[PICA] More textoor

include/colour.hpp

@@ -0,0 +1,13 @@
+#pragma once
+#include "helpers.hpp"
+
+// Helpers functions for converting colour channels between bit depths
+namespace Colour {
+    inline static u8 convert4To8Bit(u8 c) {
+        return (c << 4) | c;
+    }
+
+    inline static u8 convert5To8Bit(u8 c) {
+        return (c << 3) | (c >> 2);
+    }
+}