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

src/canvas/canvas_frame.rs

@@ -6,37 +6,54 @@ use crate::canvas::*;
 use crate::canvas::managed::shader::dynamic_vertex::RuntimeVertexDef;
 use crate::canvas::managed::handles::{CanvasTextureHandle, CanvasImageHandle, CanvasFontHandle, Handle};
 use crate::canvas::managed::shader::text_shader::GlyphInstance;
+use vulkano::pipeline::vertex::Vertex;
 
 // I don't think this is going to work without getting into Box'ing
-pub trait DrawableTest<V, H, In> where H: Handle{
+pub trait DrawableTest<V, H> where H: Handle{
     fn get_vertices(&self) -> Vec<V>;
-    fn get_instances(&self) -> Vec<In>;
     fn get_handle(&self) -> H;
 }
 
 
 pub struct DrawableTestee {
-    pub vertices: Vec<u32>,
-    pub instances: Vec<u32>,
+    pub vertices: Vec<ImplVertexData>,
     pub handle: Arc<CanvasTextureHandle>
 }
 
-impl<V, H: Handle, In> DrawableTest<V, H, In> for DrawableTestee {
+impl<V, H: Handle> DrawableTest<V, H> for DrawableTestee {
     fn get_vertices(&self) -> Vec<V> {
         unimplemented!()
     }
 
-    fn get_instances(&self) -> Vec<In> {
-        unimplemented!()
-    }
-
     fn get_handle(&self) -> H {
         unimplemented!()
     }
 }
 
+pub struct ImplVertexData {
+    pub x: i32,
+    pub y: i32,
+}
+impl VertexData for ImplVertexData {
 
+}
 
+pub trait VertexData : Sized {
+
+}
+
+// CanvasFrameTest will be drawn to by objects implementing DrawableTest
+pub struct CanvasFrameTest<V: VertexData + Sized, H: Handle + Sized> {
+    pub map: HashMap<H, Vec<V>>,
+}
+
+impl<V: VertexData + Sized, H: Handle + Sized + Eq + Hash> CanvasFrameTest<V, H> {
+
+    pub fn draw(&mut self, drawable: &dyn DrawableTest<V, H>) {
+        drawable.get_vertices();
+        self.map.insert(drawable.get_handle(), drawable.get_vertices());
+    }
+}
 
 pub trait Drawable {
 
@@ -62,10 +79,15 @@ pub trait Drawable {
     }
 }
 
+
+
+
 pub trait VertexDefinitionAndData {
 
 }
 
+
+
 pub struct CanvasFrame {
     pub colored_drawables: Vec<RuntimeVertexDef>,
     pub textured_drawables: HashMap<Arc<CanvasTextureHandle>, Vec<Vec<RuntimeVertexDef>>>,
@@ -85,7 +107,6 @@ impl CanvasFrame {
         }
     }
 
-    //
 //    pub fn draw_test<V : VertexDefinitionAndData, H: Handle, In>(&mut self, drawable: &dyn DrawableTest<V, H, In>) {
 //        let h = drawable.get_handle();
 //

src/canvas/canvas_state.rs

@@ -18,7 +18,7 @@ use vulkano::swapchain::Capabilities;
 use winit::Window;
 use vulkano::pipeline::viewport::Viewport;
 use vulkano::descriptor::descriptor::DescriptorDescTy::TexelBuffer;
-use crate::canvas::canvas_frame::CanvasFrame;
+use crate::canvas::canvas_frame::{CanvasFrame, CanvasFrameTest, VertexData};
 use std::hash::Hash;
 use crate::util::vertex_3d::{Vertex3D, TextVertex3D};
 use vulkano::pipeline::depth_stencil::{StencilFaceFlags, DynamicStencilValue};
@@ -35,8 +35,6 @@ use crate::canvas::managed::shader::shader_common::CompiledGraphicsPipeline;
 use crate::canvas::managed::shader::generic_shader::GenericShader;
 
 
-
-
 /// Canvas state is used for storage of texture and image buffers in addition to vertex buffers
 /// Canvas state also contains logic for writing the stored buffers to the command_buffer
 #[derive(Clone)]
@@ -276,7 +274,6 @@ impl CanvasState {
                                    physical: PhysicalDevice,
                                    capabilities: Capabilities) -> Option<Arc<CompiledShaderHandle>>
         where T: CompiledGraphicsPipeline {
-
         let handle = Arc::new(CompiledShaderHandle {
             handle: self.shader_buffers.len() as u32
         });
@@ -314,7 +311,7 @@ impl CanvasState {
             for i in (0..255) {
                 let glyph = font.glyph('d');
 
-                let s = glyph.scaled(Scale{ x: 1.0, y: 1.0 });
+                let s = glyph.scaled(Scale { x: 1.0, y: 1.0 });
 
                 let shape = s.shape().unwrap();
 
@@ -325,7 +322,7 @@ impl CanvasState {
                                 accumulator.push(TextVertex3D {
                                     position: [l.p[0].x as f32, l.p[0].y as f32, 0.0],
                                 });
-                            },
+                            }
                             Segment::Curve(c) => {
                                 accumulator.push(TextVertex3D {
                                     position: [c.p[0].x as f32, c.p[0].y as f32, 0.0],
@@ -421,7 +418,7 @@ impl CanvasState {
             let g = hprof::enter("Textured Vertex Buffer");
             for (k, v) in textured_drawables.drain() {
                 let vertex_buffer = v.clone().get(0).unwrap().clone();
-                    // TODO
+                // TODO
 //                    v.clone().iter()
 //                    .fold(Vec::new(), |mut a: Vec<RuntimeVertexDef>, b| {
 //                        a.extend(b);
@@ -487,6 +484,27 @@ impl CanvasState {
         o
     }
 
+    // This is taking in a canvas frame, which should be some sort of matrix of vertices of generic
+    // types and handles
+    pub fn draw_commands_test<V: 'static + VertexData + Sized + Clone + Send + Sync, H: Handle + Sized>
+                             (&mut self,
+                              mut command_buffer: AutoCommandBufferBuilder,
+                              framebuffers: Vec<Arc<dyn FramebufferAbstract + Send + Sync>>,
+                              image_num: usize,
+                              canvas_frame: CanvasFrameTest<V, H>) -> AutoCommandBufferBuilder {
+
+        let v = Vec::<V>::new();
+
+        let x = ImmutableBuffer::from_iter(
+            v.iter().cloned(),
+            BufferUsage::all(),
+            self.queue.clone(),
+        ).unwrap().0;
+
+        command_buffer
+
+    }
+
     /// Pushes the draw commands to the command buffer. Requires the framebuffers and
     /// image number to be passed in as they are taken care of by the vkprocessor
     pub fn draw_commands(&mut self,

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);

src/vkprocessor.rs

@@ -265,9 +265,9 @@ impl<'a> VkProcessor<'a> {
         drop(g);
 
         {
-            let g = hprof::enter("Canvas creates GPU buffers");
             // take the canvas frame and create the vertex buffers
             // TODO: This performs gpu buffer creation. Shouldn't be in hotpath??
+            let g = hprof::enter("Canvas creates GPU buffers");
             self.canvas_state.draw(canvas_frame);
         }