+ 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);
+ synchronize(-1, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, (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(data_size,
+ [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 = VK_IMAGE_ASPECT_COLOR_BIT;
+ 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);
+ });
+
+ const char *src = static_cast<const char *>(data);
+ copy(src, src+data_size, static_cast<char *>(staging));