VkIndexType

typedef enum VkIndexType {
    VK_INDEX_TYPE_UINT16 = 0,
    VK_INDEX_TYPE_UINT32 = 1,
    // Provided by extensions
    VK_INDEX_TYPE_UINT8 = -1000265000,
    VK_INDEX_TYPE_NONE_KHR = -1000165000,
    VK_INDEX_TYPE_NONE_NV = VK_INDEX_TYPE_NONE_KHR,
    VK_INDEX_TYPE_UINT8_EXT = VK_INDEX_TYPE_UINT8,
    VK_INDEX_TYPE_UINT8_KHR = VK_INDEX_TYPE_UINT8,
} VkIndexType;

pub struct IndexType(u32);
impl IndexType {
    pub const UINT16: Self = 0;
    pub const UINT32: Self = 1;
    pub const UINT8: Self = -1000265000;
    pub const NONE_KHR: Self = -1000165000;
    pub const NONE_NV: Self = Self::NONE_KHR;
    pub const UINT8_EXT: Self = Self::UINT8;
    pub const UINT8_KHR: Self = Self::UINT8;
}