source/backends/vulkan/transferqueue.h

   1 #ifndef MSP_GL_VULKAN_TRANSFERQUEUE_H_
   2 #define MSP_GL_VULKAN_TRANSFERQUEUE_H_
   3
   4 #include <functional>
   5 #include <vector>
   6 #include "handles.h"
   7
   8 namespace Msp {
   9 namespace GL {
  10
  11 class Buffer;
  12 class Device;
  13
  14 class TransferQueue
  15 {
  16 private:
  17         struct StagingBuffer
  18         {
  19                 Device &device;
  20                 VkBuffer buffer = 0;
  21                 unsigned memory_id = 0;
  22                 std::size_t size = 0;
  23                 std::size_t used = 0;
  24                 void *mapped_address = 0;
  25                 unsigned async_count = 0;
  26                 unsigned last_frame = 0;
  27
  28                 StagingBuffer(Device &, std::size_t);
  29                 StagingBuffer(StagingBuffer &&);
  30                 ~StagingBuffer();
  31         };
  32
  33         struct PendingTransfer
  34         {
  35                 const void *object = 0;
  36                 unsigned order = 0;
  37                 int buffer_index = -1;
  38                 std::size_t offset = 0;
  39                 std::size_t size = 0;
  40                 void *staging_address = 0;
  41                 std::function<void()> synchronize;
  42                 std::function<void(VkCommandBuffer, VkBuffer, std::size_t)> transfer;
  43         };
  44
  45         Device &device;
  46         std::size_t default_buffer_size = 16*1048576;
  47         std::vector<StagingBuffer> buffers;
  48         std::vector<PendingTransfer> transfers;
  49         std::vector<PendingTransfer> async_transfers;
  50         std::map<const void *, unsigned> next_orders;
  51         unsigned current_frame = 0;
  52
  53 public:
  54         TransferQueue(Device &);
  55
  56         template<typename S, typename T>
  57         void *prepare_transfer(const void *, bool, std::size_t, S &&, T &&);
  58
  59         template<typename S, typename T>
  60         void prepare_transfer(const void *o, bool r, S &&s, T &&t)
  61         { prepare_transfer(o, r, 0, std::forward<S>(s), std::forward<T>(t)); }
  62
  63         void finalize_transfer(void *);
  64
  65 private:
  66         void allocate_staging(PendingTransfer &, std::size_t);
  67         PendingTransfer &prepare_transfer(const void *, bool, std::size_t);
  68         PendingTransfer &insert_transfer(PendingTransfer &&);
  69
  70 public:
  71         void dispatch_transfers(VkCommandBuffer);
  72 };
  73
  74 template<typename S, typename T>
  75 void *TransferQueue::prepare_transfer(const void *object, bool ordered, std::size_t size, S &&synchronize, T &&transfer)
  76 {
  77         PendingTransfer &pt = prepare_transfer(object, ordered, size);
  78         pt.synchronize = std::forward<S>(synchronize);
  79         pt.transfer = std::forward<T>(transfer);
  80         return pt.staging_address;
  81 }
  82
  83 } // namespace GL
  84 } // namespace Msp
  85
  86 #endif