VkSamplerBorderColorComponentMappingCreateInfoEXT

If the sampler is created with VK_BORDER_COLOR_FLOAT_OPAQUE_BLACK, VK_BORDER_COLOR_INT_OPAQUE_BLACK, VK_BORDER_COLOR_FLOAT_CUSTOM_EXT, or VK_BORDER_COLOR_INT_CUSTOM_EXT borderColor, and that sampler will be combined with an image view that does not have an identity swizzle, and VkPhysicalDeviceBorderColorSwizzleFeaturesEXT::borderColorSwizzleFromImage is not enabled, then it is necessary to specify the component mapping of the border color, by including the VkSamplerBorderColorComponentMappingCreateInfoEXT structure in the VkSamplerCreateInfo::pNext chain, to get defined results.

The VkSamplerBorderColorComponentMappingCreateInfoEXT structure is defined as:

typedef struct VkSamplerBorderColorComponentMappingCreateInfoEXT {
    VkStructureType sType;
    const void* pNext;
    VkComponentMapping components;
    VkBool32 srgb;
} VkSamplerBorderColorComponentMappingCreateInfoEXT;

• sType is a VkStructureType value identifying this structure.
• pNext is NULL or a pointer to a structure extending this structure.
• components is a VkComponentMapping structure specifying a remapping of the border color components.
• srgb indicates that the sampler will be combined with an image view that has an image format which is sRGB encoded.

The VkComponentMapping components member describes a remapping from components of the border color to components of the vector returned by shader image instructions when the border color is used.