kc3-lang/angle

2014-04-29T16:17:22

Store current pack operation as a queued command. The pack pixels operation is split in two halves: a GPU copy then a CPU readback. We defer the CPU readback until we can't wait any longer. That is, we do the readback when the user maps the buffer, or there's another readback or internal operation. This offers the benefits of doing as much GPU work as asynchronously as possible, and only doing the readback work on related API calls (map or subsequent pack calls). BUG=angle:511 Change-Id: I95a01da2b0e842438b180e8cdbb382c9a46ae210 Reviewed-on: https://chromium-review.googlesource.com/197836 Tested-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>