[vtkusers] Hardware offscreen rendering (and its possible use for the Java wrappers)

[Aashish Chaudhary]

On Thu, Oct 20, 2011 at 10:01 AM, Luke Dodd <luke.dodd at gmail.com> wrote:
> Hi Aashish,
>
>> Quickly looked over your email. Correct me if I am wrong but it seems
>> like you are looking for render to texture (+alternatives).
>>
>
> That's correct.
>
>> It is not hard, the tricky part is to handle variations in OpenGL
>> versions but it won't be that bad.  I have implemented two variations
>> of it earlier ( for OpenGL 3.3 (used for deferred shading) and OpenGL
>> ES (render to texture) ).
>>
>
> Is this code in VTK? I know what I'm attempting to do is possible in
> theory, I'm trying to avoid writing a whole vtkRenderWindow
> implementation. It seems like there are bits of code in
> vtkOpenGLRenderWindow/vtkXOpenGLRenderWindow which set up hardware
> frame-buffers if Mesa isn't being used. When I turn the offscreen
> rendering flag on a (blank) window still pops up. Should I attempt to
> use this, or roll my own solution?

No it is not VTK code yet :( .  I can help you writing implementation
for this (and then once it is right, can merge to VTK). We can follow
up on another thread if you are interested.

Best,


>
> Best,
> Luke Dodd
>



-- 
| Aashish Chaudhary
| R&D Engineer
| Kitware Inc.
| www.kitware.com