bg: Initial commit

.gitignore

@@ -2,6 +2,6 @@
 **/.vscode/
 
 **/*.fxf
-**/wallpaper.inc
-**/wallpapr.raw
+**/bg.inc
+**/bg.raw
 **/fox32os.img

bg/main.asm

@@ -0,0 +1,24 @@
+; background image utility
+
+    ; open the background file and draw it
+    ; if the file can't be opened, then just exit
+    mov r0, bg_file_name
+    mov r1, 0
+    mov r2, bg_file_struct
+    call open
+    cmp r0, 0
+    ifz call end_current_task
+
+    ; read the background file directly into the background framebuffer
+    mov r0, 1228800 ; 640x480x4
+    mov r1, bg_file_struct
+    mov r2, 0x02000000
+    call read
+
+    call end_current_task
+
+bg_file_name: data.str "bg      raw"
+bg_file_struct: data.fill 0, 8
+
+    #include "../../fox32rom/fox32rom.def"
+    #include "../fox32os.def"

build.sh

@@ -28,9 +28,12 @@ echo "assembling barclock"
 echo "assembling terminal"
 ../fox32asm/target/release/fox32asm terminal/main.asm base_image/terminal.fxf
 
-echo "creating wallpapr.raw"
-../tools/gfx2inc/target/release/gfx2inc 640 480 launcher/wallpaper.png launcher/wallpaper.inc
-../fox32asm/target/release/fox32asm launcher/wallpaper.inc base_image/wallpapr.raw
+echo "assembling bg"
+../fox32asm/target/release/fox32asm bg/main.asm base_image/bg.fxf
+
+echo "creating bg.raw"
+../tools/gfx2inc/target/release/gfx2inc 640 480 bg/bg.png bg/bg.inc
+../fox32asm/target/release/fox32asm bg/bg.inc base_image/bg.raw
 
 echo "adding files to fox32os.img"
 cd base_image