how to display OpenGLES UI on video

wangyanqing — Mon, 29 Sep 2014 10:05:21 GMT

I need to display UI based on OpenGLES on video, below is my configuration:

hdmi==>/dev/fb2 (BG) /dev/fb3(FG)

==>/dev/video17 /dev/video18

I config fb2 and fb3 to make them have the same resolution, and make in-pixel alpha blending work,

then I display UI on fb3, and use mfw_v4lsink to display video on /dev/video17, everything works well

except, mfw_v4lsink will blank HDMI when start to play a new song every time, because fb2 is primary

channel, and mfw_v4lsink will blank /dev/fb2.

I want to know how to fix it , or is there a workaround????

It is very strange I can't find the answer on Internet, don't many people have such desired to draw UI on video?

Thanks.

Message was edited by: Wang YanQing

topic how to display OpenGLES UI on video in i.MX Processors