Giovanni Mascellani (@giomasce) commented about libs/vkd3d/resource.c:
+ + tile_extent = &sparse_requirements.formatProperties.imageGranularity; + tile_info = &resource->tiles.subresources[i]; + compute_image_subresource_size_in_tiles(tile_extent, &resource->desc, miplevel_idx, &tile_info->extent); + tile_info->offset = start_idx; + tile_info->count = 0; + + if (miplevel_idx < resource->tiles.standard_mip_count) + { + tile_count = tile_info->extent.width * tile_info->extent.height * tile_info->extent.depth; + start_idx += tile_count; + tile_info->count = tile_count; + } + else if (miplevel_idx == resource->tiles.standard_mip_count) + { + tile_info->count = 1; /* Non-zero dummy value */ Why are you using this dummy value? It seems that Vulkan tells you how long the miptail/packed region should be in the field `imageMipTailSize`.
-- https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/267#note_40146