tree 9199dec09e523415612b4e9821250c7c10be710d
parent a6272de86dc8f8d831fff64722a387e45aa24faa
author Brian Salomon <bsalomon@google.com> 1579894717 -0500
committer Skia Commit-Bot <skia-commit-bot@chromium.org> 1579897109 +0000

Detect implementation read formats on ES.

This can allow for more efficient glReadPixels (e.g. read back of GL_R8
as GL_RED, GL_UNSIGNED_BYTE rather than GL_RGBA, GL_UNSIGNED_BYTE).

skia:8962

Change-Id: Ifa219517f1ce14b79e8af88c799cd5ef35f3a24c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/266567
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>