IMX6Solo, how the Qt hellogl2 example works

[SeungGeun_Lee]

I would like to know how the Qt hellogl2 example works.

0. Enviroment

    - i.MX6 Solo custom board + Yocto + "X11" + Qt5

1. Kernel

    - imx_4.19.35_1.1.0

    https://source.codeaurora.org/external/imx/linux-imx/tree/arch/arm?h=rel_imx_4.19.35_1.1.0

2. default dts

    - imx6dl-sabresd.dts

    https://source.codeaurora.org/external/imx/linux-imx/tree/arch/arm/boot/dts/imx6dl-sabresd.dts?h=rel...

3. default config

    - imx_v7_defconfig

    https://source.codeaurora.org/external/imx/linux-imx/tree/arch/arm/configs/imx_v7_defconfig?h=rel_im...

3. my kernel dts (attached file)

4. my kernel config (attached file)

5. dmesg (attached file)

6. qt hellogl2 log (attached file)

7. Xorg log (attached file)

As shown in the picture below, the opengl area only shows a black screen

my__hellogl2_capture.png

[SeungGeun_Lee · Accepted solution]

i resolved issue

1. My xorg.conf created after yocto build is as follows.

root@imx6solosabresd-custom:~# cat /etc/X11/xorg.conf

Section "Device"
    Identifier "i.MX Accelerated Framebuffer Device"
    Driver "vivante"
    Option "fbdev" "/dev/fb0"
    Option "vivante_fbdev" "/dev/fb0"
    Option "HWcursor" "false"
EndSection

Section "ServerFlags"
    Option "BlankTime" "0"
    Option "StandbyTime" "0"
    Option "SuspendTime" "0"
    Option "OffTime" "0"
EndSection

2. When I applied xorg.conf as the contents of the i.MX Reference Manual, opengl worked.

i.MX Reference Manual

https://www.nxp.com/docs/en/reference-manual/i.MX_Reference_Manual_Linux.pdf

5.3.2.5 xorg.conf for i.MX

Section "ServerLayout"
    Identifier "Default Layout"
    Screen "Default Screen"
EndSection

Section "Module"
    Load "dbe"
    Load "extmod"
    Load "freetype"
    Load "glx"
    Load "dri"
EndSection

Section "InputDevice"
    Identifier "Generic Keyboard"
    Driver "kbd"
    Option "XkbLayout" "us"
    Option "XkbModel" "pc105"
    Option "XkbRules" "xorg"
EndSection

Section "InputDevice"
    Identifier "Configured Mouse"
    Driver "mouse"
    Option "CorePointer"
EndSection

Section "Device"
    Identifier "Your Accelerated Framebuffer Device"
    Driver "vivante"
    Option "fbdev" "/dev/fb0"
    Option "vivante_fbdev" "/dev/fb0"
    Option "HWcursor" "false"
EndSection

Section "Monitor"
    Identifier "Configured Monitor"
EndSection

Section "Screen"
    Identifier "Default Screen"
    Monitor "Configured Monitor"
    Device "Your Accelerated Framebuffer Device"
    DefaultDepth 24
EndSection

Section "DRI"
    Mode 0666
EndSection

3. 

my__hellogl2_capture_2.png

[Bio_TICFSL]

Hello SeungGeun,

What i can see the code it working, it just show you the QT while you can variance the alpha blending

Regards