[eq-dev] OSG / Equalizer and glsl 4.2

[paul....@internode.on.net]

Hi, this probably should be posted on the osg mail list but thought someone may have  had similar issues..
We have a simple osg/eq test harness using  a modified version of osgScaleViewer to use osgViewer instead of sceneview.
When running our tesselation shader we are not getting anything produced on screen.  I was wondering if anyone has experienced issues rendering scenes on the GPU with equalizer using later versions of glsl. Or if anyone would have an idea from Equalizers perspective where things could potentially be wrong..

Thanks in advance
Paul

[Stefan Eilemann]

Hi Paul,

Equalizer does not interfere with OpenGL during rendering. It could be that something goes wrong during context creation, which is done by Equalizer in osgScaleViewer. Maybe you need a GL3 or GL4 context? If that's the case, I'ld happily merge a new window attribute to control the GL2/3/4 context creation.


HTH,

Stefan.





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[paul....@internode.on.net]

That would be fantastic Stefan,  thanks ..  

[Stefan Eilemann]

On 3. Aug 2012, at 10:26, paul....@internode.on.net wrote:

> That would be fantastic Stefan, thanks ..

Just to be clear: I think it might be the context creation, but it's up to you to investigate, and ideally provide a patch for Equalizer.


Cheers,

Stefan.

[paul....@internode.on.net]

I'll let you know how I go, but I agree it looks like context creation.  
Thanks for your help

----- Reply message -----
From: "Stefan Eilemann" <eile...@gmail.com>
To: "Equalizer Developer List" <eq-...@equalizergraphics.com>
Subject: [eq-dev] OSG / Equalizer and glsl 4.2

[Stefan Eilemann]

Paul, all,

On 3. Aug 2012, at 10:48, Paul-11 [via Software] wrote:

> I'll let you know how I go, but I agree it looks like context creation.

FYI - I've just received the following email from the VRJuggler maintainer, see also https://github.com/Eyescale/Equalizer/issues/156:



We have been working on this issue for VR Juggler for the past little bit. You may find it useful in looking at what we did to help direct/review what you end up putting into Equalizer. You are right in your assessment below, you just need to change how the context is created for gl3/gl4.

https://code.google.com/p/vrjuggler/source/list?name=gl3

you will specifically want to look at the changes on and after Dec 30, 2011.

We are currently in the midst of working out a few issues in getting an ogl3 only application but we hope to have those resolved shortly. Anyway, let me know if you have any questions.

Doug



HTH,

Stefan.





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