This is done by creating multiple buffer views over the buffer based on
the format specified by the attached shaders.

Bug: angleproject:3573
Change-Id: I0372a988938050cc092d8a0959a59d1c893fc6f4
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2536909
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Tim Van Patten <timvp@google.com>