Re: [Golly-test] warning: rendering changes under way

[Andrew T. <an...@tr...>]

> One thing worth trying is to experiment with the rendering chunk size
> (one of the first constants at the top of the *draw.cpp files);
> I think the new ghashbase one may be too big.

I did some timing tests and ended up reducing the ghashdraw.cpp
buffer size to 64x64 (it was 128x128).  Rendering is a tiny bit faster
on Mac and Windows (only by about 1%) but significantly faster on Linux:
about 5 to 40% faster, the latter at scale 1:16.  I'm not sure how to
explain such a big improvement -- perhaps wxGTK is not very efficient
at clipping.  Anyway, that was worth doing.

Andrew