Posts by mavoka

Hi,
I've used Qt 5.4.1 (currently the latest version) and version 3.10.17-1.0.2 of the Vivante GPU driver files. I didn't test Qt 4.x anymore as there's no reason to use it.

Greetings.

Problem solved. I compiled Qt 5 for I.MX6 by myself (not using the buildroot package) and also upgraded the provided vivante gpu driver to the latest version. Now the Vivante OpenGL example apps run and also I can execute Qt 5 applications with eglfs platform (OGLES2 support).

Okay, I think I could figure out that it's a problem with the Vivante GPU drivers. Even the pre-installed gpu samples (/usr/share/examples) don't start, they crash immediately with a segfault. The directfb examples (e.g. df_andi) are running without a problem (like the Qt examples which don't use OpenGL).

At the embedded world fair you'd running a demo application to show multi-touch and some other things. As you've said, this example was written with Qt with OpenGL support. But what do I have to do to get it work?

Greetings,
mavoka

Hi,
I'm trying to run the Qt 4.8.5 OpenGL example application "hellogl_es2" application on a efus a9 starter kit. Unfortunately, the application crashes with a SegFault.

What I've done so far:

• Enabled "CONFIG_EFUSA9_HDMI" switch in build/linux-3.0.35-fsimx6-V2.0/arch/arm/mach-mx6/board-mx6q-efusa9.h to activate the HDMI interface as fb0
• Configured buildroot (from fsimx6-V2.0 archive) to use the minimal defcon and added these packages:
  
  
  • Freescale i.MX libraries: firmware-imx, gpu-viv-bin-mx6q
  • directfb
  • Qt: demos, examples, OpenGL ES v2.x support, and some other stuff I need
• After compiling, I flashed the new bins via NBoot/U-Boot and set the envvar "extra" to "video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24", so my FB will be initialized with the correct resolution.

What I want to to:
cd /usr/share/qt/examples/opengl/hellogl_es2
./hellogl_es2 -qws -display directfb

Output:

~~~~~~~~~~~~~~~~~~~~~~~~~~| DirectFB 1.6.3 |~~~~~~~~~~~~~~~~~~~~~~~~~~
(c) 2012-2013 DirectFB integrated media GmbH
(c) 2001-2013 The world wide DirectFB Open Source Community
(c) 2000-2004 Convergence (integrated media) GmbH
----------------------------------------------------------------

(*) DirectFB/Core: Single Application Core. (2015-05-09 12:04)
(*) Direct/Memcpy: Using libc memcpy()
(*) Direct/Thread: Started 'Fusion Dispatch' (-1) [MESSAGING OTHER/OTHER 0/0] <8388608>...
(*) Direct/Thread: Started 'VT Switcher' (-1) [CRITICAL OTHER/OTHER 0/0] <8388608>...
(*) Direct/Thread: Started 'VT Flusher' (-1) [DEFAULT OTHER/OTHER 0/0] <8388608>...
(*) DirectFB/FBDev: Found 'DISP3 BG - DI1' (ID 0) with frame buffer at 0x18000000, 8100k (MMIO 0x00000000, 0k)
(*) Direct/Thread: Started 'Keyboard Input' (-1) [INPUT OTHER/OTHER 0/0] <8388608>...
(*) DirectFB/Input: Keyboard 0.9 (directfb.org)
(*) Direct/Thread: Started 'PS/2 Input' (-1) [INPUT OTHER/OTHER 0/0] <8388608>...
(*) DirectFB/Input: IMPS/2 Mouse (1) 1.0 (directfb.org)
(*) Direct/Thread: Started 'PS/2 Input' (-1) [INPUT OTHER/OTHER 0/0] <8388608>...
(*) DirectFB/Input: IMPS/2 Mouse (2) 1.0 (directfb.org)
(*) Direct/Thread: Started 'Linux Input' (-1) [INPUT OTHER/OTHER 0/0] <8388608>...
(*) DirectFB/Input: gpio-keys 0.1 (directfb.org)
(*) Direct/Thread: Started 'Hotplug with Linux Input' (-1) [INPUT OTHER/OTHER 0/0] <8388608>...
(*) DirectFB/Input: Hot-plug detection enabled with Linux Input Driver
(*) DirectFB/Graphics: Generic Software Rasterizer 0.7 (directfb.org)
(*) DirectFB/Core/WM: Default 0.3 (directfb.org)
(*) FBDev/Mode: Setting 1920x1080 RGB32
(*) FBDev/Mode: Switched to 1920x1080 (virtual 1920x1080) at 32 bit (RGB32), pitch 7680
(*) FBDev/Mode: Setting 1920x1080 RGB32
(*) FBDev/Mode: Switched to 1920x1080 (virtual 1920x1080) at 32 bit (RGB32), pitch 7680
(!!!) *** WARNING [letting unprivileged IDirectFBDisplayLayer::GetSurface() call pass until cooperative level handling is finished] *** [idirectfbdisplaylayer.c:183 in IDirectFBDisplayLayer_GetSurface()]
(*) Direct/Thread: Started 'EventBufferFeed' (-1) [MESSAGING OTHER/OTHER 0/0] <8388608>...
(*) Direct/Thread: Started 'EventBufferFeed' (-1) [MESSAGING OTHER/OTHER 0/0] <8388608>...
Segmentation fault

Other Qt demo applications, which don't need OpenGL, are executed properly. What am I doing wrong?

Btw: I've read that the efus a9 will show a fs-net logo while booting. But my screen remains black until a opengl application is started. I could bend the console to tty0, so I'd get a visual feedback while booting. But I'd rather have a logo, so what do I have to do to show it up?

Thanks in advance.

Kind regards,
mavoka