more bits for shader program hash
gm/lumafilter is drawing wrong for me with SkVMBlitter,
but only when I enable its cache. I thought it must be
a collision between program fingerprints, but on further
inspection that doesn't seem to be the case, even 32-bit.
But now that I've done this, might as well keep it.
Even if p(collision) is small, p^2 is smaller.
Other small cleanups to what we hash and how:
- don't include derived fields in Instruction equality and hashing
- use SkOpts::hash() instead of manual std::hash/xor hack
Small struct layout changes to keep everything dense.
Change-Id: I5ba817296f0bfefa0e18f62d103094d0c63bd50d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/266282
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
3 files changed