commit 631582f7f7a3c879a5fba81f2bc082e4826758aa
author Romain Guy <romainguy@google.com> Wed Aug 24 11:51:35 2011 -0700
committer Romain Guy <romainguy@google.com> Wed Aug 24 11:51:35 2011 -0700
tree 20cfea489e2f22d08104ea3a7391f596df43beb4
parent 6816972eb69ee8b294553dac92b3c1ad5b1ca1f7

Enable linear filter when scaling bitmaps
Bug #5205673

Change-Id: I8b0f90877df6b6c6757d35dcf6cd14e79e840b96

libs/hwui/OpenGLRenderer.cpp

diff --git a/libs/hwui/OpenGLRenderer.cpp b/libs/hwui/OpenGLRenderer.cpp
index e89d6ec..04f3c58 100644
--- a/libs/hwui/OpenGLRenderer.cpp
+++ b/libs/hwui/OpenGLRenderer.cpp
@@ -1493,7 +1493,8 @@
         const float y = (int) floorf(dstTop + mSnapshot->transform->getTranslateY() + 0.5f);
 
         GLenum filter = GL_NEAREST;
-        if (u1 > 0.0f || u2 < 1.0f || v1 > 0.0f || v2 < 1.0f) {
+        // Enable linear filtering if the source rectangle is scaled
+        if (srcRight - srcLeft != dstRight - dstLeft || srcBottom - srcTop != dstBottom - dstTop) {
             filter = GL_LINEAR;
         }
         texture->setFilter(filter, filter, true);