Problem with integrating Qt and SGX drivers

Please read the README inside the below archive, and use the patch.

https://gforge.ti.com/gf/download/docmanfileversion/263/4451/wsegl_pvr2d_1.6.3977.tar.gz

The architecture of the window system has changed with latest SGX drivers. Qt's powervr driver needs an update for this, and this change will be pushed to mainline Qt.

Prabindh, thank you very much! I've lost days and days trying to figure it out.

It seems like hellogl_es2 example works fine.

But when running other Qt demos like ../demos/affine, application slows down drammatically when Use OpenGL button is clicked. The same behaviour have also other demos with that capability (i.e. deform, pathstroke etc.).

I'll try out some other apps and XgxPerf toolkit as well and get back here with results.

Thanks,

Adi

Good to see it worked. To understand how SGX is being used, please refer to below link.

http://processors.wiki.ti.com/index.php/XgxPerf_HMI#Using_Qt.27s_Powervr_backend_for_display.2F_3D_acceleration_in_XgxPerf

Performance will vary depending on how GLES is being used.

Ok. One more question :)

Is it neccessary to rebuild the SGX drivers with a given new headers (pvr.h, wsegl.h)?

It seems to me like a sane step.

The drivers released are already built that way.

Thanks for the info. I thought I had the same error, now I am not sure as driver version is 1.4. The README says "The output should be greater than 1.6. If it is 1.4, no need to use this patch." As this is my first attempt at cross compiling I may have misunderstood something.......

target$> cat /proc/pvr/version    ..gives..;

SGX driver information
Version 1.4.14.2616 (release) /OE/angstrom-dev/work/beagleboard-angstrom-linux-gnueabi/omap3-sgx-modules-1.4.14.2616-r100h/Graphics_SDK_4_00_00_01/GFX_Linux_KM
System Version String: SGX revision = 1.2.5

I am cross compiling using qt-everywhere-opensource-src-4.6.3 and Graphics_SDK_4_03_00_02 / gfx_dbg_es5.x. The target is Beagleboard Xm using file system from Narcissus image builder. This included all qt options. I have since cross compiled qt and updated the target with the new libraries.

QEglContext::createSurface(): Unable to create EGL surface, error = 0x3001

hellogl_es2 fails green window only. Note error number is 0x3001 not 0x300B

cat /etc/powervr.ini

[default]

WindowSystem=libpvrPVR2D_FRONTWSEGL.so.1

Changing this to libpvrQWSWSEGL.so gives the same error.

Any advice would be appreciated.

Thanks, Phil

root@beagleboard:~# /Files/sgxperf_check.sh
WSEGL settings
[default]
WindowSystem=libpvrPVR2D_FRONTWSEGL.so.1
------
ARM CPU information
Processor    : ARMv7 Processor rev 2 (v7l)
BogoMIPS    : 521.97
Features    : swp half thumb fastmult vfp edsp thumbee neon vfpv3
CPU implementer    : 0x41
CPU architecture: 7
CPU variant    : 0x3
CPU part    : 0xc08
CPU revision    : 2

Hardware    : OMAP3 Beagle Board
Revision    : 0020
Serial        : 0000000000000000
------
SGX driver information
Version 1.4.14.2616 (release) /OE/angstrom-dev/work/beagleboard-angstrom-linux-gnueabi/omap3-sgx-modules-1.4.14.2616-r100h/Graphics_SDK_4_00_00_01/GFX_Linux_KM
System Version String: SGX revision = 1.2.5
------
Framebuffer settings

mode "1280x720-60"
    # D: 64.000 MHz, H: 44.444 kHz, V: 59.979 Hz
    geometry 1280 720 1280 720 16
    timings 15625 80 48 3 13 32 5
    rgba 5/11,6/5,5/0,0/0
endmode

