C Specification

To query 64-bit atomic support for signed and unsigned integers with buffers and shared memory call vkGetPhysicalDeviceFeatures2 with a VkPhysicalDeviceShaderAtomicInt64Features structure included in the pNext chain of its pFeatures parameter.

The VkPhysicalDeviceShaderAtomicInt64Features structure is defined as:

// Provided by VK_VERSION_1_2
typedef struct VkPhysicalDeviceShaderAtomicInt64Features {
    VkStructureType    sType;
    void*              pNext;
    VkBool32           shaderBufferInt64Atomics;
    VkBool32           shaderSharedInt64Atomics;
} VkPhysicalDeviceShaderAtomicInt64Features;

or the equivalent

// Provided by VK_KHR_shader_atomic_int64
typedef VkPhysicalDeviceShaderAtomicInt64Features VkPhysicalDeviceShaderAtomicInt64FeaturesKHR;

Members

  • sType is the type of this structure.

  • pNext is NULL or a pointer to a structure extending this structure.

Description

  • shaderBufferInt64Atomics indicates whether shaders can perform 64-bit unsigned and signed integer atomic operations on buffers.

  • shaderSharedInt64Atomics indicates whether shaders can perform 64-bit unsigned and signed integer atomic operations on shared memory.

Valid Usage (Implicit)

  • VUID-VkPhysicalDeviceShaderAtomicInt64Features-sType-sType
    sType must be VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_ATOMIC_INT64_FEATURES

See Also

VkBool32, VkStructureType

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.

Copyright

Copyright 2014-2021 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0