If limit texture size to a small number, application may
need to reshape texture, lead to more discontinuous
memory access and performance loss.

Bug: angleproject:4086
Change-Id: I502a90535c2e3d13738e23827f4712a77987585e
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1934048Reviewed-by: Xinghua Cao <xinghua.cao@intel.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Xinghua Cao <xinghua.cao@intel.com>