diff options
| -rw-r--r-- | src/video_core/renderer_vulkan/wrapper.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/src/video_core/renderer_vulkan/wrapper.h b/src/video_core/renderer_vulkan/wrapper.h index e5d9b34f2..5c6729dbc 100644 --- a/src/video_core/renderer_vulkan/wrapper.h +++ b/src/video_core/renderer_vulkan/wrapper.h @@ -278,4 +278,148 @@ void Destroy(VkInstance, VkSurfaceKHR, const InstanceDispatch&) noexcept; VkResult Free(VkDevice, VkDescriptorPool, Span<VkDescriptorSet>, const DeviceDispatch&) noexcept; VkResult Free(VkDevice, VkCommandPool, Span<VkCommandBuffer>, const DeviceDispatch&) noexcept; +template <typename Type, typename OwnerType, typename Dispatch> +class Handle; + +/// Handle with an owning type. +/// Analogue to std::unique_ptr. +template <typename Type, typename OwnerType, typename Dispatch> +class Handle { +public: + /// Construct a handle and hold it's ownership. + explicit Handle(Type handle_, OwnerType owner_, const Dispatch& dld_) noexcept + : handle{handle_}, owner{owner_}, dld{&dld_} {} + + /// Construct an empty handle. + Handle() = default; + + /// Copying Vulkan objects is not supported and will never be. + Handle(const Handle&) = delete; + Handle& operator=(const Handle&) = delete; + + /// Construct a handle transfering the ownership from another handle. + Handle(Handle&& rhs) noexcept + : handle{std::exchange(rhs.handle, nullptr)}, owner{rhs.owner}, dld{rhs.dld} {} + + /// Assign the current handle transfering the ownership from another handle. + /// Destroys any previously held object. + Handle& operator=(Handle&& rhs) noexcept { + Release(); + handle = std::exchange(rhs.handle, nullptr); + owner = rhs.owner; + dld = rhs.dld; + return *this; + } + + /// Destroys the current handle if it existed. + ~Handle() noexcept { + Release(); + } + + /// Destroys any held object. + void reset() noexcept { + Release(); + handle = nullptr; + } + + /// Returns the address of the held object. + /// Intended for Vulkan structures that expect a pointer to an array. + const Type* address() const noexcept { + return &handle; + } + + /// Returns the held Vulkan handle. + Type operator*() const noexcept { + return handle; + } + + /// Returns true when there's a held object. + operator bool() const noexcept { + return handle != nullptr; + } + +protected: + Type handle = nullptr; + OwnerType owner = nullptr; + const Dispatch* dld = nullptr; + +private: + /// Destroys the held object if it exists. + void Release() noexcept { + if (handle) { + Destroy(owner, handle, *dld); + } + } +}; + +/// Dummy type used to specify a handle has no owner. +struct NoOwner {}; + +/// Handle without an owning type. +/// Analogue to std::unique_ptr +template <typename Type, typename Dispatch> +class Handle<Type, NoOwner, Dispatch> { +public: + /// Construct a handle and hold it's ownership. + explicit Handle(Type handle_, const Dispatch& dld_) noexcept : handle{handle_}, dld{&dld_} {} + + /// Construct an empty handle. + Handle() noexcept = default; + + /// Copying Vulkan objects is not supported and will never be. + Handle(const Handle&) = delete; + Handle& operator=(const Handle&) = delete; + + /// Construct a handle transfering ownership from another handle. + Handle(Handle&& rhs) noexcept : handle{std::exchange(rhs.handle, nullptr)}, dld{rhs.dld} {} + + /// Assign the current handle transfering the ownership from another handle. + /// Destroys any previously held object. + Handle& operator=(Handle&& rhs) noexcept { + Release(); + handle = std::exchange(rhs.handle, nullptr); + dld = rhs.dld; + return *this; + } + + /// Destroys the current handle if it existed. + ~Handle() noexcept { + Release(); + } + + /// Destroys any held object. + void reset() noexcept { + Release(); + handle = nullptr; + } + + /// Returns the address of the held object. + /// Intended for Vulkan structures that expect a pointer to an array. + const Type* address() const noexcept { + return &handle; + } + + /// Returns the held Vulkan handle. + Type operator*() const noexcept { + return handle; + } + + /// Returns true when there's a held object. + operator bool() const noexcept { + return handle != nullptr; + } + +protected: + Type handle = nullptr; + const Dispatch* dld = nullptr; + +private: + /// Destroys the held object if it exists. + void Release() noexcept { + if (handle) { + Destroy(handle, *dld); + } + } +}; + } // namespace Vulkan::vk |