"Phil Holmes" <m...@philholmes.net> wrote in message news:...
"Graham Percival" <gra...@percival-music.ca> wrote in message
news:20101127084430.ga8...@futoi...
On Fri, Nov 26, 2010 at 07:10:25PM -0000, Phil Holmes wrote:
Done this - comparing .39 with .40. I did a pixel-by-pixel
comparison, allowing a leeway of 1 in pixel brightness (range is 0
It identified 21 files with changes.
Wow, I was expecting much more! In that case, this is definitely
worth adding.
Short-term, I think it's enough if you just use it on your local
computer, and use it to identify regressions. In the medium
(3-month)-term, we'll look at adding a pixel comparison to the
official build process, somehow.
Cheers,
- Graham
http://www.holmessoft.co.uk/homepage/lilypond/imagediffs.htm
I've now re-written the program to be multithreaded - max 4 threads, so 4
instances of LilyPond compiling at the same time. My old version also did
logfile checking, but I couldn't get this to work with multiple threads -
think each was over-writing the output from the other thread - so I've
dropped that completely. The multithreaded version ran in about 25 minutes,
generating and comparing about 2000 files. I think the next enhancements
will be to state and flag the differences where they are minor (less than 10
pixels, say).
The PC is unusable when it's running - all the Ghostscript command line
interfaces get in the way.
--
Phil Holmes
Bug Squad
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