Webview overlay support

The basic idea is to create a child surface control from the root surface control passed from ViewRootImpl to the render thread.

Transactions are sent back to the java layer to get merged.

In case of offscreen layers, SurfaceControl must be disabled.

This new feature is disabled for Vulkan at the moment, a new CL will be used to enable the support.

Bug: 173671170
Test: manual, webview apks
Change-Id: I119405d13eca3c59fd3ec78e50dc7739f78411d4

1 files changed, 6 insertions, 0 deletions

diff --git a/libs/hwui/renderthread/RenderProxy.cpp b/libs/hwui/renderthread/RenderProxy.cpp
index 9361abd20852..1b4b4b999f68 100644
--- a/libs/hwui/renderthread/RenderProxy.cpp
+++ b/libs/hwui/renderthread/RenderProxy.cpp
@@ -295,6 +295,12 @@ void RenderProxy::setPictureCapturedCallback(
             [this, cb = callback]() { mContext->setPictureCapturedCallback(cb); });
 }
 
+void RenderProxy::setASurfaceTransactionCallback(
+        const std::function<void(int64_t, int64_t, int64_t)>& callback) {
+    mRenderThread.queue().post(
+            [this, cb = callback]() { mContext->setASurfaceTransactionCallback(cb); });
+}
+
 void RenderProxy::setFrameCallback(std::function<void(int64_t)>&& callback) {
     mDrawFrameTask.setFrameCallback(std::move(callback));
 }