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, [this, off, sz](VkCommandBuffer cmd_buf, VkBuffer staging_buf, size_t src_off){
  56                 const VulkanFunctions &vk = device.get_functions();
  57
  58                 VkBufferCopy region = { };
  59                 region.srcOffset = src_off;
  60                 region.dstOffset = off;
  61                 region.size = sz;
  62                 vk.CmdCopyBuffer(cmd_buf, staging_buf, handle, 1, &region);
  63
  64                 VkBufferMemoryBarrier barrier = { };
  65                 barrier.sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER;
  66                 barrier.srcAccessMask = VK_ACCESS_MEMORY_WRITE_BIT;
  67                 barrier.dstAccessMask = VK_ACCESS_MEMORY_READ_BIT;
  68                 barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
  69                 barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
  70                 barrier.buffer = handle_cast<::VkBuffer>(handle);
  71                 barrier.offset = off;
  72                 barrier.size = sz;
  73
  74                 vk.CmdPipelineBarrier(cmd_buf, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT,
  75                         0, 0, 0, 1, &barrier, 0, 0);
  76         });
  77
  78         const char *src = static_cast<const char *>(d);
  79         copy(src, src+sz, static_cast<char *>(staging));
  80 }
  81
  82 bool VulkanBuffer::can_map() const
  83 {
  84         return static_cast<const Buffer *>(this)->usage==STREAMING;
  85 }
  86
  87 void *VulkanBuffer::map()
  88 {
  89         size_t size = static_cast<const Buffer *>(this)->size;
  90         mapped_address = device.get_allocator().map(memory_id, 0, size);
  91         return mapped_address;
  92 }
  93
  94 bool VulkanBuffer::unmap()
  95 {
  96         device.get_allocator().unmap(mapped_address);
  97         mapped_address = 0;
  98         return true;
  99 }
 100
 101 void VulkanBuffer::set_debug_name(const string &name)
 102 {
 103 #ifdef DEBUG
 104         debug_name = name;
 105         if(handle)
 106                 set_vulkan_object_name();
 107 #else
 108         (void)name;
 109 #endif
 110 }
 111
 112 void VulkanBuffer::set_vulkan_object_name() const
 113 {
 114 #ifdef DEBUG
 115         const VulkanFunctions &vk = device.get_functions();
 116
 117         VkDebugUtilsObjectNameInfoEXT name_info = { };
 118         name_info.sType = VK_STRUCTURE_TYPE_DEBUG_UTILS_OBJECT_NAME_INFO_EXT;
 119         name_info.objectType = VK_OBJECT_TYPE_BUFFER;
 120         name_info.objectHandle = reinterpret_cast<uint64_t>(handle);
 121         name_info.pObjectName = debug_name.c_str();
 122         vk.SetDebugUtilsObjectName(name_info);
 123 #endif
 124 }
 125
 126 } // namespace GL
 127 } // namespace Msp