[cairo] Bug triage analysis
otaylor at redhat.com
Fri Aug 19 14:58:52 PDT 2005
I went a pass through the bugs open in bugzilla. The 15 bugs above the
line are the ones I consider that it might be reasonable to work on
fixing between 1.0.
Below the line is stuff that for one reason or the other will have to
wait to later, isn't a bug in Cairo itself, etc.
I've also included stuff that I closed while making the list, or that
other people fixed while I was making the list to give a sense of
Big stuff in progess
2694 cairo_text_extents fails to do caching
Part of what Keith is working on
Small easy fixes
4137 cairo_rectangle() introduces rounding error
I think this is a couple of different things, but not hard
Less easy fixes we can probably do
2488 Rotating image 180ï¿½ offsets it by 1 pixel
3927 Bogus metrics reported for glyph not available
There's a patch but needs investigation
4106 cairo_surface_create_similar may lose font_options
4120 cairo doesn't build on solaris
4135 Cairo Xlib backend fails when the path contains too many ...
The hard part is figuring out when we overflow. One possbility would
be to just switch to AddTraps when available, then fix Xlib to split.
4140 clipping broken in image backend on powerpc
Patches that should be applied
3893 Inline fixed point operations
3926 True dynamic linking of AlphaBlend
Multiple versions, needs some investigation to figure which one is
4068 Cairo's detection of Vendor String in Xorg is incorrect
4142 multiple test SEGVs because of NULL return from XRenderFi...
Approved patches waiting to be committed
4096 Speedup png reading
Trivial build fixes
3402 Cairo should support non-srcdir builds
3593 The build-env isn't enforcing the correct version of auto...
Apparently what I said about AUTOMAKE_OPTIONS is wrong, but pretty
simple to fix in autogen.sh.
Possible performance enhancements
2713 Better encoding of string positioning
2937 PDF backend renders glyph images
Bugs not so easy or important to fix, probably future stuff
2343 Extreme scaling of dashed line takes a long time
2379 Rounding when calling backend functions
maybe 'sparse' might be a good tool to look at this - somehow we need
to catch fixed_point to integer transitions and make sure that we are
doing the right thing. The particular issue mentioned in the bug
is I think fixed.
2675 SIGFPE in _cairo_fixed_from_double
3018 Strange results from tesellating a rectangle
3753 Stroked circle results in a spike with PDF backend
Future build tweaks
2798 cvs files modified by make'ing cairo
Blocking on gtk-doc work
3661 Use "Requires.private" in cairo.pc
Not too hard if we want to add the .la hacks, but probably better to
adding too much fragile magic right before the release. Sane people
against packages. Sane packagers delete .la files.
Future internals modifications
3752 cairo_stroke should go through backend_surface->fill_path
Future API additions
2765 How do we identify surface types?
Hard to diagnose problems ocurring for only one person
3909 X error received while running gnome-about
Not Cairo bugs
3117 Glitz not checking for usable GL texture size
4020 fix cairo-ocaml for cairo-0.6 API changes
4030 Crash with cairo CVS
4081 updating cairo-demo/path_paint with gtk's native cairo
Closed as already fixed
2757 Row vectors vs. column vectors
Fixed (by various people) while making list
2298 fontconfig shouldn't AC_MSG_ERROR on old freetype
2333 patterns not working with cairo_show_text
2729 Negative dash offsets
2938 Size zero font badness
3851 Calling cairo_image_surface_get_width/height() on the wro...
3915 cairo_pattern_create_for_surface should catch surface == ...
4086 cairo_ps_surface_set_dpi not implemented but appears in t...
4088 Crash in _cairo_image_surface_set_attributes on nil surfa...
4094 _cairo_pattern_set_error tries to write to read-only memory
4097 autogen.sh doesn't check for aclocal/automake usefully
Set to NEEDINFO
2246 cairo and XFree86 4.2.1 across SSH
2742 cairo_clip() segfaults on bad width/height params
Unclear what was going on or even if it was a Cairo problem. Asked
reporter for a fresh backtrace with current versions.
2949 x86_64 cairo tests FAIL: on 9 of 15 tests
3947 Crash: Assertion about cairo status failed
3984 cairo_xlib_surface_create_with_xrender_format ()
4108 make check: 19 out of 50 tests failed (xlib backend)
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