Frame buffer device information:
    Name        : omapfb
    Address     : 0x80ad2000
    Size        : 1843200
    Type        : PACKED PIXELS
    Visual      : TRUECOLOR
    XPanStep    : 1
    YPanStep    : 1
    YWrapStep   : 0
    LineLength  : 2560
    Accelerator : No
------
Rotation settings
0
------
Kernel Module information
Module                  Size  Used by
bufferclass_ti          4596  0
omaplfb                 8749  0
pvrsrvkm              126503  2 bufferclass_ti,omaplfb
sdmak                   3743  0
lpm_omap3530            6605  0
dsplinkk              125793  1 lpm_omap3530
cmemk                  21482  0
rfcomm                 33484  0
ircomm_tty             30305  0
ircomm                 16429  1 ircomm_tty
irda                  162973  2 ircomm_tty,ircomm
ipv6                  249063  14
hidp                   11193  0
l2cap                  30104  4 rfcomm,hidp
bluetooth              49221  3 rfcomm,hidp,l2cap
rfkill                 14838  2 bluetooth
minix                  25759  0
rtc_twl                 4451  0
rtc_core               12535  1 rtc_twl
------
Boot settings
mem=99M@0x80000000 mem=384M@0x88000000 console=ttyS2,115200n8 omapfb.mode=dvi:1280x720MR-16@60 root=/dev/mmcblk0p2 rootfstype=ext3 rootwait init=/usr/bin/bootchart-lite
------
Linux Kernel version
Linux beagleboard 2.6.32 #3 PREEMPT Thu Mar 17 08:56:19 CET 2011 armv7l GNU/Linux
root@beagleboard:~#

- Is the application correctly invoked - hellogl_es2 -qws -display powervr ?

- Are the GLES2.0 standalone demos from the graphics SDK working in FLIP mode ? This is important - as I see that you have not allocated memory for vram explicitly to allow triple buffering.

- If other demos are working, perhaps you can send the log with the debug version of the SGX drivers installed, to find the cause.

1/ Yes , hellogl_es2 -qws -display powervr

2/  SGX demos included in Narcissus build all work ok. FLIP mode?? vram?? will have to look that up..any tips/info/links on this?

3/  Just starting on all this so can you advise exact steps to do debug.

As I have just started building system I may not have got the best combination of versions/ builds etc. I would rather do a clean build with known working combinations than chase lots of issues, although happy to provide info if it helps others or fix bugs. Can you please advise the most reliable / least issues approach. eg Angstrom Narcissus online build , cross compile qt everywhere,... Narcissus build uses qt 4.6.3 hence why I chose this. I would rather work with more recent qt everywhere 4.7.2 if possible.

Thanks for the prompt response. This is a great product....although it looks like I have to do a lot more online reading....., Phil

Please add "omapfb.vram=8M" to your bootargs. It should ideally read like this:

mem=99M@0x80000000 mem=384M@0x88000000 console=ttyS2,115200n8 omapfb.vram=8M omapfb.mode=dvi:1280x720MR-16@60 root=/dev/mmcblk0p2 rootfstype=ext3 rootwait init=/usr/bin/bootchart-lite

To enable flip mode, you can edit /etc/powervr.ini and set WindowSystem to "libpvrPVR2D_FLIPWSEGL.so" as below:

[default]

#WindowSystem=libpvrQWSWSEGL.so
#WindowSystem=libpvrPVR2D_FRONTWSEGL.so
WindowSystem=libpvrPVR2D_FLIPWSEGL.so

Couple of points to note:

1. Ensure that /etc/powervr.ini is in UNIX format - no trailing CRLF characters.

2. WindowSystem should point to "libpvrQWSWSEGL.so" if you want to enable Qt demos with SGX

If you still have problems, can you send config.status and qmake.conf used for building Qt? Also, send the debug logs

Regards,

Anand

Thanks for the response, very helpful.  I am not sure if I have installed sgx properly. Now I notice that there is an install.sh in /usr/local/Graphics_SDK_4_03_00_02/gfx_dbg_es5.x. Should I have used that or does Narcissus online builder look after everything?

1/ I have updated bootargs as suggested.

