diff options
Diffstat (limited to 'backends/platform/sdl/raspberrypi/README.RASPBERRYPI')
| -rw-r--r-- | backends/platform/sdl/raspberrypi/README.RASPBERRYPI | 45 |
1 files changed, 8 insertions, 37 deletions
diff --git a/backends/platform/sdl/raspberrypi/README.RASPBERRYPI b/backends/platform/sdl/raspberrypi/README.RASPBERRYPI index f8d872b519..ab0e674c31 100644 --- a/backends/platform/sdl/raspberrypi/README.RASPBERRYPI +++ b/backends/platform/sdl/raspberrypi/README.RASPBERRYPI @@ -4,12 +4,9 @@ ScummVM-RASPBERRYPI README Notes ============ -This version of ScummVM is specially tailored to use DispmanX, the native 2D -API on the Raspberry Pi. The idea is that scaling and drawing on a double -buffer with a non-blocking vsync wait is all done using the on-board VideoCore -hardware, thus using only a small fraction of the CPU ScummVM uses when ran -on a clunky, software-scaled and desynced X11 environment using the X11 API. -Thus, running this version under an X11 session is not supported. +This version of ScummVM uses SDL2 hardware accelerated graphics, be it +plain SDL2 which in turn uses dispmanx/gles2 or by using gles1 via an +SDL2-configured GLES1 context. Requirements ============ @@ -67,40 +64,14 @@ works as in any other system ScummVM runs on. Building from sources ============================== -We have two options to build once we have the sources in our main GNU/Linux desktop -class PC or in our Raspberry Pi: +Recommended method is building by cross-compiling on a GNU/Linux X86-based computer. +You can find concise instructions for this on the ScummVM wiki: -1) Building on the Raspberry Pi itself, although possible, is an SLOW task for the -little computer unless you use distributed gcc (or distcc for short). - -Local compilation would simply consist of the "standard" GNU/Linux building process: - -cd <sources_dir> - -./configure --enable-dispmanx -disable-debug --enable-release ---enable-optimizations --disable-mt32emu --disable-flac --disable-mad --disable-vorbis ---disable-tremor --disable-fluidsynth --disable-taskbar --disable-timidity --disable-alsa ---disable-scalers --disable-hq-scalers --disable-savegame-timestamp --disable-eventrecorder - -make +http://wiki.scummvm.org/index.php/Compiling_ScummVM/RPI -As you can see, we're manually disabling scalers because we prefer dispmanx for that, which +The configure script is disabling scalers because we prefer dispmanx for that, which makes scalers unnecessary on a CPU limited platform like this, timestamps because most people doesn't have an RTC on the Raspberry Pi, and event recorder to save SD card write cycles. -All these are automatically disabled when we crosscompile by passing "--host=raspberrypi", -which is not the case. - -¡¡It will be an SLOW process, taking several hours to complete, unless you -are running distcc against a fast compilation server!! - -2) If we want to build by cross-compiling on a GNU/Linux X86-based computer, -we can find concise instructions for this can be found on the ScummVM wiki: - -http://wiki.scummvm.org/index.php/Compiling_ScummVM/RPI - -NOTE: Distcc is my preferred method as it does cross-compiling totally transparent -(we build ON the Pi but the actual CPU-intensive compilation is made on an external -server), but it involves building a custom gcc version on the compilation server and -configuring a server and client in both the Raspberry Pi and the server. +All these are automatically disabled when we crosscompile by passing "--host=raspberrypi". Enjoy! |