anbernic in build and disable gbcfx on it

build-rg34xxsp.sh

@@ -202,6 +202,11 @@ export LD_LIBRARY_PATH="$GAMEDIR/libs.aarch64:${LD_LIBRARY_PATH:-}"
 export SDL_GAMECONTROLLERCONFIG="${sdl_controllerconfig:-}"
 # Mali / H700: prefer GLES where available
 export LOVE_GRAPHICS_USE_OPENGLES="${LOVE_GRAPHICS_USE_OPENGLES:-1}"
+# Same GPU class as a phone, but getOS() here says "Linux", so the Android
+# gate (issue #136) would not fire on its own: refuse GBC FX explicitly.
+# Hides the OPTIONS row, pins the level to OFF, and heals a level already
+# persisted in options.lua.
+export POKEPORT_GBCFX="${POKEPORT_GBCFX:-0}"
 
 $ESUDO chmod a+x ./bin/love.aarch64 2>/dev/null || chmod a+x ./bin/love.aarch64
 $ESUDO chmod 666 /dev/uinput 2>/dev/null || true
@@ -292,6 +297,13 @@ Native LÖVE 11.5 port of gen1recomp for Anbernic RG34XXSP on
 
 In-game controls use the normal PortMaster / SDL pad map (rebind under OPTIONS → CONTROLS).
 
+### Display options
+
+GBC FX is disabled on this device (the H700's Mali GPU compiles that present
+pass and then shows a black frame), so the OPTIONS row is hidden. COLORS,
+TILT, ZOOM, VOID FILL and MAX FPS all work. To try it anyway, launch with
+`POKEPORT_GBCFX=1`.
+
 ### First run
 
 Stock OS has no zenity file picker. Put the `.gb` in `lovegame/`, then press