Implement full View.buildLayer

 Bug: 17152292

Change-Id: Ia3cc2aadf72fe14517f50762fc634794df51ad5a

4 files changed, 37 insertions, 0 deletions

diff --git a/libs/hwui/renderthread/CanvasContext.cpp b/libs/hwui/renderthread/CanvasContext.cpp
index e673b0d..5922135 100644
--- a/libs/hwui/renderthread/CanvasContext.cpp
+++ b/libs/hwui/renderthread/CanvasContext.cpp
@@ -244,6 +244,29 @@ void CanvasContext::invokeFunctor(RenderThread& thread, Functor* functor) {
     thread.renderState().invokeFunctor(functor, mode, NULL);
 }
 
+void CanvasContext::buildLayer(RenderNode* node) {
+    ATRACE_CALL();
+    if (!mEglManager.hasEglContext() || !mCanvas) {
+        return;
+    }
+    requireGlContext();
+    // buildLayer() will leave the tree in an unknown state, so we must stop drawing
+    stopDrawing();
+
+    TreeInfo info(TreeInfo::MODE_FULL, mRenderThread.renderState());
+    info.frameTimeMs = mRenderThread.timeLord().frameTimeMs();
+    info.damageAccumulator = &mDamageAccumulator;
+    info.renderer = mCanvas;
+    node->prepareTree(info);
+    SkRect ignore;
+    mDamageAccumulator.finish(&ignore);
+    // Tickle the GENERIC property on node to mark it as dirty for damaging
+    // purposes when the frame is actually drawn
+    node->setPropertyFieldsDirty(RenderNode::GENERIC);
+
+    mCanvas->flushLayerUpdates();
+}
+
 bool CanvasContext::copyLayerInto(DeferredLayerUpdater* layer, SkBitmap* bitmap) {
     requireGlContext();
     layer->apply();
diff --git a/libs/hwui/renderthread/CanvasContext.h b/libs/hwui/renderthread/CanvasContext.h
index 2a01027..0cbed6f 100644
--- a/libs/hwui/renderthread/CanvasContext.h
+++ b/libs/hwui/renderthread/CanvasContext.h
@@ -65,6 +65,7 @@ public:
     // IFrameCallback, Chroreographer-driven frame callback entry point
     virtual void doFrame();
 
+    void buildLayer(RenderNode* node);
     bool copyLayerInto(DeferredLayerUpdater* layer, SkBitmap* bitmap);
 
     void destroyHardwareResources();
diff --git a/libs/hwui/renderthread/RenderProxy.cpp b/libs/hwui/renderthread/RenderProxy.cpp
index d9b96f6..405ce24 100644
--- a/libs/hwui/renderthread/RenderProxy.cpp
+++ b/libs/hwui/renderthread/RenderProxy.cpp
@@ -284,6 +284,18 @@ DeferredLayerUpdater* RenderProxy::createTextureLayer() {
     return layer;
 }
 
+CREATE_BRIDGE2(buildLayer, CanvasContext* context, RenderNode* node) {
+    args->context->buildLayer(args->node);
+    return NULL;
+}
+
+void RenderProxy::buildLayer(RenderNode* node) {
+    SETUP_TASK(buildLayer);
+    args->context = mContext;
+    args->node = node;
+    postAndWait(task);
+}
+
 CREATE_BRIDGE3(copyLayerInto, CanvasContext* context, DeferredLayerUpdater* layer,
         SkBitmap* bitmap) {
     bool success = args->context->copyLayerInto(args->layer, args->bitmap);
diff --git a/libs/hwui/renderthread/RenderProxy.h b/libs/hwui/renderthread/RenderProxy.h
index 28d0173..eea3674 100644
--- a/libs/hwui/renderthread/RenderProxy.h
+++ b/libs/hwui/renderthread/RenderProxy.h
@@ -81,6 +81,7 @@ public:
     static void enqueueDestroyLayer(Layer* layer);
     ANDROID_API DeferredLayerUpdater* createDisplayListLayer(int width, int height);
     ANDROID_API DeferredLayerUpdater* createTextureLayer();
+    ANDROID_API void buildLayer(RenderNode* node);
     ANDROID_API bool copyLayerInto(DeferredLayerUpdater* layer, SkBitmap* bitmap);
     ANDROID_API void pushLayerUpdate(DeferredLayerUpdater* layer);
     ANDROID_API void cancelLayerUpdate(DeferredLayerUpdater* layer);