Qt4.6 OpenGL ES 2.0 example

[feldi13]

Hi,

I'm trying to build the Qt4.6 OpenGL ES 2.0 example for the ARMEL target with scratchbox, but after calling /opt/qt4-maemo5/bin/qmake at make following error occurs:


[sbox-FREMANTLE_ARMEL: ~/workspace/opengl/hellogl_es2] > make
g++ -c -pipe -O3 -fno-omit-frame-pointer -fno-optimize-sibling-calls -Wall -W -D_REENTRANT -DQT_GL_NO_SCISSOR_TEST -DQT_NO_DEBUG -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/mkspecs/linux-g++-maemo5 -I. -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtCore -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtGui -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtOpenGL -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include -I. -I/usr/X11R6/include -I. -o main.o main.cpp
g++ -c -pipe -O3 -fno-omit-frame-pointer -fno-optimize-sibling-calls -Wall -W -D_REENTRANT -DQT_GL_NO_SCISSOR_TEST -DQT_NO_DEBUG -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/mkspecs/linux-g++-maemo5 -I. -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtCore -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtGui -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtOpenGL -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include -I. -I/usr/X11R6/include -I. -o glwidget.o glwidget.cpp
g++ -c -pipe -O3 -fno-omit-frame-pointer -fno-optimize-sibling-calls -Wall -W -D_REENTRANT -DQT_GL_NO_SCISSOR_TEST -DQT_NO_DEBUG -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/mkspecs/linux-g++-maemo5 -I. -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtCore -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtGui -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtOpenGL -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include -I. -I/usr/X11R6/include -I. -o mainwindow.o mainwindow.cpp
g++ -c -pipe -O3 -fno-omit-frame-pointer -fno-optimize-sibling-calls -Wall -W -D_REENTRANT -DQT_GL_NO_SCISSOR_TEST -DQT_NO_DEBUG -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/mkspecs/linux-g++-maemo5 -I. -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtCore -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtGui -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtOpenGL -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include -I. -I/usr/X11R6/include -I. -o bubble.o bubble.cpp
/opt/qt4-maemo5/bin/moc -DQT_GL_NO_SCISSOR_TEST -DQT_NO_DEBUG -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/mkspecs/linux-g++-maemo5 -I. -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtCore -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtGui -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtOpenGL -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include -I. -I/usr/X11R6/include -I. glwidget.h -o moc_glwidget.cpp
g++ -c -pipe -O3 -fno-omit-frame-pointer -fno-optimize-sibling-calls -Wall -W -D_REENTRANT -DQT_GL_NO_SCISSOR_TEST -DQT_NO_DEBUG -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/mkspecs/linux-g++-maemo5 -I. -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtCore -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtGui -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtOpenGL -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include -I. -I/usr/X11R6/include -I. -o moc_glwidget.o moc_glwidget.cpp
/opt/qt4-maemo5/bin/moc -DQT_GL_NO_SCISSOR_TEST -DQT_NO_DEBUG -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/mkspecs/linux-g++-maemo5 -I. -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtCore -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtGui -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtOpenGL -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include -I. -I/usr/X11R6/include -I. mainwindow.h -o moc_mainwindow.cpp
