A notice for folks running hgpovray38 or povr.
On my Ubuntu 20.4.1 system just tripped on a significant performance
issue with the preview feature when using the Simple DirectMedia Layer
2.0 version. SDL2.0 the usual default, if the library is available when
You use the preview feature with radiosity always, but one can also set
preview start and end (+sp32 +ep8) for non-radiosity renders.
No idea what's happening, but when timing with /usr/bin/time, what I see
is a big jump in elapsed time. Using x11 or sdl1.2 on my current example
render I get:
31.36user 0.14system 0:09.83elapsed
34.49user 4.54system 0:24.44elapsed
with sdl2.0. (+148%)
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