SF: Add GL texture pool
Adds a pool of GL texture names.
Prior to this change, Layer creation was forced to run on the SF main
thread because it would need to call into RenderEngine to generate a new
texture name.
By creating a pool of pre-generated texture names, this operation no
longer needs to run on the main thread, which unblocks the rest of the
system during operations such as fingerprint unlock.
Bug: 110477323
Test: SurfaceFlinger_test + manual: examine systrace and observe that
layer creation no longer blocks on access to the main thread
Change-Id: I9d68874d6c6f704c8884676454e84d916cd86507
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index fb94058..4baf56c 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -297,6 +297,11 @@
*/
virtual bool isFixedSize() const { return true; }
+ // Most layers aren't created from the main thread, and therefore need to
+ // grab the SF state lock to access HWC, but ContainerLayer does, so we need
+ // to avoid grabbing the lock again to avoid deadlock
+ virtual bool isCreatedFromMainThread() const { return false; }
+
bool isPendingRemoval() const { return mPendingRemoval; }