Sorta want this type of API, but, CanvasFrame would be tied to a single type...

src/main.rs

@@ -25,9 +25,10 @@ use crate::util::load_raw;
 use crate::sprite::{Poly, Text, TextHandle, TextVertex, TextInstance};
 use vulkano::instance::debug::DebugCallback;
 use crate::compute::compu_frame::CompuFrame;
-use crate::canvas::canvas_frame::{CanvasFrame, DrawableTestee};
+use crate::canvas::canvas_frame::{CanvasFrame, DrawableTestee, CanvasFrameTest, ImplVertexData};
 use crate::compute::managed::compu_sprite::CompuSprite;
 use std::sync::Arc;
+use crate::canvas::managed::handles::CanvasTextureHandle;
 
 
 pub mod util;
@@ -87,15 +88,7 @@ pub fn main() {
         processor.preload_fonts();
     }
 
-    let mut v = vec![];
 
-    let d = DrawableTestee {
-        vertices: vec![],
-        instances: vec![],
-        handle: Arc::new(Default::default())
-    };
-
-    v.push(d);
 
 
     let q2 = hprof::enter("Game Objects");
@@ -189,6 +182,13 @@ pub fn main() {
             break;
         }
 
+        let dt = DrawableTestee{
+            vertices: vec![ImplVertexData{ x: 0, y: 0 }],
+            handle: Arc::new(Default::default())
+        };
+        let mut cft :CanvasFrameTest<ImplVertexData, CanvasTextureHandle>= CanvasFrameTest{ map: Default::default() };
+        cft.draw(&dt);
+
         let mut compu_frame = CompuFrame::new();
 //        compu_frame.add(compute_buffer.clone(), compute_kernel.clone());
 //        compu_frame.add_with_image_swap(compute_buffer.clone(), compute_kernel.clone(), &compu_sprite1);