[vtkusers] OffScreen Rendering not fully working in linux and osx

[Julien Finet]

What if you try to change in vtkXOpenGLRenderWindow.cxx:642 the line

if(this->OwnWindow)

into

if (this->OwnWindow && !this->GetOffScreenRendering())

Julien.



On Tue, Feb 5, 2013 at 9:08 AM, Juan Cardelino <juan.cardelino at gmail.com>wrote:

> Dear all,
>               I've been using the attached example for many years now to
> test Offscreen Rendering. It used to work like a charm in every platform. I
> had 3 different states on this program.
>
> 1) Some time ago, it started opening a blank window in mac. After that it
> also happened in Linux. In windows it still works properly.
>
> 2) I added the following code:
>
>     // Graphics Factory
>   vtkGraphicsFactory * graphics_factory
>       = vtkGraphicsFactory::New();
>   graphics_factory->SetOffScreenOnlyMode( 1);
>   graphics_factory->SetUseMesaClasses( 1 );
>
>   // Imaging Factory
>   vtkImagingFactory * imaging_factory
>       = vtkImagingFactory::New();
>   imaging_factory->SetUseMesaClasses( 1 );
>
> Which made it work on linux but not on mac.
>
> 3) Now even with that code osx/linux still open the blank widonw, and in
> Windows works properly.
>
> I tested it with many different vtk configurations, I don't know what I'm
> doing wrong. At the moment I'm testing it in VTK 6.0.0 under Linux.
>
> Any hints would be appreciated.
> Thanks.
>
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