+ const Texture2D &self = *static_cast<const Texture2D *>(this);
+
+ VkImageCreateInfo *image_info = static_cast<VkImageCreateInfo *>(ii);
+ image_info->imageType = VK_IMAGE_TYPE_2D;
+ image_info->extent.width = self.width;
+ image_info->extent.height = self.height;
+ image_info->mipLevels = self.levels;
+}
+
+void VulkanTexture2D::sub_image(unsigned level, int x, int y, unsigned wd, unsigned ht, const void *data)
+{
+ const Texture2D &self = *static_cast<const Texture2D *>(this);
+
+ auto level_size = self.get_level_size(level);
+ bool discard = (x==0 && y==0 && wd==level_size.x && ht==level_size.y);
+
+ size_t data_size = wd*ht*get_pixel_size(storage_fmt);
+ void *staging = device.get_transfer_queue().prepare_transfer(this, false, data_size,
+ [this, level, discard](){
+ unsigned n_levels = static_cast<const Texture2D *>(this)->levels;
+ change_layout(n_levels, level, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, discard);
+ },
+ [this, level, x, y, wd, ht](VkCommandBuffer cmd_buf, VkBuffer staging_buf, size_t src_off){
+ const VulkanFunctions &vk = device.get_functions();
+
+ VkBufferImageCopy region = { };
+ region.bufferOffset = src_off;
+ region.imageSubresource.aspectMask = get_vulkan_aspect(get_components(storage_fmt));
+ region.imageSubresource.mipLevel = level;
+ region.imageSubresource.baseArrayLayer = 0;
+ region.imageSubresource.layerCount = 1;
+ region.imageOffset = { x, y, 0 };
+ region.imageExtent = { wd, ht, 1 };
+ vk.CmdCopyBufferToImage(cmd_buf, staging_buf, handle, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, ®ion);
+ });
+
+ stage_pixels(staging, data, wd*ht);
+}
+
+void VulkanTexture2D::generate_mipmap()
+{
+ generate_mipmap_levels(static_cast<const Texture2D *>(this)->levels);
+}
+
+void VulkanTexture2D::fill_mipmap_blit(unsigned level, void *b)
+{
+ const Texture2D &self = *static_cast<const Texture2D *>(this);
+ VkImageBlit &blit = *static_cast<VkImageBlit *>(b);
+
+ auto src_size = self.get_level_size(level);
+ auto dst_size = self.get_level_size(level+1);
+
+ blit.srcOffsets[1] = { static_cast<int>(src_size.x), static_cast<int>(src_size.y), 1 };
+ blit.dstOffsets[1] = { static_cast<int>(dst_size.x), static_cast<int>(dst_size.y), 1 };