2/ Copied fresh powervr.ini file from SDK to ensure correct format.

running hellogl_es2 with WindowSystem=libpvrPVR2D_FLIPWSEGL gives greeen window and error = 0x300b

running hellogl_es2 with WindowSystem=libpvrQWSWSEGL.so gives greeen window and error = 0x3001

Looking into how to get debug logs.

At the same time as trying to resolve this issue I am currently doing a build using qt everywhere 4.7.2 with the patch applied. I will try that today after making another sd card with original image from Narcissus online builder to try and go back to as clean a build as possible.

Command used to build qt4.6.3;

  /media/Projects/qt-everywhere-opensource-src-4.6.3/configure -prefix /opt/qt-sgx/ -embedded arm -platform /qws/linux-x86-g++ -xplatform /qws/linux-TIarmv7-g++ -depths 16,24,32 -no-mmx -no-3dnow -no-sse -no-sse2 -no-glib -no-cups -no-largefile -no-accessibility -no-openssl -no-gtkstyle -no-dbus -qt-mouse-pc -qt-mouse-linuxtp -qt-mouse-linuxinput -plugin-mouse-linuxtp -plugin-mouse-pc -fast -opengl es2 -qt-gfx-transformed -qt-gfx-vnc -qt-gfx-linuxfb -qt-gfx-multiscreen -plugin-gfx-powervr -D QT_NO_QWS_CURSOR -D QT_QWS_CLIENTBLIT -D __linux__ 

Changes required to get the build to complete qt 4.6.3 build;

qmake.conf;
Add  --sysroot to linker;  QMAKE_LINK = /usr/local/angstrom/arm/arm-angstrom-linux-gnueabi/bin/g++ --sysroot=/media/Projects/beagleSGX/

Add -lusc to linker lib; QMAKE_LIBS = $$QMAKE_LIBS_OPENGL_ES2 -lts -lusc

make errors;
1/ Could not find wsegl.h   added -I/media/Projects/qt-everywhere-opensource-src-4.6.3/src/3rdparty/powervr to Makefile

2/ uic segmentation faults; solution use 4.7.2 uic to generate .h file then copy to hidden  .uic folder. Not sure if this is a valid solution, got same error with build of 4.7.2 overcame by removing uic qpagesetupwidget.ui from the Makefile, so will not have qpagesetupwidget.
These cause uic segmentation fault during make;
/media/Projects/qt-everywhere-opensource-src-4.6.3/src/gui/dialogs/qpagesetupwidget.ui
/media/Projects/qt-everywhere-opensource-src-4.6.3/examples/animation/easing/form.ui
/media/Projects/qt-everywhere-opensource-src-4.6.3/examples/widgets/validators/.uic/release-shared-emb-arm/validators.ui

qmake; Note I am not using Touch Screen;

#w
# qmake configuration for building with arm-linux-g++
#

include(../../common/g++.conf)
include(../../common/linux.conf)
include(../../common/qws.conf)

SYSROOT = /media/Projects/beagleSGX/

# modifications to g++.conf
QMAKE_CFLAGS_RELEASE    = -O3 -march=armv7-a -mtune=cortex-a8 -mfpu=neon -mfloat-abi=softfp
QMAKE_CXXFLAGS_RELEASE    = -O3 -march=armv7-a -mtune=cortex-a8 -mfpu=neon -mfloat-abi=softfp --sysroot=/media/Projects/beagleSGX/

QMAKE_CC = /usr/local/angstrom/arm/arm-angstrom-linux-gnueabi/bin/gcc
QMAKE_CXX = /usr/local/angstrom/arm/arm-angstrom-linux-gnueabi/bin/g++
QMAKE_LINK = /usr/local/angstrom/arm/arm-angstrom-linux-gnueabi/bin/g++ --sysroot=/media/Projects/beagleSGX/
QMAKE_LINK_SHLIB = /usr/local/angstrom/arm/arm-angstrom-linux-gnueabi/bin/g++

