## C Specification

The VkPhysicalDeviceProvokingVertexFeaturesEXT structure is defined as:

// Provided by VK_EXT_provoking_vertex
typedef struct VkPhysicalDeviceProvokingVertexFeaturesEXT {
VkStructureType    sType;
void*              pNext;
VkBool32           provokingVertexLast;
VkBool32           transformFeedbackPreservesProvokingVertex;
} VkPhysicalDeviceProvokingVertexFeaturesEXT;

## Members

This structure describes the following feature:

## Description

• sType is the type of this structure.

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

• provokingVertexLast indicates whether the implementation supports the VK_PROVOKING_VERTEX_MODE_LAST_VERTEX_EXT provoking vertex mode for flat shading.

• transformFeedbackPreservesProvokingVertex indicates that the order of vertices within each primitive written by transform feedback will preserve the provoking vertex. This does not apply to triangle fan primitives when transformFeedbackPreservesTriangleFanProvokingVertex is VK_FALSE. transformFeedbackPreservesProvokingVertex must be VK_FALSE when the VK_EXT_transform_feedback extension is not supported.

If the VkPhysicalDeviceProvokingVertexFeaturesEXT 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. VkPhysicalDeviceProvokingVertexFeaturesEXT can also be used in the pNext chain of VkDeviceCreateInfo to selectively enable these features.

When VkPhysicalDeviceProvokingVertexFeaturesEXT is in the pNext chain of VkDeviceCreateInfo but the transform feedback feature is not enabled, the value of transformFeedbackPreservesProvokingVertex is ignored.

Valid Usage (Implicit)
• VUID-VkPhysicalDeviceProvokingVertexFeaturesEXT-sType-sType
sType must be VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROVOKING_VERTEX_FEATURES_EXT

VK_EXT_provoking_vertex, VkBool32, VkStructureType

## Document Notes

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.

Copyright 2014-2021 The Khronos Group Inc.