buildingqtwithopenglesacceleratedbysgx.docx

buildingqtwithopenglesacceleratedbysgx.docx

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buildingqtwithopenglesacceleratedbysgx

BuildingQtwithOpenGLESacceleratedbySGX

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Contents[hide]

1About2VersionsTested3Prerequisites

3.1UsefulLinks3.2PSPLinuxKernel3.3GraphicsSDK3.4FileSystem3.5Tslib3.6QtEmbeddedSource3.7PATH

4BuildingQtwithOpenGLES5RunningtheQtApplication6CompilingyourQtApplications7Glossary/Acronyms

About

ThispageismadewithamotivationtoguidetheusersofTIProcessorstobuildQtEmbeddedSDKwithOpenGLES1.x/2.x（3DGraphics）supportacceleratedbytheSGX-3DGraphicsHardwarepresentontheTIchip.

ToBuildQtEmbeddedwithoutOpenGLESsupport,pleasefollowtheprocedureatthislink

PleaserefertothispageforanoverviewofusingQtQuickfeatureintroducedinQt4.7VersionsTested

PSP-SDK:

03.00.01.06

GFXSDK:

3.01.00.06Prerequisites

UsefulLinks

PleaserefertothislinkPSPLinuxKernel

ThelatestPSPLinuxKernelshouldbecompiledandtestedontheEVM.

Test:

TheEVMboardbootsupandloadsthefilesystemwithoutanyproblemGraphicsSDK

ItshouldbecompiledagainstthekernelbeingusedonthetargetEVM

ThecompiledlibrariesshouldbeinstalledinthefilesystemtobeusedonEVM

WewillcallthedirectorypathinwhichGraphicsSDKonhostsystemisinstalledas$SGX_SDK_ROOT

Wewillneedtoexportthe$SGX_SDK_ROOTinqmake.conf（pleaserefer"Step2"ofBuildingQtwithOpenGLESbelow）

Test:

The3DGraphicsDemolocatedonyourtargetfilesystem（/opt/gfxsdkdemos/ogles/）likeOGLESChameleonMan,OGLESEvilSkull,OGLESCoverflowetcshouldrunwithoutanyerrorsFileSystem

Theuserwillneedtohaveacopyofthefilesystemtobeusedontargetinstalledonthehostmachine.ThecopyofthefilesystemonthehostmachinesshouldhavetheGraphicsSDKlibrariesinstalledinit.

Wewillcallthedirectorypathinwhichthefilesystemisinstalledonhostsystemas$FILESYSTEM_INSTALL_ROOT

Test:

TheEVMboardbootsupandloadsthefilesystemwithoutanyproblems.Noprobleminrunningthe3DGraphicsDemoasmentionedaboveinGraphicsSDK-Test.Tslib

SourceDownload-http:

//prdownload.berlios.de/tslib/tslib-1.0.tar.bz2

About:

Tslibisanabstractionlayerfortouchscreenpanelevents,aswellasafilterstackforthemanipulationofthoseevents.ItwascreatedbyRussellKing,ofarm.linux.org.uk.Tslibisgenerallyusedonembeddeddevicestoprovideacommonuserspaceinterfacetotouchscreenfunctionality.Thisisoptional

Wewillcallthedirectorypathinwhichtheabovepackageisinstalledonhostsystemas$TSLIB_INSTALL_DIR

Youwillneedtoexportthehostsystem'sdirectorypathoftslib.handlibts.sorespectivelyinTSLIB_INCDIRandTSLIB_LIBDIRinqmake.conf.（pleaserefer"Step2"ofBuildingQtwithOpenGLESbelow）

Youwillalsoneedtoappend"qt-mouse-tslib"intheconfigureoftheQtEmbedded（mentionedinStep3ofBuildingQtwithOpenGLES）Tslibfilespaths:

tslib.h:

$TSLIB_INSTALL_DIR/tslib-1.0/src

libts.so:

$FILESYSTEM_INSTALL_ROOT/usr/lib/

youwillneedtocreateasoftlinkoflibts-1.0.so.0aslibts.soasfollows:

Host$cd$FILESYSTEM_INSTALL_ROOT

Host$cdusr/lib

Host$ln-slibts-1.0.so.0libts.so

QtEmbeddedSource

TheuserwillneedtodownloadthelatestQtembeddedsourcecodeonhishostmachinewhichisbeingusedtobuildQt.

