webgpu: Add a `webgpu_traits` crate (#36320)

This breaks the `script_traits` dependency  on `webgpu`. In general, the
`traits` crates shouldn't depend on Servo non-`traits` crates. This is
necessary to move "script to constellation" messages to the
`constellation_traits` crate, making it the entire API for talking to
the
constellation. This will break a circular dependency when that happens.

Testing: Successfully building is enough of a test for this one as
it is mainly moving types around.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>

Signed-off-by: Martin Robinson <mrobinson@igalia.com>

1 files changed, 53 insertions, 0 deletions

diff --git a/components/shared/webgpu/ids.rs b/components/shared/webgpu/ids.rs
new file mode 100644
index 00000000000..28f2d1c24af
--- /dev/null
+++ b/components/shared/webgpu/ids.rs
@@ -0,0 +1,53 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+use malloc_size_of::{MallocSizeOf, MallocSizeOfOps};
+use serde::{Deserialize, Serialize};
+pub use wgpu_core::id::markers::{
+    ComputePassEncoder as ComputePass, RenderPassEncoder as RenderPass,
+};
+use wgpu_core::id::{
+    AdapterId, BindGroupId, BindGroupLayoutId, BufferId, CommandBufferId, CommandEncoderId,
+    ComputePipelineId, DeviceId, PipelineLayoutId, QueueId, RenderBundleId, RenderPipelineId,
+    SamplerId, ShaderModuleId, SurfaceId, TextureId, TextureViewId,
+};
+pub use wgpu_core::id::{
+    ComputePassEncoderId as ComputePassId, RenderPassEncoderId as RenderPassId,
+};
+
+macro_rules! webgpu_resource {
+    ($name:ident, $id:ty) => {
+        #[derive(Clone, Copy, Debug, Deserialize, Hash, PartialEq, PartialOrd, Serialize)]
+        pub struct $name(pub $id);
+
+        impl MallocSizeOf for $name {
+            fn size_of(&self, _ops: &mut MallocSizeOfOps) -> usize {
+                0
+            }
+        }
+
+        impl Eq for $name {}
+    };
+}
+
+webgpu_resource!(WebGPUAdapter, AdapterId);
+webgpu_resource!(WebGPUBindGroup, BindGroupId);
+webgpu_resource!(WebGPUBindGroupLayout, BindGroupLayoutId);
+webgpu_resource!(WebGPUBuffer, BufferId);
+webgpu_resource!(WebGPUCommandBuffer, CommandBufferId);
+webgpu_resource!(WebGPUCommandEncoder, CommandEncoderId);
+webgpu_resource!(WebGPUComputePipeline, ComputePipelineId);
+webgpu_resource!(WebGPUDevice, DeviceId);
+webgpu_resource!(WebGPUPipelineLayout, PipelineLayoutId);
+webgpu_resource!(WebGPUQueue, QueueId);
+webgpu_resource!(WebGPURenderBundle, RenderBundleId);
+webgpu_resource!(WebGPURenderPipeline, RenderPipelineId);
+webgpu_resource!(WebGPUSampler, SamplerId);
+webgpu_resource!(WebGPUShaderModule, ShaderModuleId);
+webgpu_resource!(WebGPUSurface, SurfaceId);
+webgpu_resource!(WebGPUTexture, TextureId);
+webgpu_resource!(WebGPUTextureView, TextureViewId);
+webgpu_resource!(WebGPUComputePass, ComputePassId);
+webgpu_resource!(WebGPURenderPass, RenderPassId);
+webgpu_resource!(WebGPUContextId, u64);