1 files changed, 44 insertions, 0 deletions
diff --git a/dom/webgpu/CommandBuffer.cpp b/dom/webgpu/CommandBuffer.cpp
new file mode 100644
index 0000000000..ff9bbd8d5d
--- /dev/null
+++ b/dom/webgpu/CommandBuffer.cpp
@@ -0,0 +1,44 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/dom/WebGPUBinding.h"
+#include "CommandBuffer.h"
+#include "CommandEncoder.h"
+#include "ipc/WebGPUChild.h"
+
+#include "mozilla/webgpu/CanvasContext.h"
+#include "Device.h"
+
+namespace mozilla::webgpu {
+
+GPU_IMPL_CYCLE_COLLECTION(CommandBuffer, mParent)
+GPU_IMPL_JS_WRAP(CommandBuffer)
+
+CommandBuffer::CommandBuffer(Device* const aParent, RawId aId,
+                             nsTArray<WeakPtr<CanvasContext>>&& aTargetContexts,
+                             RefPtr<CommandEncoder>&& aEncoder)
+    : ChildOf(aParent), mId(aId), mTargetContexts(std::move(aTargetContexts)) {
+  mEncoder = std::move(aEncoder);
+  MOZ_RELEASE_ASSERT(aId);
+}
+
+CommandBuffer::~CommandBuffer() {}
+
+void CommandBuffer::Cleanup() { mEncoder = nullptr; }
+
+Maybe<RawId> CommandBuffer::Commit() {
+  if (!mValid) {
+    return Nothing();
+  }
+  mValid = false;
+  for (const auto& targetContext : mTargetContexts) {
+    if (targetContext) {
+      targetContext->MaybeQueueSwapChainPresent();
+    }
+  }
+  return Some(mId);
+}
+
+}  // namespace mozilla::webgpu