From 0713ba0213626db37e1733d50e71a228a4f0f48e Mon Sep 17 00:00:00 2001
From: ardocrat <ardocrat@gri.mw>
Date: Mon, 19 Jan 2026 21:21:13 +0100
Subject: [PATCH] gui: wgpu fallback renderer for desktop (#31)

Reviewed-on: https://code.gri.mw/GUI/grim/pulls/31
---
 Cargo.lock  |  2 ++
 Cargo.toml  |  2 +-
 src/main.rs | 21 +++++++++++++++++++--
 3 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 213af8a8..8bf9e3db 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2485,6 +2485,7 @@ dependencies = [
  "objc2-foundation 0.2.2",
  "parking_lot 0.12.5",
  "percent-encoding",
+ "pollster",
  "profiling",
  "raw-window-handle",
  "static_assertions",
@@ -2492,6 +2493,7 @@ dependencies = [
  "wasm-bindgen-futures",
  "web-sys",
  "web-time",
+ "wgpu",
  "windows-sys 0.61.2",
  "winit",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 15cb5999..d210fbbe 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -154,7 +154,7 @@ nokhwa-mac = { git = "https://code.gri.mw/ardocrat/nokhwa", rev = "612c861ef153c
 [target.'cfg(not(target_os = "android"))'.dependencies]
 env_logger = "0.11.3"
 winit = { version = "0.30.12" }
-eframe = { version = "0.33.2", default-features = false, features = ["glow", "wayland"] }
+eframe = { version = "0.33.2", default-features = false, features = ["glow", "wgpu", "wayland"] }
 arboard = "3.2.0"
 rfd = "0.15.0"
 interprocess = { version = "2.2.1", features = ["tokio"] }
diff --git a/src/main.rs b/src/main.rs
index 2fa7eda3..e61d3f1b 100755
--- a/src/main.rs
+++ b/src/main.rs
@@ -134,7 +134,7 @@ fn start_desktop_gui(platform: grim::gui::platform::Desktop) {
         .with_transparent(true)
         .with_decorations(is_mac || is_win);
 
-    let options = eframe::NativeOptions {
+    let mut options = eframe::NativeOptions {
         renderer: eframe::Renderer::Glow,
         viewport,
         ..Default::default()
@@ -142,7 +142,24 @@ fn start_desktop_gui(platform: grim::gui::platform::Desktop) {
 
     // Start GUI.
     let app = grim::gui::App::new(platform.clone());
-    grim::start(options.clone(), grim::app_creator(app)).unwrap();
+    match grim::start(options.clone(), grim::app_creator(app)) {
+        Ok(_) => {}
+        Err(e) => {
+            if is_win {
+                panic!("{}", e);
+            }
+            // Start with another renderer on error.
+            options.renderer = eframe::Renderer::Wgpu;
+
+            let app = grim::gui::App::new(platform);
+            match grim::start(options, grim::app_creator(app)) {
+                Ok(_) => {}
+                Err(e) => {
+                    panic!("{}", e);
+                }
+            }
+        }
+    }
 }
 
 /// Check if application is already running to pass data.