Avoid creating MIPs until necessary when MIP bias is active
With sharpened mips, the scale at which we begin to sample level 1 is
(obviously) less than 1. This change avoids creation of mips for images
that are only slightly downscaled (and for which we wouldn't have sampled
those MIPs anyway).
Change-Id: If8ffc79c2ce2ff1f3aae7f5732d8a50aca0e26be
Reviewed-on: https://skia-review.googlesource.com/107801
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
5 files changed