i.mx6q openGL update screen abnormal

linya — Tue, 15 Aug 2017 08:45:11 GMT

sometime, i.mx6q openGL update screen abnormal.

The screen don't update after call glSwapBuffers();

I need to call glFlush explicitly to avoid this problem.

The render buffer is active but it is not update to screen.

I save the render buffer through glreadpixels after this issue happend.

I check the saved image, the render buffer is update normal , but it is not update to screen.

My software version is:

yocto-fsl imx-3.14.52-1.1.0_ga

GPU library is imx-gpu-viv-5.0.11.p8.4-hfp.bin

GPU work on fb mode. There are no x11 or wayland.

This issue disappear on any one of below situation

1.downgrade the GPU library version to imx-gpu-viv-5.0.11.p8.3-hfp.bin

2.insert some debug message in my render code.

3.Call glFlush function explicitly frame by frame.

Re: i.mx6q openGL update screen abnormal

gusarambula — Fri, 08 Sep 2017 18:29:39 GMT

Hello Lin Ya,

Are you still seeing this behavior? Would it be possible for you to share a test case in order to reproduce this issue?

Regards,