Date: Sat, 11 Aug 2007 02:03:16 +0200 (CEST)

From: couriersud arcor.de
To: slouken@libsdl.org
Subject: Directfb driver for SDL1.3

Hi,

the attachment contains a patch for a SDL1.3 directfb driver. It supports:

- Renderer "directfb":

Hardware acceleration as supported by the underlying directfb driver. With a
radeon X850, testsprite2 runs at 50% to 70% of OpenGL (X11, dri) performance.

Also supports hardware accelerated yuv overlays. This must be enabled by sett
ing:

export SDL_DIRECTFB_YUV_DIRECT=1

- Renderer "opengl"

Supports software opengl using mesa opengl (make linux-directfb).

Some more information may be found in README.DirectFB

There will certainly still be some bugs, and there is some debug code around.
 When I find some time, I will compile against directfb-0.9.25 as distributed
 with ubuntu 7.04.

The diff also contains a fix for SDL_LockYUVOverlay fixing a bug in  *pixels
and pitches initialization.

Kind regards,

couriersud

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%402588

README.DirectFB

@@ -0,0 +1,45 @@
+SDL on DirectFB
+
+Supports:
+
+- Hardware YUV overlays
+- OpenGL - software only
+- 2D/3D accelerations (depends on directfb driver)
+
+What you need:
+
+DirectFB 1.0.0 - required
+Kernel-Framebuffer support: required: vesafb, radeonfb .... 
+Mesa 7.0.x	   - optional for OpenGL
+
+As of this writing 20070810 you need to pull Mesa from git and do the following:
+
+------------------------
+cd mesa 
+make linux-directfb
+make
+
+echo Installing - pleaser 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
+
+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 concurrent 
+overlay and may behave strange if not used with SDL_CreateYUvOverlay
+from SDLcompat.c. 
+