WewillcallthedirectorypathinwhichtheQtembeddedsourceisinstalledonhostsystemas$QT_INSTALL_DIRPATH

Pleaseexportthecodesourcerytoolchainversioncs2009q1orhigherinyourpath

Host$exportTOOLCHAIN_INSTALL_ROOT=/path/to/toolchain_install_root

Host$exportPATH=$PATH:

$TOOLCHAIN_INSTALL_ROOT/bin

Test:

Executethecommandsbelowandconfirmthat"g++"beingusedisfromthegccofthehostmachineand"arm-none-linux-gnueabi-g++"beingusedmatchestherecommededcodesourcerytoolchainversionfromtheGFX-SDKguidefortheGFX-SDKbeingused.Host$g++--version

Host$arm-none-linux-gnueabi-g++--version

Note:

Foranyproblemsinanyoftheprerequisitesabove.PleaserefertoUsefullinksaboveorpostyourquestionsonBuildingQtwithOpenGLES

YoucanfollowthesestepstobuildQtwithOpenGLESsupportforanyARMCortex-A8basedTIProcessor.

Step1:

Itisassumedthatyouhavesatisfiedalltheprerequisitesasmentionedabove.Step2:

Downloadthistarball

-Thistarballhastheqmake.confneededtoconfigureQtEmbeddedwithOpenGLESacceleratedbySGX

-Theparentfolderisnamedaslinux-TIarmv7-sgx-g++andthisnamewillbeusedinconfigurebelowfor"-xplatform"Copyitto$QT_INSTALL_DIR/mkspecs/qws/

Host$cplinux-TIarmv7-sgx-g++.tar.gz$QT_INSTALL_DIR/mkspecs/qws/

untaritinsamedirectory:

Host$cd$QT_INSTALL_DIR/mkspecs/qws/

Host$tarxzvflinux-TIarmv7-sgx-g++.tar.gz

Modifythefollowingvariablesinqmake.confunder$QT_INSTALL_DIR/mkspecs/qws/linux-TIarmv7-sgx-g++/qmake.conf

SGX_SDK_ROOT=/directory/path/to/Graphics/SDK/on/host

Optional:

FortouchscreensupportinQtEmbeddedusingtsliblibrary（Note:

Youwillneedtofulfullthetslibpre-requisitesasmentionedabove）

TSLIB_INCDIR=$TSLIB_INSTALL_DIR/tslib-1.0/src

TSLIB_LIBDIR=$FILESYSTEM_INSTALL_ROOT/usr/lib/（RefertoGlossaryand/orprerequisitesaboveformoreinformationonsettingthesevariables）Step3:

IfyouareusingGraphicsSDK4.04.00.02+,copytheWSEGL2patchtoQtdirectoryonhostandapplythepatchHost$cd$QT_INSTALL_DIR

Host$patch-p1<0001-wsegl2-support.patch

Step4:

ThecommandbelowwilllistalltheconfigurefeatureoptionsavailableinQt.YoucanconfigurethefeaturessupportedinQtEmbeddeddependingonyourApplication'srequirement

Host$cd$QT_INSTALL_DIR

Host$./configure--helpSampleConfigureforQtembedded:

Host$./configure-prefix<QT_SDK_INSTALL_DIR>-embeddedarm-platformqws/linux-x86-g++-xplatformqws/linux-TIarmv7-sgx-g++-depths16,24,32

-no-mmx-no-3dnow-no-sse-no-sse2-no-glib-no-cups-no-largefile-no-accessibility-no-openssl-no-gtkstyle-qt-mouse-pc-qt-mouse-linuxtp

-qt-mouse-linuxinput-plugin-mouse-linuxtp-plugin-mouse-pc-fast-opengles2-qt-gfx-transformed-qt-gfx-vnc-qt-gfx-linuxfb-qt-gfx-multiscreen

-qt-mouse-tslib-plugin-gfx-powervr-DQT_NO_QWS_CURSOR-DQT_QWS_CLIENTBLIT

Note:

