VkShaderStageFlagBits = {
  VK_SHADER_STAGE_VERTEX_BIT: 0x1,
  VK_SHADER_STAGE_TESSELLATION_CONTROL_BIT: 0x2,
  VK_SHADER_STAGE_TESSELLATION_EVALUATION_BIT: 0x4,
  VK_SHADER_STAGE_GEOMETRY_BIT: 0x8,
  VK_SHADER_STAGE_FRAGMENT_BIT: 0x10,
  VK_SHADER_STAGE_COMPUTE_BIT: 0x20,
  VK_SHADER_STAGE_ALL_GRAPHICS: 0x0000001F,
  VK_SHADER_STAGE_ALL: 0x7FFFFFFF,
  VK_SHADER_STAGE_RAYGEN_BIT_NV: 0x100,
  VK_SHADER_STAGE_ANY_HIT_BIT_NV: 0x200,
  VK_SHADER_STAGE_CLOSEST_HIT_BIT_NV: 0x400,
  VK_SHADER_STAGE_MISS_BIT_NV: 0x800,
  VK_SHADER_STAGE_INTERSECTION_BIT_NV: 0x1000,
  VK_SHADER_STAGE_CALLABLE_BIT_NV: 0x2000,
  VK_SHADER_STAGE_TASK_BIT_NV: 0x40,
  VK_SHADER_STAGE_MESH_BIT_NV: 0x80
};