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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /gfx/layers/ipc/KnowsCompositor.h
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/layers/ipc/KnowsCompositor.h')
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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/. */
+
+#ifndef MOZILLA_LAYERS_KNOWSCOMPOSITOR
+#define MOZILLA_LAYERS_KNOWSCOMPOSITOR
+
+#include "mozilla/layers/LayersTypes.h" // for LayersBackend
+#include "mozilla/layers/CompositorTypes.h"
+#include "nsExpirationTracker.h"
+#include "mozilla/DataMutex.h"
+#include "mozilla/layers/SyncObject.h"
+
+namespace mozilla {
+namespace layers {
+
+class TextureForwarder;
+class LayersIPCActor;
+class ImageBridgeChild;
+
+/**
+ * See ActiveResourceTracker below.
+ */
+class ActiveResource {
+ public:
+ virtual void NotifyInactive() = 0;
+ nsExpirationState* GetExpirationState() { return &mExpirationState; }
+ bool IsActivityTracked() { return mExpirationState.IsTracked(); }
+
+ private:
+ nsExpirationState mExpirationState;
+};
+
+/**
+ * A convenience class on top of nsExpirationTracker
+ */
+class ActiveResourceTracker : public nsExpirationTracker<ActiveResource, 3> {
+ public:
+ ActiveResourceTracker(uint32_t aExpirationCycle, const char* aName,
+ nsIEventTarget* aEventTarget)
+ : nsExpirationTracker(aExpirationCycle, aName, aEventTarget) {}
+
+ void NotifyExpired(ActiveResource* aResource) override {
+ RemoveObject(aResource);
+ aResource->NotifyInactive();
+ }
+};
+
+/**
+ * An abstract interface for classes that are tied to a specific Compositor
+ * across IPDL and uses TextureFactoryIdentifier to describe this Compositor.
+ */
+class KnowsCompositor {
+ public:
+ NS_INLINE_DECL_PURE_VIRTUAL_REFCOUNTING
+
+ KnowsCompositor();
+ virtual ~KnowsCompositor();
+
+ void IdentifyTextureHost(const TextureFactoryIdentifier& aIdentifier);
+
+ // The sync object for the global content device.
+ RefPtr<SyncObjectClient> GetSyncObject() {
+ auto lock = mData.Lock();
+ if (lock.ref().mSyncObject) {
+ lock.ref().mSyncObject->EnsureInitialized();
+ }
+ return lock.ref().mSyncObject;
+ }
+
+ /// And by "thread-safe" here we merely mean "okay to hold strong references
+ /// to from multiple threads". Not all methods actually are thread-safe.
+ virtual bool IsThreadSafe() const { return true; }
+
+ virtual RefPtr<KnowsCompositor> GetForMedia() {
+ return RefPtr<KnowsCompositor>(this);
+ }
+
+ int32_t GetMaxTextureSize() const {
+ auto lock = mData.Lock();
+ return lock.ref().mTextureFactoryIdentifier.mMaxTextureSize;
+ }
+
+ /**
+ * Returns the type of backend that is used off the main thread.
+ * We only don't allow changing the backend type at runtime so this value can
+ * be queried once and will not change until Gecko is restarted.
+ */
+ LayersBackend GetCompositorBackendType() const {
+ auto lock = mData.Lock();
+ return lock.ref().mTextureFactoryIdentifier.mParentBackend;
+ }
+
+ WebRenderCompositor GetWebRenderCompositorType() const {
+ auto lock = mData.Lock();
+ return lock.ref().mTextureFactoryIdentifier.mWebRenderCompositor;
+ }
+
+ bool SupportsTextureBlitting() const {
+ auto lock = mData.Lock();
+ return lock.ref().mTextureFactoryIdentifier.mSupportsTextureBlitting;
+ }
+
+ bool SupportsPartialUploads() const {
+ auto lock = mData.Lock();
+ return lock.ref().mTextureFactoryIdentifier.mSupportsPartialUploads;
+ }
+
+ bool SupportsComponentAlpha() const {
+ auto lock = mData.Lock();
+ return lock.ref().mTextureFactoryIdentifier.mSupportsComponentAlpha;
+ }
+
+ bool SupportsD3D11NV12() const {
+ auto lock = mData.Lock();
+ return lock.ref().mTextureFactoryIdentifier.mSupportsD3D11NV12;
+ }
+
+ bool SupportsD3D11() const {
+ auto lock = mData.Lock();
+ return lock.ref().mTextureFactoryIdentifier.mParentBackend ==
+ layers::LayersBackend::LAYERS_WR &&
+ (lock.ref().mTextureFactoryIdentifier.mCompositorUseANGLE ||
+ lock.ref().mTextureFactoryIdentifier.mWebRenderCompositor ==
+ layers::WebRenderCompositor::D3D11);
+ }
+
+ bool GetCompositorUseANGLE() const {
+ auto lock = mData.Lock();
+ return lock.ref().mTextureFactoryIdentifier.mCompositorUseANGLE;
+ }
+
+ bool GetCompositorUseDComp() const {
+ auto lock = mData.Lock();
