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The stride API is independent of the surface and does not need to be
repeated for every surface.
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Check that we also allow surfaces to be created using a negative stride.
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Destroy the auxiallary surfaces and contexts.
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Thanks for Behdad for the suggested name improvement. Also, make
it more clear that the stride passed to cairo_image_surface_create_for_data
should come from calling cairo_format_stride_for_width with the
same width.
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Document this function as a required call to get the correct
stride value before calling cairo_image_surface_create_for_data.
This means that previously-failing calls with non-multiple-of-4
stride values are now documented as errors. Also, we now have
the possibility of moving to more stringent alignment constraints,
(one can imagine doing 64-bit or 128-bit boundaries for example).
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- Remove cairo_test_expect_failure. cairo-test.c now checks
env var CAIRO_XFAIL_TESTS to see if the running test is
expected to fail. The reason for expected failure is
appended to the test description.
- Test description is written out.
- Failed/crashed tests also write a line out to stderr (in red),
so one can now redirect stdout to /dev/null to only see failures.
- cairo_test() has been changed to not take the draw function
anymore, instead, draw function is now part of the test struct.
- "make check" doesn't allow limiting backends to test using env
var anymore. To limit backends to test, one should use the
TARGETS variable on the make command line.
- "make check-valgrind" now writes its log to valgrind-log instead
of valgrind.log, to not interfere with test log file processing.
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