It is used to clear the color. It is 32bit RGBA. Bit[0-7] is R, Bit[8-15] is G, Bit[16-23] is B, Bit[24-31] is A.
for example : mx6/hwcomposer/hwc_composite.cpp · eb17a9d77f3b0d9e18d82000d42d41443ff0beb3 · Android / hardware · G...
It is used to clear the color. It is 32bit RGBA. Bit[0-7] is R, Bit[8-15] is G, Bit[16-23] is B, Bit[24-31] is A.
for example : mx6/hwcomposer/hwc_composite.cpp · eb17a9d77f3b0d9e18d82000d42d41443ff0beb3 · Android / hardware · G...
这个的用法是不是类似keycolor, 就是说FG画面的这种颜色的像素会被替换为BG的的像素,也就是前景画面指定颜色的像素是完全透明的。