Simplify ResourceMaps (#4880)

* Remove the abstractions in resource maps

ResourceMaps had a rather convoluted system for erasing types that isn't needed anywhere except in one place in the triage_resource function. Everywhere else we are always dealing with specific types so using a member of the resource maps is simpler than going through an abstraction. More importantly there was a constraint that all contents of the resource maps implement the Resource trait which got in the way of some of the ongoing buffer snatching changes.

This commit simplifies this by removing the abstraction. Each resource type has its hash map directly in ResourceMaps and it is easier to have different requirements and behaviors depending on the type of the each resource.

wgpu-core/src/device/global.rs

@@ -521,6 +521,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                 device
                     .lock_life()
                     .suspected_resources
+                    .buffers
                     .insert(buffer_id, buffer);
             }
 
@@ -784,6 +785,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                     device
                         .lock_life()
                         .suspected_resources
+                        .textures
                         .insert(texture_id, texture.clone());
                 }
             }
@@ -861,6 +863,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
             view.device
                 .lock_life()
                 .suspected_resources
+                .texture_views
                 .insert(texture_view_id, view.clone());
 
             if wait {
@@ -931,6 +934,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                 .device
                 .lock_life()
                 .suspected_resources
+                .samplers
                 .insert(sampler_id, sampler.clone());
         }
     }
@@ -1017,6 +1021,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                 .device
                 .lock_life()
                 .suspected_resources
+                .bind_group_layouts
                 .insert(bind_group_layout_id, layout.clone());
         }
     }
@@ -1080,6 +1085,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                 .device
                 .lock_life()
                 .suspected_resources
+                .pipeline_layouts
                 .insert(pipeline_layout_id, layout.clone());
         }
     }
@@ -1154,6 +1160,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                 .device
                 .lock_life()
                 .suspected_resources
+                .bind_groups
                 .insert(bind_group_id, bind_group.clone());
         }
     }
@@ -1448,6 +1455,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
                 .device
                 .lock_life()
                 .suspected_resources
+                .render_bundles
                 .insert(render_bundle_id, bundle.clone());
         }
     }
@@ -1517,6 +1525,7 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
             device
                 .lock_life()
                 .suspected_resources
+                .query_sets
                 .insert(query_set_id, query_set.clone());
         }
     }
@@ -1653,10 +1662,12 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
             let mut life_lock = device.lock_life();
             life_lock
                 .suspected_resources
+                .render_pipelines
                 .insert(render_pipeline_id, pipeline.clone());
 
             life_lock
                 .suspected_resources
+                .pipeline_layouts
                 .insert(layout_id, pipeline.layout.clone());
         }
     }
@@ -1788,9 +1799,11 @@ impl<G: GlobalIdentityHandlerFactory> Global<G> {
             let mut life_lock = device.lock_life();
             life_lock
                 .suspected_resources
+                .compute_pipelines
                 .insert(compute_pipeline_id, pipeline.clone());
             life_lock
                 .suspected_resources
+                .pipeline_layouts
                 .insert(layout_id, pipeline.layout.clone());
         }
     }