Update to wgpu 25 (#6744)

Co-authored-by: Andreas Reich <r_andreas2@web.de>

crates/egui_kittest/Cargo.toml

@@ -52,7 +52,12 @@ egui-wgpu = { workspace = true, optional = true }
 pollster = { workspace = true, optional = true }
 image = { workspace = true, optional = true }
 # Enable DX12 because it always comes with a software rasterizer.
-wgpu = { workspace = true, features = ["metal", "dx12"], optional = true }
+wgpu = { workspace = true, features = [
+    "metal",
+    "dx12",
+    "vulkan",
+    "gles",
+], optional = true }
 
 # snapshot dependencies
 dify = { workspace = true, optional = true }

crates/egui_kittest/src/texture_to_image.rs

@@ -47,7 +47,9 @@ pub(crate) fn texture_to_image(device: &Device, queue: &Queue, texture: &Texture
     buffer_slice.map_async(wgpu::MapMode::Read, move |v| drop(sender.send(v)));
 
     // Poll the device in a blocking manner so that our future resolves.
-    device.poll(wgpu::Maintain::WaitForSubmissionIndex(submission_index));
+    device
+        .poll(wgpu::PollType::WaitForSubmissionIndex(submission_index))
+        .expect("Failed to poll device");
 
     receiver.recv().unwrap().unwrap();
     let buffer_slice = output_buffer.slice(..);

crates/egui_kittest/src/wgpu.rs

@@ -28,7 +28,7 @@ pub fn default_wgpu_setup() -> egui_wgpu::WgpuSetup {
             wgpu::Backend::Dx12 => 2,
             wgpu::Backend::Gl => 4,
             wgpu::Backend::BrowserWebGpu => 6,
-            wgpu::Backend::Empty => 7,
+            wgpu::Backend::Noop => 7,
         });
 
         // Prefer CPU adapters, otherwise if we can't, prefer discrete GPU over integrated GPU.
@@ -202,7 +202,10 @@ impl crate::TestRenderer for WgpuTestRenderer {
             .queue
             .submit(user_buffers.into_iter().chain(once(encoder.finish())));
 
-        self.render_state.device.poll(wgpu::Maintain::Wait);
+        self.render_state
+            .device
+            .poll(wgpu::PollType::Wait)
+            .map_err(|e| format!("{e}"))?;
 
         Ok(texture_to_image(
             &self.render_state.device,