[vtkusers] How to get the framebuffer
mathieu.westphal at kitware.com
Wed Jul 25 03:52:07 EDT 2018
Make sure you have rendered into the renderWindow first.
And try to read from the front and the back buffer.
On Tue, Jul 24, 2018 at 7:57 PM, ling Hai <qyaoza at gmail.com> wrote:
> I am new to vtk and I am trying to get the front framebuffer from the
> renderwindow like this:
> int * dim = renderWindow->GetSize();
> unsigned char* pixels = renderWindow->GetPixelData(0,
> but in pixels there is only a null value. I am using this on a 3d render
> if that makes a difference the above segment of code called after rendering
> the volume. What am I missing? Any help is appreciated thanks.
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