Bug 715894 - Only draw dirty rect when using gralloc textures r=clord

--HG--
extra : rebase_source : 432da0c53ce697b6bbc8009c615e9bfb81f0778f

widget/android/nsWindow.cpp

@@ -1203,7 +1203,7 @@ nsWindow::OnDraw(AndroidGeckoEvent *ae)
         sDirectTexture->Reallocate(gAndroidBounds.width, gAndroidBounds.height);
       }
 
-      sDirectTexture->Lock(AndroidGraphicBuffer::UsageSoftwareWrite, &bits);
+      sDirectTexture->Lock(AndroidGraphicBuffer::UsageSoftwareWrite, ae->Rect(), &bits);
     } else {
       bits = client.LockBufferBits();
     }
@@ -1234,17 +1234,12 @@ nsWindow::OnDraw(AndroidGeckoEvent *ae)
                     ALOG("### Failed to create a valid surface from the bitmap");
                     drawSuccess = false;
                     break;
-                } else {
-                    if (sHasDirectTexture) {
-                        // XXX: lock only the dirty rect above and pass it in here
-                        DrawTo(targetSurface);
                 } else {
                     targetSurface->SetDeviceOffset(gfxPoint(-x, -y));
                     DrawTo(targetSurface, ae->Rect());
                 }
             }
         }
-        }
 
         // Don't fill in the draw metadata on an unsuccessful draw
         if (drawSuccess && metadataProvider) {