Going to just normalize to a single hardcoded enum of vertex definitions. Seems like quite a backpeddle....

src/sprite.rs

@@ -1,13 +1,18 @@
 use std::sync::Arc;
 use crate::util::vertex_3d::Vertex3D;
 use crate::canvas::*;
-use crate::canvas::managed::handles::{CanvasFontHandle, CanvasImageHandle, CanvasTextureHandle};
+use crate::canvas::managed::handles::{CanvasFontHandle, CanvasImageHandle, CanvasTextureHandle, Handle};
 use crate::canvas::managed::shader::text_shader::GlyphInstance;
 use crate::canvas::canvas_frame::{DrawableTest, Drawable};
+use crate::{VertexTypes, ImplVertexData1};
+use crate::canvas::canvas_frame::dynhash::DynHash;
 
 ///
 #[derive(Debug, Clone)]
 pub struct Sprite {
+
+    pub verts: VertexTypes::TexturedType(vec![]),
+
     pub vertices: [(f32, f32, f32); 6],
     pub ti_position: [(f32, f32); 6],
 
@@ -98,6 +103,18 @@ impl Sprite {
         }
     }
 }
+
+impl<V: Into<VertexTypes>, H: Handle + DynHash> DrawableTest<V, H> for Sprite{
+
+    fn get_vertices(&self) -> V {
+        VertexTypes::TexturedType(vec![ImplVertexData1{ x: 0, y: 0 }])
+    }
+
+    fn get_handle(&self) -> H {
+        self.texture_handle.unwrap()
+    }
+}
+
 impl Drawable for Sprite {
     fn get_vertices(&self) -> Vec<(f32, f32, f32)> {
         self.vertices.to_vec()