+
+void *VulkanTexture2D::AsyncTransfer::allocate()
+{
+ const Texture2D::AsyncTransfer &self = *static_cast<const Texture2D::AsyncTransfer *>(this);
+
+ Texture2D &tex = *self.texture;
+ unsigned level = self.level;
+ int x = self.x;
+ int y = self.y;
+ unsigned wd = self.width;
+ unsigned ht = self.height;
+
+ auto level_size = tex.get_level_size(level);
+ bool discard = (x==0 && y==0 && wd==level_size.x && ht==level_size.y);
+
+ TransferQueue &tq = tex.device.get_transfer_queue();
+ return tq.prepare_transfer(&tex, false, self.data_size,
+ [&tex, level, discard](){
+ tex.change_layout(level, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, discard);
+ },
+ [&tex, level, x, y, wd, ht](VkCommandBuffer cmd_buf, VkBuffer staging_buf, size_t src_off){
+ const VulkanFunctions &vk = tex.device.get_functions();
+
+ VkBufferImageCopy region = { };
+ region.bufferOffset = src_off;
+ region.imageSubresource.aspectMask = get_vulkan_aspect(get_components(tex.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, tex.handle, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, ®ion);
+ });
+}
+
+void VulkanTexture2D::AsyncTransfer::finalize()
+{
+ const Texture2D::AsyncTransfer &self = *static_cast<const Texture2D::AsyncTransfer *>(this);
+ self.texture->device.get_transfer_queue().finalize_transfer(self.dest_addr);
+}
+