case 2: return VK_FORMAT_R8G8_UINT;
case 4: return VK_FORMAT_R8G8B8A8_UINT;
case 8: return VK_FORMAT_R16G16B16A16_UINT;
+ case 12: return VK_FORMAT_R32G32B32_UINT;
case 16: return VK_FORMAT_R32G32B32A32_UINT;
default:
unreachable("Invalid format block size");