Re: nightly builds reactivated

Hi,

On Mon, 2012-05-21 at 09:50 -0500, Carsten Neumann wrote:
> 	Hello Gerrit,
> 
> On 05/21/2012 01:16 AM, Gerrit Voß wrote:
> > just FYI, as they run stable for a while now, I reactivated
> > nightly builds, including a doxygen run. All can be found
> > under
> >
> > http://opensg.fraunhofer.sg/user/gerrit/
> 
> nice, thanks!
> 
> > If somebody with trac access on www.opensg.org could change
> > the Doxgen Tab, that would be great.
> 
> done, well sort of: the trac doxygen plugin (which is responsible for 
> the tab entry) seems to only take local paths, but one can also have it 
> bring up a wiki page with links to external documentation, so that's 
> what happens now.

ok, thanks, one minor thing, could we disable the source browser as we
don't use the opensg repository anymore and it looks kind of old and 
inactive.

thanks & kind regards
 gerrit

Re: nightly builds reactivated

Hi,

On Tue, 2012-06-05 at 17:17 +0800, Gerrit Voß wrote:
> Hi,
> 

> ok, thanks, one minor thing, could we disable the source browser as we
> don't use the opensg repository anymore and it looks kind of old and 
                ^^^^^^

that should of course say the "opensg.org repo" as the sourceforge one
is the current master right now ;)

kind regards
  gerrit

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Re: nightly builds reactivated

On 06/05/2012 05:48 AM, Gerrit Voß wrote:
> On Tue, 2012-06-05 at 17:17 +0800, Gerrit Voß wrote:
>> ok, thanks, one minor thing, could we disable the source browser as we
>> don't use the opensg repository anymore and it looks kind of old and

good point.

> that should of course say the "opensg.org repo" as the sourceforge one
> is the current master right now ;)

:)
I've disabled it for anyone who is not logged in or does not have admin 
privileges for trac - will check with Dirk if there is a way to 
completely turn it off.

	Cheers,
		Carsten

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Re: nightly builds reactivated

Hi Carsten,

On Tue, Jun 5, 2012 at 8:58 AM, Carsten Neumann <carsten_neumann@...> wrote:
> :)
> I've disabled it for anyone who is not logged in or does not have admin
> privileges for trac - will check with Dirk if there is a way to
> completely turn it off.

Don't think there is, but admin only should be fine. If you have admin
rights and don't know about SF's GIT let me know and I'll revoke them.
;)

   Dirk

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German National Summer School 2012 on developing "VR and AR Apps"

*********************************************************************************************************
CALL FOR PARTICIPATION

to the first German Virtual Heritage School - Year 2012

GNSS 2012 – German National Summer School on “Developing VR and AR Apps” for
the digital cultural heritage

Saalburg, Germany, 3-7 September 2012
*********************************************************************************************************

This is the first edition of the german national summer school conducted by
the Fraunhofer IGD. The school introduces participants to the new field on web
deployment of VR and web based AR Applications ("VR/AR Apps") as well as
related topics on applied CG technology in the area of virtual and augmented
digital heritage, 3D reconstruction, technological tools dedicated to
processing and integration into web front ends, ported to mobile smartphones
and registered with the physical world. The students will learn basic concepts
on 3D documentation, capturing, tracking and reconstruction technologies
required for online/offline and mobile virtual museums. The topics to be
addressed are:

▪ Virtual Reality on the web (VR Apps) – HTML 5 embedding of interactive
3D graphics, X3DOM, 3D event handling and routing, interaction and advanced
visualisation techniques within web browsers, online virtual museums
(http://www.x3dom.org)

▪ Augmented Reality (AR Apps) – capturing, registration,
analysis-by-synthesis techniques, extensions to browser front-ends, remote
tracking and advanced feature based registration methods (e.g.

Immersive Authoring Tools for Creating Virtual Environments

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OpenSG1.8 - Problem with BlendChunk

Hi all,

we have a problem with the OpenSG Blendchunk implementation. We are trying to render a geometry that has
blend equation set to FUNC_ADD. The graphic chip is either onBoard Intel or ATI. It seems that GL extension
glBlendEquationEXT is not supported by these chips. OpenSG throws a warning that indicates that the
extension is not supported. However I'm not sure if this extension is necessary when using FUNC_ADD.
Please find attached a test geometry..

Thanks,
Michael
--

-- 
Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir
belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.gmx.de

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Re: OpenSG1.8 - Problem with BlendChunk

	Hello Michael,

On 06/08/2012 03:51 AM, Michael Raab wrote:
> we have a problem with the OpenSG Blendchunk implementation. We are trying to render a geometry that has
blend equation set to FUNC_ADD. The graphic chip is either onBoard Intel or ATI. It seems that GL extension
glBlendEquationEXT is not supported by these chips. OpenSG throws a warning that indicates that the
extension is not supported. However I'm not sure if this extension is necessary when using FUNC_ADD.

as far as I can tell glBlendEquationEXT is introduced by
http://www.opengl.org/registry/specs/EXT/blend_minmax.txt
With subsequent extensions
  - http://www.opengl.org/registry/specs/EXT/blend_subtract.txt
  - http://www.opengl.org/registry/specs/EXT/blend_logic_op.txt

adding additional blending equations (GL_FUNC_ADD is just the OpenGL 
default blending equation: C' = clamp((Cs * S) + (Cd * D), 0.0, 1.0).

If you need additive blending you can leave _sfBlendEquation set to 
GL_NONE (which is functionally equivalent to GL_FUNC_ADD anyway) and set 
_sfSrcFactor = GL_ONE and _sfDestFactor = GL_ONE.

	Cheers,
		Carsten

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Float 1D Array to shader

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Re: Float 1D Array to shader

	Hello Victor,

On 06/11/2012 10:18 AM, Victor Haefner wrote:
> I have a problem with passing a 1D Array of floats to my shader:
>
> TextureObjChunk::initialize image failed: invalid value(0x501)
>
> This error happens when I try to use a 1D Image:
> img->set( Image::OSG_RGBA_PF, N, 1, 1, 1, 1, 0, (UChar8*) &buffer[0],
> OSG::Image::OSG_FLOAT32_IMAGEDATA);

that looks correct.

> where buffer is a std vector<float> with size 4*N
>
> Texture:
> tex_obj_chunk->setTarget(GL_TEXTURE_1D);
> tex_obj_chunk->setInternalFormat(GL_RGBA_FLOAT32_ATI);

have you tried not setting any internal format? IIRC the texture chunk 
usually figures it out by looking at the image attached to it.
If leaving internal format unset does not work, internal format should 
be GL_RGBA or GL_RGBA32F for your case (at least that is my reading of 
http://www.opengl.org/sdk/docs/man4/xhtml/glTexImage1D.xml).
Please note that GL_RGBA32F is the core spec name for that enum value, I 
guess the extension name is GL_RGBA32F_ARB (from GL_ARB_texture_float 
extension).

	Cheers,
		Carsten

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