## C Specification

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,
VK_COMPONENT_SWIZZLE_MAX_ENUM = 0x7FFFFFFF
} VkComponentSwizzle;

## Description

• 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:

Table 1. Component Mappings Equivalent To VK_COMPONENT_SWIZZLE_IDENTITY
Component Identity Mapping

components.r

VK_COMPONENT_SWIZZLE_R

components.g

VK_COMPONENT_SWIZZLE_G

components.b

VK_COMPONENT_SWIZZLE_B

components.a

VK_COMPONENT_SWIZZLE_A