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// 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_DEVICE_MEMORY_HPP_
#define VK_DEVICE_MEMORY_HPP_
#include "VkConfig.h"
#include "VkObject.hpp"
namespace vk
{
class DeviceMemory : public Object<DeviceMemory, VkDeviceMemory>
{
public:
DeviceMemory(const VkMemoryAllocateInfo* pCreateInfo, void* mem);
static size_t ComputeRequiredAllocationSize(const VkMemoryAllocateInfo* pCreateInfo);
#if SWIFTSHADER_EXTERNAL_MEMORY_LINUX_MEMFD
VkResult exportFd(int* pFd) const;
#endif
void destroy(const VkAllocationCallbacks* pAllocator);
VkResult allocate();
VkResult map(VkDeviceSize offset, VkDeviceSize size, void** ppData);
VkDeviceSize getCommittedMemoryInBytes() const;
void* getOffsetPointer(VkDeviceSize pOffset) const;
uint32_t getMemoryTypeIndex() const { return memoryTypeIndex; }
// If this is external memory, return true iff its handle type matches the bitmask
// provided by |supportedExternalHandleTypes|. Otherwise, always return true.
bool checkExternalMemoryHandleType(
VkExternalMemoryHandleTypeFlags supportedExternalMemoryHandleType) const;
// Internal implementation class for external memory. Platform-specific.
class ExternalBase;
private:
void* buffer = nullptr;
VkDeviceSize size = 0;
uint32_t memoryTypeIndex = 0;
ExternalBase* external = nullptr;
};
static inline DeviceMemory* Cast(VkDeviceMemory object)
{
return DeviceMemory::Cast(object);
}
} // namespace vk
#endif // VK_DEVICE_MEMORY_HPP_