[vtk-developers] Multiple textures

[Ken Martin]

I responded yesterday so maybe check your spam folder etc.  Here is the link

https://markmail.org/thread/7gtvznk7jql7uv74



On Tue, Oct 30, 2018 at 3:10 PM, Patrick Bergeron <pbergeron at spiria.com>
wrote:

> Hi folks. I sent this a while back on vtk-users but got no response.
>
>
>
> I am sending this to vtk-developers because if the features isn't
> implemented, I will implement it.
>
>
> I am trying to pass multiple texture buffers to a fragment shader.
>
>
> I saw I can do:
>
>
> 1) actor->SetTexture(vtkTexture*) takes only a single vtkTexture
>
>
> 2) actor->GetProperty()->SetTexture(int unit, vtkTexture*) takes a
> texture that I can associate to a texture unit, but those functions are
> deprecated.
>
>
> In fact, I think that (2) doesn't even work anymore with the OpenGL2
> backend, at least my shader code doesn't seem to be getting them, maybe I
> am doing something wrong. In any case, I get a vtk warning saying I should
> not do that.
>
>
>
> Some folks have said I should combine multiple images into a single image
> before sending as a texture image. But I can't do this, because I need to
> send texture images as well as multiple data (non-image) buffers to the
> shader as well.
>
>
> How can I attach multiple image buffers to the actor and/or ogl mapper?
>
>
>
>
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-- 
Ken Martin PhD
Distinguished Engineer
Kitware Inc.
101 East Weaver Street
Carrboro, North Carolina
27510 USA

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