Chris Wilson 5c03b20732 test/coverage: Exercise invariance under mirror symmetry ...

Massimo noticed that the record/record-flip were not being rasterised as
identical mirror images due to a half-subpixel offset in the tor scan
converter. This test attempts to reproduce this error by rendering a
rhombus around the origin of each cell (that is it generates 4 mirror
images of a triangle in the 4 different orientations0. The expectation
is that each pixel in the group is lit identically as the coverage is
identical.

References: https://bugs.freedesktop.org/show_bug.cgi?id=84396
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

2014-09-29 08:42:17 +01:00

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