source/backends/vulkan/texture2d_backend.cpp

   1 #include "device.h"
   2 #include "texture2d.h"
   3 #include "texture2d_backend.h"
   4 #include "vulkan.h"
   5
   6 using namespace std;
   7
   8 namespace Msp {
   9 namespace GL {
  10
  11 VulkanTexture2D::VulkanTexture2D():
  12         Texture(VK_IMAGE_VIEW_TYPE_2D)
  13 { }
  14
  15 void VulkanTexture2D::fill_image_info(void *ii) const
  16 {
  17         const Texture2D &self = *static_cast<const Texture2D *>(this);
  18
  19         VkImageCreateInfo *image_info = static_cast<VkImageCreateInfo *>(ii);
  20         image_info->imageType = VK_IMAGE_TYPE_2D;
  21         image_info->extent.width = self.width;
  22         image_info->extent.height = self.height;
  23 }
  24
  25 void VulkanTexture2D::sub_image(unsigned level, int x, int y, unsigned wd, unsigned ht, const void *data)
  26 {
  27         const Texture2D &self = *static_cast<const Texture2D *>(this);
  28
  29         auto level_size = self.get_level_size(level);
  30         bool discard = (x==0 && y==0 && wd==level_size.x && ht==level_size.y);
  31
  32         TransferQueue &tq = device.get_transfer_queue();
  33         size_t data_size = wd*ht*get_pixel_size(storage_fmt);
  34         void *staging = tq.prepare_transfer(this, false, data_size,
  35                 [this, level, discard](){
  36                         change_layout(level, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, discard);
  37                 },
  38                 [this, level, x, y, wd, ht](VkCommandBuffer cmd_buf, VkBuffer staging_buf, size_t src_off){
  39                         const VulkanFunctions &vk = device.get_functions();
  40
  41                         VkBufferImageCopy region = { };
  42                         region.bufferOffset = src_off;
  43                         region.imageSubresource.aspectMask = get_vulkan_aspect(get_components(storage_fmt));
  44                         region.imageSubresource.mipLevel = level;
  45                         region.imageSubresource.baseArrayLayer = 0;
  46                         region.imageSubresource.layerCount = 1;
  47                         region.imageOffset = { x, y, 0 };
  48                         region.imageExtent = { wd, ht, 1 };
  49                         vk.CmdCopyBufferToImage(cmd_buf, staging_buf, handle, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &region);
  50                 });
  51
  52         stage_pixels(staging, data, wd*ht);
  53         tq.finalize_transfer(staging);
  54 }
  55
  56 void VulkanTexture2D::fill_mipmap_blit(unsigned level, void *b)
  57 {
  58         const Texture2D &self = *static_cast<const Texture2D *>(this);
  59         VkImageBlit &blit = *static_cast<VkImageBlit *>(b);
  60
  61         auto src_size = self.get_level_size(level);
  62         auto dst_size = self.get_level_size(level+1);
  63
  64         blit.srcOffsets[1] = { static_cast<int>(src_size.x), static_cast<int>(src_size.y), 1 };
  65         blit.dstOffsets[1] = { static_cast<int>(dst_size.x), static_cast<int>(dst_size.y), 1 };
  66 }
  67
  68 Resource::AsyncLoader *VulkanTexture2D::load(IO::Seekable &, const Resources *)
  69 {
  70         throw logic_error("Texture2D::load is unimplemented");
  71 }
  72
  73 uint64_t VulkanTexture2D::get_data_size() const
  74 {
  75         return 0;
  76 }
  77
  78 void VulkanTexture2D::unload()
  79 {
  80 }
  81
  82 } // namespace GL
  83 } // namespace Msp