inject a 32767 bounded cliprect before using SuperSampler blitter, to avoid

crash/assert when our run-array is larger than int16_t. Better fix may be to
"tile" the drawing, so we never see a clip that's too wide, and perhaps this
technique can help us avoid disabling AA for large parths (not sure tho).



git-svn-id: http://skia.googlecode.com/svn/trunk@3104 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 20 insertions, 0 deletions

diff --git a/tests/ClipCubicTest.cpp b/tests/ClipCubicTest.cpp
index 931b61e09c..491d0e5f3e 100644
--- a/tests/ClipCubicTest.cpp
+++ b/tests/ClipCubicTest.cpp
@@ -7,9 +7,27 @@
  */
 #include "Test.h"
 
+#include "SkCanvas.h"
+#include "SkPaint.h"
 #include "SkCubicClipper.h"
 #include "SkGeometry.h"
 
+// Currently the supersampler blitter uses int16_t for its index into an array
+// the width of the clip. Test that we don't crash/assert if we try to draw
+// with a device/clip that is larger.
+static void test_giantClip() {
+    SkBitmap bm;
+    bm.setConfig(SkBitmap::kARGB_8888_Config, 64919, 1);
+    bm.allocPixels();
+    SkCanvas canvas(bm);
+    canvas.clear(0);
+    
+    SkPath path;
+    path.moveTo(0, 0); path.lineTo(1, 0); path.lineTo(33, 1);
+    SkPaint paint;
+    paint.setAntiAlias(true);
+    canvas.drawPath(path, paint);
+}
 
 static void PrintCurve(const char *name, const SkPoint crv[4]) {
     printf("%s: %.10g, %.10g, %.10g, %.10g, %.10g, %.10g, %.10g, %.10g\n",
@@ -142,6 +160,8 @@ static void TestCubicClipping(skiatest::Reporter* reporter) {
         1.297736168, 7.059780121,
         2.505550385, 10,
         shouldbe), tol));
+
+    test_giantClip();
 }