regression unittest for the fix in rev. 3558 (handling nan in antihairpaths)
git-svn-id: http://skia.googlecode.com/svn/trunk@3562 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tests/DrawBitmapRectTest.cpp b/tests/DrawBitmapRectTest.cpp
index 843feb5..e5b4463 100644
--- a/tests/DrawBitmapRectTest.cpp
+++ b/tests/DrawBitmapRectTest.cpp
@@ -9,6 +9,28 @@
#include "SkBitmap.h"
#include "SkCanvas.h"
+static void test_nan_antihair(skiatest::Reporter* reporter) {
+ SkBitmap bm;
+ bm.setConfig(SkBitmap::kARGB_8888_Config, 20, 20);
+ bm.allocPixels();
+
+ SkCanvas canvas(bm);
+
+ SkPath path;
+ path.moveTo(0, 0);
+ path.lineTo(10, SK_ScalarNaN);
+
+ SkPaint paint;
+ paint.setAntiAlias(true);
+ paint.setStyle(SkPaint::kStroke_Style);
+
+ // before our fix to SkScan_Antihair.cpp to check for integral NaN (0x800...)
+ // this would trigger an assert/crash.
+ //
+ // see rev. 3558
+ canvas.drawPath(path, paint);
+}
+
static bool check_for_all_zeros(const SkBitmap& bm) {
SkAutoLockPixels alp(bm);
@@ -48,6 +70,8 @@
// ensure that we draw nothing if srcR does not intersect the bitmap
REPORTER_ASSERT(reporter, check_for_all_zeros(dst));
+
+ test_nan_antihair(reporter);
}
#include "TestClassDef.h"