Improved Ground Side rendering for x86

Author: tipoman9

Makefile

@@ -60,13 +60,13 @@ star6e: version.h
 native: version.h
 	$(eval SDK = ./sdk/gk7205v300)
 	$(eval CFLAGS += -D_x86)
-	$(eval LIB = -lcsfml-graphics -lcsfml-window -lcsfml-system `pkg-config --libs cairo x11` -lm)
+	$(eval LIB = -lcsfml-graphics -lcsfml-window -lcsfml-system `pkg-config --libs cairo x11 xext` -lXext -lm)
 	$(eval BUILD = $(CC) $(SRCS) -I $(SDK)/include -L $(DRV) $(CFLAGS) $(LIB) -levent_core -O0 -g -o $(OUTPUT))
 	$(BUILD)
 
 rockchip: version.h
 	$(eval SDK = ./sdk/gk7205v300)
 	$(eval CFLAGS += -D__ROCKCHIP__)
-	$(eval LIB = `pkg-config --libs cairo x11` -lm -lrt)
+	$(eval LIB = `pkg-config --libs cairo x11 xext` -lXext -lm -lrt)
 	$(eval BUILD = $(CC) $(SRCS) -I $(SDK)/include -L $(DRV) $(CFLAGS) $(LIB) -levent_core -O0 -g -o $(OUTPUT))
 	$(BUILD)

README.md

@@ -217,7 +217,9 @@ On the cam msposd can be started like this to forward via port 14550 (default ma
 ```msposd --channels 7 --master /dev/ttyS2 --baudrate 115200 --out 127.0.0.1:14550 --matrix 11 --ahi 3 -r 30```   
 On the ground:  
 ```msposd --master 127.0.0.1:14550  --osd -r 50 --ahi 3 --matrix 11 -v```  
-Use ALT+Up/Down Arrow to center the AHI over horizon.
+Alt + Up/Down: increases/decreases AHI_TiltY so that the AHI can be aligned to real horizon
+Alt + Right/Left: increases/decreas AHI_HorizonSpacing that controls the ladder steps at 10 degree (camera Zoom/focal length)
+Current settings are stored locally per FC Id
 
 ### Diagnosing
 Q: _I see a static map of all characters on the screen but no realtime OSD_.