Use two levels of pthread support: a minimal level used to
build cairo itself, and a full level to build threaded apps
which want to use cairo. The minimal level tries to use
pthread stubs from libc if possible, but falls back to the
full level if that's not possible. We use CFLAGS=-D_REENTRANT
LIBS=-lpthread to find a real pthread library since that seems
to work on every unix-like test box we can get our hands on.
In that check, we call functions that require a specific surface type
with surfaces of a different type and check that they don't crash and
set the correct error.
In particular, it checks that finished and surfaces in an error state do
not do bad things, like cause crashes.
So far this test only checks surface APIs, but it should be extended to
cover all APIs.
Please update this test when new APIs get added.
Motivated by https://bugs.launchpad.net/ubuntu/+source/cairo/+bug/600622
How did that get there? I obviously ran the test to generate the output,
so where did it spring as it is the old version of the function?
From 16364768d7.
Mysteries will never cease.
halo uses text_path + stroke + (fill | show_text) to generate a "halo"
around the string. This is to try to replicate a bug described by Ian
Britten in the PDF backend where the rendering of the show_text looked
distorted compared to the stroke.
make distcheck complains of remanents being left under test/ after a
clean, notably the files used to check the capabilities of a similar
surface and the fallback-resolution output.
Specifying individual tests to run is more common than using a group
chosen from a keyword, so change the default matching mode and introduce
'-k' to select by keyword.
A couple of different shapes that aim to test the tessellation side of
the rasterisers more... And worryingly there does seem to be an
unexpected systematic error.
In order to support blend modes, we need to use a clear background
whilst rendering the PDF, which inspired the use of DEST_OVER to avoid
having to render to an intermediate surface. However, the adjunct of
using subpixel text means that we cannot simply using the alpha channel
as the sole mask and so need to render to an intermediate and paint it
over an opaque background.
This reverts commit 506b2ebe71.
We have conflicting requirements here. In order to support extended
blend modes correctly we need to use DEST_OVER, at the expense of
supporting subpixel text. More thought required.