"-prefix"optionintheconfigureabovepointstothepathwhereyouwanttoinstalltheQtSDKontarget

"-platformqws/linux-x86-g++inconfigureaboveassumesyourhostmachineCPUtobeof32-bit.For64-bit,use"-platformqws/linux-x86_64-g++"

-xplatformqws/linux-TIarmv7-sgx-g++isthefolderpathofqmake.conftobeusedtoconfigureQtEmbeddedrelativeto"$QT_INSTALL_DIR/mkspecs/"

"-opengles2"configureQtEmbeddedwithOpenGLES2.xoptionpleaseuse"opengles1"toconfigureQtEmbeddedwithOpenGLES1.xoption.Onlyoneoptioncanenabledatatime.

Optional:

Ifyoudon'tneedtouchscreensupport,remove"-qt-mouse-tslib"fromtheconfigurecommandabove.Inaddition,remove"-lts"fromtheqmake.conf.Youwillneedtosatisfythepre-requistiesmentionedabovetoenabletouchscreensupport.Step5:

Host$make

Host$makeinstall

Aparallelbuildwithmakecanbeinvokedusingthe-jflage.g"make-j8"

InstallstheQtSDKatthelocation$QT_SDK_INSTALL_DIRdefinedin-prefixStep6:

CopytheQtSDKlibrarytotheTargetFilesystemRunningtheQtApplication

TorunQtexamples&demos,youwillneedtocopy/installtheQtSDKlibrariestothetargetfilesystemandbringuptheTargetEVM

Forthecommandsbelow,IhaveinstalledmyQtSDKlibrariestothepath:

/opt/qt-embeddedonmyTargetFilesystem

Target#exportLD_LIBRARY_PATH=/lib:

/usr/lib:

/usr/local/lib:

/opt/qt-embedded/lib

IfyouneedtoenabletheLCDtouchscreenthenreferthestepsbelow:

Target#exportTSLIB_TSDEVICE=/dev/input/touchscreen0

Target#exportQWS_MOUSE_PROTO=Tslib:

/dev/input/touchscreen0

BeforerunningOpenGL-basedQtappsonOMAP35x,youmustcreateapowervr.inifile.Todothis,executethefollowingcommandsontherunningtarget:

cat>/etc/powervr.ini<<_EOF

[default]

WindowSystem=libpvrQWSWSEGL.so

_EOF

Runningademo:

Target#cd/opt/qt-embedded/examples/opengl

Target#cdtextures

Target#./textures-qws-displaypowervr

Youcanseetheoutputeitheronthelcdordvioutputdependingonhowyouconfiguredyourtargetboardtooutput.FormoreinfoonthatpleasereferyourQtApplications

Exportthetoolchainasmentionedin"PATH"underprerequisitesabove

Exportthe"qmake"foundunder$QT_SDK_INSTALL_DIR/bin/qmake

Host$exportPATH=$PATH:

$QT_SDK_INSTALL_DIR/bin/qmake

cd/path/to/Qt/Application/source

Host$qmake-project

Host$qmake-specqws/linux-TIarmv7-g++（PleaseseetheNotebelow）

Host$make

Note:

-Thevaluefor-specisthefolderpathofqmake.confrelativeto"$QT_INSTALL_DIR/mkspecs/"usedtoconfigureQtEmbedded.Thevalueissameastheoneusedfor"-xplatform"intheconfigureabove.

e.g.Inthecaseabove,iftheqmake.confispresentat"$QT_INSTALL_DIR/mkspecs/qws/linux-TIarmv7-g++"thenthevariableusedwillbe"-specqws/linux-TIarmv7-g++"CopytheapplicationexecutabletotheTargetEVM'sfilesystem

RuntheapplicationasmentionedaboveBacktoMainPageGlossary/Acronyms

Thefollowingvariablesareusedinthewikiarticle.YouwillneedtosubstitutetheactualdirectorypathsofrespectivevariablesasexplainedbelowwhilebuildingQtinsteadofthe"$VARIABLE"HostMachine

Workstationtobeusedtobuild/compileQt

SGX_SDK_ROOT

（Host）Di