i.MX ProcessorsのトピックRe: Problem using OpenGL in Qt Embedded Linux

Problem using OpenGL in Qt Embedded Linux

bonil — Sun, 06 Nov 2011 00:17:53 GMT

Hi guys

After successfully building Qt Embedded Linux on my i.MX51 EVK board with LTIB, I got the following error:

root@freescale /usr/local/Trolltech/demos/embedded/fluidlauncher$ ./fluidlaunche
r -qws
QProcess::start: Process is already running
QGLContext::chooseContext(): The screen is not a QGLScreen
QEglContext::chooseConfig(): Could not find a suitable EGL configuration
Requested: "type=es2 rgba=1,1,1,0 surface-type=window"
Available:
"id=1 type=es1,es2,vg rgba=5,6,5,0 surface-type=window,pbuffer,vg-colorspace-linear,1061
    caveat=none max-pbuffer-size=2048x2048 native-renderable=false
    visual-id=0 visual-type=0 bind-texture=no-rgb,no-rgba
    min-swap-interval=1 max-swap-interval=1 alpha-mask=8
    conformant=true"

....

QGLContext::makeCurrent(): Cannot make invalid context current
QGLContext::makeCurrent(): Cannot make invalid context current
QGLShader: could not create shader
QGLShader: could not create shader
QGLShaderProgram: could not create shader program
Errors linking simple shader: ""
QGLShader: could not create shader
QGLShader: could not create shader
QGLShaderProgram: could not create shader program
Errors linking blit shader: ""
QGLContext::makeCurrent(): Cannot make invalid context current
QGLShader: could not create shader
QGLShader: could not create shader
QGLShaderProgram: could not create shader program
"Shader program failed to link, Error Log:
"
Process error: 1

I used the qt demos Fluidlaucher and enabled OpenGL

Is there something wrong with my framebuffer settings?

root@freescale /usr/local/Trolltech/demos/embedded/fluidlauncher$ fbset
mode "800x480-58"
    # D: 27.000 MHz, H: 29.348 kHz, V: 57.545 Hz
    geometry 800 480 800 1440 16
    timings 37037 40 60 10 10 20 10
    rgba 5/11,6/5,5/0,0/0
endmode

Can somebody help me?

Thanks in advance

Luca

Re: Problem using OpenGL in Qt Embedded Linux

micken — Sun, 06 Nov 2011 05:01:09 GMT

Look at previous answers in tis group. But in short , you need a plugin to qt for doing qtgl

Re: Problem using OpenGL in Qt Embedded Linux

bonil — Sun, 06 Nov 2011 11:12:14 GMT

Should already be done. Here my Qt configuration output and attached the qt-embedded.spec file used from LTIB (I did a few modification to enable OpenGL) and the generated qmake.conf file.

Qt configuration

Qt Embedded Linux WITH OpenGL / OpenVG

Building on: qws/linux-x86-g++
Building for: qws/linux-g++-mx
Architecture: arm
Host architecture: i386

