Constructor
new WebGLTimestampQueryPool( gl : WebGLRenderingContext | WebGL2RenderingContext, type : string, maxQueries : number )
Creates a new WebGL timestamp query pool.
| gl |
The WebGL context. |
| type |
The type identifier for this query pool. |
| maxQueries |
Maximum number of queries this pool can hold. Default is |
Methods
.allocateQueriesForContext( uid : string ) : number
Allocates a pair of queries for a given render context.
| uid |
A unique identifier for the render context. |
- Overrides: TimestampQueryPool#allocateQueriesForContext
- Returns: The base offset for the allocated queries, or null if allocation failed.
.beginQuery( uid : string )
Begins a timestamp query for the specified render context.
| uid |
A unique identifier for the render context. |
.dispose()
Releases all resources held by this query pool. This includes deleting all query objects and clearing internal state.
- Overrides: TimestampQueryPool#dispose
.endQuery( uid : string )
Ends the active timestamp query for the specified render context.
| uid |
A unique identifier for the render context. |
.resolveQueriesAsync() : Promise.<number> (async)
Asynchronously resolves all completed queries and returns the total duration.
- Overrides: TimestampQueryPool#resolveQueriesAsync
- Returns: The total duration in milliseconds, or the last valid value if resolution fails.
.resolveQuery( query : WebGLQuery ) : Promise.<number> (async)
Resolves a single query, checking for completion and disjoint operation.
| query |
The query object to resolve. |
- Returns: The elapsed time in milliseconds.
Source
src/renderers/webgl-fallback/utils/WebGLTimestampQueryPool.js