Merge pull request #2038 from hannobraun/render

Try all adapters, if one fails to return a device

crates/fj-viewer/src/graphics/device.rs

@@ -1,13 +1,72 @@
+use tracing::{debug, error};
+
 #[derive(Debug)]
 pub struct Device {
     pub device: wgpu::Device,
     pub queue: wgpu::Queue,
 }
 
 impl Device {
+    pub async fn from_preferred_adapter(
+        instance: &wgpu::Instance,
+        surface: &wgpu::Surface,
+    ) -> Result<(Self, wgpu::Adapter, wgpu::Features), DeviceError> {
+        let adapter = instance
+            .request_adapter(&wgpu::RequestAdapterOptions {
+                power_preference: wgpu::PowerPreference::None,
+                force_fallback_adapter: false,
+                compatible_surface: Some(surface),
+            })
+            .await
+            .ok_or(DeviceError::RequestAdapter)?;
+
+        debug!("Using adapter: {:?}", adapter.get_info());
+
+        let (device, features) = Device::new(&adapter).await?;
+
+        Ok((device, adapter, features))
+    }
+
+    pub async fn try_from_all_adapters(
+        instance: &wgpu::Instance,
+    ) -> Result<(Self, wgpu::Adapter, wgpu::Features), DeviceError> {
+        let mut all_adapters =
+            instance.enumerate_adapters(wgpu::Backends::all());
+
+        let result = loop {
+            let Some(adapter) = all_adapters.next() else {
+                debug!("No more adapters to try");
+                break None;
+            };
+
+            let (device, features) = match Device::new(&adapter).await {
+                Ok((device, adapter)) => (device, adapter),
+                Err(err) => {
+                    error!(
+                        "Failed to get device from adapter {:?}: {:?}",
+                        adapter.get_info(),
+                        err,
+                    );
+                    continue;
+                }
+            };
+
+            break Some((device, adapter, features));
+        };
+
+        for adapter in all_adapters {
+            debug!(
+                "Remaining adapter that wasn't tried: {:?}",
+                adapter.get_info()
+            );
+        }
+
+        result.ok_or(DeviceError::FoundNoWorkingAdapter)
+    }
+
     pub async fn new(
         adapter: &wgpu::Adapter,
-    ) -> Result<(Self, wgpu::Features), wgpu::RequestDeviceError> {
+    ) -> Result<(Self, wgpu::Features), DeviceError> {
         let features = {
             let desired_features = wgpu::Features::POLYGON_MODE_LINE;
             let available_features = adapter.features();
@@ -49,3 +108,19 @@ impl Device {
         Ok((Device { device, queue }, features))
     }
 }
+
+/// Render device initialization error
+#[derive(Debug, thiserror::Error)]
+pub enum DeviceError {
+    /// Failed to request adapter
+    #[error("Failed to request adapter")]
+    RequestAdapter,
+
+    /// Failed to request device
+    #[error("Failed to request device")]
+    RequestDevice(#[from] wgpu::RequestDeviceError),
+
+    /// Found no working adapter to get a device from
+    #[error("Found no working adapter to get a device from")]
+    FoundNoWorkingAdapter,
+}

crates/fj-viewer/src/graphics/mod.rs

@@ -15,6 +15,7 @@ mod uniforms;
 mod vertices;
 
 pub use self::{
+    device::DeviceError,
     draw_config::DrawConfig,
     renderer::{DrawError, Renderer, RendererInitError},
 };

crates/fj-viewer/src/graphics/renderer.rs

@@ -1,7 +1,7 @@
 use std::{io, mem::size_of, vec};
 
 use thiserror::Error;
-use tracing::{debug, trace};
+use tracing::{debug, error, trace};
 use wgpu::util::DeviceExt as _;
 
 use crate::{
@@ -13,7 +13,7 @@ use super::{
     device::Device, draw_config::DrawConfig, drawables::Drawables,
     geometries::Geometries, navigation_cube::NavigationCubeRenderer,
     pipelines::Pipelines, transform::Transform, uniforms::Uniforms,
-    vertices::Vertices, DEPTH_FORMAT, SAMPLE_COUNT,
+    vertices::Vertices, DeviceError, DEPTH_FORMAT, SAMPLE_COUNT,
 };
 
 /// Graphics rendering state and target abstraction
@@ -50,18 +50,28 @@ impl Renderer {
             debug!("Available adapter: {:?}", adapter.get_info());
         }
 
-        let adapter = instance
-            .request_adapter(&wgpu::RequestAdapterOptions {
-                power_preference: wgpu::PowerPreference::None,
-                force_fallback_adapter: false,
-                compatible_surface: Some(&surface),
-            })
-            .await
-            .ok_or(RendererInitError::RequestAdapter)?;
-
-        debug!("Using adapter: {:?}", adapter.get_info());
-
-        let (device, features) = Device::new(&adapter).await?;
+        let result = Device::from_preferred_adapter(&instance, &surface).await;
+        let (device, adapter, features) = match result {
+            Ok((device, adapter, features)) => (device, adapter, features),
+            Err(_) => {
+                error!("Failed to acquire device from preferred adapter");
+
+                match Device::try_from_all_adapters(&instance).await {
+                    Ok((device, adapter, features)) => {
+                        (device, adapter, features)
+                    }
+                    Err(err) => {
+                        error!("Prepend `RUST_LOG=fj_viewer=debug` and re-run");
+                        error!("Then open an issue and post your output");
+                        error!(
+                            "https://github.com/hannobraun/fornjot/issues/new"
+                        );
+
+                        return Err(err.into());
+                    }
+                }
+            }
+        };
 
         let color_format = 'color_format: {
             let capabilities = surface.get_capabilities(&adapter);
@@ -374,15 +384,9 @@ pub enum RendererInitError {
     #[error("Error creating surface")]
     CreateSurface(#[from] wgpu::CreateSurfaceError),
 
-    /// Graphics accelerator acquisition error
-    #[error("Error request adapter")]
-    RequestAdapter,
-
-    /// Device request errors
-    ///
-    /// See: [wgpu::RequestDeviceError](https://docs.rs/wgpu/latest/wgpu/struct.RequestDeviceError.html)
-    #[error("Error requesting device")]
-    RequestDevice(#[from] wgpu::RequestDeviceError),
+    /// Device error
+    #[error(transparent)]
+    Device(#[from] DeviceError),
 }
 
 /// Draw error

crates/fj-viewer/src/lib.rs

@@ -18,7 +18,7 @@ mod screen;
 mod viewer;
 
 pub use self::{
-    graphics::RendererInitError,
+    graphics::{DeviceError, RendererInitError},
     input::InputEvent,
     screen::{NormalizedScreenPosition, Screen, ScreenSize},
     viewer::Viewer,