0xb bytesC++
osgdb_ived.dll!ReaderWriterIVE::readNode(const
std::basic_stringchar,std::char_traitschar,std::allocatorc
har file=veluwe.ive, const
osgDB::ReaderWriter::Options * options=0x01efeb88) Line 69 +
0x23 bytes C++
osg48-osgDBd.dll!osgDB::Registry::ReadNodeFunctor::doRead(osgD
B::ReaderWriter rw={...}) Line 1374 + 0x40 bytes C++
osg48-osgDBd.dll!osgDB::Registry::read(const
osgDB::Registry::ReadFunctor readFunctor={...}) Line 1527
+ 0x22 bytes C++
osg48-osgDBd.dll!osgDB::Registry::readImplementation(const
osgDB::Registry::ReadFunctor readFunctor={...}, bool
useObjectCache=true) Line 1596 + 0x13 bytes C++
osg48-osgDBd.dll!osgDB::Registry::readNodeImplementation(const
std::basic_stringchar,std::char_traitschar,std::allocatorc
har fileName=veluwe.ive, const
osgDB::ReaderWriter::Options * options=0x01efeb88) Line 1814
+ 0x57 bytes C++
osg48-osgDBd.dll!osgDB::Registry::readNode(const
Re: [osg-users] osgAudio / osgAL
Hi Sukender, On Thu, Nov 27, 2008 at 10:07 PM, Sukender [EMAIL PROTECTED] wrote: And maybe we should have a look to some other libs too, such as SFML ( http://www.sfml-dev.org )? This just adds more dependencies...include OpenAL so I'm not sure it's make things any simpler than just integrating with OpenAL ourselves. I would also try to keep things decoupled so items like a Manager would be something that is implementation dependent, rather that something that end user need worry about. Sorry I don't understand. Do you mean you're in favor of my second idea (having a kind of priorirty for sounds that the plugin would use to automatically turn on/off sounds to fit the limitation of the number of sources)? In my paragraph above I was referring to the desire to keep implementation details including any managers that might be written I don't have any strong opinions on the topic, others have far more experience with using audio in scene graphs, I was hoping that they would dive in and comment... Having a separate thread sounds fine to me. CPU is not used enough for audio! Maybe a good occlusion computation would add immersion; so I think a separate thread is better. Should there be audio update and cull/render traverals for the viewer then? Having the Viewer manage an audio traversal/and or threads for it wouldn't be difficult. Conceptually you render the audio in a similar way to you manage graphics so the the cull/draw for graphics and cull/play for audio could sit comfortably side by side. I'm also too busy to work on osgAudio, but I'd like to help as much as I can. We'll if neither have the time, and as no one else has dived into this topic to volunteer we will just have to be patient. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Videos of DBGS Trian3D
Hi Jean-Sébastien, Very nice stuff. I've looked through your sample databases, and it looks very good. I have a few questions: * Is the representation of trees configurable? Some situations might need only a billboard, others a cross of quads, others a more detailed tree model (LODs with all three even?) You can certainly place any object you like (see below concerning building placement) and we are currently working on a billboard modifier for automatic billboard generation. But we don't do automatic plant generation, if you want a tree with LODs going from high-res over quad to billboard, you will have to define this by hand. * Why is the lowest LOD of your terrain a flat white quad? Couldn't it be a quad with the terrain texture at least? Or even a very low-poly version of the terrain, so we still get a general impression of the hills... It looks a bit weird when we zoom way out and it becomes a flat white plane. I see your point. In general this quad should not be seen at all, as it is only displayed when the last LOD is switched out. Normally there should not be anything, but we needed a dummy object so that the pager would start his work. We don't want to put the low-res LOD in the master (as I think it is done in VPB), as our terrains might be very large. There might be a better way to do this- any advice is appreciated. * Are the building models configurable too? If we have an in-house modeler, could he use his own building models (with LODs etc.) in Trian3D Builder? Sure you can place any objects according to various policies. You may place objects as local geometries (make e.g. groups of 200 trees and switch them in/out together) , internal reference (tree is in the file but referenced), external reference (points to external file e.g. airport). For building models with LODs you will have to use a reference policy. We (CM Labs) will have some people at I/ITSEC, so I've talked to them and they will go check your stuff out firsthand. Great I will write you another e-mail personally. Regards, Stephan -- - Stephan Kussmaul Geschaeftsfuehrender Gesellschafter / Managing Director TrianGraphics GmbH Schoenhauser Allee 45 10435 Berlin Germany Tel: +49 (0)30 48495565 FAX: +49 (0)30 48495581 Email: [EMAIL PROTECTED] Web: www.triangraphics.de - Sitz der Gesellschaft / Corporate Headquarters: TrianGraphics GmbH, Berlin Registereintragung / Registration: Amtsgericht Berlin-Charlottenburg HRB 93807 B Geschaeftsfuehrer / Managing Directors: Stephan Kussmaul, Mirco Nierenz, Volker Walkiewicz ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] VPB: osgdem ignoring vertical multiplier
HI Alejandro, I haven't tried the vertical exaggeration in osgdem/vpbmaster for a long time so I can't comment on whether it works or not. You'll need to dive into the code to see if some code paths are missing. As a general note, VPB works best generating osgTerrain based height fields, enabled via the --terrain option, if you use this option then you'll be able to vary the vertical scale at runtime via osgTerrain::Terrain::setVerticalScale(..). See of the osgmultitexturecontrol example. Robert. On Thu, Nov 27, 2008 at 10:50 PM, Alejandro Aguilar Sierra [EMAIL PROTECTED] wrote: Hello: I created a geotiff file with all necesary data. The resulting terrain, using osgdem, is correct. Now I'd like to exagerate the vertical scale in another model. I tried to force the vertical scale assigning a vertical multiplier -v 10.0 but osgdem ignores it. Any hint? Thanks in advance. -- 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] Videos of DBGS Trian3D
Very cool demonstration! I hope it goes as you wish! Regards, Can 2008/11/27 Stephan Kussmaul [EMAIL PROTECTED] Hi OSG Users, We have created a few new videos about our terrain generation software Trian3D. Maybe some of you like to see what we are doing with OSG. Here is the link to our website: www.triangraphics.de/index.php?1=Download2=Videosl=eng or if you prefer to watch them on YouTube (in modest quality though): www.youtube.com/user/TrianGraphics Any comments or suggestions are welcome. If anyone is interested in meeting me at the I/ITSEC, just let me know. Best regards and thanks to all OSG developers, Stephan -- - Stephan Kussmaul Geschaeftsfuehrender Gesellschafter / Managing Director TrianGraphics GmbH Schoenhauser Allee 45 10435 Berlin Germany Tel: +49 (0)30 48495565 FAX: +49 (0)30 48495581 Email: [EMAIL PROTECTED] Web: www.triangraphics.de - Sitz der Gesellschaft / Corporate Headquarters: TrianGraphics GmbH, Berlin Registereintragung / Registration: Amtsgericht Berlin-Charlottenburg HRB 93807 B Geschaeftsfuehrer / Managing Directors: Stephan Kussmaul, Mirco Nierenz, Volker Walkiewicz ___ 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] maxTime( OpenGL, OSG )
Hi Umit, My first experience with OpenGL was in the mid nineties, but prior to this I used IrisGL which was SGI's predecessor - I started learning this back in 92 at the same time I started using C++. I'm still learning both OpenGL and C++ :-) The OSG... well I picked up and started coding on Don Burn's little sg project that became the OSG back in 98. I'm still learning about the OSG now. Robert. On Fri, Nov 28, 2008 at 8:02 AM, Ümit Uzun [EMAIL PROTECTED] wrote: Hi OSG Users, I have been playing OSG for a year. And so far I have started to learn OpenGL formally. I mean I only stepped to Graphics World based on OpenGL maxTime( OpenGL, OSG ) ~= 1 year. So I wonder to know peoples OpenGL story on this site to guess how long do I need time to learn Graphics Terminology based on OpenGL. So what is your maxTime() function returned results to your main function ? :) Best Regards. -- Ümit Uzun ___ 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] Processing model
