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 checkout 2c9fdaf7292423c157fc79b5ce43f0f199dd753a

cd mesa 

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

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

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