Test blur small radii and text.

BUG=chromium:745290

Change-Id: I78cabf988115598e14a7ce39faf96e3a697a1a8f
Reviewed-on: https://skia-review.googlesource.com/34382
Commit-Queue: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Klein <mtklein@chromium.org>

1 files changed, 28 insertions, 0 deletions

diff --git a/gm/blurtextsmallradii.cpp b/gm/blurtextsmallradii.cpp
new file mode 100644
index 0000000000..610338144c
--- /dev/null
+++ b/gm/blurtextsmallradii.cpp
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2017 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "gm.h"
+#include "SkBlurMaskFilter.h"
+#include "SkColor.h"
+
+// GM to check the behavior from chrome bug:745290
+DEF_SIMPLE_GM(blurSmallRadii, canvas, 100, 100) {
+    double sigmas[] = {0.5, 0.75, 1.0, 1.5, 2.5};
+    SkPaint paint;
+
+    for (auto sigma : sigmas) {
+        paint.setColor(SK_ColorBLACK);
+        paint.setAntiAlias(true);
+        paint.setMaskFilter(SkBlurMaskFilter::Make(kNormal_SkBlurStyle, sigma));
+        canvas->drawString("Guest", 20, 10, paint);
+
+        paint.setMaskFilter(nullptr);
+        paint.setColor(SK_ColorWHITE);
+        canvas->drawString("Guest", 20, 10, paint);
+        canvas->translate(0, 20);
+    }
+}