source/backends/vulkan/texturecube_backend.cpp

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