Fix infinite viewport

Author: dylanowen

crates/bevy_editor_pls_core/src/editor.rs

@@ -46,7 +46,7 @@ impl Editor {
             pointer_used: false,
             active_editor_interaction: None,
             listening_for_text: false,
-            viewport: egui::Rect::NOTHING,
+            viewport: egui::Rect::from_min_size(egui::Pos2::ZERO, egui::Vec2::new(640., 480.)),
 
             windows: IndexMap::default(),
             window_states: HashMap::default(),

crates/bevy_editor_pls_default_windows/src/cameras/mod.rs

@@ -581,11 +581,13 @@ fn set_main_pass_viewport(
     let viewport = editor.active().then(|| {
         let scale_factor = window.scale_factor() * egui_settings.scale_factor;
 
-        let viewport_pos = editor.viewport().left_top().to_vec2() * scale_factor;
-        let viewport_size = editor.viewport().size() * scale_factor;
+        let mut viewport_pos = editor.viewport().left_top().to_vec2() * scale_factor;
+        let mut viewport_size = editor.viewport().size() * scale_factor;
 
         if !viewport_size.is_finite() {
             warn!("editor viewport size is infinite");
+            viewport_pos = egui::Vec2::ZERO;
+            viewport_size = egui::Vec2::new(640., 480.);
         }
 
         bevy::render::camera::Viewport {