tree 2d01a4652acaec860e8cf21496cc6207a0e28cf5
parent 1846ba3f08ed9164bfa2127f88c5950a558aeccc
author Mike Klein <mtklein@google.com> 1594649262 -0500
committer Skia Commit-Bot <skia-commit-bot@chromium.org> 1594827950 +0000

generalize skvm pixel unpacking

Add a PixelFormat struct and use it to load/gather_unorm().  This handles
loading all pixel formats that are unorm and can fit in 32 bits, with
float and larger formats to follow.  That means this adds SkVMBlitter
support for reading A8, G8, 4444, R8G8, A16_unorm, and R16G16_unorm.

Next step will do the same for stores, allowing arbitrary destinations.

Change-Id: Iabbf6171ee6d5abb44cf131eda6647980767c396
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/302252
Commit-Queue: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Reed <reed@google.com>
Auto-Submit: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Reed <reed@google.com>