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-rw-r--r--src/osd/sdl/README_SDL20.txt130
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diff --git a/src/osd/sdl/README_SDL20.txt b/src/osd/sdl/README_SDL20.txt
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-======================================================================================
-SDLMAME now supports SDL from version 2.0 on upwards.
-=======================================================================================
-
-
-Warning
-=======
-
-- SDL2.0 still is still under development, the following may or may not
- work.
-- if you are using wine on unix be sure to disable wintab32.dll
-
-Known bugs:
-===========
-
-* SDL1.3/X11: Some compound keys, e.g. "'" are not supported by SDL driver
-* SDL2.0: sdlvideofps does not take -numscreens>1 into account.
-* SDL1.3/WIN32: crashes with -rd d3d
-* SDL1.3/WIN32: resizing does not work
-
-Build SDL 2.0 from HG
-======================
-
-Pull 2.0 from hg. Then
-
-sh autogen.sh
-./configure --prefix=/usr/local/sdl13/ --disable-video-svga --enable-video-directfb --enable-fusionsound
-make
-[sudo] make install
-
-You may leave away the last two enables, if you do not want to play around with directfb - although it is lightning fast now :-)
-
-To build the files in test, do
-
-cd test
-./configure --prefix=/usr/local/sdl13/ --with-sdl-pfx=/usr/local/sdl13
-make
-
-Replace /usr/local/sdl13 above with a safe location, this may as well be a directory in $HOME.
-
-Edit sdl.mak to have
-
-SDL_LIBVER = sdl2
-SDL_INSTALL_ROOT = /usr/local/sdl13
-
-That's it.
-
-make
-./mame -video sdl13 -rd opengl dkong
-
-
-All drivers
-===========
-
-should support:
-
--waitvsync
--prescale
--resolution[X]
--switchres
--numscreens
--screen[X]
-
-The following modes are working:
-
-SDL13
-=====
-
-This is driver using SDL texture and line drawing support. It supports
--prescale, -filter and -waitvsync. The driver determines which pixel
-formats perform best and converts textures to these pixel formats and at
-the same time performs any necessary rotation.
-
-Basic usage examples:
-
-X11/opengl: ./mamed -video sdl13 -rd opengl mario
-DFB/DFB: ./mamed -video sdl13 -vd directfb -rd directfb mario
-
-The performance of the directfb driver depends on the combined
-support of the kernel framebuffer driver and the directfb driver.
-Having loaded radeonfb I get the same performance as with the open source
-radeon X11 driver.
-
-Using the SDL software renderer (preferred is -video soft, thought)
-
-X11,DFB,WIN32 ./mamed -video sdl13 -rd software
-
-Soft:
-=====
-
-./mamed -mt -video soft -sm none -numscreens 2 mario
-
-OpenGL:
-=======
-
-Plain opengl does work. Anything more advanced like pbo, fbo or glsl will
-most probably not work with more than one screen.
-
- ./mamed -mt -video opengl mario -nogl_pbo -nogl_vbo -nogl_glsl -numscreens 2
-
-YUV - modes:
-============
-
- ./mamed -mt -video soft -sm yuy2 mario
-
-Using DirectFB, the following should get you going
-
- ./mamed -mt -video soft -sm yuy2 -vd directfb -rd directfb mario
-
-for accelerated blitting on the framebuffer - provided directfb supports it.
-At least my Radeon R480 is supported.
-
--video soft and -scale_mode (-sm)
-=================================
-
-sdlmame supports 7 scale modes using textures in -video soft:
-
-none: All rendering/scaling in software.
-
-hwblit: Rendering in software/scaling with hardware (if supported)
-
-hwbest: Rendering in software/antialiased scaling with hardware (if supported)
-
-yv12, yv12x2, yuy2, yuy2x2:
-Rendering in software / scaling with hardware (if supported)
-
-Whether these are actually hardware accelerated depends on the SDL driver
-and the hardware. The SDL directfb driver supports all above if the hardware
-supports it. However, only one YUV-texture per display is supported.
-The second window consequently will get "software" YUV blitting.