SDL on DirectFB

 Supports:

 - Hardware YUV overlays

 - OpenGL - software only

 - 2D/3D accelerations (depends on directfb driver)

 - multiple displays

 - windows

 What you need:

 DirectFB 1.0.1, 1.2.x, 1.3.0

 Kernel-Framebuffer support: required: vesafb, radeonfb .... 

 Mesa 7.0.x	   - optional for OpenGL

 /etc/directfbrc

 This file should contain the following lines to make

 your joystick work and avoid crashes:

 ------------------------

 disable-module=joystick

 disable-module=cle266

 disable-module=cyber5k

 no-linux-input-grab

 ------------------------

 To disable to use x11 backend when DISPLAY variable is found use

 export SDL_DIRECTFB_X11_CHECK=0

 To disable the use of linux input devices, i.e. multimice/multikeyboard support,

 use

 export SDL_DIRECTFB_LINUX_INPUT=0

 To use hardware accelerated YUV-overlays for YUV-textures, use:

 export SDL_DIRECTFB_YUV_DIRECT=1

 This is disabled by default. It will only support one 

 YUV texture, namely the first. Every other YUV texture will be

 rendered in software.

 In addition, you may use (directfb-1.2.x)

 export SDL_DIRECTFB_YUV_UNDERLAY=1

 to make the YUV texture an underlay. This will make the cursor to

 be shown.

 Simple Window Manager

 =====================

 The driver has support for a very, very basic window manager you may

 want to use when runnning with "wm=default". Use

 export SDL_DIRECTFB_WM=1

 to enable basic window borders. In order to have the window title rendered,

 you need to have the following font installed:

 /usr/share/fonts/truetype/freefont/FreeSans.ttf

 OPENGL Support

 ==============

 The following instructions will give you *software* opengl. However this

 works at least on all directfb supported platforms.

 As of this writing 20100802 you need to pull Mesa from git and do the following:

 ------------------------

 git clone git://anongit.freedesktop.org/git/mesa/mesa

 cd mesa 

 git checkout 2c9fdaf7292423c157fc79b5ce43f0f199dd753a

 ------------------------

 Edit configs/linux-directfb so that the Directories-section looks like

 ------------------------

 # Directories

 SRC_DIRS     = mesa glu 

 GLU_DIRS     = sgi

 DRIVER_DIRS  = directfb

 PROGRAM_DIRS = 

 ------------------------

 make linux-directfb

 make

 echo Installing - please enter sudo pw.

 sudo make install INSTALL_DIR=/usr/local/dfb_GL

 cd src/mesa/drivers/directfb

 make

 sudo make install INSTALL_DIR=/usr/local/dfb_GL

 ------------------------

 To run the SDL - testprograms:

 export SDL_VIDEODRIVER=directfb

 export LD_LIBRARY_PATH=/usr/local/dfb_GL/lib

 export LD_PRELOAD=/usr/local/dfb_GL/libGL.so.7

 ./testgl