fix bug and add test for aaclip when blitV is called

git-svn-id: http://skia.googlecode.com/svn/trunk@3281 2bbb7eff-a529-9590-31e7-b0007b416f81

2 files changed, 16 insertions, 0 deletions

diff --git a/src/core/SkAAClip.cpp b/src/core/SkAAClip.cpp
index 9a0223d231..64c27284a4 100644
--- a/src/core/SkAAClip.cpp
+++ b/src/core/SkAAClip.cpp
@@ -1187,6 +1187,7 @@ public:
     virtual void blitV(int x, int y, int height, SkAlpha alpha) SK_OVERRIDE {
         this->recordMinY(y);
         fBuilder->addColumn(x, y, alpha, height);
+        fLastY = y + height - 1;
     }
 
     virtual void blitRect(int x, int y, int width, int height) SK_OVERRIDE {
diff --git a/tests/AAClipTest.cpp b/tests/AAClipTest.cpp
index 194b92680c..4f3f7597f9 100644
--- a/tests/AAClipTest.cpp
+++ b/tests/AAClipTest.cpp
@@ -313,12 +313,27 @@ static void test_path_with_hole(skiatest::Reporter* reporter) {
     }
 }
 
+static void test_regressions(skiatest::Reporter* reporter) {
+    // these should not assert in the debug build
+    // bug was introduced in rev. 3209
+    {
+        SkAAClip clip;
+        SkRect r;
+        r.fLeft = SkFloatToScalar(129.892181);
+        r.fTop = SkFloatToScalar(10.3999996);
+        r.fRight = SkFloatToScalar(130.892181); 
+        r.fBottom = SkFloatToScalar(20.3999996);
+        clip.setRect(r, true);
+    }
+}
+
 static void TestAAClip(skiatest::Reporter* reporter) {
     test_empty(reporter);
     test_path_bounds(reporter);
     test_irect(reporter);
     test_rgn(reporter);
     test_path_with_hole(reporter);
+    test_regressions(reporter);
 }
 
 #include "TestClassDef.h"