[i.MX8QM] Weston g2d renderer: video cannot reach 30 fps when display with other animation

dothanhtrung · ‎09-05-2022

Hi,

I am comparing performance between g2d renderer and GL renderer in Weston. And in a case, displaying video over a Qt animation window, video cannot reach 30 fps in g2d renderer, although it can in GL renderer.

My test environment is:

Board: Apalis i.MX8QM
OS: Toradex's Linux Reference Multimedia
Weston: lf-5.10.y-1.0.0
imx-dpu-g2d: 1.8.14
Monitor: 1920x1080 monitor
Test video: 720p@30

I have tested by running 2 programs in the same time: gst-launch-1.0 and an example qt app moveblocks (with a small modification to make it show in fullscreen).

Step 1: Run moveblocks first, in fullscreen.
Step 2: Play video (1280x720, 30fps) with command:

gst-launch-1.0 -v filesrc location=720p.mkv \
    ! matroskademux ! queue \
    ! h264parse ! v4l2h264dec \
    ! queue \
    ! fpsdisplaysink \
        video-sink="waylandsink window-width=1280 window-height=720" \
        text-overlay=false sync=false

Screen will look like this: with Qt animation behind and video view on top.

Result is:

	g2d renderer	GL renderer
Video FPS	< 20 FPS	30 FPS

I thought i.MX8QM could handle 720p@30 video easily when display with other windows. Are there any limitations prevent g2d renderer playing video in higher fps? or do you have any suggestions to improve performance of playing video in g2d renderer?

Thank you very much.

Bio_TICFSL · ‎09-05-2022

Hello dothanhtrung,

You are using toradex board with toradex bsp, with latest BSP from nxp you can have the 30fps with qt and g2d.

Regards

dothanhtrung · ‎09-08-2022

Thank you. I have tried download image for LF_v5.15.5-1.0.1_images_IMX8QMMEK. However, it cannot boot on the Apalis board. Do I need to use another image of build it with Yocto?