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