iMX8QXP-MEK OpenGL application not working

priyank_bhatt — Fri, 25 Sep 2020 14:17:12 GMT

Hello everyone,

We are using the iMX8QXP MEK board with Yocto Zeus, L5.4.24-2.1.0.

We are trying to run an OpenGL application to display images on the HDMI display using an LVDS-HDMI adapter card. We are using the LVDS0 interface for this.

We are using imx-image-multimedia for building image and DISTRO=fsl-imx-xwayland.

In our application we are using OpenGL library, glut, freeglut, and DevIL(Developer’s Image Library).

As per the user manual iMX8QXP supports OpenGL application

When we tried to execute the application it gave this error:

freeglut (./xyz): failed to open display '

Our LVDS node in dts:

&ldb1 { status = "okay"; lvds-channel@0 { fsl,data-mapping = "jeida"; fsl,data-width = <24>; status = "okay"; port@1 { reg = <1>; lvds0_out: endpoint { remote-endpoint = <&it6263_0_in>; }; }; }; };

fbset command output:

root@imx8qxpmek:/unit_tests/Display# fbset mode "1366x768" geometry 1366 768 1366 768 16 timings 0 0 0 0 0 0 0 accel true rgba 5/11,6/5,5/0,0/0 endmode

gpuinfo.sh output:

root@imx8qxpmek:/unit_tests/GPU# ./gpuinfo.sh ---- Running < gpuinfo.sh > test ---- GPU Info gpu : 0 model : 7000 revision : 6214 product : 70002 eco : 0 VIDEO MEMORY: POOL SYSTEM: Free : 249002624 B Used : 19432832 B MinFree : 239597104 B MaxUsed : 28838352 B Total : 268435456 B POOL VIRTUAL: Used : 0 B MaxUsed : 0 B CMA memory info cat: /sys/kernel/debug/gc/allocators/cma/cmausage: No such file or directory VidMem Usage (Process 757: weston): Current Maximum Total All-Types 19383320 19558168 26817656 Index 0 0 0 Vertex 1048576 1048576 1048576 Texture 376832 376832 376832 RenderTarget 17301504 17301504 17301504 Depth 0 0 0 Bitmap 0 0 0 TileStatus 0 0 0 Image 0 0 0 Mask 0 0 0 Scissor 0 0 0 HZ 0 0 0 ICache 272 272 272 TxDesc 768 5120 91392 Fence 8 8 8 TFBHeader 0 0 0 Command 655360 655360 655360 All-Types 19383320 19558168 26817656 Index 0 0 0 Vertex 1048576 1048576 1048576 Texture 376832 376832 376832 RenderTarget 17301504 17301504 17301504 Depth 0 0 0 Bitmap 0 0 0 TileStatus 0 0 0 Image 0 0 0 Mask 0 0 0 Scissor 0 0 0 HZ 0 0 0 ICache 272 272 272 TxDesc 768 5120 91392 Fence 8 8 8 TFBHeader 0 0 0 Command 655360 655360 655360 All-Pools 19383320 19558168 26817656 Default 0 0 0 Local 0 0 0 Internal 0 0 0 External 0 0 0 Unified 0 0 0 System 19383320 19558168 26817656 Sram 0 0 0 Virtual 0 0 0 User 0 0 0 Insram 0 0 0 Exsram 0 0 0 AllocNonPaged 0 0 0 AllocContiguous 19383320 19558168 26817656 MapUserMemory 0 0 0 MapMemory 268435456 268435456 268435456 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Idle percentage:0.000.000.000.00% >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ---- Test < gpuinfo.sh > ended ----

What we have tried:

1. export DISPLAY=:0.0

2. FB_FRAMEBUFFER_0 = /dev/fb0

3. We have tried running the application using imx8qxp-mek.dtb as well as imx8qxp-mek-it6263-lvds0-dual-channel.dtb but the issue is not resolved.

4. Tried adding “fsl, no_edid” into &lbd1 node in imx8qxp-mek.dts file

After export DISPLAY=:0.0 if we run the application we have this error:

freeglut (./xyz): OpenGL GLX extension not supported by display ':0.0'

Any suggestion for running our OpenGL application on the iMX8QXP MEK board would be greatly appreciated.

Thank you

Priyank

Re: iMX8QXP-MEK OpenGL application not working

Bio_TICFSL — Mon, 28 Sep 2020 13:02:13 GMT

Hello Priyant_bhatt,

Freeglut is not supported by default in yocto, I Think you need mesa to run it.

FreeGLUT – FreeGLUT is an open source alternative to the OpenGL Utility Toolkit (GLUT), a window system independent toolkit for writing OpenGL programs. It implements a simple windowing application programming interface (API) for OpenGL. This is not necessary for drawing the model on the window but foes allow for functions such as rotating it.

Regards

Re: iMX8QXP-MEK OpenGL application not working

priyank_bhatt — Wed, 30 Sep 2020 05:38:41 GMT

Hello @Bio_TICFSL

Thank you for a quick reply.

In my build folder, I can see freeglut and mesa. Also when building using imx-image-multimedia I can observe mesa being compiled.

I have added DEPENDS = "devil freeglut mesa" to my .bb file still, I am unable to execute the application.

I also tried by adding

DISTRO_FEATURES_append = " opengl"
CORE_IMAGE_BASE_INSTALL += "libgles1-mesa"
CORE_IMAGE_BASE_INSTALL += "libgles2-mesa"
CORE_IMAGE_BASE_INSTALL += "libegl-mesa"

to my local.conf file.

I am new to the OpenGL application. Please provide any reference we can use to resolve this issue.

Thank you

Priyank

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