desktop: glow renderer fallback support

Cargo.toml

@@ -112,4 +112,4 @@ jni = "0.21.1"
 android-activity = { version = "0.6.0", features = ["game-activity"] }
 wgpu = "0.19.1"
 winit = { version = "0.29.15", features = ["android-game-activity"] }
-eframe = { version = "0.27.2", features = ["wgpu", "android-game-activity"] }
+eframe = { version = "0.27.2", features = ["wgpu", "glow", "android-game-activity"] }

src/gui/platform/desktop/mod.rs

@@ -27,6 +27,7 @@ use rfd::FileDialog;
 use crate::gui::platform::PlatformCallbacks;
 
 /// Desktop platform related actions.
+#[derive(Clone)]
 pub struct Desktop {
     /// Flag to check if camera stop is needed.
     stop_camera: Arc<AtomicBool>,

src/lib.rs

@@ -15,6 +15,7 @@
 #[macro_use]
 extern crate rust_i18n;
 
+use eframe::NativeOptions;
 use egui::{Context, Stroke};
 
 #[cfg(target_os = "android")]
@@ -68,7 +69,7 @@ fn android_main(app: AndroidApp) {
     let width = app.config().screen_width_dp().unwrap() as f32;
     let height = app.config().screen_height_dp().unwrap() as f32;
     let size = egui::emath::vec2(width, height);
-    let mut options = eframe::NativeOptions {
+    let mut options = NativeOptions {
         viewport: egui::ViewportBuilder::default().with_inner_size(size),
         ..Default::default()
     };
@@ -89,7 +90,7 @@ fn android_main(app: AndroidApp) {
     }));
 
     let app = PlatformApp::new(platform);
-    start(options, app_creator(app));
+    start(options, app_creator(app)).unwrap();
 }
 
 /// Check if system is using dark theme.
@@ -116,9 +117,12 @@ pub fn app_creator<T: 'static>(app: PlatformApp<T>) -> eframe::AppCreator
 }
 
 /// Entry point to start ui with [`eframe`].
-pub fn start(mut options: eframe::NativeOptions, app_creator: eframe::AppCreator) {
-    options.default_theme = eframe::Theme::Light;
-    options.renderer = eframe::Renderer::Wgpu;
+pub fn start(mut options: NativeOptions, app_creator: eframe::AppCreator) -> eframe::Result<()> {
+    options.default_theme = if AppConfig::dark_theme().unwrap_or(false) {
+        eframe::Theme::Dark
+    } else {
+        eframe::Theme::Light
+    };
     // Setup translations.
     setup_i18n();
     // Start integrated node if needed.
@@ -126,7 +130,7 @@ pub fn start(mut options: eframe::NativeOptions, app_creator: eframe::AppCreator
         Node::start();
     }
     // Launch graphical interface.
-    eframe::run_native("Grim", options, app_creator).unwrap();
+    eframe::run_native("Grim", options, app_creator)
 }
 
 /// Setup application [`egui::Style`] and [`egui::Visuals`].

src/main.rs

@@ -69,9 +69,17 @@ fn real_main() {
         viewport = viewport.with_position(pos2(x, y));
     }
 
-    let options = eframe::NativeOptions {
+    let mut options = eframe::NativeOptions {
         viewport,
         ..Default::default()
     };
-    grim::start(options, grim::app_creator(PlatformApp::new(platform)));
+    options.renderer = eframe::Renderer::Wgpu;
+    match grim::start(options.clone(), grim::app_creator(PlatformApp::new(platform.clone()))) {
+        Ok(_) => {}
+        Err(_) => {
+            // Start with Glow renderer on error.
+            options.renderer = eframe::Renderer::Glow;
+            grim::start(options, grim::app_creator(PlatformApp::new(platform))).unwrap();
+        }
+    }
 }