dali/graphics/vulkan/vulkan-device-memory-manager.h

   1 //
   2 // Created by adam.b on 06/06/17.
   3 //
   4
   5 #ifndef VULKAN_PROJECT_DEVICEMEMORYMANAGER_H
   6 #define VULKAN_PROJECT_DEVICEMEMORYMANAGER_H
   7
   8 #include <dali/graphics/vulkan/vulkan-types.h>
   9
  10 namespace Dali
  11 {
  12 namespace Graphics
  13 {
  14 namespace Vulkan
  15 {
  16
  17 class Graphics;
  18 class Image;
  19 class Buffer;
  20 class DeviceMemoryManager;
  21
  22 /**
  23  * DeviceMemory represents continuous memory block with particular properties
  24  * like being mappable etc. The actual memory is being allocated from DeviceMemory,
  25  * however simplest use may assume use of whole DeviceMemory block for a single
  26  * resource/
  27  */
  28 class DeviceMemory
  29 {
  30 public:
  31   DeviceMemory(DeviceMemoryManager& manager, Graphics& graphics,
  32                const vk::MemoryRequirements& requirements, vk::MemoryPropertyFlags properties);
  33
  34   void* Map(uint32_t offset, uint32_t size);
  35
  36   void Unmap();
  37
  38   void Bind( Image& image, uint32_t offset );
  39   void Bind( Buffer& image, uint32_t offset );
  40
  41 private:
  42   DeviceMemoryManager& mManager;
  43   Graphics&            mGraphics;
  44
  45   vk::DeviceMemory        mDeviceMemory;
  46   vk::MemoryPropertyFlags mProperties;
  47   vk::MemoryRequirements  mRequirements;
  48
  49   std::atomic< uint32_t > mUserCount; // this is just a refcount
  50 };
  51
  52 /**
  53  * DeviceMemoryManager
  54  */
  55 class DeviceMemoryManager
  56 {
  57 public:
  58   DeviceMemoryManager() = delete;
  59   DeviceMemoryManager(Graphics& graphics);
  60   ~DeviceMemoryManager()                          = default;
  61   DeviceMemoryManager(const DeviceMemoryManager&) = delete;
  62   DeviceMemoryManager(DeviceMemoryManager&&)      = default;
  63
  64   DeviceMemoryManager& operator=(const DeviceMemoryManager&) = delete;
  65   DeviceMemoryManager& operator=(DeviceMemoryManager&&) = default;
  66
  67   /* Allocates memory for VkImage */
  68   vk::DeviceMemory& Allocate(vk::Image image, vk::MemoryPropertyFlags memoryFlags);
  69
  70   /* Allocates memory for VkBuffer */
  71   vk::DeviceMemory& Allocate(vk::Buffer image, vk::MemoryPropertyFlags memoryFlags);
  72
  73   std::unique_ptr< DeviceMemory > Allocate(vk::MemoryRequirements  requirements,
  74                                            vk::MemoryPropertyFlags flags);
  75
  76   Graphics& GetGraphics() const
  77   {
  78     return mGraphics;
  79   }
  80
  81 private:
  82   Graphics& mGraphics;
  83 };
  84
  85 } // namespace Vulkan
  86 } // namespace Graphics
  87 } // namespace Dali
  88
  89 #endif //VULKAN_PROJECT_DEVICEMEMORYMANAGER_H