Make basic text shaping the default shaping strategy

graphics/src/primitive.rs

@@ -26,6 +26,15 @@ pub enum Primitive {
         horizontal_alignment: alignment::Horizontal,
         /// The vertical alignment of the text
         vertical_alignment: alignment::Vertical,
+        /// Whether the text needs advanced shaping and font fallback.
+        ///
+        /// You will need to enable this flag if the text contains a complex
+        /// script, the font used needs it, and/or multiple fonts in your system
+        /// may be needed to display all of the glyphs.
+        ///
+        /// Advanced shaping is expensive! You should only enable it when
+        /// necessary.
+        advanced_shape: bool,
     },
     /// A quad primitive
     Quad {