The test-traps provides a reference implementation of the
traps-compositor as used by xlib, so we can use it to generate the
reference images as well. (Of course checking that test-traps is itself
correct and only differs in the renderer! ;-)
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
With over two thousand references images now, it is starting to make the
test directory look cluttered!
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
test-base basically implements rendering ala cairo-1.0 and so serves as
a useful baseline for comparing enhancements and to regression test the
core libraries.
The classic tiger's head; a simple example of a reasonably complex shape
consisting of multiple layers.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Having spent the last dev cycle looking at how we could specialize the
compositors for various backends, we once again look for the
commonalities in order to reduce the duplication. In part this is
motivated by the idea that spans is a good interface for both the
existent GL backend and pixman, and so they deserve a dedicated
compositor. xcb/xlib target an identical rendering system and so they
should be using the same compositor, and it should be possible to run
that same compositor locally against pixman to generate reference tests.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
P.S. This brings massive upheaval (read breakage) I've tried delaying in
order to fix as many things as possible but now this one patch does far,
far, far too much. Apologies in advance for breaking your favourite
backend, but trust me in that the end result will be much better. :)
In the spirit of the new big-{little,empty}-{box,triangle} tests, this test
combines various paths. However, these paths are not only filled but also used
for clipping, resulting in 120 different combinations.
No backend currently succeeds the test. The reference image is a gimp-ination of
the image and test-fallback results and thus certainly wrong. Feel free to fix.
Additionally, this makes the xcb backend die with an ugly failed assert.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Another variant on big-little-box, to make sure we trim the extents
before doing the empty unbounded fixup.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
The wonders one sees when looking at webpages. Who knew people would be
so inventive with clips?
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
A discussion that we've been having is the use of contours in filling,
and for optimizing for convex contours in particular. A devious mind
quickly generates a shape using a convex "contour" whose hull is larger
than its area. This is due to the self-intersection of the "contour"
which if properly excised causes the contour to be classed as concave.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This exercises the bug
https://bugzilla.mozilla.org/show_bug.cgi?id=668921
which is caused by a failure to tighten the extents after tessellating
the path and the unbounded fixup is skipped as it is believed the path
covers the whole area.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
The mime surface is a user-callback surface designed for interfacing
cairo with an opaque data source. For instance, in a web browser, the
incoming page may be laid out and rendered to a recording surface before
all the image data has finished being downloaded. In this circumstance
we need to pass a place holder to cairo and to supply the image data
later upon demand.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Checks that coincident end-points are not converted to joins. It briefly
passed through my mind that was a good thing...
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
The complexity in this shape is that the stroke is reversed upon
itself and retraces the same path in the opposite direction.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
As we use this a performance benchmark, it behooves us to check that we
are rendering it correctly.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
