forked from mirrors/gecko-dev
3021defc28
This change adds support for CanvasContext presenting WebGPU via CPU readback. The presentation is handled mostly on GPU process side by managing a list of staging buffers and copying the contents into a WR external image (backed by an external buffer). Differential Revision: https://phabricator.services.mozilla.com/D68032 --HG-- extra : moz-landing-system : lando
97 lines
3.1 KiB
C++
97 lines
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GPU_OBJECT_MODEL_H_
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#define GPU_OBJECT_MODEL_H_
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#include "nsWrapperCache.h"
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#include "nsString.h"
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class nsIGlobalObject;
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namespace mozilla {
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namespace webgpu {
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class WebGPUChild;
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template <typename T>
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class ChildOf {
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protected:
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explicit ChildOf(T* const parent);
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virtual ~ChildOf();
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RefPtr<T> mParent;
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public:
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nsIGlobalObject* GetParentObject() const;
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};
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class ObjectBase : public nsWrapperCache {
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private:
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nsString mLabel;
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protected:
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virtual ~ObjectBase() = default;
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// Internal mutability model for WebGPU objects.
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bool mValid = true;
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public:
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void GetLabel(nsAString& aValue) const;
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void SetLabel(const nsAString& aLabel);
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};
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} // namespace webgpu
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} // namespace mozilla
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#define GPU_DECL_JS_WRAP(T) \
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JSObject* WrapObject(JSContext* cx, JS::Handle<JSObject*> givenProto) \
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override;
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#define GPU_DECL_CYCLE_COLLECTION(T) \
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(T) \
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NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(T)
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#define GPU_IMPL_JS_WRAP(T) \
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JSObject* T::WrapObject(JSContext* cx, JS::Handle<JSObject*> givenProto) { \
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return dom::GPU##T##_Binding::Wrap(cx, this, givenProto); \
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}
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// Note: we don't use `NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE` directly
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// because there is a custom action we need to always do.
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#define GPU_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(T, ...) \
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NS_IMPL_CYCLE_COLLECTION_CLASS(T) \
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(T) \
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tmp->Cleanup(); \
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NS_IMPL_CYCLE_COLLECTION_UNLINK(__VA_ARGS__) \
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NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER \
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END \
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(T) \
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(__VA_ARGS__) \
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END \
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NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(T)
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#define GPU_IMPL_CYCLE_COLLECTION(T, ...) \
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NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(T, AddRef) \
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NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(T, Release) \
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GPU_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(T, __VA_ARGS__)
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template <typename T>
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void ImplCycleCollectionTraverse(nsCycleCollectionTraversalCallback& callback,
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nsTArray<RefPtr<const T>>& field,
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const char* name, uint32_t flags) {
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for (auto& element : field) {
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CycleCollectionNoteChild(callback, const_cast<T*>(element.get()), name,
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flags);
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}
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}
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template <typename T>
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void ImplCycleCollectionUnlink(nsTArray<RefPtr<const T>>& field) {
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for (auto& element : field) {
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ImplCycleCollectionUnlink(element);
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}
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field.Clear();
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}
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#endif // GPU_OBJECT_MODEL_H_
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