This makes the entire performance test suite about 10 times faster
on my system. And I don't think that the results are significantly
worse, (many tests are stable after only 5 iterations while some
still run to 100 iterations without reaching our stability criteria).
New names are in line with cairo naming standards.
XIDs are now typedefs not structs.
xcb_generate_id replaces *_new functions.
Also fixed all warnings (one const, new enums in switch statements).
This will finally allow us to very easily add lots of other
tests that will similarly involve iterating over the various
sources and operators of interest.
In particular, many possible error values on a surface provided
to cairo_pattern_create_for_surface were previously being swallowed
and a nil pattern was returned that erroneously reported
CAIRO_STATUS_NO_MEMORY.
This adds a new nil cairo_image_surface to hold CAIRO_STATUS_INVALID_FORMAT.
Previously the detected error was being lost and a nil surface was
returned that erroneously reported CAIRO_STATUS_NO_MEMORY.
This commit begins to show the benefits of the reorganization
from the last few commits. Specifically, we don't need a callback
for every run anymore, and now that the cairo_t* is available to
the paint entry function and the size changes only on the outer
loop, (rather than inside cairo_perf_run), there's no need for
the ugly, static cache for the source surface.
The motivation here is to have the cairo_t context available
to the perf funcs before they call into cairo_perf_run, (so
that they can do one-time setup of source etc. for several
runs).
This effectively reverts the change made in:
3c407aa80a
The justification is that we want to be able to see the
trends of increasing the image size while keeping the test
the same. But changing the number of iterations in a size-
specific way interferes with that. Also, the standard deviation
is almost always better this way, (though it now varies more
by size).
And as a bonus, the total time required to run the suite is now
less.
The following documented symbols were missing this tag:
cairo_clip_extents
cairo_copy_clip_rectangles
CAIRO_STATUS_INVALID_INDEX
cairo_rectangle_t
cairo_rectangle_list_t
