commit bf434114cbf55b216fdc76fc8d65a75e84c9dab5
author Romain Guy <romainguy@google.com> Thu Sep 16 14:40:17 2010 -0700
committer Romain Guy <romainguy@google.com> Thu Sep 16 14:40:17 2010 -0700
tree 5ad5f0411e6b804c264bed8927a9786a1942719c
parent b025b9c8b4efefadb01937db61a1f8ee7d2452bf

Snap layer bounds to pixel boundaries.

Change-Id: I272ceebf469a119f01ea9d73cdd68519afdffa99

libs/hwui/OpenGLRenderer.cpp

diff --git a/libs/hwui/OpenGLRenderer.cpp b/libs/hwui/OpenGLRenderer.cpp
index 670d049..d6c0053 100644
--- a/libs/hwui/OpenGLRenderer.cpp
+++ b/libs/hwui/OpenGLRenderer.cpp
@@ -353,6 +353,8 @@
 
     // Layers only make sense if they are in the framebuffer's bounds
     bounds.intersect(*mSnapshot->clipRect);
+    bounds.snapToPixelBoundaries();
+
     if (bounds.isEmpty() || bounds.getWidth() > mMaxTextureSize ||
             bounds.getHeight() > mMaxTextureSize) {
         return false;

libs/hwui/Rect.h

diff --git a/libs/hwui/Rect.h b/libs/hwui/Rect.h
index 6b22c2b..5166ee9 100644
--- a/libs/hwui/Rect.h
+++ b/libs/hwui/Rect.h
@@ -148,6 +148,13 @@
         return false;
     }
 
+    void snapToPixelBoundaries() {
+        left = floor(left);
+        top = floor(top);
+        right = ceil(right);
+        bottom = ceil(bottom);
+    }
+
     void dump() const {
         LOGD("Rect[l=%f t=%f r=%f b=%f]", left, top, right, bottom);
     }