performance increase by not drawing on do nothing frames

Change-Id: Ibcd4f0ed468563b22e29d23c7d72b474534d21f3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/299916
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Jorge Betancourt <jmbetancourt@google.com>

platform_tools/android/apps/skottie/skottielib/src/main/cpp/native-lib.cpp

diff --git a/platform_tools/android/apps/skottie/skottielib/src/main/cpp/native-lib.cpp b/platform_tools/android/apps/skottie/skottielib/src/main/cpp/native-lib.cpp
index 5e384c7..8c32a07 100644
--- a/platform_tools/android/apps/skottie/skottielib/src/main/cpp/native-lib.cpp
+++ b/platform_tools/android/apps/skottie/skottielib/src/main/cpp/native-lib.cpp
@@ -23,6 +23,7 @@
 #include "include/gpu/gl/GrGLTypes.h"
 
 #include "modules/skottie/include/Skottie.h"
+#include "modules/sksg/include/SkSGInvalidationController.h"
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
@@ -191,6 +192,15 @@
         return;
     }
 
+    sksg::InvalidationController ic;
+
+    if (skottieAnimation->mAnimation) {
+        skottieAnimation->mAnimation->seek(progress, &ic);
+        if (ic.bounds().isEmpty()) {
+            return;
+        }
+    }
+
     SkColorType colorType;
     // setup surface for fbo0
     GrGLFramebufferInfo fboInfo;
@@ -212,13 +222,10 @@
 
     auto canvas = renderTarget->getCanvas();
     canvas->clear(SK_ColorTRANSPARENT);
-    if (skottieAnimation->mAnimation) {
-        skottieAnimation->mAnimation->seek(progress);
 
-        SkAutoCanvasRestore acr(canvas, true);
-        SkRect bounds = SkRect::MakeWH(width, height);
-        skottieAnimation->mAnimation->render(canvas, &bounds);
-    }
+    SkAutoCanvasRestore acr(canvas, true);
+    SkRect bounds = SkRect::MakeWH(width, height);
+    skottieAnimation->mAnimation->render(canvas, &bounds);
 
     canvas->flush();
 }