Two changes to how many colours a texture can reach, and whether they are the
right ones.
A mix alternates its two filaments over a cycle of at most six layers, which
also caps how many distinct mixes exist: eleven ratios per pair of filaments.
Raised to ten, which gives 33 and so lets a gradient be stepped more finely.
Measured on four filaments: a green-to-red gradient goes from 11 usable mixes to
16, and the shipped Colour Bricks from 6 to 10.
Separately, the bilinear neighbour was wrapped for every tiling method. Repeat
does start again at the opposite edge, but a mirrored tile folds back on itself,
so there the texel past the edge is the edge again. Wrapping blended the image's
two opposite edges at every mirrored seam: on a black-to-white ramp the bright
edge sampled as 0.008 instead of 0.988. It also disagreed with the preview,
which binds GL_MIRRORED_REPEAT and folds - so a bake could not match what the
viewport showed.
ExPikaPaka
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