Only preload egl context

  - The buffer allocator initialization is removed from this flag
as it is caused a memory regression b/384876428
on activities without ui.
  - This change allows us to claw back some of the improvement
and we can follow up with further optimizations afterwards

impact: improves app launch latency in low core devices
  - ~20ms in our view baed app launch
  - up to ~60ms improvements in material3 compose app
  - net neutral memory change

Test: build and app launch test
Bug: 383612849
Flag: com.android.graphics.hwui.flags.early_preload_gl_context
Change-Id: I3009dcf7f9ec86e908cd65239974be208ad6b918

1 files changed, 5 insertions, 4 deletions

diff --git a/libs/hwui/renderthread/RenderThread.cpp b/libs/hwui/renderthread/RenderThread.cpp
index 69fe40c755ea..6ab8e4e0e2ab 100644
--- a/libs/hwui/renderthread/RenderThread.cpp
+++ b/libs/hwui/renderthread/RenderThread.cpp
@@ -323,6 +323,7 @@ void RenderThread::initGrContextOptions(GrContextOptions& options) {
 }
 
 void RenderThread::destroyRenderingContext() {
+    ATRACE_CALL();
     mFunctorManager.onContextDestroyed();
     if (Properties::getRenderPipelineType() == RenderPipelineType::SkiaGL) {
         if (mEglManager->hasEglContext()) {
@@ -520,7 +521,10 @@ void RenderThread::preload() {
     // EGL driver is always preloaded only if HWUI renders with GL.
     if (Properties::getRenderPipelineType() == RenderPipelineType::SkiaGL) {
         if (Properties::earlyPreloadGlContext()) {
-            queue().post([this]() { requireGlContext(); });
+            queue().post([this]() {
+                ATRACE_NAME("earlyPreloadGlContext");
+                requireGlContext();
+            });
         } else {
             std::thread eglInitThread([]() { eglGetDisplay(EGL_DEFAULT_DISPLAY); });
             eglInitThread.detach();
@@ -528,9 +532,6 @@ void RenderThread::preload() {
     } else {
         requireVkContext();
     }
-    if (Properties::earlyPreloadGlContext()) {
-        queue().post([]() { GraphicBufferAllocator::getInstance(); });
-    }
     HardwareBitmapUploader::initialize();
 }