1 files changed, 142 insertions, 0 deletions
diff --git a/components/script/dom/webgpu/gpubindgroup.rs b/components/script/dom/webgpu/gpubindgroup.rs
new file mode 100644
index 00000000000..7992e3825d0
--- /dev/null
+++ b/components/script/dom/webgpu/gpubindgroup.rs
@@ -0,0 +1,142 @@
+/* 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 std::borrow::Cow;
+
+use dom_struct::dom_struct;
+use webgpu::wgc::binding_model::BindGroupDescriptor;
+use webgpu::{WebGPU, WebGPUBindGroup, WebGPUDevice, WebGPURequest};
+
+use crate::dom::bindings::cell::DomRefCell;
+use crate::dom::bindings::codegen::Bindings::WebGPUBinding::{
+    GPUBindGroupDescriptor, GPUBindGroupMethods,
+};
+use crate::dom::bindings::reflector::{reflect_dom_object, DomObject, Reflector};
+use crate::dom::bindings::root::{Dom, DomRoot};
+use crate::dom::bindings::str::USVString;
+use crate::dom::globalscope::GlobalScope;
+use crate::dom::gpubindgrouplayout::GPUBindGroupLayout;
+use crate::dom::gpudevice::GPUDevice;
+
+#[dom_struct]
+pub struct GPUBindGroup {
+    reflector_: Reflector,
+    #[ignore_malloc_size_of = "channels are hard"]
+    #[no_trace]
+    channel: WebGPU,
+    label: DomRefCell<USVString>,
+    #[no_trace]
+    bind_group: WebGPUBindGroup,
+    #[no_trace]
+    device: WebGPUDevice,
+    layout: Dom<GPUBindGroupLayout>,
+}
+
+impl GPUBindGroup {
+    fn new_inherited(
+        channel: WebGPU,
+        bind_group: WebGPUBindGroup,
+        device: WebGPUDevice,
+        layout: &GPUBindGroupLayout,
+        label: USVString,
+    ) -> Self {
+        Self {
+            reflector_: Reflector::new(),
+            channel,
+            label: DomRefCell::new(label),
+            bind_group,
+            device,
+            layout: Dom::from_ref(layout),
+        }
+    }
+
+    pub fn new(
+        global: &GlobalScope,
+        channel: WebGPU,
+        bind_group: WebGPUBindGroup,
+        device: WebGPUDevice,
+        layout: &GPUBindGroupLayout,
+        label: USVString,
+    ) -> DomRoot<Self> {
+        reflect_dom_object(
+            Box::new(GPUBindGroup::new_inherited(
+                channel, bind_group, device, layout, label,
+            )),
+            global,
+        )
+    }
+}
+
+impl GPUBindGroup {
+    pub fn id(&self) -> &WebGPUBindGroup {
+        &self.bind_group
+    }
+
+    /// <https://gpuweb.github.io/gpuweb/#dom-gpudevice-createbindgroup>
+    pub fn create(
+        device: &GPUDevice,
+        descriptor: &GPUBindGroupDescriptor,
+    ) -> DomRoot<GPUBindGroup> {
+        let entries = descriptor
+            .entries
+            .iter()
+            .map(|bind| bind.into())
+            .collect::<Vec<_>>();
+
+        let desc = BindGroupDescriptor {
+            label: (&descriptor.parent).into(),
+            layout: descriptor.layout.id().0,
+            entries: Cow::Owned(entries),
+        };
+
+        let bind_group_id = device.global().wgpu_id_hub().create_bind_group_id();
+        device
+            .channel()
+            .0
+            .send(WebGPURequest::CreateBindGroup {
+                device_id: device.id().0,
+                bind_group_id,
+                descriptor: desc,
+            })
+            .expect("Failed to create WebGPU BindGroup");
+
+        let bind_group = WebGPUBindGroup(bind_group_id);
+
+        GPUBindGroup::new(
+            &device.global(),
+            device.channel().clone(),
+            bind_group,
+            device.id(),
+            &descriptor.layout,
+            descriptor.parent.label.clone(),
+        )
+    }
+}
+
+impl Drop for GPUBindGroup {
+    fn drop(&mut self) {
+        if let Err(e) = self
+            .channel
+            .0
+            .send(WebGPURequest::DropBindGroup(self.bind_group.0))
+        {
+            warn!(
+                "Failed to send WebGPURequest::DropBindGroup({:?}) ({})",
+                self.bind_group.0, e
+            );
+        };
+    }
+}
+
+impl GPUBindGroupMethods<crate::DomTypeHolder> for GPUBindGroup {
+    /// <https://gpuweb.github.io/gpuweb/#dom-gpuobjectbase-label>
+    fn Label(&self) -> USVString {
+        self.label.borrow().clone()
+    }
+
+    /// <https://gpuweb.github.io/gpuweb/#dom-gpuobjectbase-label>
+    fn SetLabel(&self, value: USVString) {
+        *self.label.borrow_mut() = value;
+    }
+}