VkPhysicalDeviceTextureCompressionASTCHDRFeatures

The VkPhysicalDeviceTextureCompressionASTCHDRFeatures structure is defined as:

typedef struct VkPhysicalDeviceTextureCompressionASTCHDRFeatures {
    VkStructureType sType;
    void* pNext;
    VkBool32 textureCompressionASTC_HDR;
} VkPhysicalDeviceTextureCompressionASTCHDRFeatures;

or the equivalent

typedef VkPhysicalDeviceTextureCompressionASTCHDRFeatures VkPhysicalDeviceTextureCompressionASTCHDRFeaturesEXT;

This structure describes the following feature:

• sType is a VkStructureType value identifying this structure.
• pNext is NULL or a pointer to a structure extending this structure.
• textureCompressionASTC_HDR indicates whether all of the ASTC HDR compressed texture formats are supported. If this feature is enabled, then the VK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT, VK_FORMAT_FEATURE_BLIT_SRC_BIT and VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT features must be supported in optimalTilingFeatures for the following formats:
  • VK_FORMAT_ASTC_4x4_SFLOAT_BLOCK
  • VK_FORMAT_ASTC_5x4_SFLOAT_BLOCK
  • VK_FORMAT_ASTC_5x5_SFLOAT_BLOCK
  • VK_FORMAT_ASTC_6x5_SFLOAT_BLOCK
  • VK_FORMAT_ASTC_6x6_SFLOAT_BLOCK
  • VK_FORMAT_ASTC_8x5_SFLOAT_BLOCK
  • VK_FORMAT_ASTC_8x6_SFLOAT_BLOCK
  • VK_FORMAT_ASTC_8x8_SFLOAT_BLOCK
  • VK_FORMAT_ASTC_10x5_SFLOAT_BLOCK
  • VK_FORMAT_ASTC_10x6_SFLOAT_BLOCK
  • VK_FORMAT_ASTC_10x8_SFLOAT_BLOCK
  • VK_FORMAT_ASTC_10x10_SFLOAT_BLOCK
  • VK_FORMAT_ASTC_12x10_SFLOAT_BLOCK
  • VK_FORMAT_ASTC_12x12_SFLOAT_BLOCK
  
  To query for additional properties, or if the feature is not enabled, vkGetPhysicalDeviceFormatProperties and vkGetPhysicalDeviceImageFormatProperties can be used to check for supported properties of individual formats as normal.

If the VkPhysicalDeviceTextureCompressionASTCHDRFeatures 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. If the application wishes to use a VkDevice with any features described by VkPhysicalDeviceTextureCompressionASTCHDRFeatures, it must add an instance of the structure, with the desired feature members set to VK_TRUE, to the pNext chain of VkDeviceCreateInfo when creating the VkDevice.