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-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 3rdparty/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.