region.imageSubresource.mipLevel = level;
region.imageSubresource.baseArrayLayer = face;
region.imageSubresource.layerCount = 1;
region.imageOffset = { x, y, 0 };
region.imageExtent = { wd, ht, 1 };
region.imageSubresource.mipLevel = level;
region.imageSubresource.baseArrayLayer = face;
region.imageSubresource.layerCount = 1;
region.imageOffset = { x, y, 0 };
region.imageExtent = { wd, ht, 1 };