[vtk-developers] Problem with rendering 3D objects with OpenGL ES 2.0

[Ken Martin]

I do not believe the front wall is transparent. Looking at the images it
appears that everything is being rendered but the zbuffering is off or
backwards. I'm not sure what you had to change to do the port but that
would be my guess, some change related to creating the window, maybe it is
missing a depth buffer or it is setup oddly.

Ken


On Mon, Apr 25, 2016 at 9:26 AM, Signum <artur.jaskiewicz2 at gmail.com> wrote:

> Hello. I am porting VTK to Google Native Client (Pnacl) which fully
> supports
> OpenGL ES 2.0.
> I think most of the work I need for my application is done (e.g.
> vtkImageReslice works fine), but now I have a problem with rendering simple
> Sphere or Cube or anything in 3D. The problem is that front walls renders
> transparent.
> On included image, cube on the left is what it should look like, and cube
> on
> the right is problematic rendering on OpenGL ES 2.0 (Native Client).
> <http://vtk.1045678.n5.nabble.com/file/n5737865/L5un3.png>
>
> To better visualise this problem, I've recorded video:  VTK rendering
> artifacts video <http://sendvid.com/mjoa1upo>
>
> Does anybody have any idea what goes wrong here?
>
> PS. I also asked this question on stackoverflow:
>
> http://stackoverflow.com/questions/36790966/vtk-rendering-artifacts-with-opengl-es-2-0
> <
> http://stackoverflow.com/questions/36790966/vtk-rendering-artifacts-with-opengl-es-2-0
> >
>
>
>
> --
> View this message in context:
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> Sent from the VTK - Dev mailing list archive at Nabble.com.
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-- 
Ken Martin PhD
Chairman & CFO
Kitware Inc.
28 Corporate Drive
Clifton Park NY 12065
518 371 3971

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