VkComponentSwizzle

Possible values of the members of VkComponentMapping, specifying the component values placed in each component of the output vector, are:

typedef enum VkComponentSwizzle {
    VK_COMPONENT_SWIZZLE_IDENTITY = 0,
    VK_COMPONENT_SWIZZLE_ZERO = 1,
    VK_COMPONENT_SWIZZLE_ONE = 2,
    VK_COMPONENT_SWIZZLE_R = 3,
    VK_COMPONENT_SWIZZLE_G = 4,
    VK_COMPONENT_SWIZZLE_B = 5,
    VK_COMPONENT_SWIZZLE_A = 6,
} VkComponentSwizzle;

pub struct ComponentSwizzle(u32);
impl ComponentSwizzle {
    pub const IDENTITY: Self = 0;
    pub const ZERO: Self = 1;
    pub const ONE: Self = 2;
    pub const R: Self = 3;
    pub const G: Self = 4;
    pub const B: Self = 5;
    pub const A: Self = 6;
}

• VK_COMPONENT_SWIZZLE_IDENTITY specifies that the component is set to the identity swizzle.
• VK_COMPONENT_SWIZZLE_ZERO specifies that the component is set to zero.
• VK_COMPONENT_SWIZZLE_ONE specifies that the component is set to either 1 or 1.0, depending on whether the type of the image view format is integer or floating-point respectively, as determined by the Format Definition section for each VkFormat.
• VK_COMPONENT_SWIZZLE_R specifies that the component is set to the value of the R component of the image.
• VK_COMPONENT_SWIZZLE_G specifies that the component is set to the value of the G component of the image.
• VK_COMPONENT_SWIZZLE_B specifies that the component is set to the value of the B component of the image.
• VK_COMPONENT_SWIZZLE_A specifies that the component is set to the value of the A component of the image.

Setting the identity swizzle on a component is equivalent to setting the identity mapping on that component. That is: