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+--- Thread: Preview performance is very slow when using render warps (/showthread.php?tid=1404)
Preview performance is very slow when using render warps - Hughj - 03-19-2013
I have a very simple, low res scene with some smoke being emitted by and object source.
Grid size is 135 x 125 x 150 with a spacing of 1, which sims up to 112MB.
I can play this back in realtime in the viewport and preview window, but performance drops greatly when I apply a render warp. I'm using a simple 4x4x4 FFD.
Each frame takes about 3 seconds to be displayed. This is the same for GPU and non GPU preview, and viewport display, even when the display setting is reduced to minimal settings.
As soon as I disable the render warp in the fume dialogue, performance returns to normal.
I'm using Fume 3.5.1
The performance hit is so great, I wanted to check that this is normal.
Re: Preview performance is very slow when using render warps - sitnisati - 03-21-2013
Hello Hugh,
That is normal as FumeFX has to pass millions of points to FFD to be transformed.
Bend and Twist are a bit faster (depending on parameters).
Regards,
Kresimir Tkalcec