Hi Forest, The osgViewer's DrawThreadPerContext and CullThreadPerCameraDrawThreadPerContext models both overlap the update and cull with the draw dispatch. As for you cull and draw times being large, it most likely down to a poorly conditioned database. There are lots and lots of tricks one can do to optimize scene graphs - a topic that has been covered lots of time on osg-users so have a dig through the archives. Robert. On Fri, Nov 28, 2008 at 8:21 AM, forest37 [EMAIL PROTECTED] wrote: hi all, I find that when I have a large scene to render,the cull and draw time is so long that the program can't be interactive.I an wondering whether there is a processing model which processes the cull and draw time simultaneity.That is to say the first frame's draw() runs in the second frame .there is a picture Figure 6 - Multithreaded phase model for multidisplay system with CULL and DRAW as separate threads in the article A New Processing Model for Multithreaded, Multidisplay Scene Graphs at http://andesengineering.com/OSG_ProducerArticles/OSGMP/index.html Is there a thread model in osg can achieve that? Thanks in advance best regards forest [广告] 重奖 悬赏kfc3v3 球衣 ___ 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] maxTime( OpenGL, OSG )
Hi Umit, My first experience with OpenGL was in about 1992, the opengl version is 1.0 Beta,but prior to this I used IrisGL which was SGI's predecessor Professional Graphics ternimation in VAX-11. zhuwan 2008,11,28<[EMAIL PROTECTED]><[EMAIL PROTECTED]>原始邮件发件人:[EMAIL PROTECTED]发送时间:2008-11-28 17:11:57收件人:osg-users@lists.openscenegraph.org抄送人:(无)主题:Re: [osg-users] maxTime( OpenGL, OSG ) Hi Umit, My first experience with OpenGL was in the mid nineties, but prior to this I used IrisGL which was SGI's predecessor - I started learning this back in 92 at the same time I started using C++. I'm still learning both OpenGL and C++ :-) The OSG... well I picked up and started coding on Don Burn's little sg project that became the OSG back in 98. I'm still learning about the OSG now. Robert. On Fri, Nov 28, 2008 at 8:02 AM, Ümit Uzun [EMAIL PROTECTED] wrote: Hi OSG Users, I have been playing OSG for a year. And so far I have started to learn OpenGL formally. I mean I only stepped to Graphics World based on OpenGL maxTime( OpenGL, OSG ) ~= 1 year. So I wonder to know peoples OpenGL story on this site to guess how long do I need time to learn Graphics Terminology based on OpenGL. So what is your maxTime() function returned results to your main function ? :) Best Regards. -- Ümit Uzun ___ 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] maxTime( OpenGL, OSG )
Hi Umit, My first experience with OpenGL was in about 1992, the opengl version is 1.0 Beta,but prior to this I used IrisGL which was SGI's predecessor Professional Graphics ternimation in VAX-11. zhuwan 2008,11,28<[EMAIL PROTECTED]><[EMAIL PROTECTED]>Original MailFrom:[EMAIL PROTECTED]Send Time:2008-11-28 17:45:50To:osg-users@lists.openscenegraph.orgcc:(none)subject:Re: [osg-users] maxTime( OpenGL, OSG ) Hi Ümit, I've started at '98; but there has been a long break from 2001 to 2008. Never left C++ but there's always something you don't know in C++. I feel like a newbee when it comes to OpenGL. OSG is a 6 month story for me. But I'm very glad I've started using it. Regards, Can 2008/11/28 Robert Osfield [EMAIL PROTECTED] Hi Umit,My first experience with OpenGL was in the mid nineties, but prior tothis I used IrisGL which was SGI's predecessor - I started learningthis back in 92 at the same time I started using C++. I'm stilllearning both OpenGL and C++ :-)The OSG... well I picked up and started coding on Don Burn's little sgproject that became the OSG back in 98. I'm still learning about theOSG now.Robert. On Fri, Nov 28, 2008 at 8:02 AM, Ümit Uzun [EMAIL PROTECTED] wrote: Hi OSG Users, I have been playing OSG for a year. And so far I have started to learn OpenGL formally. I mean I only stepped to Graphics World based on OpenGL maxTime( OpenGL, OSG ) ~= 1 year. So I wonder to know peoples OpenGL story on this site to guess how long do I need time to learn Graphics Terminology based on OpenGL. So what is your maxTime() function returned results to your main function ? :) Best Regards. -- Ümit Uzun ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org___osg-users mailing listosg-users@lists.openscenegraph.orghttp://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] maxTime( OpenGL, OSG )
Hi Ümit, I've started at '98; but there has been a long break from 2001 to 2008. Never left C++ but there's always something you don't know in C++. I feel like a newbee when it comes to OpenGL. OSG is a 6 month story for me. But I'm very glad I've started using it. Regards, Can 2008/11/28 Robert Osfield [EMAIL PROTECTED] Hi Umit, My first experience with OpenGL was in the mid nineties, but prior to this I used IrisGL which was SGI's predecessor - I started learning this back in 92 at the same time I started using C++. I'm still learning both OpenGL and C++ :-) The OSG... well I picked up and started coding on Don Burn's little sg project that became the OSG back in 98. I'm still learning about the OSG now. Robert. On Fri, Nov 28, 2008 at 8:02 AM, Ümit Uzun [EMAIL PROTECTED] wrote: Hi OSG Users, I have been playing OSG for a year. And so far I have started to learn OpenGL formally. I mean I only stepped to Graphics World based on OpenGL maxTime( OpenGL, OSG ) ~= 1 year. So I wonder to know peoples OpenGL story on this site to guess how long do I need time to learn Graphics Terminology based on OpenGL. So what is your maxTime() function returned results to your main function ? :) Best Regards. -- Ümit Uzun ___ 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] Texture2D rendering problem
Hi all, I'm looking for a good advice to resolve a problem with a texture. My object uses 4 texture layers, a diffuse map and another 3 decal textures to represent a letter and optional visual complements. In a frontal point of view the texture renders ok (snapTexture1.jpg), but as I move the camera to a lateral view, a black margin appears (snaptexture2.jpg) I tried to change the filter mode using LINEAR and NEAREST for MIN_FILTER and MAG_FILTER, but the three decal textures are rendered in the same way. Has anybody faced this problem before? Suggestion welcome, thanks in advance, Iván. attachment: snapTexture1.jpgattachment: snapTexture2.jpg___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Texture2D rendering problem
Hi Arisonova, There isn't enough info about how you are setting up your scene graph to know precisely what the problem, and the image's aren't clear enough. So best I can do is make general suggestions. First up is learn about anisotropic filtering and clamp modes as these may well be part of the answer to your problem. The osgtexture2D examples shows these in action. Robert. On Fri, Nov 28, 2008 at 10:14 AM, Arisnova Arisnova [EMAIL PROTECTED] wrote: Hi all, I'm looking for a good advice to resolve a problem with a texture. My object uses 4 texture layers, a diffuse map and another 3 decal textures to represent a letter and optional visual complements. In a frontal point of view the texture renders ok (snapTexture1.jpg), but as I move the camera to a lateral view, a black margin appears (snaptexture2.jpg) I tried to change the filter mode using LINEAR and NEAREST for MIN_FILTER and MAG_FILTER, but the three decal textures are rendered in the same way. Has anybody faced this problem before? Suggestion welcome, thanks in advance, Iván. ___ 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 compile OSG with Dev-C++ and 3rdParty source in Cmake!
Thanks Luigi and Wang Rui. I'll download 3rdParty source.I now use eclipse(Qt + Dev-C++), I'll integate OSG and 3rdParty with in eclipse. YangXiao. --- 08年11月28日，周五, Luigi Calori [EMAIL PROTECTED] 写道： 发件人: Luigi Calori [EMAIL PROTECTED] 主题: Re: [osg-users] How to compile OSG with Dev-C++ and 3rdParty source in Cmake! 收件人: OpenSceneGraph Users osg-users@lists.openscenegraph.org 日期: 2008,1128,周五,6:19下午 I' m currently using CMake to build 3rdParty dependencies with VC7.1, if you want to see if it is working for mingw, get either http://3d.cineca.it/storage/packages/3rdPartySrc.zip ot http://3d.cineca.it/storage/packages/3rdPartySrc_packed.zip The latter require you unpack in place the original source zip. Hope it helps Luigi Wang Rui ha scritto: Hi YangXiao Maybe you should try to build required 3rd dependence with mingw (which is the default compiler of Dev-Cpp) first, and then build OSG with CMake. Wang Rui 2008/11/28 YangXiao [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] Hi Everyone: I already setup QT and Dev-C++ on my computer and integrate in Eclipse,But when i compile osg and 3rdParty ,I found only a Visual c++ 8 sp1 binary lib. How to compile OSG with Dev-C++ and 3rdParty source in Cmake? Someone can give me advices! Best regards. YangXiao 好玩贺卡等你发，邮箱贺卡全新上线！ http://cn.rd.yahoo.com/mail_cn/tagline/card/*http://card.mail.cn.yahoo.com/ ___ osg-users mailing list osg-users@lists.openscenegraph.org mailto: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 ___ 好玩贺卡等你发，邮箱贺卡全新上线！ http://card.mail.cn.yahoo.com/___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] How to compile OSG with Dev-C++ and 3rdParty source in Cmake!