g++ -c -pipe -O3 -fno-omit-frame-pointer -fno-optimize-sibling-calls -Wall -W -D_REENTRANT -DQT_GL_NO_SCISSOR_TEST -DQT_NO_DEBUG -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/mkspecs/linux-g++-maemo5 -I. -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtCore -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtGui -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtOpenGL -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include -I. -I/usr/X11R6/include -I. -o moc_mainwindow.o moc_mainwindow.cpp
/opt/qt4-maemo5/bin/rcc -name texture texture.qrc -o qrc_texture.cpp
g++ -c -pipe -O3 -fno-omit-frame-pointer -fno-optimize-sibling-calls -Wall -W -D_REENTRANT -DQT_GL_NO_SCISSOR_TEST -DQT_NO_DEBUG -DQT_OPENGL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/mkspecs/linux-g++-maemo5 -I. -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtCore -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtGui -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include/QtOpenGL -I/targets/FREMANTLE_ARMEL/opt/qt4-maemo5/include -I. -I/usr/X11R6/include -I. -o qrc_texture.o qrc_texture.cpp
g++ -Wl,-rpath-link,/usr/lib -Wl,-O1 -Wl,--hash-style=gnu -Wl,-rpath,/opt/qt4-maemo5/lib -o hellogl_es2 main.o glwidget.o mainwindow.o bubble.o moc_glwidget.o moc_mainwindow.o qrc_texture.o -L/opt/qt4-maemo5/lib -L/usr/X11R6/lib -lQtOpenGL -L/opt/qt4-maemo5/lib -L/usr/X11R6/lib -lQtGui -lQtCore -lGLESv2 -lpthread
glwidget.o: In function `GLWidget::paintTexturedCube()':
glwidget.cpp:(.text+0x150): undefined reference to `QGLShaderProgram::setAttributeArray(int, float const*, int, int)'
glwidget.cpp:(.text+0x178): undefined reference to `QGLShaderProgram::setAttributeArray(int, float const*, int, int)'
glwidget.cpp:(.text+0x1a0): undefined reference to `QGLShaderProgram::setAttributeArray(int, float const*, int, int)'
glwidget.cpp:(.text+0x1b0): undefined reference to `QGLShaderProgram::setUniformValue(int, int)'
glwidget.cpp:(.text+0x1bc): undefined reference to `QGLShaderProgram::enableAttributeArray(int)'
glwidget.cpp:(.text+0x1c8): undefined reference to `QGLShaderProgram::enableAttributeArray(int)'
glwidget.cpp:(.text+0x1d4): undefined reference to `QGLShaderProgram::enableAttributeArray(int)'
glwidget.cpp:(.text+0x1f0): undefined reference to `QGLShaderProgram::disableAttributeArray(int)'
glwidget.cpp:(.text+0x1fc): undefined reference to `QGLShaderProgram::disableAttributeArray(int)'
glwidget.cpp:(.text+0x208): undefined reference to `QGLShaderProgram::disableAttributeArray(int)'
glwidget.o: In function `GLWidget::paintQtLogo()':
glwidget.cpp:(.text+0x230): undefined reference to `QGLShaderProgram::enableAttributeArray(int)'
glwidget.cpp:(.text+0x23c): undefined reference to `QGLShaderProgram::enableAttributeArray(int)'
glwidget.cpp:(.text+0x254): undefined reference to `QGLShaderProgram::setAttributeArray(int, QVector3D const*, int)'
glwidget.cpp:(.text+0x26c): undefined reference to `QGLShaderProgram::setAttributeArray(int, QVector3D const*, int)'
glwidget.cpp:(.text+0x28c): undefined reference to `QGLShaderProgram::disableAttributeArray(int)'
glwidget.cpp:(.text+0x298): undefined reference to `QGLShaderProgram::disableAttributeArray(int)'
glwidget.o: In function `GLWidget::paintGL()':
glwidget.cpp:(.text+0x518): undefined reference to `QPainter::beginNativePainting()'
glwidget.cpp:(.text+0x5e0): undefined reference to `QMatrix4x4::rotate(float, float, float, float)'

