commit 89f5d4ebf7ba08e4f655550623fb5d78aa638f28
author Alec Mouri <alecmouri@google.com> Fri Oct 20 17:12:49 2023 +0000
committer Alec Mouri <alecmouri@google.com> Wed Nov 01 21:29:59 2023 +0000
tree f9925efd3198efd8d8cfccdfd67f3ef28c35bc7a
parent 14bebe0a3e3f9af775253d7b769641dae9b5b165

Front buffered layers vote for max

...because all known use-cases for beam racing want low latency which
implies clocking the display to max

Bug: 305997105
Test: libsurfaceflinger_unittest
Test: test app with front buffered layers + youtube pip stays at max
Change-Id: Ibe33d4b43ea4943874f104409e3bc247f00cae33

services/surfaceflinger/SurfaceFlinger.cpp

diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 62eb17d..d5e1f53 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -2247,6 +2247,7 @@
                 .setFrameRateVote = snapshot->frameRate,
                 .frameRateSelectionPriority = snapshot->frameRateSelectionPriority,
                 .isSmallDirty = snapshot->isSmallDirty,
+                .isFrontBuffered = snapshot->isFrontBuffered(),
         };
 
         if (snapshot->clientChanges & layer_state_t::eDefaultFrameRateCompatibilityChanged) {
@@ -4880,6 +4881,7 @@
                         .transform = layer->getTransform(),
                         .setFrameRateVote = layer->getFrameRateForLayerTree(),
                         .frameRateSelectionPriority = layer->getFrameRateSelectionPriority(),
+                        .isFrontBuffered = layer->isFrontBuffered(),
                 };
                 layer->recordLayerHistoryAnimationTx(layerProps, now);
             }