Switch sandbox renderer to wgpu

apps/sandbox/Cargo.toml

@@ -6,4 +6,4 @@ license = "AGPL-3.0-or-later"
 
 [dependencies]
 canary = { path = "../.." }
-eframe = "0.19"
+eframe = { version = "0.19", features = ["wgpu"] }

apps/sandbox/src/main.rs

@@ -13,6 +13,7 @@ fn main() {
         .to_owned();
 
     let native_options = eframe::NativeOptions {
+        renderer: eframe::Renderer::Wgpu,
         ..Default::default()
     };