... and so on - shortened for maximum post length of 10000 chars ...

glwidget.cpp:(.text._ZN7QVectorI9QVector3DE7reallocEii[QVector<QVector3D>::realloc(int, int)]+0x1ec): undefined reference to `qBadAlloc()'
glwidget.o: In function `QList<Bubble*>::detach_helper()':
glwidget.cpp:(.text._ZN5QListIP6BubbleE13detach_helperEv[QList<Bubble*>::detach_helper()]+0x20): undefined reference to `QListData::detach3()'
bubble.o: In function `Bubble::updateBrush()':
bubble.cpp:(.text+0x630): undefined reference to `QVectorData::free(QVectorData*, int)'
bubble.cpp:(.text+0x67c): undefined reference to `QVectorData::free(QVectorData*, int)'
collect2: ld returned 1 exit status
make: *** [hellogl_es2] Error 1



I installed the qt4.6 tech preview based on the information here: http://wiki.maemo.org/Qt4_Hildon#Usi...w_in_Fremantle
The OpenGL example works well for the x86 target, but the OpenGL ES 2.0 example doesnt work for it, showing up this warning:

make: warning: Clock skew detected. Your build may be incomplete.

... and after trying to run it nothing appears on the Xephyr but this error on scratchbox terminal:
/usr/bin/run-standalone.sh: line 11: 27056 Segmentation fault (core dumped) "$@"
[sbox-FREMANTLE_X86: ~/workspace/opengl/hellogl_es2] > hildon-desktop[25966]: GLIB WARNING ** ClutterX11 - Failed to get XImage of pixmap: e0004d, removing


How can I build the examples for ARMEL (and for x86) to be able to deploy the application to the N900 in a next step?

Thanks in advance,
Chris

[divanov]

Try to remove Qt packages (apt-get remove libqt4-maemo5-core
) and install them back. There is some issue with post-install script, it doesn't work properly in some cases.
Also make sure that Qt 4.5.3 packages are not installed before reinstallation.

[feldi13]

Thanks a lot, that helped!

Now I can build the ES 2.0 example for ARMEL and for x86 target

Is there a possibility to run the example on the emulator, or can it only be tested on the device?

I tried to run the Xephyr for x86 target where it quickly appears but then crashes with following error:
Xlib: extension "Generic Event Extension" missing on display ":2.0".
/usr/bin/run-standalone.sh: line 11: 22299 Segmentation fault (core dumped) "$@"


For the ARMEL target this error shows up:

Xlib: extension "Generic Event Extension" missing on display ":2.0".
X Error: BadWindow (invalid Window parameter) 3
Major opcode: 20 (X_GetProperty)
Resource id: 0xe00001
Xlib: extension "Generic Event Extension" missing on display ":2.0".
QEglContext::defaultDisplay(): Cannot initialize EGL display: "Bad alloc (0x3003)"
QGLContext::makeCurrent(): Cannot make invalid context current
QEglContext::chooseConfig(): Could not find a suitable EGL configuration
Requested: "type=es2 rgba=5,6,5,0 surface-type=window"
Available:
qemu: uncaught target signal 11 (Segmentation fault) - core dumped

[divanov]

Thanks a lot, that helped!

Now I can build the ES 2.0 example for ARMEL and for x86 target

Is there a possibility to run the example on the emulator, or can it only be tested on the device?

I tried to run the Xephyr for x86 target where it quickly appears but then crashes with following error:
Xlib: extension "Generic Event Extension" missing on display ":2.0".
/usr/bin/run-standalone.sh: line 11: 22299 Segmentation fault (core dumped) "$@"


For the ARMEL target this error shows up:

Xlib: extension "Generic Event Extension" missing on display ":2.0".
X Error: BadWindow (invalid Window parameter) 3
Major opcode: 20 (X_GetProperty)
Resource id: 0xe00001
Xlib: extension "Generic Event Extension" missing on display ":2.0".
QEglContext::defaultDisplay(): Cannot initialize EGL display: "Bad alloc (0x3003)"
QGLContext::makeCurrent(): Cannot make invalid context current
QEglContext::chooseConfig(): Could not find a suitable EGL configuration
Requested: "type=es2 rgba=5,6,5,0 surface-type=window"
Available:
qemu: uncaught target signal 11 (Segmentation fault) - core dumped

You can try it only in i386 target with Xephyr. If it crashes, then next step would be analyzing coredump bracktrace.