tree 7e8af1153ca300660f2dc1b9ca7d43df62c008dc
parent ca9654e4c6ff1a8a54d3ae1e277ba7e38a0fa00b
author brianosman <brianosman@google.com> 1475087248 -0700
committer Commit bot <commit-bot@chromium.org> 1475087248 -0700

Gradients are serialized (and can be constructed) as SkColor4f + SkColorSpace

Added gradient shader factories that take SkColor4f + SkColorSpace.
Modified Descriptor to only store SkColor4f + SkColorSpace.
Existing factories make use of helper code to convert SkColor and
forward to the new factories.

Bumped SKP version to handle new gradient serialization format.
I was toying with using half-float when serializing SkColor4f,
despite my aggressive packing of flags, this format is significantly
bigger.

Also added GM to use 4f factories. This GM should (and does)
look identical to the existing gradients GM.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2370063002

Review-Url: https://codereview.chromium.org/2370063002