VkViewportCoordinateSwizzleNV

typedef enum VkViewportCoordinateSwizzleNV {
    VK_VIEWPORT_COORDINATE_SWIZZLE_POSITIVE_X_NV = 0,
    VK_VIEWPORT_COORDINATE_SWIZZLE_NEGATIVE_X_NV = 1,
    VK_VIEWPORT_COORDINATE_SWIZZLE_POSITIVE_Y_NV = 2,
    VK_VIEWPORT_COORDINATE_SWIZZLE_NEGATIVE_Y_NV = 3,
    VK_VIEWPORT_COORDINATE_SWIZZLE_POSITIVE_Z_NV = 4,
    VK_VIEWPORT_COORDINATE_SWIZZLE_NEGATIVE_Z_NV = 5,
    VK_VIEWPORT_COORDINATE_SWIZZLE_POSITIVE_W_NV = 6,
    VK_VIEWPORT_COORDINATE_SWIZZLE_NEGATIVE_W_NV = 7,
} VkViewportCoordinateSwizzleNV;

pub struct ViewportCoordinateSwizzleNV(u32);
impl ViewportCoordinateSwizzleNV {
    pub const POSITIVE_X: Self = 0;
    pub const NEGATIVE_X: Self = 1;
    pub const POSITIVE_Y: Self = 2;
    pub const NEGATIVE_Y: Self = 3;
    pub const POSITIVE_Z: Self = 4;
    pub const NEGATIVE_Z: Self = 5;
    pub const POSITIVE_W: Self = 6;
    pub const NEGATIVE_W: Self = 7;
}