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docs/raspberrypi-4b: Add NXDoom configuration docs

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Document the features and limitations of the NXDoom configuration.

Signed-off-by: Matteo Golin <matteo.golin@gmail.com>
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Matteo Golin 2026-07-07 16:20:31 -04:00 • committed by Alin Jerpelea
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commit de4f3bf92c
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Documentation/platforms/arm64/bcm2711/boards/raspberrypi-4b/index.rst
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@ -293,6 +293,27 @@ colourful rectangles on the screen.
``CONFIG_BCM2711_FB_FORCE_RESOLUTION=y`` to force the request of your
configured default resolution instead.
nxdoom
------
This configuration combines features from the ``sd`` and ``fb`` configurations,
and includes the NuttX port of DOOM, :doc:`/applications/games/nxdoom/index`.
Place the WAD file you wish to play on the SD card partition with the NuttX
kernel and other files. You can then play via
.. code:: console
nsh> nxdoom -iwad /sd/doom1.wad
.. warning::
There are currently no input devices on the Raspberry Pi 4B which make DOOM
playable, so you can only stare at the menu for now. Patches welcome!
The Pi's framebuffer rendering causes some small artifacts in the player
window. This would need DMA-based rendering or double-buffered rendering to
improve most likely. Patches also welcome!
lvgl
----