Improve performance of ResizeBicubic:

- for each x value, cache the indexes and the 'advance 'value.
- access input and output through direct pointer access instead
  of through eigen_tensor(b,y,x,c).
- special-case the 3 channel case.
- switch channel/width loops in the general case so that a single
  float[4] can be used for the cache.

After caching 'advance' value, the values used during iteration
could be converted to plain float[4] instead of using the CachedInterpolation
object.

Removed the special cases in CachedInterpolation::Advance; the special
cases for speed are not needed when it's only called once per image.

Added more test cases and benchmark cases.
Change: 150077397

0 files changed, 0 insertions, 0 deletions