| 22 | } |
| 23 | |
| 24 | export function beginQueryAndGetPrevMs(manager: IQueryManager, name: string): number | null { |
| 25 | if (!manager.ctx.ext.disjointTimerQuery) { |
| 26 | return null; |
| 27 | } |
| 28 | |
| 29 | let existing = manager.queries.get(name); |
| 30 | if (!existing) { |
| 31 | let query = manager.ctx.gl.createQuery()!; |
| 32 | manager.queries.set(name, existing = { query, hasRun: false, hasStarted: false }); |
| 33 | } |
| 34 | |
| 35 | let resultAvailable = false |
| 36 | if (existing.hasRun) { |
| 37 | resultAvailable = manager.ctx.gl.getQueryParameter(existing.query, manager.ctx.gl.QUERY_RESULT_AVAILABLE); |
| 38 | } |
| 39 | |
| 40 | let resultMs: number | null = null; |
| 41 | |
| 42 | if (resultAvailable) { |
| 43 | let timeElapsed = manager.ctx.gl.getQueryParameter(existing.query, manager.ctx.gl.QUERY_RESULT); |
| 44 | resultMs = timeElapsed / 1000000; |
| 45 | } |
| 46 | |
| 47 | if (!existing.hasRun || resultAvailable) { |
| 48 | manager.ctx.gl.beginQuery(manager.TIME_ELAPSED_EXT, existing.query); |
| 49 | existing.hasRun = true; |
| 50 | existing.hasStarted = true; |
| 51 | } |
| 52 | |
| 53 | return resultMs; |
| 54 | } |
| 55 | |
| 56 | export function endQuery(manager: IQueryManager, name: string) { |
| 57 | if (!manager.ctx.ext.disjointTimerQuery) { |