[vtkusers] Render speed for rendering multiple renderwindows

[Eigil Samset]

Sure, the factor 10 is not constant.

In my case, I'm rendering 2 windows with a 2Mb model in each.

Just one window rendered in 30ms, while when adding one windows, the render
time become 350ms for each.

If there is no way around this, I can't use VTK for this application.

 

Eigil

 

  _____  

From: Mark Wyszomierski [mailto:markww at gmail.com] 
Sent: Thursday, December 15, 2005 4:57 PM
To: Eigil Samset
Cc: vtkusers at vtk.org
Subject: Re: [vtkusers] Render speed for rendering multiple renderwindows

 

Wouldn't it depend on what data you're rendering? I've rendered 16 

wins at once when the data was just straight 2D images texture mapped

onto quads. Rendering multiple volumes in different windows at once on

the other hand might be quite the opposite. This has been my experience.

 

Mark

 

On 15 Dec 2005 16:46:48 -0500, Eigil Samset <samset at bwh.harvard.edu> wrote:


The time it takes to execute the call
Rw->Render();
on a vtkRenderWindow increases 10-fold when executing Render() on >2 
renderwindow sequentially within a tight loop. Is the display possibly
cleared?
This is not desirable behavior in interactive applications.

Eigil


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