+ return lock.ref().mTextureFactoryIdentifier.mCompositorUseDComp;
+ }
+
+ bool GetUseCompositorWnd() const {
+ auto lock = mData.Lock();
+ return lock.ref().mTextureFactoryIdentifier.mUseCompositorWnd;
+ }
+
+ WebRenderBackend GetWebRenderBackend() const {
+ auto lock = mData.Lock();
+ MOZ_ASSERT(lock.ref().mTextureFactoryIdentifier.mParentBackend ==
+ layers::LayersBackend::LAYERS_WR);
+ return lock.ref().mTextureFactoryIdentifier.mWebRenderBackend;
+ }
+
+ bool UsingHardwareWebRender() const {
+ auto lock = mData.Lock();
+ return lock.ref().mTextureFactoryIdentifier.mParentBackend ==
+ layers::LayersBackend::LAYERS_WR &&
+ lock.ref().mTextureFactoryIdentifier.mWebRenderBackend ==
+ WebRenderBackend::HARDWARE;
+ }
+
+ bool UsingSoftwareWebRender() const {
+ auto lock = mData.Lock();
+ return lock.ref().mTextureFactoryIdentifier.mParentBackend ==
+ layers::LayersBackend::LAYERS_WR &&
+ lock.ref().mTextureFactoryIdentifier.mWebRenderBackend ==
+ WebRenderBackend::SOFTWARE;
+ }
+
+ bool UsingSoftwareWebRenderD3D11() const {
+ auto lock = mData.Lock();
+ return lock.ref().mTextureFactoryIdentifier.mParentBackend ==
+ layers::LayersBackend::LAYERS_WR &&
+ lock.ref().mTextureFactoryIdentifier.mWebRenderBackend ==
+ WebRenderBackend::SOFTWARE &&
+ lock.ref().mTextureFactoryIdentifier.mWebRenderCompositor ==
+ layers::WebRenderCompositor::D3D11;
+ }
+
+ bool UsingSoftwareWebRenderOpenGL() const {
+ auto lock = mData.Lock();
+ return lock.ref().mTextureFactoryIdentifier.mParentBackend ==
+ layers::LayersBackend::LAYERS_WR &&
+ lock.ref().mTextureFactoryIdentifier.mWebRenderBackend ==
+ WebRenderBackend::SOFTWARE &&
+ lock.ref().mTextureFactoryIdentifier.mWebRenderCompositor ==
+ layers::WebRenderCompositor::OPENGL;
+ }
+
+ TextureFactoryIdentifier GetTextureFactoryIdentifier() const {
+ auto lock = mData.Lock();
+ return lock.ref().mTextureFactoryIdentifier;
+ }
+
+ int32_t GetSerial() const { return mSerial; }
+
+ /**
+ * Sends a synchronous ping to the compsoitor.
+ *
+ * This is bad for performance and should only be called as a last resort if
+ * the compositor may be blocked for a long period of time, to avoid that the
+ * content process accumulates resource allocations that the compositor is not
+ * consuming and releasing.
+ */
+ virtual void SyncWithCompositor() { MOZ_ASSERT_UNREACHABLE("Unimplemented"); }
+
+ /**
+ * Helpers for finding other related interface. These are infallible.
+ */
+ virtual TextureForwarder* GetTextureForwarder() = 0;
+ virtual LayersIPCActor* GetLayersIPCActor() = 0;
+ virtual ActiveResourceTracker* GetActiveResourceTracker() {
+ MOZ_ASSERT_UNREACHABLE("Unimplemented");
+ return nullptr;
+ }
+
+ protected:
+ struct SharedData {
+ TextureFactoryIdentifier mTextureFactoryIdentifier;
+ RefPtr<SyncObjectClient> mSyncObject;
+ };
+ mutable DataMutex<SharedData> mData;
+
+ const int32_t mSerial;
+ static mozilla::Atomic<int32_t> sSerialCounter;
+};
+
+/// Some implementations of KnowsCompositor can be used off their IPDL thread
+/// like the ImageBridgeChild, and others just can't. Instead of passing them
+/// we create a proxy KnowsCompositor that has information about compositor
+/// backend but proxies allocations to the ImageBridge.
+/// This is kind of specific to the needs of media which wants to allocate
+/// textures, usually through the Image Bridge accessed by KnowsCompositor but
+/// also wants access to the compositor backend information that ImageBridge
+/// doesn't know about.
+///
+/// This is really a band aid to what turned into a class hierarchy horror show.
+/// Hopefully we can come back and simplify this some way.
+class KnowsCompositorMediaProxy : public KnowsCompositor {
+ public:
+ NS_INLINE_DECL_THREADSAFE_REFCOUNTING(KnowsCompositorMediaProxy, override);
+
+ explicit KnowsCompositorMediaProxy(
+ const TextureFactoryIdentifier& aIdentifier);
+
+ TextureForwarder* GetTextureForwarder() override;
+
+ LayersIPCActor* GetLayersIPCActor() override;
+
+ ActiveResourceTracker* GetActiveResourceTracker() override;
+
+ void SyncWithCompositor() override;
+
+ protected:
+ virtual ~KnowsCompositorMediaProxy();
+
+ RefPtr<ImageBridgeChild> mThreadSafeAllocator;
+};
+
+} // namespace layers
+} // namespace mozilla
+
+#endif