Yvonne Jung | 1 Jul 11:58 2012
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Web3D 2012: Call for Participation

*** CALL FOR PARTICIPATION --- Web3D 2012 ***

Web3D Conference 2012
17th International Conference on 3D Web Technology
Sponsored by ACM SIGGRAPH and in cooperation with Eurographics Association

August 4 - 5, 2012
L.A. Convention Center, Los Angeles, CA, USA
 http://www.web3d2012.org/
 Mail: web3d2012@...

Registration:
 http://www.web3d2012.org/registration.html

Confirmed Invited Speakers:
 - Markus Gross    (ETH Zurich & Disney Research Zurich, Switzerland)
 - David J. Kasik  (Boing, USA)
 http://www.web3d2012.org/invitedSpeakers.html

Program:
 The program and the list of accepted papers and posters can be found on
 http://www.web3d2012.org/program.html

Web3D:
------
The 17th ACM International Web3D Conference will address a wide range of research topics related to
Web-based 3D Graphics. These topics include: representation and modeling methods, content analysis,
rendering, distributed virtual environments, large-scale databases, Web-wide human-computer
interaction, as well as innovative tools and applications.
On the one hand, authoring and delivering educational contents is one of the main interests of this edition
(Continue reading)

"Christoph Fünfzig" | 3 Jul 11:00 2012
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Re: FBO render to depth image (OpenSG 2.0)

Hi Carsten,

thanks a lot, I have it working now.
Actually, read back has been the problem.
In "OSGRenderBuffer.cpp", it uses "pImg->getPixelFormat()" as the format,
(which should be GL_DEPTH_COMPONENT for the depth buffer)

"
void RenderBuffer::processPreDeactivate (DrawEnv *pEnv, UInt32 index)
{
    if(_sfReadBack.getValue() == true)
    {
        Image *pImg = this->getImage();

        if(pImg == NULL)
            return;

        if(pImg->getData() == NULL)
        {
            SINFO << "TextureBuffer::render: (Re)Allocating image "
                  << "for read-back."
                  << endLog;

            pImg->set(pImg->getPixelFormat(),
                      pImg->getWidth      (),
                      pImg->getHeight     (),
                      pImg->getDepth      (),
                      pImg->getMipMapCount(),
                      pImg->getFrameCount (),
                      pImg->getFrameDelay (),
(Continue reading)

Carsten Neumann | 4 Jul 01:20 2012
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Re: FBO render to depth image (OpenSG 2.0)

	Hello Christoph,

On 07/03/2012 04:00 AM, "Christoph Fünfzig" wrote:
> thanks a lot, I have it working now.
> Actually, read back has been the problem.
> In "OSGRenderBuffer.cpp", it uses "pImg->getPixelFormat()" as the format,
> (which should be GL_DEPTH_COMPONENT for the depth buffer)
[SNIP]
> Can you please consider adding a format GL_DEPTH_COMPONENT to "OSGImage.cpp" ?
> "OSGImage.cpp", line 110:
>       { GL_DEPTH_COMPONENT,             1 },
> With this addition, it works with RenderBuffer and TextureBuffer as well.

I think the attached patch should do it.

Gerrit: could you eyeball it, I'll probably forever be confused by 
OpenGL's format, internal format and data type specifications for 
textures/buffers ;)

	Cheers,
		Carsten
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(Continue reading)

"Christoph Fünfzig" | 4 Jul 17:55 2012
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Re: FBO render to depth image (OpenSG 2.0)

Hi Carsten,

I incorporated the patch!
For me it works like a charm ..

Thanks,
Christoph

On 04.07.2012 01:20, Carsten Neumann wrote:
>    Hello Christoph,
>
> On 07/03/2012 04:00 AM, "Christoph Fünfzig" wrote:
>> thanks a lot, I have it working now.
>> Actually, read back has been the problem.
>> In "OSGRenderBuffer.cpp", it uses "pImg->getPixelFormat()" as the format,
>> (which should be GL_DEPTH_COMPONENT for the depth buffer)
> [SNIP]
>> Can you please consider adding a format GL_DEPTH_COMPONENT to "OSGImage.cpp" ?
>> "OSGImage.cpp", line 110:
>>       { GL_DEPTH_COMPONENT,             1 },
>> With this addition, it works with RenderBuffer and TextureBuffer as well.
>
> I think the attached patch should do it.
>
> Gerrit: could you eyeball it, I'll probably forever be confused by OpenGL's format, internal format and
data type specifications for textures/buffers ;)
>
>     Cheers,
>         Carsten 

(Continue reading)

Keyan | 5 Jul 17:42 2012
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Re: OpenSG 2.0 & Shadows

Hello Carsten,

it actually did. I have now solved the issue.