I' m currently using CMake to build 3rdParty dependencies with VC7.1, if you want to see if it is working for mingw, get either http://3d.cineca.it/storage/packages/3rdPartySrc.zip ot http://3d.cineca.it/storage/packages/3rdPartySrc_packed.zip The latter require you unpack in place the original source zip. Hope it helps Luigi Wang Rui ha scritto: Hi YangXiao Maybe you should try to build required 3rd dependence with mingw (which is the default compiler of Dev-Cpp) first, and then build OSG with CMake. Wang Rui 2008/11/28 YangXiao [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] Hi Everyone: I already setup QT and Dev-C++ on my computer and integrate in Eclipse,But when i compile osg and 3rdParty ,I found only a Visual c++ 8 sp1 binary lib. How to compile OSG with Dev-C++ and 3rdParty source in Cmake? Someone can give me advices! Best regards. YangXiao 好玩贺卡等你发，邮箱贺卡全新上线！ http://cn.rd.yahoo.com/mail_cn/tagline/card/*http://card.mail.cn.yahoo.com/ ___ osg-users mailing list osg-users@lists.openscenegraph.org mailto: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] Determine texture memory allocation size
Hi Jean-Sebastian, this counter thing or other queries of texture memory require that one load/unload the texture to see the difference. However I would like to have a method similar to glGetTexParameter or so, which gives me direct result. As far as I was bale to find additional info there is no such method in GL specifications ;( Hence my solution is just to compute the size based on internal format and resolution, using the implementation from osg::Image. For my purpose this seems to be enough. Thank you again. Cheers, art --- Jean-Sébastien Guay [EMAIL PROTECTED] schrieb am Fr, 28.11.2008: Von: Jean-Sébastien Guay [EMAIL PROTECTED] Betreff: Re: [osg-users] Determine texture memory allocation size An: [EMAIL PROTECTED], OpenSceneGraph Users osg-users@lists.openscenegraph.org Datum: Freitag, 28. November 2008, 2:11 Hi Art, Gordon, Sorry Opengl does not provide any such function or capability, you have to track this on your own I'm afraid OpenGL doesn't, but if you install nVidia's instrumented drivers, there are a large number of counters you can query for low-level things like this. I'm not sure there's a counter for the memory used by a single texture, it might just be total texture memory used by a context. But you can always load the texture using osgviewer --image and then the total texture memory used by the context *is* the texture memory used by your texture! :-) But other than using these instrumented drivers (and I think they're only for Windows, but I'm not sure, so see their site to be sure) I don't know another way. Hope this helps, J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] 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] maxTime( OpenGL, OSG )
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 [EMAIL PROTECTED] wrote: Hi Umit, My first experience with OpenGL was in about 1992, the opengl version is 1.0 Beta,but prior to this I used IrisGL which was SGI's predecessor Professional Graphics ternimation in VAX-11. ^^ Hats off to that! Jan -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mandriva - http://enigmail.mozdev.org iD8DBQFJL+g7n11XseNj94gRAgoiAJ9G7/rL8gk4irC1OEJOywOTHAEavACgxV0s jPPTxXl2ktkH/HWK2ZIwYmc= =72dy -END PGP SIGNATURE- ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osg-users Digest, Vol 17, Issue 110
Hi Ivan,
Mailing list digest user are too often screwing up threading my doing
a reply to a digest post. So... if you want support please reply to
the original post's subject. I'm not going to reply to this broken
thread.
Robert.
On Fri, Nov 28, 2008 at 12:51 PM, Arisnova [EMAIL PROTECTED] wrote:
-- Mensaje reenviado --
From: Robert Osfield [EMAIL PROTECTED]
To: OpenSceneGraph Users osg-users@lists.openscenegraph.org
Date: Fri, 28 Nov 2008 10:54:14 +
Subject: Re: [osg-users] Texture2D rendering problem
Hi Arisonova,
There isn't enough info about how you are setting up your scene graph
to know precisely what the problem, and the image's aren't clear
enough. So best I can do is make general suggestions. First up is
learn about anisotropic filtering and clamp modes as these may well be
part of the answer to your problem. The osgtexture2D examples shows
these in action.
Robert.
Hi Robert,
Is a basic osgViewer::Viewer with a simple scene graph with one light. The
object is loaded from a osg file, and I mofify a StateSet to add thre more
texture unit, these is the original stateSet:
StateSet {
UniqueID StateSet_2
DataVariance STATIC
rendering_hint TRANSPARENT_BIN
renderBinMode USE
binNumber 10
binName DepthSortedBin
GL_CULL_FACE ON
GL_LIGHTING OVERRIDE|OFF
0xba1 ON
GL_BLEND ON
Material {
DataVariance STATIC
ColorMode OFF
ambientColor 0.941177 0.941177 0.941177 1
diffuseColor 1 1 1 1
specularColor 0 0 0 1
emissionColor 0 0 0 1
shininess 0
}
BlendFunc {
DataVariance STATIC
source SRC_ALPHA
destination ONE_MINUS_SRC_ALPHA
}
textureUnit 0 {
GL_TEXTURE_2D ON
Texture2D {
DataVariance STATIC
file images\estudioCompleteMap.png
wrap_s CLAMP_TO_EDGE
wrap_t CLAMP_TO_EDGE
wrap_r CLAMP_TO_EDGE
min_filter LINEAR_MIPMAP_LINEAR
mag_filter LINEAR
maxAnisotropy 1
borderColor 0 0 0 0
borderWidth 0
useHardwareMipMapGeneration TRUE
unRefImageDataAfterApply FALSE
internalFormatMode USE_ARB_COMPRESSION
resizeNonPowerOfTwo TRUE
}
}
}
, then I add three decal textuers in this way:
stateSet.setTextureAttributeAndModes(texId, new osg::Texture2D(image),
osg::StateAttribute::ON);
stateSet.setTextureAttribute(texId, new osg::TexEnv(osg::TexEnv::DECAL));
Anyway, I'm going to play around with anisotropic filtering and the clamp
modes as you suggest me.
Best regards,
Iván.
___
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] Render Bin, Transparency, ...
Sorry to insist, but I am surprised to see no answer ? Any suggestion or idea will be very appreciated. thanks a lot. Regards, Vincent 2008/11/28 Vincent Bourdier [EMAIL PROTECTED] Hi all, Looking in the archive I didn't found what I need, so this is the problem: I need to manage in the same scene : transparency nodes, skymap(s) (with transparency or not), normal (no-transparent) nodes. For the moment I apply on my skymaps the following code : osg::StateSet* state = myGeode-getOrCreateStateSet(); //Set sky render after objects, not depending on frustrum // Set texture mode to REPLACE osg::ref_ptrosg::TexEnv te = new osg::TexEnv; te-setMode(osg::TexEnv::REPLACE); state-setTextureAttributeAndModes(0, te.get(), osg::StateAttribute::ON); // Turn off lighting and cull face state-setMode(GL_CULL_FACE, osg::StateAttribute::OFF); osg::ref_ptrosg::Depth depth = new osg::Depth(osg::Depth::LEQUAL, 1.0, 1.0); state-setAttributeAndModes(depth.get(), osg::StateAttribute::ON); // Make pretty darn sure it is drawn first.(-1000) : it ensure that sky can be seen throw transparency surfaces state-setRenderBinDetails(-1000, RenderBin); myGeode-setCullingActive(false); But, I have some node with tranparency on the scene, and when I look the skymap, I see something not expected (see Attached file) Can you remember me what is the good rendering order ? and How to managed the skymaps and the transparent nodes Thanks a lot, Regards, Vincent. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osg-users Digest, Vol 17, Issue 110
-- Mensaje reenviado --
From: Robert Osfield [EMAIL PROTECTED]
To: OpenSceneGraph Users osg-users@lists.openscenegraph.org
Date: Fri, 28 Nov 2008 10:54:14 +
Subject: Re: [osg-users] Texture2D rendering problem
Hi Arisonova,
There isn't enough info about how you are setting up your scene graph
to know precisely what the problem, and the image's aren't clear
enough. So best I can do is make general suggestions. First up is
learn about anisotropic filtering and clamp modes as these may well be
part of the answer to your problem. The osgtexture2D examples shows
these in action.
Robert.
Hi Robert,
Is a basic osgViewer::Viewer with a simple scene graph with one light. The
object is loaded from a osg file, and I mofify a StateSet to add thre more
texture unit, these is the original stateSet:
StateSet {
UniqueID StateSet_2
DataVariance STATIC
rendering_hint TRANSPARENT_BIN
renderBinMode USE
binNumber 10
binName DepthSortedBin
GL_CULL_FACE ON
GL_LIGHTING OVERRIDE|OFF
0xba1 ON
GL_BLEND ON
Material {
DataVariance STATIC
ColorMode OFF
ambientColor 0.941177 0.941177 0.941177 1
diffuseColor 1 1 1 1
specularColor 0 0 0 1
emissionColor 0 0 0 1
shininess 0
}
BlendFunc {
DataVariance STATIC
source SRC_ALPHA
destination ONE_MINUS_SRC_ALPHA
}
textureUnit 0 {
GL_TEXTURE_2D ON
Texture2D {
DataVariance STATIC
file images\estudioCompleteMap.png
wrap_s CLAMP_TO_EDGE
wrap_t CLAMP_TO_EDGE
wrap_r CLAMP_TO_EDGE
min_filter LINEAR_MIPMAP_LINEAR
mag_filter LINEAR
maxAnisotropy 1
borderColor 0 0 0 0
borderWidth 0
useHardwareMipMapGeneration TRUE
unRefImageDataAfterApply FALSE
internalFormatMode USE_ARB_COMPRESSION
resizeNonPowerOfTwo TRUE
}
}
}
, then I add three decal textuers in this way:
stateSet.setTextureAttributeAndModes(texId, new osg::Texture2D(image),
osg::StateAttribute::ON);
stateSet.setTextureAttribute(texId, new osg::TexEnv(osg::TexEnv::DECAL));
Anyway, I'm going to play around with anisotropic filtering and the clamp
modes as you suggest me.
Best regards,
Iván.
___
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] FBO OpenGL Error with new nVidia Driver
I've just noticed that I've been getting some errors when I run osgprerender and also in my own program that uses a lot of pre-render cameras and FBOs.. Firstly I get: Warning: detected OpenGL error 'out of memory' after RenderBin::draw(,) Then the following printed continuously as the program is running: RenderStage::drawInner(,) FBO status= 0x8cd7 Warning: detected OpenGL errorNo= 0x506 after RenderBin::draw(,) I've tracked 0x506 to INVALID_FRAMEBUFFER_OPERATION_EXT which does seem odd, given that I'm running osgprerender which is a well established example. I put this down to the new nVidia driver as it seems to have occurred after that. Just wanted to know if anyone else was experiencing this. I'm running Vista Business 32bit using an nVidia 8800GTS 512mb card, driver version: 7.15.11.8048 * To view the terms under which this email is distributed, please go to http://www.hull.ac.uk/legal/email_disclaimer.html *___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Outline technique that doesn't triple (or worse) my frame time?
