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AM5728: OpenGL black points

Andrej Valek
Intellectual 310 points
Part Number: AM5728


Hello everyone!

I've founded some problem after Kernel + OpenGL migration from my previous post (https://e2e.ti.com/support/processors/f/791/t/852444). There are some black dots on the screen.


I think, there could be a problem with OpenGL driver. How to get rid of them?

Regards,
Andy

  • 0
    TI__Expert 8385 points

    Hello Andy,

    Do you see problems with any other OpenGL application or web page?

    Regards

    Hemant

  • 0 in reply to Hemant Hariyani
    Intellectual 310 points

    Hello Hemant,

    This issue to related to any webpage and it's very sporadic. When you made a zoom out/in, dots are gone. Looks like, that is something not fully "refreshed".
    I've tried on different OpenGL application, but it didn't happen.

    I used examples from qt webpage. But all of the examples are redrawing the screen (I guess).

    On the other hand, when my application is running with "linuxfb" platform, it also didn't happen. Same source code application, QT version, but different CPU, kernel+GPU and OpenGL is working fine.

    Regards,
    Andy

  • 0 in reply to Andrej Valek
    Intellectual 310 points

    Hello again,

    I made some pictures about GPU settings (chrome://gpu). Maybe this will help to you made an analysis what could be wrong.

    Working setup:

    • Linux kernel: ti-lsk-linux-4.4.113
    • OpenGL: ti-sgx-ddk-um_1.14.3699939
    • Powervr: ti-sgx-ddk-km_1.14.3699939

    Non-working setup:

    • Linux kernel: psdk-linux-4.19.59
    • OpenGL: ti-sgx-ddk-um_1.17.4948957
    • Powervr: ti-sgx-ddk-km_1.17.4948957

    Regards,

    Andy

  • 0 in reply to Andrej Valek
    Prodigy 10 points