don't try to draw empty meshes

Author: edwloef

wgpu/src/lib.rs

@@ -557,8 +557,10 @@ impl core::svg::Renderer for Renderer {
 
 impl graphics::mesh::Renderer for Renderer {
     fn draw_mesh(&mut self, mesh: graphics::Mesh) {
-        let (layer, transformation) = self.layers.current_mut();
-        layer.draw_mesh(mesh, transformation);
+        if !mesh.indices().is_empty() {
+            let (layer, transformation) = self.layers.current_mut();
+            layer.draw_mesh(mesh, transformation);
+        }
     }
 }