Hi J-S, Just as another datapoint, I also implemented outlining in a similar way to osgFX::Effect. All times stay the same except draw which triples. In my application, this doesn't affect me too much and I still make 60 fps if an object is selected or not, so I don't mind the jump that much, but I can see it being a problem if you have a very flexible scene/selection strategy... Cheers, Morne On Wed, Nov 26, 2008 at 2:40 PM, Jean-Sébastien Guay [EMAIL PROTECTED] wrote: Hi Robert, I presume that you won't be selecting too many objects in the scene, so it's not like you'll be doubling the cost of the whole scene, and if there is only one object in the scene that you select you are unlikely to be breaking frame... Well, that assumption is one I can't make... Since this is an application similar to a modeling application, the user could load anything up. And yes, we support multi-select, so the user could conceivably select the whole scene. Now, of course if the user loads objects which bring their system to a crawl, I can't do anything to prevent that. However, if they load up objects and the app just barely make frame, and then selects one of them and it suddenly breaks frame, it makes our app look bad. It's a contrived example, but it could really happen. And that's supposing they only select that one object - they could select them all, and then the total frame time might triple (I haven't tested this, but my results with multiple objects seem to indicate that would be the result). Anyways, the more general question: why is the frame time so affected by such a simple effect? As I said, it's a two-pass effect, I would expect the time for the selected object(s) to double, but not more... And I disable lighting, blending, texturing for the second pass, so I would think that pass would be quicker than the first. Thanks, J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] 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] Effects of locale setting
Selon Robert Osfield [EMAIL PROTECTED]: I get 2 glGetString( GL_VERSION ) returns 2.0.6958 Release OK, one bit of the jigsaw. What happens to the osg::getGLVersionNumber() value if you can the locale? For instance WxWidgets changes the locale by default I believe. Hi Robert, Sorry i didn't reply sooner (i lost internet access after problematic hardware upgrade). Anyway the OpenGL version string on my machine is now 2.1.7769 In a wxWidgets-based viewer, osg::getGLVersionNumber() returns 2.1 under C, fr_FR and [EMAIL PROTECTED] locales, but returns 2 when locale is fr_FR.UTF-8 (without wxWidgets it's always 2.1). Michael ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] FBO OpenGL Error with new nVidia Driver
After much installing and uninstalling I've found it's also present in the Vista 32-Bit GeForce releases 178.13, 178.24, 180.48. 175.19 work fine. Should I be concerned about these errors? K. From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kim C Bale Sent: 28 November 2008 13:33 To: OpenSceneGraph Users Subject: [osg-users] FBO OpenGL Error with new nVidia Driver I've just noticed that I've been getting some errors when I run osgprerender and also in my own program that uses a lot of pre-render cameras and FBOs.. Firstly I get: Warning: detected OpenGL error 'out of memory' after RenderBin::draw(,) Then the following printed continuously as the program is running: RenderStage::drawInner(,) FBO status= 0x8cd7 Warning: detected OpenGL errorNo= 0x506 after RenderBin::draw(,) I've tracked 0x506 to INVALID_FRAMEBUFFER_OPERATION_EXT which does seem odd, given that I'm running osgprerender which is a well established example. I put this down to the new nVidia driver as it seems to have occurred after that. Just wanted to know if anyone else was experiencing this. I'm running Vista Business 32bit using an nVidia 8800GTS 512mb card, driver version: 7.15.11.8048 * To view the terms under which this email is distributed, please go to http://www.hull.ac.uk/legal/email_disclaimer.html *___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Processing model
By default OSG 2.x uses a Draw thread and Cull thread per draw context, so your already have multi-process unless you set tings to run single thread As you do not define what a large scene, what frame rate you desire, it’s hard to say what the issue may be, and we have no idea of you hardware, memory, graphics, cpu, other things, window size, etc It highly likely you have a very flat scene graph that takes a lot of culling, you may simply have too much data for you systems capabilities, too many textures , you may be expecting too high a frame rate etc. I would suggest a search on the mailing list archives to look at discussion on how to optimize databases/models for real-time simulations there have been a lot of these discussion and search the web for the same Building Databases to run efficiently is a skill that has to be learned, and has to take in to all the components of your system, Memory, Graphics Card, Field of View, Near/Far Clip Plans, Screen(s) size(s), target frame rate, What the card can realistically handle, once you can quantify these things, then you have a estimate of the number of polygons you CAN have per frame. And this will chance for each different database When I taught Vega Prime/Creator classes I had a really nice spread sheet that you could place all these on other parameters in and it would tell you want your polygon budget etc was, unfortunately I cannot distribute this.. __ Capture the magic of Christmas this year see http://www.capturethemagic.com/ http://www.capturethemagic.com __ Gordon Tomlinson mailto:[EMAIL PROTECTED] [EMAIL PROTECTED] IM: mailto:[EMAIL PROTECTED] [EMAIL PROTECTED] http://www.vis-sim.com/ www.vis-sim.com http://www.gordontomlinson.com/ www.gordontomlinson.com __ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of forest37 Sent: Friday, November 28, 2008 3:21 AM To: osg-users@lists.openscenegraph.org Subject: [osg-users] Processing model hi all, I find that when I have a large scene to render,the cull and draw time is so long that the program can't be interactive.I an wondering whether there is a processing model which processes the cull and draw time simultaneity.That is to say the first frame's draw() runs in the second frame .there is a picture Figure 6 - Multithreaded phase model for multidisplay system with CULL and DRAW as separate threads in the article A New Processing Model for Multithreaded, Multidisplay Scene Graphs at http://andesengineering.com/OSG_ProducerArticles/OSGMP/index.html Is there a thread model in osg can achieve that? Thanks in advance best regards forest _ [广告] 重奖 http://popme.163.com/link/004584_1120_7027.html 悬赏kfc3v3 球 衣 attachment: image001.gif ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Render Bin, Transparency, ...
Yes, you're right. In france it was on 11.37am and 2.14pm ... Hoping someone can help me, I'll go on something else. Still waiting for you, and sorry for the inconvenience. Regards, Vincent. 2008/11/28 Gordon Tomlinson [EMAIL PROTECTED] Dude patience patience… your original post was 5.37am est. and then you post at 8.14am that your upset no one has replied, give things time most people in the US for one are not even online yet and it's a holiday for many And you have to remember there is NO guarantee any one will answer your question… See http://www.catb.org/~esr/faqs/smart-questions.htmlhttp://www.catb.org/%7Eesr/faqs/smart-questions.html __ *Capture the magic of Christmas this year see* * http://www.capturethemagic.com* __ *Gordon Tomlinson * [EMAIL PROTECTED] IM: [EMAIL PROTECTED] *www.vis-sim.com www.gordontomlinson.com* __ *From:* [EMAIL PROTECTED] [mailto: [EMAIL PROTECTED] *On Behalf Of *Vincent Bourdier *Sent:* Friday, November 28, 2008 8:14 AM *To:* osg *Subject:* Re: [osg-users] Render Bin, Transparency, ... Sorry to insist, but I am surprised to see no answer ? Any suggestion or idea will be very appreciated. thanks a lot. Regards, Vincent 2008/11/28 Vincent Bourdier [EMAIL PROTECTED] Hi all, Looking in the archive I didn't found what I need, so this is the problem: I need to manage in the same scene : transparency nodes, skymap(s) (with transparency or not), normal (no-transparent) nodes. For the moment I apply on my skymaps the following code : osg::StateSet* state = myGeode-getOrCreateStateSet(); //Set sky render after objects, not depending on frustrum // Set texture mode to REPLACE osg::ref_ptrosg::TexEnv te = new osg::TexEnv; te-setMode(osg::TexEnv::REPLACE); state-setTextureAttributeAndModes(0, te.get(), osg::StateAttribute::ON); // Turn off lighting and cull face state-setMode(GL_CULL_FACE, osg::StateAttribute::OFF); osg::ref_ptrosg::Depth depth = new osg::Depth(osg::Depth::LEQUAL, 1.0, 1.0); state-setAttributeAndModes(depth.get(), osg::StateAttribute::ON); // Make pretty darn sure it is drawn first.(-1000) : it ensure that sky can be seen throw transparency surfaces state-setRenderBinDetails(-1000, RenderBin); myGeode-setCullingActive(false); But, I have some node with tranparency on the scene, and when I look the skymap, I see something not expected (see Attached file) Can you remember me what is the good rendering order ? and How to managed the skymaps and the transparent nodes Thanks a lot, Regards, Vincent. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org image001.gif___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] maxTime( OpenGL, OSG )
Started with good old IrisGL back in the very early nineties on SGI hardware, used SGI Performer 1.x and moved up to Opengl as it was rolled out and used most scene graph technologies thru the years and of course worked on Vega and Vega Prime when I was at MPI, now working solely with OpenSceneGraph these days __ Capture the magic of Christmas this year see http://www.capturethemagic.com/ http://www.capturethemagic.com __ Gordon Tomlinson [EMAIL PROTECTED] IM: [EMAIL PROTECTED] www.vis-sim.com http://www.vis-sim.com/ www.gordontomlinson.com http://www.gordontomlinson.com/ __ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ümit Uzun Sent: Friday, November 28, 2008 3:03 AM To: OpenSceneGraph Users Subject: [osg-users] maxTime( OpenGL, OSG ) Hi OSG Users, I have been playing OSG for a year. And so far I have started to learn OpenGL formally. I mean I only stepped to Graphics World based on OpenGL maxTime( OpenGL, OSG ) ~= 1 year. So I wonder to know peoples OpenGL story on this site to guess how long do I need time to learn Graphics Terminology based on OpenGL. So what is your maxTime() function returned results to your main function ? :) Best Regards. -- Ümit Uzun attachment: image001.gif ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] maxTime( OpenGL, OSG )
Hello: I started in late eighties programming directly the VGA (I wrote a primitive raytracer for the 256 color mode) and phigs (a opengl predecessor). Then in the 90s I tried a bit OpenGL (I wrote a rubik cube simulator). Then for many years I was no more than an occasional 3d graphics user (mainly for visualization and gamming, doom and quake series). It was until two or three years ago that I restarted to program 3d graphics, first with Open Inventor, Open GL and now OSG and GLSL. Regards, -- A. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osgPPU and CUDA ;) !!!
