[Paraview] Opacity < 1 significantly slows things down

[David Doria]

Yea, that's much better. So what is the problem with leaving this off?
Sometimes things will look a bit wrong ie. something is in front of
something it shouldn't be?

Thanks,

David


On Mon, May 11, 2009 at 4:52 PM, Utkarsh Ayachit <
utkarsh.ayachit at kitware.com> wrote:

> When objects with opacity < 1 are involved, ParaView uses depth-peeling to
> ensure that the primitives are rendered in correct order. Depth peeling is a
> multipass rendering technique which uses frame buffers etc. and hence is
> slower than rendering without depth peeling at all. To verify that it's
> depth peeling that's slowing things down, go to "Edit|settings" and in the
> "Render View" options, uncheck Enable Depth Peeling.
>
> Utkarsh
>
> On Mon, May 11, 2009 at 4:43 PM, David Doria <daviddoria at gmail.com> wrote:
>
>> If I set the opacity of a file with around 50,000 cells to any value < 1,
>> it goes from working very smoothly to being super super choppy. Is this the
>> expected behavior? I tried immediate mode rendering on and off with no
>> apparent difference.
>>
>> Thanks,
>>
>> David
>>
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