The rendering performance on imx6q dual display

[747550962]

Hi,every nxp experts

I use the imxv4l2src and appsink plugins of gstreamer to get the frame of the MIPI camera(OV5640),then i use QML+OpenGL to render the video and glsl to convert the pix format(YUV->RGB).when i run the program on the LVDS(1280x800),the rendering performance is very well,but when running the same program on the dual display(1920x1080@60,HDMI+LVDS),there is only about 15fps and 300ms rendering delay.

so how can i improve the performance when rendering on dual display

And is it the imx6q board is qualified the high rendering performance of dual display.

The bsp version is Linux4.9.88+Qt5.9.4+xwayland

[igorpadykov]

Hi 747550962

in general video performance depends on internal bus loading and use case.

One can try to tweak IPUs (QoS) priority using IOMUXC_GPR6, described

in sect.36.4.7 GPR (IOMUXC_GPR6) i.MX 6Dual/6Quad Applications Processor Reference Manual

One can also try latest linux releases described on

https://www.nxp.com/design/software/embedded-software/i-mx-software/embedded-linux-for-i-mx-applicat...

Best regards
igor