Hi folks, whoever is interested in a combination of CUDA and osgPPU is asked to test current svn version under the sandbox branch of osgPPU repository. The implementation depends on both patches, I have submitted before. As soon as this patches are either commited or rejected I will merge the sandbox with current trunk branch. What is currently new in sandbox branch of osgPPU: - UnitInOutModule : loads a module (plugin) which is capable of processing input data of the Unit and create output data. In future release this can be extended to a plugin based Unit pipeline ;) - Unit : do now contain a possibility of using PBOs for GPU only transfers. Hence copying input texture to a PBO and back gives you a possibility to use the data in the PBO for further processing (think on modules/plugins e.g. CUDA plugin) - new example cuda: shows how to use a plugin (osgppu_cudakernel.so) to process the data. The plugin is a simple CUDA-Kernel which just blurs the incoming data What you need for new CUDA test: - at least CUDA 2.0 (nVidia drivers 177.80) - CUDA capable hardware (at least GeForce 8x) - both previous patches submitted to osg-submission before Best regards and have fun ;) !!! Art ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] FBO OpenGL Error with new nVidia Driver
Hi Kim, Im curious which OSG version you use ? Could this be that you have dual view setup ? Maybe you have the same error Marco Jez reported recently. You may try to change OSG_MULTIMONITOR_MULTITHREAD_WIN32_NVIDIA_WORKAROUND and see if it helps. Cheers, Wojtek - Original Message - From: Kim C Bale To: OpenSceneGraph Users Sent: Friday, November 28, 2008 3:42 PM Subject: Re: [osg-users] FBO OpenGL Error with new nVidia Driver After much installing and uninstalling I've found it's also present in the Vista 32-Bit GeForce releases 178.13, 178.24, 180.48. 175.19 work fine. Should I be concerned about these errors? K. From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kim C Bale Sent: 28 November 2008 13:33 To: OpenSceneGraph Users Subject: [osg-users] FBO OpenGL Error with new nVidia Driver I've just noticed that I've been getting some errors when I run osgprerender and also in my own program that uses a lot of pre-render cameras and FBOs.. Firstly I get: Warning: detected OpenGL error 'out of memory' after RenderBin::draw(,) Then the following printed continuously as the program is running: RenderStage::drawInner(,) FBO status= 0x8cd7 Warning: detected OpenGL errorNo= 0x506 after RenderBin::draw(,) I've tracked 0x506 to INVALID_FRAMEBUFFER_OPERATION_EXT which does seem odd, given that I'm running osgprerender which is a well established example. I put this down to the new nVidia driver as it seems to have occurred after that. Just wanted to know if anyone else was experiencing this. I'm running Vista Business 32bit using an nVidia 8800GTS 512mb card, driver version: 7.15.11.8048 -- * To view the terms under which this email is distributed, please go to http://www.hull.ac.uk/legal/email_disclaimer.html * -- ___ 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] maxTime( OpenGL, OSG )
Hi Umit, Take your time to get addicted to graphics :-) Me too, I have started in 1992 or so with OpenGL on the oh so nice Silicon Graphics Indigo (http://www.sgizone.net/indigo/) with which they worked when they were creating Jurassic Park... Some years later I worked with CAVEs with Performer and OpenGL. Currently, I am also still using OpenGL and OpenSceneGraph. I realized that it is very useful to understand the issues of videocards, and how they perform and thus influence performance. Also, I think it is always good to know pure OpenGL to work with OpenSceneGraph. Have fun! Regards Raymond Gordon Tomlinson wrote: Started with good old IrisGL back in the very early nineties on SGI hardware, used SGI Performer 1.x and moved up to Opengl as it was rolled out and used most scene graph technologies thru the years and of course worked on Vega and Vega Prime when I was at MPI, now working solely with OpenSceneGraph these days __ */Capture the magic of Christmas this year see/* *http://www.capturethemagic.com http://www.capturethemagic.com/* __ /Gordon Tomlinson / /[EMAIL PROTECTED] mailto:[EMAIL PROTECTED]/ IM: /[EMAIL PROTECTED] mailto:[EMAIL PROTECTED]/ /www.vis-sim.com http://www.vis-sim.com/ www.gordontomlinson.com http://www.gordontomlinson.com// __ *From:* [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] *On Behalf Of *Ümit Uzun *Sent:* Friday, November 28, 2008 3:03 AM *To:* OpenSceneGraph Users *Subject:* [osg-users] maxTime( OpenGL, OSG ) Hi OSG Users, I have been playing OSG for a year. And so far I have started to learn OpenGL formally. I mean I only stepped to Graphics World based on OpenGL maxTime( OpenGL, OSG ) ~= 1 year. So I wonder to know peoples OpenGL story on this site to guess how long do I need time to learn Graphics Terminology based on OpenGL. So what is your maxTime() function returned results to your main function ? :) Best Regards. -- Ümit Uzun ___ 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] maxTime( OpenGL, OSG )
My GL days started in the 90's My graphics started much earlier when I started working with such treasures as Z80,Z81, Commodore 64/Vic20, Amstrad, BBC computer,Acorn, TI 99/4a etc Working on games for all of these flavours, and those were the simple days of graphics :) Eventually getting to play with $16m SGI super-rack systems :), it was great I got paid to play with large SGI iron :) Now my $400 card has more general graphics power than those $16m beasts, apart from being able to handle and push data around it will be good when PC get the same speed and bandwidth that SGI's could and still can push around __ Capture the magic of Christmas this year see http://www.capturethemagic.com __ Gordon Tomlinson [EMAIL PROTECTED] IM: [EMAIL PROTECTED] www.vis-sim.com www.gordontomlinson.com __ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Raymond de Vries Sent: Friday, November 28, 2008 10:05 AM To: OpenSceneGraph Users Subject: Re: [osg-users] maxTime( OpenGL, OSG ) Hi Umit, Take your time to get addicted to graphics :-) Me too, I have started in 1992 or so with OpenGL on the oh so nice Silicon Graphics Indigo (http://www.sgizone.net/indigo/) with which they worked when they were creating Jurassic Park... Some years later I worked with CAVEs with Performer and OpenGL. Currently, I am also still using OpenGL and OpenSceneGraph. I realized that it is very useful to understand the issues of videocards, and how they perform and thus influence performance. Also, I think it is always good to know pure OpenGL to work with OpenSceneGraph. Have fun! Regards Raymond Gordon Tomlinson wrote: Started with good old IrisGL back in the very early nineties on SGI hardware, used SGI Performer 1.x and moved up to Opengl as it was rolled out and used most scene graph technologies thru the years and of course worked on Vega and Vega Prime when I was at MPI, now working solely with OpenSceneGraph these days __ */Capture the magic of Christmas this year see/* *http://www.capturethemagic.com http://www.capturethemagic.com/* __ /Gordon Tomlinson / /[EMAIL PROTECTED] mailto:[EMAIL PROTECTED]/ IM: /[EMAIL PROTECTED] mailto:[EMAIL PROTECTED]/ /www.vis-sim.com http://www.vis-sim.com/ www.gordontomlinson.com http://www.gordontomlinson.com// __ *From:* [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] *On Behalf Of *Ümit Uzun *Sent:* Friday, November 28, 2008 3:03 AM *To:* OpenSceneGraph Users *Subject:* [osg-users] maxTime( OpenGL, OSG ) Hi OSG Users, I have been playing OSG for a year. And so far I have started to learn OpenGL formally. I mean I only stepped to Graphics World based on OpenGL maxTime( OpenGL, OSG ) ~= 1 year. So I wonder to know peoples OpenGL story on this site to guess how long do I need time to learn Graphics Terminology based on OpenGL. So what is your maxTime() function returned results to your main function ? :) Best Regards. -- Ümit Uzun ___ 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] View::computeIntersections with a node path
Hi, Has anyone been able to successfully use osgViewer::View::computeIntersections() taking a node path argument on a non-trivial scenegraph? I currently have a fairly complex scenegraph, but I only want a small part of it to collide with computeIntersections. When I use computeIntersections without the nodepath, everything works perfectly. But as soon as I use the overload with the node path, I get an empty intersection set. I'm pretty sure the node path I'm giving is correct. Looking at the implementation of computeIntersections() with the node path, the only thing that puzzles me is the use of osg::computeWorldToLocal(nodePath) before computing the matrix inverse, I'm not sure I fully understand why this is the case. It seems to me the whole operation should be LocalToWorldMatrix * ViewMatrix * ProjectionMatrix instead. In any case, if anyone has a working example (which would show computeIntersections() with a node path is working correctly, or help finding the mistake I'm doing), it would be appreciated. Regards, Tanguy ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] maxTime( OpenGL, OSG )
