VkCompositeAlphaFlagBitsKHR = {
  VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR: 0x1,
  VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR: 0x2,
  VK_COMPOSITE_ALPHA_POST_MULTIPLIED_BIT_KHR: 0x4,
  VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR: 0x8
};