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#pragma once
#include <queue>
#include "dxvk_buffer.h"
namespace dxvk {
class DxvkDevice;
/**
* \brief Staging data allocator
*
* Allocates buffer slices for resource uploads,
* while trying to keep the number of allocations
* but also the amount of allocated memory low.
*/
class DxvkStagingDataAlloc {
constexpr static VkDeviceSize MaxBufferSize = 1 << 25; // 32 MiB
constexpr static uint32_t MaxBufferCount = 2;
public:
DxvkStagingDataAlloc(const Rc<DxvkDevice>& device);
~DxvkStagingDataAlloc();
/**
* \brief Alloctaes a staging buffer slice
*
* \param [in] align Alignment of the allocation
* \param [in] size Size of the allocation
* \returns Staging buffer slice
*/
DxvkBufferSlice alloc(VkDeviceSize align, VkDeviceSize size);
/**
* \brief Deletes all staging buffers
*
* Destroys allocated buffers and
* releases all buffer memory.
*/
void trim();
private:
Rc<DxvkDevice> m_device;
Rc<DxvkBuffer> m_buffer;
VkDeviceSize m_offset = 0;
std::queue<Rc<DxvkBuffer>> m_buffers;
Rc<DxvkBuffer> createBuffer(VkDeviceSize size);
};
}
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