VkPhysicalDevice4444FormatsFeaturesEXT

The VkPhysicalDevice4444FormatsFeaturesEXT structure is defined as:

typedef struct VkPhysicalDevice4444FormatsFeaturesEXT {
    VkStructureType sType;
    void* pNext;
    VkBool32 formatA4R4G4B4;
    VkBool32 formatA4B4G4R4;
} VkPhysicalDevice4444FormatsFeaturesEXT;

This structure describes the following features:

• sType is a VkStructureType value identifying this structure.
• pNext is NULL or a pointer to a structure extending this structure.
• formatA4R4G4B4 indicates that the implementation must support using a VkFormat of VK_FORMAT_A4R4G4B4_UNORM_PACK16_EXT with at least the following VkFormatFeatureFlagBits:
  • VK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT
  • VK_FORMAT_FEATURE_BLIT_SRC_BIT
  • VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT
• formatA4B4G4R4 indicates that the implementation must support using a VkFormat of VK_FORMAT_A4B4G4R4_UNORM_PACK16_EXT with at least the following VkFormatFeatureFlagBits:
  • VK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT
  • VK_FORMAT_FEATURE_BLIT_SRC_BIT
  • VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT

If the VkPhysicalDevice4444FormatsFeaturesEXT structure is included in the pNext chain of the VkPhysicalDeviceFeatures2 structure passed to vkGetPhysicalDeviceFeatures2, it is filled in to indicate whether each corresponding feature is supported. VkPhysicalDevice4444FormatsFeaturesEXT can also be used in the pNext chain of VkDeviceCreateInfo to selectively enable these features.