moved over to the enum method of drawing. Not flexible, but type safe

notes/VKProcessor/DynamicVertex.txt

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+Content-Type: text/x-zim-wiki
+Wiki-Format: zim 0.4
+Creation-Date: 2020-02-04T23:22:14-08:00
+
+====== DynamicVertex ======
+
+[[/doc/sfml_rust/canvas/managed/shader/dynamic_vertex/index.html|Documentation]]
+
+[[https://vulkan-tutorial.com/Vertex_buffers/Vertex_input_description|Vulkan C++ binding equivilent]]
+
+===== Details =====
+
+So, the **pipeline** we create over in the **shader** needs to know about the vertex data it will be using. This lines up pretty well because the Shader is precisely the mechanism which would know about this data.
+
+
+--------------------
+
+===== Data =====
+
+**Borrowed:**
+
+**Owns:**
+
+--------------------
+
+
+{{{code: lang="rust" linenumbers="True"
+#[derive(Default, Debug, Clone)]
+pub struct RuntimeVertexDef {
+	buffers: Vec<(u32, usize, InputRate)>, // (attribute id, stride, Vertex or Instance data)
+	vertex_buffer_ids: Vec<(usize, usize)>,//
+	attributes: Vec<(String, u32, AttributeInfo)>,
+	num_vertices: u32,
+}
+
+impl RuntimeVertexDef {
+
+	/// primitive is an input value or struct which can then describe
+	/// these damn values that are required for inputting them into vulkan
+	pub fn from_primitive(primitive: u32) -> RuntimeVertexDef {
+	}
+
+	/// Returns the indices of the buffers to bind as vertex buffers and the byte offset, when
+	/// drawing the primitive.
+	pub fn vertex_buffer_ids(&self) -> &[(usize, usize)] {
+		&self.vertex_buffer_ids
+	}
+}
+
+unsafe impl<I> VertexDefinition<I> for RuntimeVertexDef
+	where I: ShaderInterfaceDef
+
+	/// Iterator that returns the offset, the stride (in bytes) and input rate of each buffer.
+	type BuffersIter = VecIntoIter<(u32, usize, InputRate)>;
+	/// Iterator that returns the attribute location, buffer id, and infos.
+	type AttribsIter = VecIntoIter<(u32, u32, AttributeInfo)>;
+
+	 fn definition(&self, interface: &I) -> 
+		<(Self::BuffersIter, Self::AttribsIter), IncompatibleVertexDefinitionError>{
+		
+		let buffers = vec![
+			(0, mem::size_of::<T>(), InputRate::Vertex),
+			(1, mem::size_of::<U>(), InputRate::Instance),
+		]_iter();
+		
+	}
+}
+
+
+unsafe impl VertexSource<Vec<Arc<dyn BufferAccess + Send + Sync>>> for RuntimeVertexDef {
+	fn decode(&self, bufs: Vec<Arc<dyn BufferAccess + Send + Sync>>)
+			  -> (Vec<Box<dyn BufferAccess + Send + Sync>>, usize, usize)
+	{
+		(
+			bufs.into_iter().map(|b| Box::new(b) as Box<_>).collect(),    // Box up the buffers
+			self.num_vertices as usize,                                                         // Number of vertices
+			1                                                                                   // Number of instances
+		)
+	}
+}
+
+
+}}}
+
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