Adrian Johnson a8344f98e7 test: Add tests for mesh patterns ...

mesh-pattern tests a mesh pattern with non-opaque two overlapping
patches.

mesh-pattern-accuracy tests the accuracy of the color computed in each
point of a patch. It can point out defects in rasterizers which rely
on mesh subdivision only use the mesh shape instead of both shape and
color to decide when the tensor-product patches can be approximated
with Gouraud-shaded triangles.

mesh-pattern-conical is an example of how a conical gradient can be
approximated with a mesh pattern.

mesh-pattern-control-points tests a mesh pattern with control points
in non-default position to verify that their position affects the
color as expected.

mesh-pattern-fold tests a mesh pattern with a patch which folds along
both sides.

mesh-pattern-overlap tests a mesh pattern with a patch which folds
along just one side.

mesh-pattern-transformed tests a mesh pattern with non-identity
transform matrix.

2011-01-01 13:05:14 +01:00

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