sf: compare current FB and layer stack params for FB resolution change

Change-Id: I75a452004f5632f49900648fbe1d851bcc358328
CRs-Fixed: 3171148

1 files changed, 8 insertions, 12 deletions

diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 04b49325d2..80b92b2aa5 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -4003,33 +4003,29 @@ void SurfaceFlinger::setFrameBufferSizeForScaling(sp<DisplayDevice> displayDevic
     auto display = displayDevice->getCompositionDisplay();
     int newWidth = currentState.layerStackSpaceRect.width();
     int newHeight = currentState.layerStackSpaceRect.height();
-    int currentWidth = drawingState.layerStackSpaceRect.width();
-    int currentHeight = drawingState.layerStackSpaceRect.height();
     int displayWidth = displayDevice->getWidth();
     int displayHeight = displayDevice->getHeight();
-    bool update_needed = false;
 
-    if (newWidth != currentWidth || newHeight != currentHeight) {
-        update_needed = true;
+    if (newWidth != displayWidth || newHeight != displayHeight) {
         if (!((newWidth > newHeight && displayWidth > displayHeight) ||
             (newWidth < newHeight && displayWidth < displayHeight))) {
             std::swap(newWidth, newHeight);
         }
     }
 
-    if (displayDevice->getWidth() == newWidth && displayDevice->getHeight() == newHeight &&
-        !update_needed) {
-        displayDevice->setProjection(currentState.orientation, currentState.layerStackSpaceRect,
-                                     currentState.orientedDisplaySpaceRect);
-        return;
-    }
-
     if (newWidth > 0 && newHeight > 0) {
         currentState.width =  newWidth;
         currentState.height = newHeight;
     }
+
     currentState.orientedDisplaySpaceRect =  currentState.layerStackSpaceRect;
 
+    if (displayWidth == newWidth && displayHeight == newHeight) {
+        displayDevice->setProjection(currentState.orientation, currentState.layerStackSpaceRect,
+                                     currentState.orientedDisplaySpaceRect);
+        return;
+    }
+
     if (mBootStage == BootStage::FINISHED) {
         displayDevice->setDisplaySize(currentState.width, currentState.height);
         displayDevice->setProjection(currentState.orientation, currentState.layerStackSpaceRect,