1 files changed, 74 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/alpha-similar.c b/libs/cairo-1.16.0/test/alpha-similar.c
new file mode 100644
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+++ b/libs/cairo-1.16.0/test/alpha-similar.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2008 Chris Wilson
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * Chris Wilson not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. Chris Wilson makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL CHRIS WILSON BE LIABLE FOR ANY SPECIAL,
+ * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+ * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairo-test.h"
+
+static cairo_surface_t *
+create_source (cairo_surface_t *target, int width, int height)
+{
+    cairo_surface_t *similar;
+    cairo_t *cr;
+
+    similar = cairo_surface_create_similar (target,
+					    CAIRO_CONTENT_ALPHA,
+					    width, height);
+    cr = cairo_create (similar);
+    cairo_surface_destroy (similar);
+
+    cairo_set_source_rgba (cr, 1, 0, 0, .5);
+    cairo_paint (cr);
+
+    similar = cairo_surface_reference (cairo_get_target (cr));
+    cairo_destroy (cr);
+
+    return similar;
+}
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    cairo_surface_t *source;
+
+    source = create_source (cairo_get_target (cr), width, height);
+    cairo_set_source_surface (cr, source, 0, 0);
+    cairo_surface_destroy (source);
+
+    cairo_paint (cr);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+/*
+ * XFAIL: discrepancy between backends in applying color components of a pure
+ * alpha surface
+ */
+CAIRO_TEST (alpha_similar,
+	    "Tests creation of similar alpha surfaces"
+	    "\nApplication of a pure-alpha similar source is inconsistent across backends.",
+	    "alpha, similar", /* keywords */
+	    NULL, /* requirements */
+	    10, 10,
+	    NULL, draw)
+