[cairo-commit] test/Makefile.sources test/paint-with-alpha-group-clip.c test/reference

[Adrian Johnson]

 test/Makefile.sources                              |    1 
 test/paint-with-alpha-group-clip.c                 |   62 +++++++++++++++++++++
 test/reference/paint-with-alpha-group-clip.ref.png |binary
 3 files changed, 63 insertions(+)

New commits:
commit 2974416dfc56e1b3a59001e482679f8601abd7d5
Author: Adrian Johnson <ajohnson at redneon.com>
Date:   Thu Dec 26 17:18:41 2013 +1030

    Add test for paint with alpha and clipping bug
    
    Add test case for https://bugs.freedesktop.org/show_bug.cgi?id=68382
    
    Something has regressed in the recording surface. All the recording
    surface based backends lose the alpha from the paint_With_alpha.

diff --git a/test/Makefile.sources b/test/Makefile.sources
index 5319ee4..534a426 100644
--- a/test/Makefile.sources
+++ b/test/Makefile.sources
@@ -239,6 +239,7 @@ test_sources = \
 	paint-repeat.c					\
 	paint-source-alpha.c				\
 	paint-with-alpha.c				\
+	paint-with-alpha-group-clip.c			\
 	partial-clip-text.c				\
 	partial-coverage.c				\
 	pass-through.c					\
diff --git a/test/paint-with-alpha-group-clip.c b/test/paint-with-alpha-group-clip.c
new file mode 100644
index 0000000..7be47b2
--- /dev/null
+++ b/test/paint-with-alpha-group-clip.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright © 2013 Adrian Johnson
+ *
+ * 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
+ * Red Hat, Inc. not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. Red Hat, Inc. makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL RED HAT, INC. 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: Adrian Johnson <ajohnson at redneon.com>
+ */
+
+/*
+ * This attempts to exercise the bug found in
+ *
+ * https://bugs.launchpad.net/inkscape/+bug/1258265
+ */
+
+
+#include "cairo-test.h"
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    cairo_path_t *path;
+
+    cairo_set_source_rgb (cr, 1, 1, 1);
+    cairo_paint (cr);
+
+    cairo_push_group (cr);
+    cairo_push_group (cr);
+    cairo_set_source_rgb (cr, 0, 0, 0);
+    cairo_paint (cr);
+    cairo_pop_group_to_source (cr);
+    cairo_paint_with_alpha (cr, 0.25);
+    cairo_pop_group_to_source (cr);
+    cairo_rectangle (cr, 5, 5, 20, 20);
+    cairo_clip (cr);
+    cairo_paint (cr);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (paint_with_alpha_group_clip,
+	    "Test paint with alpha and clipping",
+	    "paint alpha clip group record", /* keywords */
+	    NULL, /* requirements */
+	    30, 30,
+	    NULL, draw)
diff --git a/test/reference/paint-with-alpha-group-clip.ref.png b/test/reference/paint-with-alpha-group-clip.ref.png
new file mode 100644
index 0000000..e2dfb06
Binary files /dev/null and b/test/reference/paint-with-alpha-group-clip.ref.png differ