C Specification
To query acceleration structure size parameters on the host, call:
// Provided by VK_KHR_acceleration_structure
VkResult vkWriteAccelerationStructuresPropertiesKHR(
VkDevice device,
uint32_t accelerationStructureCount,
const VkAccelerationStructureKHR* pAccelerationStructures,
VkQueryType queryType,
size_t dataSize,
void* pData,
size_t stride);
Parameters
-
device
is the device which owns the acceleration structures inpAccelerationStructures
. -
accelerationStructureCount
is the count of acceleration structures for which to query the property. -
pAccelerationStructures
is a pointer to an array of existing previously built acceleration structures. -
queryType
is a VkQueryType value specifying the property to be queried. -
dataSize
is the size in bytes of the buffer pointed to bypData
. -
pData
is a pointer to a user-allocated buffer where the results will be written. -
stride
is the stride in bytes between results for individual queries withinpData
.
Description
This command fulfills the same task as vkCmdWriteAccelerationStructuresPropertiesKHR but is executed by the host.
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.