C Specification
To begin an indexed query, call:
// Provided by VK_EXT_transform_feedback
void vkCmdBeginQueryIndexedEXT(
VkCommandBuffer commandBuffer,
VkQueryPool queryPool,
uint32_t query,
VkQueryControlFlags flags,
uint32_t index);
Parameters
-
commandBuffer
is the command buffer into which this command will be recorded. -
queryPool
is the query pool that will manage the results of the query. -
query
is the query index within the query pool that will contain the results. -
flags
is a bitmask of VkQueryControlFlagBits specifying constraints on the types of queries that can be performed. -
index
is the query type specific index. When the query type isVK_QUERY_TYPE_TRANSFORM_FEEDBACK_STREAM_EXT
orVK_QUERY_TYPE_PRIMITIVES_GENERATED_EXT
, the index represents the vertex stream.
Description
The vkCmdBeginQueryIndexedEXT
command operates the same as the
vkCmdBeginQuery command, except that it also accepts a query type
specific index
parameter.
This command defines an execution dependency between other query commands that reference the same query index.
The first synchronization scope
includes all commands which reference the queries in queryPool
indicated by query
and index
that occur earlier in
submission order.
The second synchronization scope
includes all commands which reference the queries in queryPool
indicated by query
and index
that occur later in
submission order.
The operation of this command happens after the first scope and happens before the second scope.
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.