Enable gui renderer for all bit depths we support currently.

svn-id: r34865

graphics/VectorRenderer.h

@@ -34,6 +34,12 @@
 
 #include "gui/ThemeEngine.h"
 
+// To assure we have VECTOR_RENDERER_FORMAT specified when
+// DISABLE_FANCY_THEMES is defined, we error out elsewise
+#if defined(DISABLE_FANCY_THEMES) && !defined(VECTOR_RENDERER_FORMAT)
+#error "You need to specify a fixed overlay format via VECTOR_RENDERER_FORMAT"
+#endif
+
 namespace Graphics {
 class VectorRenderer;
 
@@ -84,6 +90,14 @@ VectorRenderer *createRenderer(int mode);
  * the actual rendering functionality for each Byte Depth / Byte Format
  * combination, and may also contain platform specific code.
  *
+ * When specifing define DISABLE_FANCY_THEMES some eye candy related code
+ * gets stripped of. This is especially useful for small devices like NDS.
+ * Also note that if you specify DISABLE_FANCY_THEMES, you'll need to 
+ * specify a forced overlay bit format via VECTOR_RENDERER_FORMAT define.
+ * The value looks like 'XYZ' for RXGYBZ mode, so R5G5B5 would be specified
+ * via:
+ * #define VECTOR_RENDERER_FORMAT 565
+ *
  * TODO: Expand documentation.
  *
  * @see VectorRendererSpec