#QMAKE_CC                = /usr/local/CodeSourcery/Sourcery_G++_Lite/bin/arm-none-eabi-gcc
#QMAKE_CXX               = /usr/local/CodeSourcery/Sourcery_G++_Lite/bin/arm-none-eabi-g++
#QMAKE_LINK              = /usr/local/CodeSourcery/Sourcery_G++_Lite/bin/arm-none-eabi-g++ --sysroot=/media/Projects/beagleSGX/
#QMAKE_LINK_SHLIB        = /usr/local/CodeSourcery/Sourcery_G++_Lite/bin/arm-none-eabi-g++

#User specific Path - To Be edited by User
#e.g
SGX_SDK_ROOT    = /usr/local/Graphics_SDK_4_03_00_02
TSLIB_INCDIR    = $TSLIB_INSTALL_DIR/include
#TSLIB_LIBDIR     =  $FILESYSTEM_INSTALL_ROOT/usr/lib
TSLIB_LIBDIR     =  /media/Projects/beagleSGX/usr/lib

#Do not edit beyond this
QT_INSTALL_DIR_TIBLT    = $$PWD/../../..

QMAKE_INCDIR_OPENGL_ES2 = $$SGX_SDK_ROOT/GFX_Linux_SDK/OGLES2/SDKPackage/Builds/OGLES2/Include/
QMAKE_INCDIR_OPENGL_ES2 += $$SGX_SDK_ROOT/GFX_Linux_SDK/OGLES2/SDKPackage/Builds/OGLES2/LinuxOMAP3/Include/
QMAKE_INCDIR_OPENGL_ES2 += $$SGX_SDK_ROOT/include
QMAKE_INCDIR_OPENGL_ES2 += $$SGX_SDK_ROOT/GFX_Linux_SDK/OGLES/SDKPackage/Builds/OGLES/Include/
QMAKE_LIBDIR_OPENGL_ES2 = $$SGX_SDK_ROOT/gfx_dbg_es5.x/
QMAKE_LIBS_OPENGL_ES2 = -lEGL -lGLESv2 -lGLES_CM -lIMGegl -lsrv_um

QMAKE_INCDIR_OPENGL += $$SGX_SDK_ROOT/GFX_Linux_SDK/OGLES/SDKPackage/Builds/OGLES/Include/
QMAKE_LIBDIR_OPENGL = $$SGX_SDK_ROOT/gfx_dbg_es5.x
QMAKE_LIBDIR_OPENGL_QT = $$SGX_SDK_ROOT/gfx_dbg_es5.x
QMAKE_LIBS_OPENGL_ES1 = -lEGL -lGLES_CM -lIMGegl -lsrv_um

QMAKE_INCDIR_OPENVG = $$SGX_SDK_ROOT/GFX_Linux_SDK/OVG/SDKPackage/Builds/OVG/Include/
QMAKE_LIBDIR_OPENVG = $$SGX_SDK_ROOT/gfx_dbg_es5.x/
QMAKE_LIBS_OPENVG = -lEGL -lGLESv2 -lGLES_CM -lIMGegl -lsrv_um -lOpenVG -lOpenVGU

QMAKE_INCDIR_EGL = $$QMAKE_INCDIR_OPENGL_ES2
QMAKE_INCDIR_EGL += $$QT_INSTALL_DIR/src/3rdparty/powervr/
QMAKE_LIBDIR_EGL = $$QMAKE_LIBDIR_OPENGL_ES2
QMAKE_LIBS_EGL = -lEGL -lIMGegl -lsrv_um -lGLESv2 -lGLES_CM

QMAKE_INCDIR += $$TSLIB_INCDIR
QMAKE_INCDIR += $$QMAKE_INCDIR_OPENGL_ES2
QMAKE_LIBDIR += $$QMAKE_LIBDIR_OPENGL_ES2
QMAKE_LIBDIR += $$TSLIB_LIBDIR
#QMAKE_LIBS = $$QMAKE_LIBS_OPENGL_ES2 -lt
# PWedit added -lusc
QMAKE_LIBS = $$QMAKE_LIBS_OPENGL_ES2 -lts -lusc

