[vtk-developers] OpenGL backend - 1.1 vs 2.0

[Andras Lasso]

OpenGL capability detection is broken when you use RDP: if you start an application before connecting through RDP it works just fine (see some details and workarounds here: http://na-mic.org/Mantis/view.php?id=4252).



Could somebody try what happens if we skip capability detection on startup and force using all OpenGL features that is needed for the OpenGL2 backend?



Andras



From: Vladimir Engelgardt<mailto:v.engelgardt at gmail.com>
Sent: Wednesday, May 10, 2017 6:14 AM
To: vtk-developers at vtk.org<mailto:vtk-developers at vtk.org>
Subject: [vtk-developers] OpenGL backend - 1.1 vs 2.0



Hi,

Problem description: Application uses VTK 7.0 (OpenGL 2 module) for
rendering on Windows platform. But the problem is, that OpenGL 2 has limited
support over Microsoft's Remote Desktop. RDP is a must for our application
(VNC, TeamViewer is not an option). On Win 10 there is an option called 'Use
hardware drivers over RDP' and it works, but for limited set of video
adapters - AMD, Integrated Graphics from Intel and NVIDIA (Tesla, Grid
only).

Is there any workaround for this problem, i.e. detect GL version at runtime
and use 1.1 or 2.0? If no, we are going to switch for OpenGL 1.1.

We concern about OpenGL 1.1 support in future versions of VTK. Is it going
to be supported and how long?

Best Regards,
Vladimir.



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