Fix 20s first frame rendering on LazyList benchmark (#5192)

Fixes [CMP-7195](https://youtrack.jetbrains.com/issue/CMP-7195/Strange-behaviour-of-AnimatedVisibility-and-LazyList-benchmarks)
JetBrains · Dec 19, 2024 · 71e0b05 · 71e0b05
1 parent 7ddb0a7
commit 71e0b05
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/benchmarks/multiplatform/benchmarks/src/commonMain/kotlin/MeasureComposable.kt b/benchmarks/multiplatform/benchmarks/src/commonMain/kotlin/MeasureComposable.kt
@@ -56,17 +56,22 @@ suspend fun measureComposable(
         // warmup
         repeat(warmupCount) {
             scene.render(canvas, it * nanosPerFrame)
+            surface.flushAndSubmit(false)
         }
 
+        graphicsContext?.awaitGPUCompletion()
+
         runGC()
 
         var renderTime = Duration.ZERO
         if (Args.isModeEnabled(Mode.CPU)) {
             renderTime = measureTime {
                 repeat(frameCount) {
                     scene.render(canvas, it * nanosPerFrame)
+                    surface.flushAndSubmit(false)
                 }
             }
+            graphicsContext?.awaitGPUCompletion()
         }
 
         val frames = MutableList(frameCount) {