Initial wgpu abstraction

Source/Render/StepMode.rs

@@ -0,0 +1,23 @@
+use serde::{Deserialize, Serialize};
+
+#[repr(C)]
+#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, Serialize, Deserialize)]
+pub enum StepMode {
+    Vertex = 0,
+    Instance = 1,
+}
+
+impl Default for StepMode {
+    fn default() -> Self {
+        StepMode::Vertex
+    }
+}
+
+impl From<StepMode> for wgpu::VertexStepMode {
+    fn from(step_mode: StepMode) -> Self {
+        match step_mode {
+            StepMode::Vertex => wgpu::VertexStepMode::Vertex,
+            StepMode::Instance => wgpu::VertexStepMode::Instance,
+        }
+    }
+}