Apr 12, 2011
https://code.google.com/p/cppanalyse/ Nothing yet :|
Check it out...
Apr 11, 2011
Mar 28, 2011
Mar 26, 2011
Mar 22, 2011
- Initial functional requirements and design are done.
- Programmer produces code he believes is bug-free.
- Product is tested. 20 bugs are found.
- Programmer fixes 10 of the bugs and explains to the testing department that the other 10 aren't really bugs.
- Testing department finds that five of the fixes didn't work and discovers 15 new bugs.
- See 3.
- See 4.
- See 5.
- See 6.
- See 7.
- See 8.
- Due to marketing pressure and an extremely pre-mature product announcement based on overly-optimistic programming schedule, the product is released.
- Users find 137 new bugs.
- Original programmer, having cashed his royalty check, is nowhere to be found.
- Newly-assembled programming team fixes almost all of the 137 bugs, but introduces 456 new ones.
- Original programmer sends underpaid testing department a postcard from Fiji. Entire testing department quits.
- Company is bought in a hostile takeover by competitor using profits from their latest release, which had 783 bugs.
- New CEO is brought in by board of directors. He hires programmer to redo program from scratch.
- Programmer produces code he believes is bug-free....
Feb 7, 2011
- set PATH for the toolchain so that the configure can find the ARM gcc
- Create a directory to store bin, lib, include of the builded-packages:
- mkdir /data/opt
- export MYPATH=/data/opt
- Download and Extract glib-2.20.5, go to the extracted folder:
./configure --prefix=$MYPATH/glib --host=arm-angstrom-linux-gnueabi ac_cv_func_posix_getpwuid_r=yes ac_cv_func_posix_getgrgid_r=yes glib_cv_stack_grows=no glib_cv_uscore=no
./configure --prefix=$MYPATH/pixman --host=arm-angstrom-linux-gnueabi --enable-gtk=no
./configure --prefix=$MYPATH/freetype --host=arm-angstrom-linux-gnueabi
./configure --prefix=$MYPATH/fontconfig --host=arm-angstrom-linux-gnueabi --with-arch=arm --with-freetype-config=$MYPATH/freetype/bin/freetype-config PKG_CONFIG_PATH=$MYPATH/freetype/lib/pkgconfig/
./configure --prefix=/$MYPATH/cairo --host=arm-angstrom-linux-gnueabi PKG_CONFIG_PATH=$MYPATH/freetype/lib/pkgconfig/:$MYPATH/fontconfig/lib/pkgconfig/:$MYPATH/pixman/lib/pkgconfig/ --enable-xlib=no --enable-directfb=no
./configure --prefix=$MYPATH/pango --host=arm-angstrom-linux-gnueabi PKG_CONFIG_PATH=$MYPATH/freetype/lib/pkgconfig:$MYPATH/fontconfig/lib/pkgconfig:$MYPATH/glib/lib/pkgconfig/:$MYPATH/cairo/lib/pkgconfig:$MYPATH/pixman/lib/pkgconfig/ CXX=mips-linux-c++ --with-x=nohttp://changetheworldwithyourpassion.blogspot.com/2009/09/how-to-build-clutter-for-beagleboard.html then copy all to NFS and run the Clutter by yourself.
Have fun :-)
The ClutterTexture is a high level texture wrapper, it is a ClutterActor and can be added directly into a ClutterStage. ClutterTexture is defined with following member
- width: the width of the actor.
- height: the height of the actor.
- max_tile_waste: the number of byte that the slice texture is allowed to have wasted. It is used when no_slice is set to false.
- filter_quality: the filter quality to apply into the texture actor.
- texture: the internal CoglTexture handle.
- no_slice: value indicate that the created texture is not using slicing method to prevent wasting in texture uploading. It means that the big texture will be sliced into multiple sub-texture if no_slice is set to true. When no_slice is set to true, the max_tile_waste is used to determine the number of byte that allow to be wasted for each sub-texture.
- fbo_source: the FBO source if using FBO
- fbo_handle: the FBO texture handle if using FBO
- local_data_width, local_data_height: width and height of the local data buffer when saving the actor into local.
- local_data_rowstride: rowstride of the local data buffer
- local_data: the actual local data buffer
- in_dispose: flag used to check if the texture is in dispose state or not
To create the texture we have following functions
- ClutterActor * clutter_texture_new (void);
- Create a new blank texture object
- ClutterActor * clutter_texture_new_from_file (const gchar *filename, GError **error);
- Create a new texture object from specified file name. The function use clutter_texture_new to create the texture object and then use clutter_texture_set_from_file to set data for the texture.
- ClutterActor * clutter_texture_new_from_actor (ClutterActor *actor);
- Create a new texture object from specified actor. The function is to clone the ClutterActor object into a ClutterTexture object to use as an offscreen buffer. It need the offscreen feature available in the EGL otherwise the function return NULL.
And some following functions to change the texture data
- clutter_texture_set_from_file: set the internal texture data of the texture object from specified file
- clutter_texture_set_from_rgb_data: set using RGB data
- clutter_texture_set_from_yuv_data: set using YUV data
- clutter_texture_set_area_from_rgb_data: set a sub-region using RGB data
Some notes when working with ClutterTexture
- The no_slice property must be set before the texture attempt to load its data buffer. If we don't want to using slicing of the ClutterTexture, we SHOULD NOT use the clutter_texture_new_from_file as default ClutterTexture use slicing method to save memory. We SHOULD use clutter_texture_new, then set the disable-slice property to false then call clutter_texture_set_from_file to setup data buffer for the texture.
- For OpenGL system that allow read/write pixel, we can have the texture memory automatically saved into system memory when the texture is not using via realize/unrealize function. And in that case, the local_data_* variable is used.
- The FBO is much useful when we want to do transition effect without costing the GL to draw the buffer again and again, in that case the texture object is re-used to draw to onscreen.
- ClutterTexture class know nothing about its internal texture loading/uploading, all are control under Cogl layer.