C Specification
The VkPhysicalDeviceSubgroupSizeControlPropertiesEXT structure is
defined as:
// Provided by VK_EXT_subgroup_size_control
typedef struct VkPhysicalDeviceSubgroupSizeControlPropertiesEXT {
VkStructureType sType;
void* pNext;
uint32_t minSubgroupSize;
uint32_t maxSubgroupSize;
uint32_t maxComputeWorkgroupSubgroups;
VkShaderStageFlags requiredSubgroupSizeStages;
} VkPhysicalDeviceSubgroupSizeControlPropertiesEXT;
Members
-
sTypeis the type of this structure. -
pNextisNULLor a pointer to a structure extending this structure. -
minSubgroupSizeis the minimum subgroup size supported by this device.minSubgroupSizeis at least one if any of the physical device’s queues supportVK_QUEUE_GRAPHICS_BITorVK_QUEUE_COMPUTE_BIT.minSubgroupSizeis a power-of-two.minSubgroupSizeis less than or equal tomaxSubgroupSize.minSubgroupSizeis less than or equal to subgroupSize. -
maxSubgroupSizeis the maximum subgroup size supported by this device.maxSubgroupSizeis at least one if any of the physical device’s queues supportVK_QUEUE_GRAPHICS_BITorVK_QUEUE_COMPUTE_BIT.maxSubgroupSizeis a power-of-two.maxSubgroupSizeis greater than or equal tominSubgroupSize.maxSubgroupSizeis greater than or equal to subgroupSize. -
maxComputeWorkgroupSubgroupsis the maximum number of subgroups supported by the implementation within a workgroup. -
requiredSubgroupSizeStagesis a bitfield of what shader stages support having a required subgroup size specified.
Description
If the VkPhysicalDeviceSubgroupSizeControlPropertiesEXT structure is included in the pNext chain of the
VkPhysicalDeviceProperties2 structure passed to
vkGetPhysicalDeviceProperties2, it is filled in with the corresponding
implementation-dependent properties.
If VkPhysicalDeviceSubgroupProperties::supportedOperations
includes VK_SUBGROUP_FEATURE_QUAD_BIT,
minSubgroupSize must be greater than or equal to 4.
Document Notes
For more information, see the Vulkan Specification
This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.