i.MX ProcessorsのトピックRe: g2d_buffer to wayland wl_buffer

g2d_buffer to wayland wl_buffer

regoni — Tue, 16 Nov 2021 14:01:14 GMT

Hi, i have g2d_buffer-s stream of pictures after processing. I need send it to wayland server. but i must have file descriptor of shared memory for create wl_buffer. I create shared memory and copy g2d_buffer via virtual address, it's working, but it takes too long.

Is there a better way to do this?

Re: g2d_buffer to wayland wl_buffer

Bio_TICFSL — Wed, 17 Nov 2021 13:30:59 GMT

Hello regoni,

How big is your image? it depends of your image, you can erase the CMA and GPU memories.

Regards

Re: g2d_buffer to wayland wl_buffer

regoni — Thu, 18 Nov 2021 09:26:59 GMT

Image is 1280x720x 4 bytes per pixel.

I can clear GPU buffer via g2d_clear func, but i can't hw copy GPU buffer into buffer with virtual address of shm memory.

I am still studying and can't find userspace interfaces for these purposes.

How transform g2d_buffer to wl_buffer?