qmake vars .......... cat: .qmake.vars: No such file or directory
qmake switches ......
Build ............... libs examples demos docs translations
Configuration ....... cross_compile release shared dll embedded largefile stl precompile_header exceptions_off minimal-config small-config medium-config large-config full-config phonon phonon-backend accessibility egl openvg opengl opengles2 embedded reduce_exports ipv6 clock-gettime clock-monotonic mremap getaddrinfo ipv6ifname getifaddrs inotify system-jpeg system-png png system-tiff system-freetype system-zlib nis glib gstreamer alsa multimedia svg webkit script scripttools release
Debug ............... no
Qt 3 compatibility .. no
QtDBus module ....... no
QtConcurrent code.... yes
QtScript module ..... yes
QtScriptTools module yes
QtXmlPatterns module no
Phonon module ....... yes
Multimedia module ... yes
SVG module .......... yes
WebKit module ....... yes
JavaScriptCore JIT .. To be decided by JavaScriptCore
Declarative module .. no
STL support ......... yes
PCH support ......... yes
MMX/3DNOW/SSE/SSE2.. no/no/no/no
iWMMXt support ...... no
IPv6 support ........ yes
IPv6 ifname support . yes
getaddrinfo support . yes
getifaddrs support .. yes
Accessibility ....... yes
NIS support ......... yes
CUPS support ........ no
Iconv support ....... no
Glib support ........ yes
GStreamer support ... yes
Large File support .. yes
GIF support ......... plugin
TIFF support ........ plugin (system)
JPEG support ........ plugin (system)
PNG support ......... yes (system)
MNG support ......... plugin (qt)
zlib support ........ system
Session management .. no
Embedded support .... arm
Freetype2 support ... auto (system)
Graphics (qt) ....... linuxfb multiscreen linuxfb
Graphics (plugin) ...
Decorations (qt) .... styled windows default
Decorations (plugin)
Keyboard driver (qt). tty tty
Keyboard driver (plugin)
Mouse driver (qt) ... pc linuxtp tslib
Mouse driver (plugin)
OpenGL support ...... yes (OpenGL ES 2.x)
EGL support ......... yes <EGL/egl.h>
OpenVG support ...... yes
SQLite support ...... plugin (qt)
OpenSSL support ..... no
alsa support ........ yes

Do you see here an error? Or is there some varaible that I have to set on my board?

Re: Problem using OpenGL in Qt Embedded Linux

harald_krapfenb — Thu, 02 Feb 2012 10:54:04 GMT

Same problem here.

Did you solve this puzzle yet?

Greetings,

Harald

Re: Problem using OpenGL in Qt Embedded Linux

harald_krapfenb — Fri, 03 Feb 2012 14:20:27 GMT

As I found out, the problem is related to the Linux-FB not being a QGLScreen for Qt. Therefore, one would need a QGLScreen implementation for i.MX5x's GPU, which is not implemented (Actually, there is just 1 reference implementation).

If you want to use OpenGL nevertheless, install X11 and use the Qt/X11 version. There, you can enable OpenGL.

Regards,
Harald

Re: Problem using OpenGL in Qt Embedded Linux

KrishnaPavan — Wed, 29 Feb 2012 09:41:08 GMT

Hi Harald,

We will just need the X11 libraries in the Worst Case.

Don't know, if we will need EGL 1.3/EGL 2.0

Regards :: Krishna Pavan

Re: Problem using OpenGL in Qt Embedded Linux

KrishnaPavan — Thu, 01 Mar 2012 13:50:55 GMT

Its not EGL 2.0 actually, its EGL 1.4

Re: Problem using OpenGL in Qt Embedded Linux

lipeng1z — Wed, 02 May 2012 02:30:48 GMT

which kind of plugin ? its name and version? please give us an answer in detail , thank you all the time .

Michael Grunditz said:

Look at previous answers in tis group. But in short , you need a plugin to qt for doing qtgl

Re: Problem using OpenGL in Qt Embedded Linux

EricNelson — Fri, 03 Aug 2012 00:04:18 GMT

Hi Pierre,

We'd like to support this effort and get an open source implementation available and will offer $500 and an i.MX6 Sabre Lite or Nitrogen6X to the first to implement and publish a Qt5 Embedded+OpenGL for i.MX5x or i.MX6x.

We can't let RPI have a lead on this front...

http://labs.qt.nokia.com/2011/10/03/chasing-the-raspberry-pi-dragon-opengl-es2-accelerated-qt-pi/#comment-28782

Re: Problem using OpenGL in Qt Embedded Linux

micken — Fri, 03 Aug 2012 08:41:27 GMT

I will make a attempt! I need this as well..

Eric Nelson said:

Hi Pierre,
We'd like to support this effort and get an open source implementation available and will offer $500 and an i.MX6 Sabre Lite or Nitrogen6X to the first to implement and publish a Qt5 Embedded+OpenGL for i.MX5x or i.MX6x.
We can't let RPI have a lead on this front...
http://labs.qt.nokia.com/2011/10/03/chasing-the-raspberry-pi-dragon...
Contact us at mailto:info@boundarydevices.com if you need hardware or software support.