[vtkusers] Render Speed (I know.. asked by many already..!)

[Lisa Avila]

Hello Ted,

After padding to ensure a power of two you are rendering a 512x128 color 
image - assuming your pipeline is not updating with each render you should 
be able to render this quite fast (my guess is 60fps). I would suggest 
creating a very simple example, maybe in Tcl, requiring no data (use some 
filter to create it) and time the rendering. If it is slow, and you are 
certain you have the latest version of your video driver, then you could 
post the code on this list and maybe someone will see the problem.

Lisa


At 01:43 PM 4/20/2004, Ted Vu wrote:
>Hi Lisa,
>SOrry okay maybe my first email got lost but:
>
>>OK - so you have a 500x500 render window. How big is the input image? And 
>>again - did you time this only for the first render or do all renders 
>>take this long? (and is your pipeline changing every time?)
>
>My input image is 300 on the Y-axis by 100 X 3 on the X-axis and its just 2d
>ANd yes i noticed the first render is much slower but the subsequent 
>renders are still not fast enough for my purpose.....
>
>>VTK uses OpenGL for rendering - it is just abstracted at a higher level 
>>which is probably hiding from you the thing that you are doing to make 
>>this slow.
>
>So is there any way I can get around this.........? I'd love to be able to 
>use vtk because its easier tahn doing everythign from scratch, or am i doomed?
>
>THank you again for your help its much appreciated!!!!!!!!!!!!!!!
>
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