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Link: http://www.fltk.org/str.php?L2257
Version: 1.3-current


I have a fairly complicated piece of code that makes extensive use of
fl_offscreen to compose a complex scene, the fl_read_image to store that
to file.

This builds and works fine with fltk-1.1, but I recently had to rebuild
with fltk-1.3 and the fl_read_image no longer works correctly.

The fl_offscreen appears to be operating fine still.

This is either a fltk-1.3 regression, or it may be caused by our Quartz
implementation (my fltk-1.1 build is QD based, but fltk-1.3 quite rightly
has to use Quartz.)

Attached is a simple offscreen grab demo I wrote, along with the png
helper utilities I use. If you compile this twice, once with fltk-1.1,
once with fltk-1.3, you can see the effect.

>From the attached png samples, it very much looks as if the offscreen is
not made current for the fl_read_image to read from... This does sound
like some sort of Quartz weirdness. 
I have not investigated in any detail, though.
-- 
Ian


Link: http://www.fltk.org/str.php?L2257
Version: 1.3-current

<<attachment: fltk1.1.grabOK.png>>

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