mirror of https://github.com/encounter/SDL.git
Formatting fixes (purely cosmetic, fixes GitHub's rendering)
This commit is contained in:
Ellie
Sam Lantinga
parent
2c6f52d18c
commit
21160cb815
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@ -1,13 +1,12 @@
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Raspberry Pi
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================================================================================
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============
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Requirements:
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Raspbian (other Linux distros may work as well).
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================================================================================
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Features
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================================================================================
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--------
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* Works without X11
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* Hardware accelerated OpenGL ES 2.x
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@ -16,9 +15,8 @@ Raspbian (other Linux distros may work as well).
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* Hotplugging of input devices via UDEV
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================================================================================
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Raspbian Build Dependencies
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================================================================================
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---------------------------
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sudo apt-get install libudev-dev libasound2-dev libdbus-1-dev
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@ -28,18 +26,17 @@ OpenGL ES 2.x, it usually comes pre-installed, but in any case:
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sudo apt-get install libraspberrypi0 libraspberrypi-bin libraspberrypi-dev
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================================================================================
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NEON
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================================================================================
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----
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If your Pi has NEON support, make sure you add -mfpu=neon to your CFLAGS so
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that SDL will select some otherwise-disabled highly-optimized code. The
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original Pi units don't have NEON, the Pi2 probably does, and the Pi3
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definitely does.
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================================================================================
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Cross compiling from x86 Linux
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================================================================================
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------------------------------
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To cross compile SDL for Raspbian from your desktop machine, you'll need a
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Raspbian system root and the cross compilation tools. We'll assume these tools
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@ -92,9 +89,8 @@ To be able to deploy this to /usr/local in the Raspbian system you need to fix u
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perl -w -pi -e "s#$PWD/rpi-sdl2-installed#/usr/local#g;" ./rpi-sdl2-installed/lib/libSDL2.la ./rpi-sdl2-installed/lib/pkgconfig/sdl2.pc ./rpi-sdl2-installed/bin/sdl2-config
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================================================================================
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Apps don't work or poor video/audio performance
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================================================================================
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-----------------------------------------------
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If you get sound problems, buffer underruns, etc, run "sudo rpi-update" to
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update the RPi's firmware. Note that doing so will fix these problems, but it
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@ -108,17 +104,15 @@ See here how to configure this setting: http://elinux.org/RPiconfig
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Using a fixed gpu_mem=128 is the best option (specially if you updated the
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firmware, using CMA probably won't work, at least it's the current case).
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================================================================================
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No input
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================================================================================
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--------
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Make sure you belong to the "input" group.
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sudo usermod -aG input `whoami`
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================================================================================
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No HDMI Audio
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================================================================================
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-------------
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If you notice that ALSA works but there's no audio over HDMI, try adding:
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@ -128,9 +122,8 @@ to your config.txt file and reboot.
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Reference: http://www.raspberrypi.org/phpBB3/viewtopic.php?t=5062
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================================================================================
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Text Input API support
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================================================================================
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----------------------
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The Text Input API is supported, with translation of scan codes done via the
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kernel symbol tables. For this to work, SDL needs access to a valid console.
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@ -160,9 +153,9 @@ this determining the CAPS LOCK behavior:
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sudo dpkg-reconfigure locales
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================================================================================
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OpenGL problems
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================================================================================
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---------------
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If you have desktop OpenGL headers installed at build time in your RPi or cross
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compilation environment, support for it will be built in. However, the chipset
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@ -177,9 +170,8 @@ environment variable:
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export SDL_RENDER_DRIVER=opengles2
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================================================================================
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Notes
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================================================================================
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-----
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* When launching apps remotely (via SSH), SDL can prevent local keystrokes from
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leaking into the console only if it has root privileges. Launching apps locally
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