glbench: add texture reuse test

This test uploads a few textures for the first few draws and then
reuses them for subsequent draws.

BUG=chromium-os:36745
TEST=emerge autotest-deps-glbench, run glbench.

Change-Id: Icc0c821836373e2a03008b7fb1ad672c7fee8fa5
Signed-off-by: Simon Que <sque@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/40280
Reviewed-by: Stuart Abercrombie <sabercrombie@chromium.org>
5 files changed