VkPhysicalDeviceSubgroupSizeControlFeatures

The VkPhysicalDeviceSubgroupSizeControlFeatures structure is defined as:

typedef struct VkPhysicalDeviceSubgroupSizeControlFeatures {
    VkStructureType sType;
    void* pNext;
    VkBool32 subgroupSizeControl;
    VkBool32 computeFullSubgroups;
} VkPhysicalDeviceSubgroupSizeControlFeatures;

or the equivalent

typedef VkPhysicalDeviceSubgroupSizeControlFeatures VkPhysicalDeviceSubgroupSizeControlFeaturesEXT;

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.
• subgroupSizeControl indicates whether the implementation supports controlling shader subgroup sizes via the VK_PIPELINE_SHADER_STAGE_CREATE_ALLOW_VARYING_SUBGROUP_SIZE_BIT flag and the VkPipelineShaderStageRequiredSubgroupSizeCreateInfo structure.
• computeFullSubgroups indicates whether the implementation supports requiring full subgroups in compute , mesh, or task shaders via the VK_PIPELINE_SHADER_STAGE_CREATE_REQUIRE_FULL_SUBGROUPS_BIT flag.

If the VkPhysicalDeviceSubgroupSizeControlFeatures 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 VkPhysicalDeviceSubgroupSizeControlFeatures, 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.