Hi GL Gurus, That's all amazing stories :) When I learned about your histories and experiences with GL I feel myself already born infant :) I will give my as possible as much time to growing up myself, I hope I can get successful! Thank you so much masters for share your experiences with us. Best Regards. 2008/11/28 Gordon Tomlinson [EMAIL PROTECTED] My GL days started in the 90's My graphics started much earlier when I started working with such treasures as Z80,Z81, Commodore 64/Vic20, Amstrad, BBC computer,Acorn, TI 99/4a etc Working on games for all of these flavours, and those were the simple days of graphics :) Eventually getting to play with $16m SGI super-rack systems :), it was great I got paid to play with large SGI iron :) Now my $400 card has more general graphics power than those $16m beasts, apart from being able to handle and push data around it will be good when PC get the same speed and bandwidth that SGI's could and still can push around __ Capture the magic of Christmas this year see http://www.capturethemagic.com __ Gordon Tomlinson [EMAIL PROTECTED] IM: [EMAIL PROTECTED] www.vis-sim.com www.gordontomlinson.com __ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Raymond de Vries Sent: Friday, November 28, 2008 10:05 AM To: OpenSceneGraph Users Subject: Re: [osg-users] maxTime( OpenGL, OSG ) Hi Umit, Take your time to get addicted to graphics :-) Me too, I have started in 1992 or so with OpenGL on the oh so nice Silicon Graphics Indigo (http://www.sgizone.net/indigo/) with which they worked when they were creating Jurassic Park... Some years later I worked with CAVEs with Performer and OpenGL. Currently, I am also still using OpenGL and OpenSceneGraph. I realized that it is very useful to understand the issues of videocards, and how they perform and thus influence performance. Also, I think it is always good to know pure OpenGL to work with OpenSceneGraph. Have fun! Regards Raymond Gordon Tomlinson wrote: Started with good old IrisGL back in the very early nineties on SGI hardware, used SGI Performer 1.x and moved up to Opengl as it was rolled out and used most scene graph technologies thru the years and of course worked on Vega and Vega Prime when I was at MPI, now working solely with OpenSceneGraph these days __ */Capture the magic of Christmas this year see/* *http://www.capturethemagic.com http://www.capturethemagic.com/* __ /Gordon Tomlinson / /[EMAIL PROTECTED] mailto:[EMAIL PROTECTED]/ IM: /[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] / /www.vis-sim.com http://www.vis-sim.com/ www.gordontomlinson.com http://www.gordontomlinson.com// __ *From:* [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] *On Behalf Of *Ümit Uzun *Sent:* Friday, November 28, 2008 3:03 AM *To:* OpenSceneGraph Users *Subject:* [osg-users] maxTime( OpenGL, OSG ) Hi OSG Users, I have been playing OSG for a year. And so far I have started to learn OpenGL formally. I mean I only stepped to Graphics World based on OpenGL maxTime( OpenGL, OSG ) ~= 1 year. So I wonder to know peoples OpenGL story on this site to guess how long do I need time to learn Graphics Terminology based on OpenGL. So what is your maxTime() function returned results to your main function ? :) Best Regards. -- Ümit Uzun ___ 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 -- Ümit Uzun ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Videos of DBGS Trian3D
Hello Stephan, I see your point. In general this quad should not be seen at all, as it is only displayed when the last LOD is switched out. Normally there should not be anything, but we needed a dummy object so that the pager would start his work. We don't want to put the low-res LOD in the master (as I think it is done in VPB), as our terrains might be very large. There might be a better way to do this- any advice is appreciated. No, VPB does not do this. All files are referred to by PagedLOD nodes. So even the first level is an external file, and the master is just a file that refers to the first level files. Then the first level files refer to the second level files, etc. J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] 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
Re: [osg-users] FBO OpenGL Error with new nVidia Driver
Sorry yes, I'm using OSG 2.6, strangely enough it may well be linked to the dual monitor set up as you suggest. I've just tested this at home on an identical machine but without the extra monitor using driver 178.13 and i don't get the error. I'll try what you suggest on monday, and post the results. Cheers. Kim. From: [EMAIL PROTECTED] on behalf of Wojciech Lewandowski Sent: Fri 28/11/2008 14:59 To: OpenSceneGraph Users Subject: Re: [osg-users] FBO OpenGL Error with new nVidia Driver Hi Kim, Im curious which OSG version you use ? Could this be that you have dual view setup ? Maybe you have the same error Marco Jez reported recently. You may try to change OSG_MULTIMONITOR_MULTITHREAD_WIN32_NVIDIA_WORKAROUND and see if it helps. Cheers, Wojtek - Original Message - From: Kim C Bale mailto:[EMAIL PROTECTED] To: OpenSceneGraph Users mailto:osg-users@lists.openscenegraph.org Sent: Friday, November 28, 2008 3:42 PM Subject: Re: [osg-users] FBO OpenGL Error with new nVidia Driver After much installing and uninstalling I've found it's also present in the Vista 32-Bit GeForce releases 178.13, 178.24, 180.48. 175.19 work fine. Should I be concerned about these errors? K. From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kim C Bale Sent: 28 November 2008 13:33 To: OpenSceneGraph Users Subject: [osg-users] FBO OpenGL Error with new nVidia Driver I've just noticed that I've been getting some errors when I run osgprerender and also in my own program that uses a lot of pre-render cameras and FBOs.. Firstly I get: Warning: detected OpenGL error 'out of memory' after RenderBin::draw(,) Then the following printed continuously as the program is running: RenderStage::drawInner(,) FBO status= 0x8cd7 Warning: detected OpenGL errorNo= 0x506 after RenderBin::draw(,) I've tracked 0x506 to INVALID_FRAMEBUFFER_OPERATION_EXT which does seem odd, given that I'm running osgprerender which is a well established example. I put this down to the new nVidia driver as it seems to have occurred after that. Just wanted to know if anyone else was experiencing this. I'm running Vista Business 32bit using an nVidia 8800GTS 512mb card, driver version: 7.15.11.8048 * To view the terms under which this email is distributed, please go to http://www.hull.ac.uk/legal/email_disclaimer.html * ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org winmail.dat* To view the terms under which this email is distributed, please go to http://www.hull.ac.uk/legal/email_disclaimer.html *___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Please test SVN of OpenSceneGraph in pre for 2.7.6 dev release
Hi All, I've merged Jeremy's and Cedric's updates of osgWidget and osgAnimation into svn/trunk. This does mean we'll need another round of testing before I can tag 2.7.6. Assistance on this much appreciated ;-) Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Outline technique that doesn't triple (or worse) my frame time?
Hello Morné, Just as another datapoint, I also implemented outlining in a similar way to osgFX::Effect. All times stay the same except draw which triples. In my application, this doesn't affect me too much and I still make 60 fps if an object is selected or not, so I don't mind the jump that much, but I can see it being a problem if you have a very flexible scene/selection strategy... Yes, well, for now I've decided to just live with it, though I've been able to lower the times a bit by fixing a very stooopid bug! When adding the effect, we were not removing the child from its original parent. So if the graph looked like this before: parent | | child After adding the effect it looked like this: parent | \ | effect | / child Since the effect actually renders the child twice, because of not removing the child from its original parent, it was being rendered a total of 3 times, which explains the tripling of timings! I've fixed this, so now after adding the effect the only parent of the child node is the effect, and when removing the effect I re-add the child to the parent. The times are closer to double now (though still slightly higher than double - 0.4 becomes 0.9 - which I can't explain, since the outline pass disables most things, so it should theoretically be faster than the original render I would think) I just want to say in my defense that that code wasn't written by me! (though I've made that mistake in the past too) J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] 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
Re: [osg-users] Determine texture memory allocation size
Hi Art, As far as I was bale to find additional info there is no such method in GL specifications ;( Hence my solution is just to compute the size based on internal format and resolution, using the implementation from osg::Image. For my purpose this seems to be enough. It was not clear to me that you didn't want to load the texture... In that case, then yes, that's probably the best you can do. Although, if you just want to know how much space that texture will take to know in advance whether you should load it or not, then you can always do a pre-process where you have a program that loads the textures, checks the counters to see the real texture memory usage, and writes that to a file. Then in your main program check the size from the file before loading. J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] 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] VPB: Partial terrain with vpbmaster, why?
