Compiler/TDA2EVM5777: run QT application error in Linux System on TDA2-evm

user6065254

Part Number: TDA2EVM5777
Other Parts Discussed in Thread: TDA2

Tool/software: TI C/C++ Compiler

Hi:

I compiled the QT library(5.13) with opengl es2 which is provided from ti's website(http://software-dl.ti.com/processor-sdk-vision/esd/TDAx/vision-sdk/latest/index_FDS.html) in rootfs image.

Then, I ported the QT library on TDA2-evm board, and created an '/dev/fb0' symbol link from '/dev/vdrm-controller-0', but I got errors when running the QT application with GUI(examples/gui/rasterwindow) on board.

PVR:(Error): WSEGL_InitialiseDisplay: Failed to create output [0, ]
Could not initialize egl display

So, I have some questions about QT and OpenGL library:

(1) Does TI not support the QT library on TDA2-evm board?

(2) Does TI not support the OpenGL library on TDA2-evm board?

Please help me solve this problem, thank you.

Wxchen

over 4 years ago

0 Ramprasad over 4 years ago

TI__Mastermind 30480 points

Hi Wxchen,

TI has not tested QT applications with vdrm. You have mentioned /dev/fb0, fbdev is no more supported and is replaced by drm.

Please first check if you can run weston-simple-egl type of applications.

Refer this link for the FAQ.

http://processors.wiki.ti.com/index.php/Virtual_DRM_:_An_User_Guide_for_Developing_Usecases#FAQs

Thanks

RamPrasad

0 user6065254 over 4 years ago in reply to Ramprasad

Intellectual 390 points

Hi RamPrasad:

After I tried the weston-simple-egl sample program, it worked perfectly by those instructions:

1. Run the vision_sdk_load.sh from /opt/vision_sdk

2. Run the apps.out from /opt/vision_sdk

3. Choose 'single camera usecase', and select 'DispDistSrc(weston) usecase'.

4. After run the usecase, the HDMI will output an X-desktop like environment.

5. Edit powervr.ini file from /etc, and add two line at the end of file.

[weston-simple-egl]
DbmDriverName=vdrm

6. Run weston-simgle-egl, the program will rotate an triangle on the X-desktop like environment.

Unfortunately, I repeated the 5-6 step to run QT sample application, and I got similar error on the terminal( in desktop environment ).

PVR:(Error): WSEGL_InitialiseDisplay: Failed to create DBM device: No such device [0, ]
Could not initialize egl display

Is any possible to run the QT application in the TDA2 borad?

Thanks

Wxchen

0 Ramprasad over 4 years ago in reply to user6065254

TI__Mastermind 30480 points

Hi Wxchen,

Did you modify your /etc/powervr.ini with this change?

[qtApp-name]
DbmDriverName=vdrm

0 user6065254 over 4 years ago in reply to Ramprasad

Intellectual 390 points

Hi RamPrasad:

Yes, I did modify the file with those changes:

[rasterwindow]
DbmDriverName=vdrm

But it not worked for me.

Wxchen

0 Ramprasad over 4 years ago in reply to user6065254

TI__Mastermind 30480 points

Hi WxChen,

What is the vision-sdk version used here? Can you check the commit-id of omap5-sgx-ddk-um-linux?

If it is 32ad0237d69eb190d5b702a0bb4fac060e4995f2 as mentioned in ti_components/os_tools/linux/kernel/linux-kernel-addon/fs-patches/yocto/meta-glsdk/0003-ddk-update-libs.patch, please upgrade the commit it to bce94b557ffddd3984f8347ec41c5bfe464dff9e

or you can directly download this from git.ti.com and upgrade your filesystem and give a try.

http://git.ti.com/graphics/omap5-sgx-ddk-um-linux/commit/bce94b557ffddd3984f8347ec41c5bfe464dff9e

Thanks

RamPrasad

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Compiler/TDA2EVM5777: run QT application error in Linux System on TDA2-evm