[vtkusers] vtkImageStack with blending options

[David Gobbi]

Hi Simon,

The vtkTexture class provides some control over blending modes, and this
feature could also be added to vtkOpenGLImageSliceMapper (which uses
vtkTexture internally, for the OpenGL2 backend).  If it was added there,
then it could be used with vtkImageStack or anywhere else that the
vtkImageSlice/vtkImageActor classes are used.

I've had this feature on my mind for a long while, but I haven't had any
work projects that need it yet.  If you want to tinker around with
vtkOpenGLImageSliceMapper and get things working to your satisfaction, I'd
gladly help to get your changes into VTK.

 - David


On Tue, May 3, 2016 at 11:41 AM, Simon Drouin <drouin.simon at gmail.com>
wrote:

> Hi All,
>
> Looking for a class that behaves similarly to vtkImageStack but that
> allows for different types of blending between the slices ( basically,
> expose OpenGL controls for blending, i.e. glBlendFunc, and
> glBlendEquation). Is there a class that does that in VTK without relying on
> CPU-based image processing?
>
> Thanks in advance.
>
> Simon Drouin
>
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