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->mipLevels = self.levels;
  25         image_info->arrayLayers = 6;
  26 }
  27
  28 void VulkanTextureCube::sub_image(unsigned face, unsigned level, int x, int y, unsigned wd, unsigned ht, const void *data)
  29 {
  30         const TextureCube &self = *static_cast<const TextureCube *>(this);
  31
  32         unsigned level_size = self.get_level_size(level);
  33         bool discard = (x==0 && y==0 && wd==level_size && ht==level_size);
  34
  35         size_t data_size = wd*ht*get_pixel_size(storage_fmt);
  36         void *staging = device.get_transfer_queue().prepare_transfer(data_size,
  37                 [this, level, discard](){
  38                         unsigned n_levels = static_cast<const TextureCube *>(this)->levels;
  39                         change_layout(n_levels, level, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, discard);
  40                 },
  41                 [this, face, level, x, y, wd, ht](VkCommandBuffer cmd_buf, VkBuffer staging_buf, size_t src_off){
  42                         const VulkanFunctions &vk = device.get_functions();
  43
  44                         VkBufferImageCopy region = { };
  45                         region.bufferOffset = src_off;
  46                         region.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
  47                         region.imageSubresource.mipLevel = level;
  48                         region.imageSubresource.baseArrayLayer = face;
  49                         region.imageSubresource.layerCount = 1;
  50                         region.imageOffset = { x, y, 0 };
  51                         region.imageExtent = { wd, ht, 1 };
  52                         vk.CmdCopyBufferToImage(cmd_buf, staging_buf, handle, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &region);
  53                 });
  54
  55         const char *src = static_cast<const char *>(data);
  56         copy(src, src+data_size, static_cast<char *>(staging));
  57 }
  58
  59 size_t VulkanTextureCube::get_data_size() const
  60 {
  61         return 0;
  62 }
  63
  64 } // namespace GL
  65 } // namespace Msp