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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "CanvasManagerParent.h"
#include "mozilla/dom/WebGLParent.h"
#include "mozilla/gfx/CanvasRenderThread.h"
#include "mozilla/gfx/gfxVars.h"
#include "mozilla/ipc/Endpoint.h"
#include "mozilla/layers/CompositorThread.h"
#include "mozilla/StaticPrefs_webgl.h"
#include "mozilla/webgpu/WebGPUParent.h"
#include "mozilla/webrender/RenderThread.h"
#include "nsIThread.h"
#include "nsThreadUtils.h"
namespace mozilla::gfx {
CanvasManagerParent::ManagerSet CanvasManagerParent::sManagers;
/* static */ void CanvasManagerParent::Init(
Endpoint<PCanvasManagerParent>&& aEndpoint) {
MOZ_ASSERT(layers::CompositorThreadHolder::IsInCompositorThread());
auto manager = MakeRefPtr<CanvasManagerParent>();
if (!gfxVars::SupportsThreadsafeGL()) {
nsCOMPtr<nsIThread> owningThread;
owningThread = wr::RenderThread::GetRenderThread();
MOZ_ASSERT(owningThread);
owningThread->Dispatch(NewRunnableMethod<Endpoint<PCanvasManagerParent>&&>(
"CanvasManagerParent::Bind", manager, &CanvasManagerParent::Bind,
std::move(aEndpoint)));
} else if (gfxVars::UseCanvasRenderThread()) {
nsCOMPtr<nsIThread> owningThread;
owningThread = gfx::CanvasRenderThread::GetCanvasRenderThread();
MOZ_ASSERT(owningThread);
owningThread->Dispatch(NewRunnableMethod<Endpoint<PCanvasManagerParent>&&>(
"CanvasManagerParent::Bind", manager, &CanvasManagerParent::Bind,
std::move(aEndpoint)));
} else {
manager->Bind(std::move(aEndpoint));
}
}
/* static */ void CanvasManagerParent::Shutdown() {
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsISerialEventTarget> owningThread;
if (!gfxVars::SupportsThreadsafeGL()) {
owningThread = wr::RenderThread::GetRenderThread();
} else if (gfxVars::UseCanvasRenderThread()) {
owningThread = gfx::CanvasRenderThread::GetCanvasRenderThread();
} else {
owningThread = layers::CompositorThread();
}
if (!owningThread) {
return;
}
NS_DispatchAndSpinEventLoopUntilComplete(
"CanvasManagerParent::Shutdown"_ns, owningThread,
NS_NewRunnableFunction("CanvasManagerParent::Shutdown", []() -> void {
CanvasManagerParent::ShutdownInternal();
}));
}
/* static */ void CanvasManagerParent::ShutdownInternal() {
nsTArray<RefPtr<CanvasManagerParent>> actors(sManagers.Count());
// Do a copy since Close will remove the entry from the set.
for (const auto& actor : sManagers) {
actors.AppendElement(actor);
}
for (auto const& actor : actors) {
actor->Close();
}
}
CanvasManagerParent::CanvasManagerParent() = default;
CanvasManagerParent::~CanvasManagerParent() = default;
void CanvasManagerParent::Bind(Endpoint<PCanvasManagerParent>&& aEndpoint) {
if (!aEndpoint.Bind(this)) {
NS_WARNING("Failed to bind CanvasManagerParent!");
return;
}
sManagers.Insert(this);
}
void CanvasManagerParent::ActorDestroy(ActorDestroyReason aWhy) {
sManagers.Remove(this);
}
already_AddRefed<dom::PWebGLParent> CanvasManagerParent::AllocPWebGLParent() {
if (NS_WARN_IF(!gfxVars::AllowWebglOop() &&
!StaticPrefs::webgl_out_of_process_force())) {
MOZ_ASSERT_UNREACHABLE("AllocPWebGLParent without remote WebGL");
return nullptr;
}
return MakeAndAddRef<dom::WebGLParent>();
}
already_AddRefed<webgpu::PWebGPUParent>
CanvasManagerParent::AllocPWebGPUParent() {
if (NS_WARN_IF(!gfxVars::AllowWebGPU())) {
MOZ_ASSERT_UNREACHABLE("AllocPWebGPUParent without WebGPU");
return nullptr;
}
return MakeAndAddRef<webgpu::WebGPUParent>();
}
mozilla::ipc::IPCResult CanvasManagerParent::RecvInitialize(
const uint32_t& aId) {
if (!aId) {
return IPC_FAIL(this, "invalid id");
}
if (mId) {
return IPC_FAIL(this, "already initialized");
}
mId = aId;
return IPC_OK();
}
mozilla::ipc::IPCResult CanvasManagerParent::RecvGetSnapshot(
const uint32_t& aManagerId, const int32_t& aProtocolId,
const Maybe<RemoteTextureOwnerId>& aOwnerId,
webgl::FrontBufferSnapshotIpc* aResult) {
if (!aManagerId) {
return IPC_FAIL(this, "invalid id");
}
IProtocol* actor = nullptr;
for (CanvasManagerParent* i : sManagers) {
if (i->OtherPidMaybeInvalid() == OtherPidMaybeInvalid() &&
i->mId == aManagerId) {
actor = i->Lookup(aProtocolId);
break;
}
}
if (!actor) {
return IPC_FAIL(this, "invalid actor");
}
if (actor->GetSide() != mozilla::ipc::Side::ParentSide) {
return IPC_FAIL(this, "unsupported actor");
}
webgl::FrontBufferSnapshotIpc buffer;
switch (actor->GetProtocolId()) {
case ProtocolId::PWebGLMsgStart: {
RefPtr<dom::WebGLParent> webgl = static_cast<dom::WebGLParent*>(actor);
mozilla::ipc::IPCResult rv = webgl->GetFrontBufferSnapshot(&buffer, this);
if (!rv) {
return rv;
}
} break;
case ProtocolId::PWebGPUMsgStart: {
RefPtr<webgpu::WebGPUParent> webgpu =
static_cast<webgpu::WebGPUParent*>(actor);
IntSize size;
if (aOwnerId.isNothing()) {
return IPC_FAIL(this, "invalid OwnerId");
}
mozilla::ipc::IPCResult rv =
webgpu->GetFrontBufferSnapshot(this, *aOwnerId, buffer.shmem, size);
if (!rv) {
return rv;
}
buffer.surfSize.x = static_cast<uint32_t>(size.width);
buffer.surfSize.y = static_cast<uint32_t>(size.height);
} break;
default:
return IPC_FAIL(this, "unsupported protocol");
}
*aResult = std::move(buffer);
return IPC_OK();
}
} // namespace mozilla::gfx
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