Thanks,
Keyan

On 28 Jun 2012, at 17:48, Carsten Neumann wrote:

> 	Hello Keyan,
> 
> On 06/27/2012 04:27 PM, Keyan wrote:
>> this issue is now really getting a pain …
>> 
>> I need shadows, which are calculated independent of the camera's position to the center of origin.
Setting and fixing some boxes, which lead to a poor shadow calculation, as suggested, is not an option.
>> 
>> My current idea is the keep the OpenSG-navigator fixed, and to implement my own camera, that translates
my scene back to the center of origin, so that everything is within the shadow-calculation area.
>> 
>> The problem that I now have is the following: how can I do what in gl is know as glLoadIdentity(). For some
reason, I just can't figure out how to set the navigator such that geFrom results in 0, 0, 0, getAt results in
0, 1,0 and up results in 0,0,1. Using the setFrom/setAt/setUp lead to somewhat unexpected results. So i
would like to "reset" the scene graph at the very first node, to then apply my own transformations, from a
well defined initial state.
> 
> hmm, I'm not sure I'm following: Navigators are usually set up to 
> manipulate the camera beacon. If you don't want that you can either have 
> it modify a different transform or assign a different beacon node to 
> your camera (or have no beacon node at all).
(Continue reading)

Victor Haefner | 11 Jul 16:18 2012
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CMake Mac OS X Compile OpenSG 2.0

Hello,

I tried to compile OpenSG 2.0 on Mac OS X 10.7.4 with macports boost
at 99% I get the error:
Compiling Filesystem version 3 with BOOST_FILESYSTEM_VERSION defined != 3

cmake first says:
Boost version: 1.50.0
Found the following Boost libraries:
   filesystem
   system

but further down it says:
Could NOT find Boost

I tried to use -DBOOST_ROOT=/opt/local/ but this didn't help cmake to find boost

thank you very much for any hints!

yours,
Victor

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Carsten Neumann | 11 Jul 19:58 2012
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Re: CMake Mac OS X Compile OpenSG 2.0

	Hello Victor,

On 07/11/2012 09:18 AM, Victor Haefner wrote:
> I tried to compile OpenSG 2.0 on Mac OS X 10.7.4 with macports boost
> at 99% I get the error:
> Compiling Filesystem version 3 with BOOST_FILESYSTEM_VERSION defined != 3

hmm, which file is it compiling? Oh never mind, most likely it's 
Source/Contrib/BackgroundLoader/testBackgroundLoader.cpp, I see that it 
starts with #define BOOST_FILESYSTEM_VERSION 2, which won't work for 
boost versions where filesystem v2 was removed (so boost 1.48.0 and 
newer, I think).

A quick workaround would be to disable libOSGContribBackgroundLoader, 
simply add

RETURN()

at the top of 
Source/Contrib/BackgroundLoader/CMakeLists.Lib.OSGContribBackgroundLoader.txt

The full fix is of course to make that test work with boost filesystem 
v3 and remove the define, I'll see what I can do.

> cmake first says:
> Boost version: 1.50.0
> Found the following Boost libraries:
>     filesystem
>     system
>
> but further down it says:
> Could NOT find Boost

that may be a bogus message although it is a bit odd.

> I tried to use -DBOOST_ROOT=/opt/local/ but this didn't help cmake to
> find boost

Did you remove your CMakeCache.txt in the build dir? IIRC the cmake 
module to locate boost does not detect changes to BOOST_ROOT after it 
already found an installation.

	Cheers,
		Carsten

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Carsten Neumann | 11 Jul 23:23 2012
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Re: CMake Mac OS X Compile OpenSG 2.0

On 07/11/2012 12:58 PM, Carsten Neumann wrote:
> The full fix is of course to make that test work with boost filesystem
> v3 and remove the define, I'll see what I can do.

I've committed a fix that should make the test work with boost 
filesystem v2 and v3.
Can you update and try again please?

	Cheers,
		Carsten

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Volker Settgast | 12 Jul 10:30 2012
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OSG2 debug output in navigator

Hi,

 

in system/window/utilities/OSGNavigator.cpp, line 701 there is an fprintf. I think somebody forgot to remove it …

 

Cheers,

Volker

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Gerrit Voß | 12 Jul 11:21 2012

Re: OSG2 debug output in navigator


Hi,

On Thu, 2012-07-12 at 10:30 +0200, Volker Settgast wrote:
> Hi,
> 
>  
> 
> in system/window/utilities/OSGNavigator.cpp, line 701 there is an fprintf. I
> think somebody forgot to remove it .

ok, I'll remove it, 

thanks
  gerrit

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Gmane