# modifications to linux.conf
QMAKE_AR = /usr/local/angstrom/arm/arm-angstrom-linux-gnueabi/bin/ar cqs
QMAKE_OBJCOPY = /usr/local/angstrom/arm/arm-angstrom-linux-gnueabi/bin/objcopy
QMAKE_STRIP = /usr/local/angstrom/arm/arm-angstrom-linux-gnueabi/bin/strip

#QMAKE_AR                = /usr/local/CodeSourcery/Sourcery_G++_Lite/bin/arm-none-eabi-ar cqs
#QMAKE_OBJCOPY           = /usr/local/CodeSourcery/Sourcery_G++_Lite/bin/arm-none-eabi-objcopy
#QMAKE_STRIP             = /usr/local/CodeSourcery/Sourcery_G++_Lite/bin/arm-none-eabi-strip

load(qt_config)

Your Qt build steps look quite fine. However, the build error #1 should not have occured. The file wsegl.h should be available in the GFX_SDK include.

For 720P, you would need larger buffers. Please use "omapfb.vram=16M" for flip mode.

To install SGX, please update Rules.make in Graphics_SDK_4_03_00_02 and do "make OMAPES=5.x install". On rebooting, you should get the updated DDK version if you run gfxcheck.sh

The following are the steps to check your graphics SDK setup:

1. Install Graphics SDK to the target

2. Set the WindowSystem to Front mode

3. Run "gles2test1 -t" from the target. This should be available in your gfx_dbg_5.x directory on your target

4. Set the WindowSystem to Flip mode

5. Run "glestest1 -t" again from the target.

Steps 3 and 5 should show you valid output. If this is fine, your Graphics SDK setup is fine.

Once Graphics SDK is validated, you can turn to Qt.

1. Set WindowSystem to Qt-WSEGL mode. This is the only mode to be used while running with Qt

2. Run hellogl_es2 with "-display powervr"

Regards,

Anand

Thanks for the detailed response.Just thought I would check before doing the SDK install;  the first test, item 3/ passes , but second one, FLIP mode fails with eglCreateWindowSurface' returned error 'EGL_NOT_INITIALIZED' ( 0x3001).

Now to install sgx

re update Rules.make I am a bit unsure about what the KERNEL_INSTALL_DIR should be . I am setting up to run the install direct on the target beagle boardxM with Angstrom.

I have /lib/modules/2.6.32/kernel which has dir / arch crypto drivers fs lib net sound.  Please advise.....Thanks

A side issue, when I try and run cross compiled examples on the target, eg mainwindows, I get error 

"QFontDatabase::loadFromCache: Font path doesn't match. Found /usr/lib/fonts in database, expected /opt/qt-sgx/lib/fonts"

I have searched for a solution to this and have not found anything. The image I used included qt so clearly confusion about where fonts are. Fonts exist at both locations. Do you know if there is a way to clear/modify the database? Thanks

Qt installation folder on target needs to be on the same path as it was on your host while you were compiling. So what happens is that Qt is searching for the fonts on the wrong path and clearly cannot find them.

You could also try to play with PREFIX flag while running Qt ./configure and set the path manually.

Thanks for this. I was aware of this and hence built qt on host  in /usr/opt/qt-sgx and created the same directory on target and copied the folder from host. The image that I used from the online builder included qt and hence already had qt installed on target in /usr/lib and hence fonts at /usr/lib/fonts . So I think this is more a conflict between the two builds. I am not sure what database it refers to, ie is it linux or qt. The error message says it finds the fonts but that the program that I am attempting to execute wants to use them from /usr/opt/qt-sgx where they are also. I would prefer to keep both builds on the same machine but perhaps this creates too many issues. Thanks Phil

Correction..build was to /opt/qt-sgx on host and hence this folder also created on target.

Hi,

This patch was very helpful. Thank you!

