[vtkusers] Volume rendering problem

[Elvis Stansvik]

2016-08-11 21:30 GMT+02:00 Elvis Stansvik <elvis.stansvik at orexplore.com>:

> 2016-08-11 20:38 GMT+02:00 Aashish Chaudhary <
> aashish.chaudhary at kitware.com>:
>
>> Elvis, Robert,
>>
>> Alvaro is looking into this issue. Hopefully soon we will have few
>> answers. The bottom line is that in a pure opengl application, we were able
>> to render texture larger than 4GB but it is too early to say where the
>> bottleneck is.
>>
>
> Alright, good to know. Thanks for the info and looking forward to hear
> what your findings are.
>

Hi again Aashish, did you or Alvaro make any findings regarding this?

I have to ask: Since you called it an "issue", do you mean that it should
be possible to render volumes larger than 2048 voxels in one dimension
(despite the graphics card texture size limit)?

Because at the moment I'm working under the assumption that it should not
be possible, and I'm trying to work around it in our application by trying
to work with multiple smaller volumes instead. But if it turns out it's a
bug/unintended limitation in VTK, I might not have to do that (if it's
fixed/can be worked around).

Thanks in advance,
Elvis


>
> Elvis
>
>
>>
>> - Aashish
>>
>> On Thu, Aug 11, 2016 at 11:14 AM RobertS <spir.robert at gmail.com> wrote:
>>
>>> it's also 2048. According to this
>>> https://developer.apple.com/opengl/capabilities/ AMD graphics should
>>> have
>>> the limit at 8192-16348, but right now I don't have any to test it.
>>> (MAX_3D_TEXTURE_SIZE attribute)
>>> Robert
>>>
>>>
>>>
>>> --
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>>> om/Volume-rendering-problem-tp5739662p5739683.html
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