renderlib: CB2 add underflow detect in renderlib [1/1]

PD#SWPL-184946

Problem:
add underflow detect in renderlib

Solution:
add underflow detect in renderlib

Verify:
AH212

Signed-off-by: le.han <le.han@amlogic.com>
Change-Id: Icf5d00f3bab6a5b1e24eaf57bfaee6b3a6812dfc
2 files changed