| // Copyright 2018 The SwiftShader Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef VK_OBJECT_HPP_ |
| #define VK_OBJECT_HPP_ |
| |
| #include "VkConfig.hpp" |
| #include "VkMemory.hpp" |
| #include "System/Debug.hpp" |
| |
| #include <vulkan/vk_icd.h> |
| #undef None |
| #undef Bool |
| |
| #include <new> |
| |
| namespace vk { |
| |
| template<typename T, typename VkT> |
| static inline T *VkTtoT(VkT vkObject) |
| { |
| return static_cast<T *>(static_cast<void *>(vkObject)); |
| } |
| |
| template<typename T, typename VkT> |
| static inline VkT TtoVkT(T *object) |
| { |
| return { static_cast<uint64_t>(reinterpret_cast<uintptr_t>(object)) }; |
| } |
| |
| template<typename T, typename VkT, typename CreateInfo, typename... ExtendedInfo> |
| static VkResult Create(const VkAllocationCallbacks *pAllocator, const CreateInfo *pCreateInfo, VkT *outObject, ExtendedInfo... extendedInfo) |
| { |
| *outObject = VK_NULL_HANDLE; |
| |
| size_t size = T::ComputeRequiredAllocationSize(pCreateInfo); |
| void *memory = nullptr; |
| if(size) |
| { |
| memory = vk::allocateHostMemory(size, REQUIRED_MEMORY_ALIGNMENT, pAllocator, T::GetAllocationScope()); |
| if(!memory) |
| { |
| return VK_ERROR_OUT_OF_HOST_MEMORY; |
| } |
| } |
| |
| void *objectMemory = vk::allocateHostMemory(sizeof(T), alignof(T), pAllocator, T::GetAllocationScope()); |
| if(!objectMemory) |
| { |
| vk::freeHostMemory(memory, pAllocator); |
| return VK_ERROR_OUT_OF_HOST_MEMORY; |
| } |
| |
| auto object = new(objectMemory) T(pCreateInfo, memory, extendedInfo...); |
| |
| if(!object) |
| { |
| vk::freeHostMemory(memory, pAllocator); |
| return VK_ERROR_OUT_OF_HOST_MEMORY; |
| } |
| |
| *outObject = *object; |
| |
| // Assert that potential v-table offsets from multiple inheritance aren't causing an offset on the handle |
| ASSERT(*outObject == objectMemory); |
| |
| return VK_SUCCESS; |
| } |
| |
| template<typename T, typename VkT> |
| class ObjectBase |
| { |
| public: |
| using VkType = VkT; |
| |
| void destroy(const VkAllocationCallbacks *pAllocator) {} // Method defined by objects to delete their content, if necessary |
| |
| template<typename CreateInfo, typename... ExtendedInfo> |
| static VkResult Create(const VkAllocationCallbacks *pAllocator, const CreateInfo *pCreateInfo, VkT *outObject, ExtendedInfo... extendedInfo) |
| { |
| return vk::Create<T, VkT, CreateInfo>(pAllocator, pCreateInfo, outObject, extendedInfo...); |
| } |
| |
| static constexpr VkSystemAllocationScope GetAllocationScope() { return VK_SYSTEM_ALLOCATION_SCOPE_OBJECT; } |
| }; |
| |
| template<typename T, typename VkT> |
| class Object : public ObjectBase<T, VkT> |
| { |
| public: |
| operator VkT() |
| { |
| // The static_cast<T*> is used to make sure the returned pointer points to the |
| // beginning of the object, even if the derived class uses multiple inheritance |
| return vk::TtoVkT<T, VkT>(static_cast<T *>(this)); |
| } |
| |
| static inline T *Cast(VkT vkObject) |
| { |
| return vk::VkTtoT<T, VkT>(vkObject); |
| } |
| }; |
| |
| template<typename T, typename VkT> |
| class DispatchableObject |
| { |
| VK_LOADER_DATA loaderData = { ICD_LOADER_MAGIC }; |
| |
| T object; |
| |
| public: |
| static constexpr VkSystemAllocationScope GetAllocationScope() { return T::GetAllocationScope(); } |
| |
| template<typename... Args> |
| DispatchableObject(Args... args) |
| : object(args...) |
| { |
| } |
| |
| ~DispatchableObject() = delete; |
| |
| void destroy(const VkAllocationCallbacks *pAllocator) |
| { |
| object.destroy(pAllocator); |
| } |
| |
| void operator delete(void *ptr, const VkAllocationCallbacks *pAllocator) |
| { |
| // Should never happen |
| ASSERT(false); |
| } |
| |
| template<typename CreateInfo, typename... ExtendedInfo> |
| static VkResult Create(const VkAllocationCallbacks *pAllocator, const CreateInfo *pCreateInfo, VkT *outObject, ExtendedInfo... extendedInfo) |
| { |
| return vk::Create<DispatchableObject<T, VkT>, VkT, CreateInfo>(pAllocator, pCreateInfo, outObject, extendedInfo...); |
| } |
| |
| template<typename CreateInfo> |
| static size_t ComputeRequiredAllocationSize(const CreateInfo *pCreateInfo) |
| { |
| return T::ComputeRequiredAllocationSize(pCreateInfo); |
| } |
| |
| static inline T *Cast(VkT vkObject) |
| { |
| return (vkObject == VK_NULL_HANDLE) ? nullptr : &(reinterpret_cast<DispatchableObject<T, VkT> *>(vkObject)->object); |
| } |
| |
| operator VkT() |
| { |
| return reinterpret_cast<VkT>(this); |
| } |
| }; |
| |
| } // namespace vk |
| |
| #endif // VK_OBJECT_HPP_ |