Hi, Building the same terrain, osgdem creates it complete but vpbmaster does just the first left chunk. Why? Am I missing some parameter? I used these commands, respectively: osgdem -d fv.tif -t fv_tx.tif -l 5 -v 20 -o fv.ive Elapsed time = 70.969066 vpbmaster -d fv.tif --layer 0 -t fv_tx.tif --layer 1 -t fv_gmt.tif --terrain -o fv2.ive Total elapsed time = 1.818129 All images are geotiff created with gdal from DEM data (etopo1) and height/palette tables. Thanks in advance and regards. -- A. attachment: with_osgdem.jpgattachment: with_vpbmaster.jpg___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Performance query : Drawing lots of instances of a vertex array
Dear All, I have a geometry with a simple heightfield type vertex array; I'm also using VBO. I want to repeat that VBO in quite a lot of places. The heighfield can be considered as a terrain tile (e.g. 100m x 100m) , with which I want to tile a much larger area (e.g. 1km x 1km). The method I have so far implemented is to have the following scenegraph: Group / | \ /|\ G1G2G3 \ | / \ | / Tile with VBO and vertex shader where G1..Gn are simple groups which set a tile_offset uniform. The vertex shader on the tile uses the tile_offset to modify the vertexes for each tile. This all works OK. However, I am concerned that this is not the best route for high performance when the tile count is quite high. e.g. is it better for G1...Gn to be matrix transforms (presumably not, although an easy thing for me to test). Is this a good example for the geometry instancing extensions? So, does anybody have any good advice for doing this kind of thing in a better way within OSG? Pointers or examples (or even hints) would be appreciated... Thanks in advance, David ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Please test SVN of OpenSceneGraph in pre for 2.7.6 dev release
Robert, El Viernes 28 Noviembre 2008ES 16:53:42 Robert Osfield escribió: Hi All, I've merged Jeremy's and Cedric's updates of osgWidget and osgAnimation into svn/trunk. This does mean we'll need another round of testing before I can tag 2.7.6. Assistance on this much appreciated ;-) The osgAnimation update reverted the fix we had set on the SVN about the cmath inclusion on include/osgAnimation/Timeline: http://www.mail-archive.com/[EMAIL PROTECTED]/msg02481.html Alberto ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Please test SVN of OpenSceneGraph in pre for 2.7.6 dev release
Hi Robert, I have tried and it is Ok on XP SP2 VisualStudio2003 Cmake2.6 Only there is a warning in osganimationskinning.exe; An update callback has no name, it means it can link only with named Target, often an error Best Regards. 2008/11/28 Alberto Luaces [EMAIL PROTECTED] Robert, El Viernes 28 Noviembre 2008ES 16:53:42 Robert Osfield escribió: Hi All, I've merged Jeremy's and Cedric's updates of osgWidget and osgAnimation into svn/trunk. This does mean we'll need another round of testing before I can tag 2.7.6. Assistance on this much appreciated ;-) The osgAnimation update reverted the fix we had set on the SVN about the cmath inclusion on include/osgAnimation/Timeline: http://www.mail-archive.com/[EMAIL PROTECTED]/msg02481.html Alberto ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Ümit Uzun ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Performance query : Drawing lots of instances of avertex array
I'm working on a similar problem: rendering a large vector field as several arrows, all with different positions and orientations. If I multiparent the Geometry to several PAT nodes, the cull time cost is quite high. I'm looking at adding support for ARB_draw_instanced to reduce both the cull and draw time. Right now, I'm attacking it as a new PrimitiveSet, DrawArraysInstanced, which works essentially like the DrawArrays PrimitiveSet but emits a glDrawArraysInstancedARB() command to effect the rendering. Making some progress, but it's not there yet (and I'll also have to add support for glDrawElementsInstancedARB). I expect I'll contribute this back to OSG if I get it running. Paul Martz Skew Matrix Software LLC http://www.skew-matrix.com http://www.skew-matrix.com/ +1 303 859 9466 _ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of David Spilling Sent: Friday, November 28, 2008 9:22 AM To: OpenSceneGraph Users Subject: [osg-users] Performance query : Drawing lots of instances of avertex array Dear All, I have a geometry with a simple heightfield type vertex array; I'm also using VBO. I want to repeat that VBO in quite a lot of places. The heighfield can be considered as a terrain tile (e.g. 100m x 100m) , with which I want to tile a much larger area (e.g. 1km x 1km). The method I have so far implemented is to have the following scenegraph: Group / | \ /|\ G1G2G3 \ | / \ | / Tile with VBO and vertex shader where G1..Gn are simple groups which set a tile_offset uniform. The vertex shader on the tile uses the tile_offset to modify the vertexes for each tile. This all works OK. However, I am concerned that this is not the best route for high performance when the tile count is quite high. e.g. is it better for G1...Gn to be matrix transforms (presumably not, although an easy thing for me to test). Is this a good example for the geometry instancing extensions? So, does anybody have any good advice for doing this kind of thing in a better way within OSG? Pointers or examples (or even hints) would be appreciated... Thanks in advance, David ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] VPB: Partial terrain with vpbmaster, why?
Hi Alehandro, I can't see how I or others can really answer your question. The best I can do is point out that your command lines are different, so... this might have an effect. Try using the same command lines. Robert. On Fri, Nov 28, 2008 at 4:17 PM, Alejandro Aguilar Sierra [EMAIL PROTECTED] wrote: Hi, Building the same terrain, osgdem creates it complete but vpbmaster does just the first left chunk. Why? Am I missing some parameter? I used these commands, respectively: osgdem -d fv.tif -t fv_tx.tif -l 5 -v 20 -o fv.ive Elapsed time = 70.969066 vpbmaster -d fv.tif --layer 0 -t fv_tx.tif --layer 1 -t fv_gmt.tif --terrain -o fv2.ive Total elapsed time = 1.818129 All images are geotiff created with gdal from DEM data (etopo1) and height/palette tables. Thanks in advance and 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] Please test SVN of OpenSceneGraph in pre for 2.7.6 dev release
HI Alberto, Fix now re-instanted and checked in. Robert. On Fri, Nov 28, 2008 at 4:32 PM, Alberto Luaces [EMAIL PROTECTED] wrote: Robert, El Viernes 28 Noviembre 2008ES 16:53:42 Robert Osfield escribió: Hi All, I've merged Jeremy's and Cedric's updates of osgWidget and osgAnimation into svn/trunk. This does mean we'll need another round of testing before I can tag 2.7.6. Assistance on this much appreciated ;-) The osgAnimation update reverted the fix we had set on the SVN about the cmath inclusion on include/osgAnimation/Timeline: http://www.mail-archive.com/[EMAIL PROTECTED]/msg02481.html Alberto ___ 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] Please test SVN of OpenSceneGraph in pre for 2.7.6 dev release
Hi Robert, thank you, Cygwin compiles SVN ok again :) Alberto El Viernes 28 Noviembre 2008ES 18:14:20 Robert Osfield escribió: HI Alberto, Fix now re-instanted and checked in. Robert. On Fri, Nov 28, 2008 at 4:32 PM, Alberto Luaces [EMAIL PROTECTED] wrote: Robert, El Viernes 28 Noviembre 2008ES 16:53:42 Robert Osfield escribió: Hi All, I've merged Jeremy's and Cedric's updates of osgWidget and osgAnimation into svn/trunk. This does mean we'll need another round of testing before I can tag 2.7.6. Assistance on this much appreciated ;-) The osgAnimation update reverted the fix we had set on the SVN about the cmath inclusion on include/osgAnimation/Timeline: http://www.mail-archive.com/[EMAIL PROTECTED]/msg0 2481.html Alberto ___ 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] Performance query : Drawing lots of instances of avertex array
Paul, If this was raw OpenGL, I'd be tempted to set up my heightfield as a display list, and then change the modelview matrix for each call to the display list. I'm not quite sure how to force similar behaviour in OSG other than to set up the scenegraph with multiple PATs. I'm working on a similar problem: rendering a large vector field as several arrows, all with different positions and orientations. If I multiparent the Geometry to several PAT nodes, the cull time cost is quite high. I have the notion that cull times can be improved by not letting the cull traverse go across the PATs. The parent of the PATs probably knows something that could limit the set of PATs that actually needs to be traversed in the draw. In my application that's certainly true - the top Group gets the view/projection matrices, and since each tile is the same size, can decide which of it's children really need drawing without having to check the bounding spheres of its many PAT children. Unfortunately, my heightfield does sometimes change and so I haven't really pursued the tradeoff between the cost of display list compiles and other techniques. I'm looking at adding support for ARB_draw_instanced to reduce both the cull and draw time If you get anything working, I'd be delighted to test it in my context, time permitting (by then I will have probably got the codepaths for the various other techniques going). David ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Please test SVN of OpenSceneGraph in pre for 2.7.6 dev release
Hi Robert, I've merged Jeremy's and Cedric's updates of osgWidget and osgAnimation into svn/trunk. This does mean we'll need another round of testing before I can tag 2.7.6. Assistance on this much appreciated ;-) Builds fine on Windows Vista, VC++ 2005, CMake 2.6.1. J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] 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
Re: [osg-users] Calculating the volume of a model through OSG
