Bitblt的优化:打开显示驱动的precomp.h,里面有个G2D_ACCELERATE,这个是是否使用
三星2D加速的总开关,关闭它,Bitblt可以优化到9MS的样子,不关大概
20到30MS的样子吧!
alphablend: precomp.h中,打开G2D_ACCELERATE,针对alphablend的宏设置如下:
C/C++ code #define G2D_BYPASS_HW_ALPHABLEND (FALSE) //ture
/// Below is suboption
/// In our HW PPA feature has different bleding equation to SW.
#define G2D_BYPASS_PERPIXEL_ALPHABLEND (FALSE)
/// In our HW SCA feature does not change alphavalue, so this can lead to test fail when repetive alphablending.
#define G2D_BYPASS_SOURCECONSTANT_ALPHABLEND (FALSE)
/// This will run HW Bitblt twice, one for SCA and other for PPA, The result has incorrect alphabit
#define G2D_BYPASS_2STEP_PROCESS_PPA_AFTER_SCA (FALSE)