Fbdev with Xserver

[isaac rajakumar]

I am having the following configuration

Xlib app-> Xserver -> Framebuffer(ARGB) . When I try to run some Xlib
application nothing is visible in the display.

At the same time when I used dev2mem and punch the data to the framebuffer
memory, I could see the display without issue.

When I specify the format of the framebuffer (565) I could see the GUI in
the screen but a convoluted data. But some GUI is shown.

My observation.

   1.

   When I dumb the memory and check I could see the alpha channel byte is
   0, That means they are switched off by default.
   2.

   When I send the data using devmem I could see the alpha channel enabled.

My question

1.Is it possible that Xserver does not support alpha channel?.

2.If it supports how should I enable it.

3.Can someone point me to a application which can generate ARGB data.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.x.org/archives/xorg/attachments/20201117/5127f2c8/attachment.htm>