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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.
#include "VkDeviceMemory.hpp"
#include "VkConfig.h"
namespace vk
{
DeviceMemory::DeviceMemory(const VkMemoryAllocateInfo* pCreateInfo, void* mem) :
size(pCreateInfo->allocationSize), memoryTypeIndex(pCreateInfo->memoryTypeIndex)
{
ASSERT(size);
}
void DeviceMemory::destroy(const VkAllocationCallbacks* pAllocator)
{
vk::deallocate(buffer, DEVICE_MEMORY);
}
size_t DeviceMemory::ComputeRequiredAllocationSize(const VkMemoryAllocateInfo* pCreateInfo)
{
// buffer is "GPU memory", so we use device memory for it
return 0;
}
VkResult DeviceMemory::allocate()
{
if(!buffer)
{
buffer = vk::allocate(size, REQUIRED_MEMORY_ALIGNMENT, DEVICE_MEMORY);
}
if(!buffer)
{
return VK_ERROR_OUT_OF_DEVICE_MEMORY;
}
return VK_SUCCESS;
}
VkResult DeviceMemory::map(VkDeviceSize pOffset, VkDeviceSize pSize, void** ppData)
{
*ppData = getOffsetPointer(pOffset);
return VK_SUCCESS;
}
VkDeviceSize DeviceMemory::getCommittedMemoryInBytes() const
{
return size;
}
void* DeviceMemory::getOffsetPointer(VkDeviceSize pOffset) const
{
ASSERT(buffer);
return reinterpret_cast<char*>(buffer) + pOffset;
}
} // namespace vk