source/backends/vulkan/buffer_backend.cpp

   1 #include "buffer.h"
   2 #include "buffer_backend.h"
   3 #include "device.h"
   4 #include "vulkan.h"
   5
   6 using namespace std;
   7
   8 namespace Msp {
   9 namespace GL {
  10
  11 VulkanBuffer::VulkanBuffer():
  12         device(Device::get_current())
  13 { }
  14
  15 VulkanBuffer::VulkanBuffer(VulkanBuffer &&other):
  16         device(other.device),
  17         handle(other.handle),
  18         memory_id(other.memory_id),
  19         mapped_address(other.mapped_address),
  20         debug_name(move(other.debug_name))
  21 {
  22         other.handle = 0;
  23         other.memory_id = 0;
  24         other.mapped_address = 0;
  25 }
  26
  27 VulkanBuffer::~VulkanBuffer()
  28 {
  29         if(handle)
  30                 device.get_destroy_queue().destroy(handle, memory_id);
  31 }
  32
  33 void VulkanBuffer::allocate()
  34 {
  35         const Buffer &self = *static_cast<const Buffer *>(this);
  36         const VulkanFunctions &vk = device.get_functions();
  37
  38         VkBufferCreateInfo buffer_info = { };
  39         buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
  40         buffer_info.size = self.size;
  41         buffer_info.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT|VK_BUFFER_USAGE_TRANSFER_DST_BIT|VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT|
  42                 VK_BUFFER_USAGE_INDEX_BUFFER_BIT|VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
  43         buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
  44
  45         vk.CreateBuffer(buffer_info, handle);
  46
  47         memory_id = device.get_allocator().allocate(handle, (self.usage==STREAMING ? STREAMING_MEMORY : DEVICE_MEMORY));
  48
  49         if(!debug_name.empty())
  50                 set_vulkan_object_name();
  51 }
  52
  53 void VulkanBuffer::sub_data(size_t off, size_t sz, const void *d)
  54 {
  55         device.get_synchronizer().access(handle, off, sz);
  56
  57         void *staging = device.get_transfer_queue().prepare_transfer(sz, [this, off, sz](VkCommandBuffer cmd_buf, VkBuffer staging_buf, size_t src_off){
  58                 const VulkanFunctions &vk = device.get_functions();
  59
  60                 VkBufferCopy region = { };
  61                 region.srcOffset = src_off;
  62                 region.dstOffset = off;
  63                 region.size = sz;
  64                 vk.CmdCopyBuffer(cmd_buf, staging_buf, handle, 1, &region);
  65         });
  66
  67         const char *src = static_cast<const char *>(d);
  68         copy(src, src+sz, static_cast<char *>(staging));
  69 }
  70
  71 bool VulkanBuffer::can_map() const
  72 {
  73         return static_cast<const Buffer *>(this)->usage==STREAMING;
  74 }
  75
  76 void *VulkanBuffer::map()
  77 {
  78         size_t size = static_cast<const Buffer *>(this)->size;
  79         mapped_address = device.get_allocator().map(memory_id, 0, size);
  80         return mapped_address;
  81 }
  82
  83 bool VulkanBuffer::unmap()
  84 {
  85         device.get_allocator().unmap(mapped_address);
  86         mapped_address = 0;
  87         return true;
  88 }
  89
  90 void VulkanBuffer::set_debug_name(const string &name)
  91 {
  92 #ifdef DEBUG
  93         debug_name = name;
  94         if(handle)
  95                 set_vulkan_object_name();
  96 #else
  97         (void)name;
  98 #endif
  99 }
 100
 101 void VulkanBuffer::set_vulkan_object_name() const
 102 {
 103 #ifdef DEBUG
 104         const VulkanFunctions &vk = device.get_functions();
 105
 106         VkDebugUtilsObjectNameInfoEXT name_info = { };
 107         name_info.sType = VK_STRUCTURE_TYPE_DEBUG_UTILS_OBJECT_NAME_INFO_EXT;
 108         name_info.objectType = VK_OBJECT_TYPE_BUFFER;
 109         name_info.objectHandle = reinterpret_cast<uint64_t>(handle);
 110         name_info.pObjectName = debug_name.c_str();
 111         vk.SetDebugUtilsObjectName(name_info);
 112 #endif
 113 }
 114
 115 } // namespace GL
 116 } // namespace Msp