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         void *staging = device.get_transfer_queue().prepare_transfer(sz,
  56                 [this, off, sz](){
  57                         device.get_synchronizer().write_buffer(handle, off, sz);
  58                 },
  59                 [this, off, sz](VkCommandBuffer cmd_buf, VkBuffer staging_buf, size_t src_off){
  60                         const VulkanFunctions &vk = device.get_functions();
  61
  62                         VkBufferCopy region = { };
  63                         region.srcOffset = src_off;
  64                         region.dstOffset = off;
  65                         region.size = sz;
  66                         vk.CmdCopyBuffer(cmd_buf, staging_buf, handle, 1, &region);
  67                 });
  68
  69         const char *src = static_cast<const char *>(d);
  70         copy(src, src+sz, static_cast<char *>(staging));
  71 }
  72
  73 bool VulkanBuffer::can_map() const
  74 {
  75         return static_cast<const Buffer *>(this)->usage==STREAMING;
  76 }
  77
  78 void *VulkanBuffer::map()
  79 {
  80         size_t size = static_cast<const Buffer *>(this)->size;
  81         mapped_address = device.get_allocator().map(memory_id, 0, size);
  82         return mapped_address;
  83 }
  84
  85 bool VulkanBuffer::unmap()
  86 {
  87         device.get_allocator().unmap(mapped_address);
  88         mapped_address = 0;
  89         return true;
  90 }
  91
  92 void VulkanBuffer::set_debug_name(const string &name)
  93 {
  94 #ifdef DEBUG
  95         debug_name = name;
  96         if(handle)
  97                 set_vulkan_object_name();
  98 #else
  99         (void)name;
 100 #endif
 101 }
 102
 103 void VulkanBuffer::set_vulkan_object_name() const
 104 {
 105 #ifdef DEBUG
 106         const VulkanFunctions &vk = device.get_functions();
 107
 108         VkDebugUtilsObjectNameInfoEXT name_info = { };
 109         name_info.sType = VK_STRUCTURE_TYPE_DEBUG_UTILS_OBJECT_NAME_INFO_EXT;
 110         name_info.objectType = VK_OBJECT_TYPE_BUFFER;
 111         name_info.objectHandle = reinterpret_cast<uint64_t>(handle);
 112         name_info.pObjectName = debug_name.c_str();
 113         vk.SetDebugUtilsObjectName(name_info);
 114 #endif
 115 }
 116
 117 } // namespace GL
 118 } // namespace Msp