dom/webgpu/CommandBuffer.cpp

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "mozilla/dom/WebGPUBinding.h"
   7 #include "CommandBuffer.h"
   8 #include "CommandEncoder.h"
   9 #include "ipc/WebGPUChild.h"
  10
  11 #include "mozilla/webgpu/CanvasContext.h"
  12 #include "Device.h"
  13
  14 namespace mozilla::webgpu {
  15
  16 GPU_IMPL_CYCLE_COLLECTION(CommandBuffer, mParent)
  17 GPU_IMPL_JS_WRAP(CommandBuffer)
  18
  19 CommandBuffer::CommandBuffer(Device* const aParent, RawId aId,
  20                              nsTArray<WeakPtr<CanvasContext>>&& aTargetContexts,
  21                              RefPtr<CommandEncoder>&& aEncoder)
  22     : ChildOf(aParent), mId(aId), mTargetContexts(std::move(aTargetContexts)) {
  23   mEncoder = std::move(aEncoder);
  24   MOZ_RELEASE_ASSERT(aId);
  25 }
  26
  27 CommandBuffer::~CommandBuffer() {}
  28
  29 void CommandBuffer::Cleanup() { mEncoder = nullptr; }
  30
  31 Maybe<RawId> CommandBuffer::Commit() {
  32   if (!mValid) {
  33     return Nothing();
  34   }
  35   mValid = false;
  36   for (const auto& targetContext : mTargetContexts) {
  37     if (targetContext) {
  38       targetContext->MaybeQueueSwapChainPresent();
  39     }
  40   }
  41   return Some(mId);
  42 }
  43
  44 }  // namespace mozilla::webgpu