Enum vulkano::query::QueryType

#[non_exhaustive]
#[repr(i32)]
pub enum QueryType {
    Occlusion = 0,
    PipelineStatistics(QueryPipelineStatisticFlags),
    Timestamp = 2,
    AccelerationStructureCompactedSize = 1_000_150_000,
    AccelerationStructureSerializationSize = 1_000_150_001,
    AccelerationStructureSerializationBottomLevelPointers = 1_000_386_000,
    AccelerationStructureSize = 1_000_386_001,
}

The type of query that a query pool should perform.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Occlusion = 0

Tracks the number of samples that pass per-fragment tests (e.g. the depth test).

Used with the begin_query and end_query commands.

PipelineStatistics(QueryPipelineStatisticFlags)

Tracks statistics on pipeline invocations and their input data.

Used with the begin_query and end_query commands.

Timestamp = 2

Writes timestamps at chosen points in a command buffer.

Used with the write_timestamp command.

AccelerationStructureCompactedSize = 1_000_150_000

Queries the size of data resulting from a CopyAccelerationStructureMode::Compact operation.

Used with the write_acceleration_structures_properties command.

AccelerationStructureSerializationSize = 1_000_150_001

Queries the size of data resulting from a CopyAccelerationStructureMode::Serialize operation.

Used with the write_acceleration_structures_properties command.

AccelerationStructureSerializationBottomLevelPointers = 1_000_386_000

For a top-level acceleration structure, queries the number of bottom-level acceleration structure handles that will be written during a CopyAccelerationStructureMode::Serialize operation.

Used with the write_acceleration_structures_properties command.

AccelerationStructureSize = 1_000_386_001

Queries the total size of an acceleration structure.

Used with the write_acceleration_structures_properties command.

Implementations

impl QueryType

pub const fn result_len(&self) -> DeviceSize

Returns the number of QueryResultElements that are needed to hold the result of a single query of this type.

• For Occlusion and Timestamp queries, this returns 1.
• For PipelineStatistics queries, this returns the number of statistics flags enabled.

If the results are retrieved with WITH_AVAILABILITY enabled, then an additional element is required per query.

Trait Implementations

impl Clone for QueryType

fn clone(&self) -> QueryType

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for QueryType

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<&QueryType> for QueryType

fn from(value: &QueryType) -> Self

Converts to this type from the input type.