Add example for the logo and ensure that it gets included in the library

agb/examples/test_logo.rs

@@ -0,0 +1,41 @@
+#![no_std]
+#![feature(start)]
+
+extern crate agb;
+
+use agb::display::{example_logo, tiled0};
+
+#[start]
+fn main(_argc: isize, _argv: *const *const u8) -> isize {
+    let mut gba = agb::Gba::new();
+    let mut gfx = gba.display.video.tiled0();
+
+    gfx.set_background_palettes(example_logo::PALETTE_DATA);
+    gfx.set_background_tilemap(example_logo::TILE_DATA);
+
+    gfx.background_0.enable();
+    gfx.background_0
+        .set_background_size(tiled0::BackgroundSize::S32x32);
+    gfx.background_0
+        .set_colour_mode(tiled0::ColourMode::FourBitPerPixel);
+
+    gfx.background_0.set_screen_base_block(20);
+
+    let mut entries: [u16; 32 * 20] = [0; 32 * 20];
+    for i in 0..(32 * 20) {
+        let x = i % 32;
+        let y = i / 32;
+
+        if x >= 30 {
+            continue;
+        }
+
+        let tile_id = (x + y * 30) as u16;
+        let palette_entry = example_logo::PALETTE_ASSIGNMENT[tile_id as usize] as u16;
+        entries[i] = tile_id | (palette_entry << 12);
+    }
+
+    gfx.copy_to_map(20, &entries);
+
+    loop {}
+}

agb/src/display/example_logo.rs

@@ -0,0 +1 @@
+include!(concat!(env!("OUT_DIR"), "/test_logo.rs"));