On 8 January 2014 08:59, J.F. Rick <self@je77.com> wrote:

In good news, I was able to implement the S/s functionality and both of my SVGs now load properly. I'll try some more soon and commit the changes once I have tested it a bit more.

In bad news, the cacheing was working properly, so I still suspect that rendering forms as a paint is too intensive to be practical for many applications. I'll try to evaluate it a bit more as I replace forms with SVGs. If the forms are causing the problem, then performance should noticeably increase.

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I just did a little comparison:

| surface time |
surface := AthensCairoSurface extent: 200@200.

surface drawDuring: [ :canvas|
��� canvas setPaint: Color red.
��� canvas setShape: (0@0 extent: 100@100).
��� time := [ 10000 timesRepeat: [ canvas draw ] ] timeToRun.
���� ].
time
�0:00:00:00.115

=============

same as above but with:

��� canvas setPaint: (ThemeIcons current backIcon).

time
�0:00:00:00.093
===========

same as above but with:

��� (canvas setPaint: (ThemeIcons current backIcon)) repeat.

time
�0:00:00:00.956

as you can see, even in slowest case, the throughput is:

100*100*10000 = 100'000'000 pixels (texels) per second.

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Cheers,

Jeff

--
Best regards,
Igor Stasenko.