diff options
Diffstat (limited to 'tools/opengldummy/README')
| -rw-r--r-- | tools/opengldummy/README | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/tools/opengldummy/README b/tools/opengldummy/README new file mode 100644 index 0000000000..e00a681a54 --- /dev/null +++ b/tools/opengldummy/README @@ -0,0 +1,55 @@ +How to use the OpenGL dummy libraries + +The OpenGL Dummy libraries provide both headers and shared object files containing +the symbols for both OpenGL ES2 and EGL. The headers get copied into your sysroot +in the /usr/include folder, and the *.so file gets copied into your /usr/lib/ +folder in both the sysroot, as well as in the target image (distributed on the device). +The library that is generated contains all the symbols needed to succesffuly link +an application as if you had support for OpenGL ES2 and EGL. It is important to +make sure that you do not actually call any of these symbols in your application. + + +Installation: + +You need to have three things: + +Toolchain to cross compile code for your device +Sysroot containing development headers and shared objects to link against when +building applications +Target image inteded to be deployed to your device. + +1) Build the library + Setup your build environment by defining where your compiler and sysroot + are located: + eg. + export CC=/opt/arm-toolchain/usr/bin/arm-linux-gnueabi-g++ + export SYSROOT=/opt/device-name/sysroot/ + + Run the build script inside the client-dummy directory: + cd client-dummy + ./build-gcc.sh + + That should generate a two files: libEGL.so, libGLESv2.so + +2) Installation of files + Copy the include folder to the /usr/include folder in your sysroot. This + installs the OpenGL/EGL headers: + cp -r include/* ${SYSROOT}/usr/include/ + + Copy libEGL.so and libGLESv2.so to the /usr/lib folder in your sysroot: + cp src/lib*.so ${SYSROOT}/usr/lib/ + + Copy the libEGL.so and libGLESv2.so to the target device image and/or device + (this is the copy that is linked against on the device). + +3) Build Qt against this fake OpenGL library + When configuring Qt, make sure to build with es2 support: + ./configure -opengl es2 ... + + Build as normal. + +4) Done + Now when you deploy your Qt build to the device it will depend on the dummy + libs libEGL.so and libGLESv2.so, but as long as you are using the Qt Quick + 2D Renderer plugin you will be able to use QtQuick2 without actually making + any OpenGL/EGL calls. |