These algorithms have been very helpful; thanks everyone :) -Dusten 2008/11/27 Middleton, Colin (GE EntSol, Intelligent Platforms) [EMAIL PROTECTED] Another simple way of calculating the volume of a arbitary closed 3d mesh is Choose an arbitary point ( let's call it o ) For each triangle with vertices ( a,b,c ) Calculate the volume of the tetrahedron ( a,b,c,o ) using a scalar triple product ( ((b-a)x(c-a)).(o-a)/3 ). Add the volumes of all of the tetrahedrons together, some of these volume will be negative and some will be positive, depending on whether the triangle is facing the arbitary point or not. These negative volumes cancel out the positive ones, leaving only the enclosed area. This relies on the 2 assumptions:- 1) All of the triangles in the 3d object have the same winding order, otherwise the volumes' sign cannot be trusted. 2) The object has no holes. If the object has holes then the placing of the arbitary point will affect the volume of the object, a triangular hole will mean that the volume of a tetrahedron between the hole and the arbitary point will be missed in the calcalation. As a result of this placing it in the centroid of the 3d object is probably the best plan. I hope this helps. Colin. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Alberto Luaces Sent: 27 November 2008 08:42 To: OpenSceneGraph Users Subject: Re: [osg-users] Calculating the volume of a model through OSG Hi, in addition to Janusz pointers, if you need also the rest of the mass properties, you could take a look at this famous paper: http://www.cs.berkeley.edu/~jfc/mirtich/massProps.html Alberto El Jueves 27 Noviembre 2008ES 09:09:34 [EMAIL PROTECTED] escribió: Dusten: You might find these two helpful: accurate: http://tetgen.berlios.de/ approximate simple: http://www.gamedev.net/reference/articles/article2247.asp The second one could be easily added to osg I guess. Janusz Dnia Wed, 26 Nov 2008 23:47:57 -0600, Dusten Sobotta napisał(a): Hello, Manually modifying various attributes of models is quite tedious, and tends to set back the development of games. To work around this issue, I'd like to implement a feature to calculate the volume of an in-game model, so that given a surface attribute such as 'wood' or 'metal', (which have pre-defined density values), the mass of an object can be computed and later exported. Might anyone have an example for finding the approximate volume of an object through OSG? Thanks in advance, Dusten ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegrap h.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-opensce negraph.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] Performing parent/child occlusion culling
Hello, How might I enable parent/child culling, such that the world geometry of a primary (parent) object determines which small objects (children) are culled out of the scene? For example, there may be hundereds or thousands of small objects in my scene, that wouldn't occlude much of anything. Only the world geometry with large, static walls should be used during the culling process to reduce computation time. From what I understand about OSG's implementation of occlusion culling however, this can't be accomplished with a single, large model used for the static world geometry--as the camera is always within the bounding box. Might anyone have some recommendations? Thanks in advance, Dusten ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Performing parent/child occlusion culling
Hello Dusten, From what I understand about OSG's implementation of occlusion culling however, this can't be accomplished with a single, large model used for the static world geometry--as the camera is always within the bounding box. OSG's culling is hierarchical, so if you organize your scene correctly this will be done automatically. A very flat graph of large numbers of objects is really bad, but a really deep graph is bad too, so you need to experiment. Say you're making a building, you could build a room, then parent all rooms to form a floor, then parent all floors to form the building, then add the outside walls. When the viewer is in a room, for example, OSG will start at the top of the graph, see that the bounds of the building as a whole are in view, descend into the floors, cull away any floors whose bounds are not in view, descend into the others, cull away any rooms whose bounds are not in view, and render just the rooms whose bounds are in view (which should hopefully be just the room you're in). It will also cull away things that are behind the viewer or outside their field of view, so walls and furniture behind you will be culled away. Including your small objects into that hierarchy so that they're parented to the right parent will lower draw times too. However, if you have a very large number of small objects, you will want to cluster them below a common Group parent, so that if the whole group's bounds are not visible then it will be culled in one shot instead of testing each small object's bounds individually. A symptom that indicates you should do that is if your cull times are very high but your draw times are normal. How many small objects to cluster together is a balancing act that you should experiment with, as performance will depend on your hardware and the current bottleneck in your pipeline. There has been lots said in the past about how to properly balance a scene graph, have a look through the archives. In general, it's called conditioning a scene graph, and a scene graph that is badly balanced is also called badly conditioned, so you might want to search on those terms. Hope this helps, J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] 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] TexEnv and BLEND
Hello, I used an object of osg::TexEnv and the mode Blend. But I don't know how the texture color and the object color are combined? Mode: add - object color + texture color decal - object color - texture color modulate - object color * texture color blend - object color ??? texture color Can everybody explain the mode Blend?? Cheers, Martin ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Performing parent/child occlusion culling
Hello, I understand how this can be accomplished if a user is given a lot of control over the scene graph during map/level creation, but what I'm aiming for is the ability to load in a .3ds model (or otherwise) for level geometry and let the user place various prefabs such as crates, trees, cars, etc into the world; then, the composite level is exported to a .lua script so that it can be loaded again with all of the static and dynamic objects intact. The issue is of course, that I cannot possibly compete with blender or 3dsMax as a modeling program, and I shouldn't attempt to either. The users of this engine should be able to use existing, non-proprietary modeling software to create levels or items for their game. I believe it would be too complex to implement an automatic or user-friendly way to disassemble an existing set of level geometry, only to re-assemble with parenting. A certain degree of the parent/child culling you mentioned is already implemented. For example, multiple 'levels' can be laid out on a grid for on-the-fly level streaming--each level being a parent to the static and dynamic objects contained within them. But it would be -very- tedious for a level designer to heavily subdivide his or her model for culling purposes. Is there some way to use a 'precise' bounding box on a single node, that takes the level geometry's lowest LOD for occlusion culling operations? At least this would allow detail objects to be culled away if the camera was 'in' the level, as it usually is. Thanks for your time, Dusten On Fri, Nov 28, 2008 at 3:33 PM, Jean-Sébastien Guay [EMAIL PROTECTED] wrote: Hello Dusten, From what I understand about OSG's implementation of occlusion culling however, this can't be accomplished with a single, large model used for the static world geometry--as the camera is always within the bounding box. OSG's culling is hierarchical, so if you organize your scene correctly this will be done automatically. A very flat graph of large numbers of objects is really bad, but a really deep graph is bad too, so you need to experiment. Say you're making a building, you could build a room, then parent all rooms to form a floor, then parent all floors to form the building, then add the outside walls. When the viewer is in a room, for example, OSG will start at the top of the graph, see that the bounds of the building as a whole are in view, descend into the floors, cull away any floors whose bounds are not in view, descend into the others, cull away any rooms whose bounds are not in view, and render just the rooms whose bounds are in view (which should hopefully be just the room you're in). It will also cull away things that are behind the viewer or outside their field of view, so walls and furniture behind you will be culled away. Including your small objects into that hierarchy so that they're parented to the right parent will lower draw times too. However, if you have a very large number of small objects, you will want to cluster them below a common Group parent, so that if the whole group's bounds are not visible then it will be culled in one shot instead of testing each small object's bounds individually. A symptom that indicates you should do that is if your cull times are very high but your draw times are normal. How many small objects to cluster together is a balancing act that you should experiment with, as performance will depend on your hardware and the current bottleneck in your pipeline. There has been lots said in the past about how to properly balance a scene graph, have a look through the archives. In general, it's called conditioning a scene graph, and a scene graph that is badly balanced is also called badly conditioned, so you might want to search on those terms. Hope this helps, J-S -- __ Jean-Sebastien Guay[EMAIL PROTECTED] 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] Please test SVN of OpenSceneGraph in pre for 2.7.6 dev release
Hi, It's not a bug, it's an example i will need to update. For this example it's not a problem but if you have it in a program it could. I will fix it to avoid this message. Cheers, Cedric Ümit Uzun wrote: Hi Robert, I have tried and it is Ok on XP SP2 VisualStudio2003 Cmake2.6 Only there is a warning in osganimationskinning.exe; An update callback has no name, it means it can link only with named Target, often an error Best Regards. 2008/11/28 Alberto Luaces [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] Robert, El Viernes 28 Noviembre 2008ES 16:53:42 Robert Osfield escribió: Hi All, I've merged Jeremy's and Cedric's updates of osgWidget and osgAnimation into svn/trunk. This does mean we'll need another round of testing before I can tag 2.7.6. http://2.7.6. Assistance on this much appreciated ;-) The osgAnimation update reverted the fix we had set on the SVN about the cmath inclusion on include/osgAnimation/Timeline: http://www.mail-archive.com/[EMAIL PROTECTED]/msg02481.html Alberto ___ osg-users mailing list osg-users@lists.openscenegraph.org mailto:osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Ümit Uzun ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- +33 (0) 6 63 20 03 56 Cedric Pinson mailto:[EMAIL PROTECTED] http://www.plopbyte.net ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] TexEnv and BLEND
Hi Martin, On 29/11/08 8:46 AM, Martin Großer wrote: I used an object of osg::TexEnv and the mode Blend. But I don't know how the texture color and the object color are combined? Mode: add - object color + texture color decal - object color - texture color That would be subtract; decal modulates color according to texture alpha. modulate - object color * texture color blend - object color ??? texture color Can everybody explain the mode Blend?? The long version (and authoritative) is the Red Book (or man glTexEnv). The short version (for a RGBA texture) is: C = Cfrag * (1-Ctex) + Cconst * Ctex A = Afrag * Atex Basically, for the color channels, the texture color defines the blend factor between the fragment color (e.g. as determined by lighting or vertex color) and Cconst, the texture environment color. The texture alpha channel modulates the fragment alpha. Cheers, /ulrich PS: Please don't hijack threads. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