After applying patch, new problem came out. At first, i thought my application is working well. I'm not sure why but when tried to test again after few days, green screen and following errors came up:

QGLShader: could not create shader                                                                                                                                                                                
Vertex shader for simpleShaderProg (MainVertexShader & PositionOnlyVertexShader) failed to compile                                                                                                                
QGLShader: could not create shader                                                                                                                                                                                
Fragment shader for simpleShaderProg (MainFragmentShader & ShockingPinkSrcFragmentShader) failed to compile                                                                                                       
QGLShaderProgram: could not create shader program                                                                                                                                                                 
Errors linking simple shader: ""                                                                                                                                                                                  
QGLShader: could not create shader                                                                                                                                                                                
Vertex shader for blitShaderProg (MainWithTexCoordsVertexShader & UntransformedPositionVertexShader) failed to compile                                                                                            
QGLShader: could not create shader                                                                                                                                                                                
Fragment shader for blitShaderProg (MainFragmentShader & ImageSrcFragmentShader) failed to compile                                                                                                                
QGLShaderProgram: could not create shader program                                                                                                                                                                 
Errors linking blit shader: ""                                                                                                                                                                                    
QGLShader: could not create shader                                                                                                                                                                                
Warning: "" failed to compile!                                                                                                                                                                                    
QPixmap::scaled: Pixmap is a null pixmap

QPixmap::scaled: Pixmap is a null pixmap  

QPixmap::scaled: Pixmap is a null pixmap  

QPixmap::scaled: Pixmap is a null pixmap                                                                                                                                                                         

Application is using QGLWidget  and QGraphicsScene::addPixmap to add pixmap.

Same issue if not using QGraphicsScene and overriding paintEvent.

Looks like there is some kind of pixmap related issue.

>> At first, i thought my application is working well. I'm not sure why but when tried to test again after few days

If this application was working earlier, try to find out what changed.

Are the SGX Graphics drivers installed, and Graphics SDK demos functional ?

How are you invoking the application ? Do you have -display powervr in the argument list ?

Like i said, I'm not sure is it worked well as I'm not sure if i maybe forgot "-display powervr" when testing first time.

I tried demo having rotating triangles, It's working well with libpvrQWSWSEGL.so also but slower then with other drivers, except green background. Yes, I'm using "-display powervr".

I noticed same error on my laptop when user has no enough priviledges to "/dev/nvidia*". But, on bb user is root so privileges should not be a  problem.

Looks like it happens only when QPixmap should be used in code.

Is there any detailed procedure to test?

Thank you

Did you ever get an answer to this?

I too have tests 3) and 5) passed but when I run "/examples/opengl/hellogl_es2/hellogl_es2 -display powervr -qws" I get a window with a green background appearing, and the console says:

QEglContext::createSurface(): Unable to create EGL surface, error = 0x3001

Please can someone help?

Thanks,
Ralph

After applying the patch (from the verified answer), I managed to run apps with no errors.

Hi Bakamovic, thanks for replying. Can I ask which version of Qt you are using? Did you make any changes to qmake.conf apart from specifying where the graphics directory was in the EZSDK?

Thanks again,

Ralph

No. As much as I can remember I didn't change any configuration. My whole setup is explained in my first post (I'm using Qt Embedded 4.6.1).

Given patch sort of worked for me with this version of Qt. I didn't manage to find out why the OpenGL-accelerated Qt demos weren't fast enough. Unfortunately I didn't have more time to investigate such behaviour.

Good luck,

Adi

Okay that's useful to know. I have Qt embedded 4.7.2 plus I'm using a DM8168. The acceleration is slowed down I believe if you mix OpenGL with 2D acceleration as the API cannot handle 2D and 3D acceleration calls efficiently.

I'm going to create a new thread in a forum closer to home but thanks for your reply.

Ralph

How to I add safely the init=/usr/bin/bootchart-lite to the cmdline of my system ?

I have the bootchart-lite install already but was not sure how to make it work ...

Brahim