test: Add test case for tracking source operator extents

6 files changed, 82 insertions, 0 deletions

diff --git a/test/Makefile.sources b/test/Makefile.sources
index 61fa7078..025790fd 100644
--- a/test/Makefile.sources
+++ b/test/Makefile.sources
@@ -26,6 +26,7 @@ test_sources = \
 	bug-40410.c					\
 	bug-bo-rectangular.c				\
 	bug-bo-ricotz.c					\
+	bug-source-cu.c					\
 	bug-extents.c					\
 	bug-seams.c					\
 	caps.c						\
diff --git a/test/bug-source-cu.c b/test/bug-source-cu.c
new file mode 100644
index 00000000..4c1e2bc6
--- /dev/null
+++ b/test/bug-source-cu.c
@@ -0,0 +1,81 @@
+/*
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "cairo-test.h"
+
+static cairo_pattern_t *
+create_pattern (cairo_surface_t *target)
+{
+    cairo_surface_t *surface;
+    cairo_pattern_t *pattern;
+    cairo_t *cr;
+    cairo_matrix_t m;
+
+    surface = cairo_surface_create_similar(target,
+					   cairo_surface_get_content (target),
+					   1000, 600);
+    cr = cairo_create (surface);
+    cairo_surface_destroy (surface);
+
+    cairo_set_source_rgb (cr, 0, 1, 0);
+    cairo_paint(cr);
+
+    pattern = cairo_pattern_create_for_surface (cairo_get_target (cr));
+    cairo_destroy(cr);
+
+    cairo_matrix_init_translate (&m, 0, 0.1); // y offset must be non-integer
+    cairo_pattern_set_matrix (pattern, &m);
+    return pattern;
+}
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    cairo_pattern_t *pattern;
+
+    cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+
+    cairo_set_source_rgb (cr, 1, 0, 0);
+    cairo_paint (cr);
+
+    cairo_new_path (cr);
+    cairo_move_to (cr, 10, 400.1);
+    cairo_line_to (cr, 990, 400.1);
+    cairo_line_to (cr, 990, 600);
+    cairo_line_to (cr, 10,  600);
+    cairo_close_path (cr);
+
+    pattern = create_pattern (cairo_get_target (cr));
+    cairo_set_source (cr, pattern);
+    cairo_pattern_destroy (pattern);
+
+    cairo_fill(cr);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (bug_source_cu,
+	    "Exercises a bug discovered in the tracking of unbounded source extents",
+	    "fill", /* keywords */
+	    NULL, /* requirements */
+	    1000, 600,
+	    NULL, draw)
diff --git a/test/reference/bug-source-cu.argb32.ref.png b/test/reference/bug-source-cu.argb32.ref.png
new file mode 100644
index 00000000..808feb5f
--- /dev/null
+++ b/test/reference/bug-source-cu.argb32.ref.png
diff --git a/test/reference/bug-source-cu.rgb24.ref.png b/test/reference/bug-source-cu.rgb24.ref.png
new file mode 100644
index 00000000..6cf2b1a3
--- /dev/null
+++ b/test/reference/bug-source-cu.rgb24.ref.png
diff --git a/test/reference/bug-source-cu.traps.argb32.ref.png b/test/reference/bug-source-cu.traps.argb32.ref.png
new file mode 100644
index 00000000..d8837c30
--- /dev/null
+++ b/test/reference/bug-source-cu.traps.argb32.ref.png
diff --git a/test/reference/bug-source-cu.traps.rgb24.ref.png b/test/reference/bug-source-cu.traps.rgb24.ref.png
new file mode 100644
index 00000000..75e3b326
--- /dev/null
+++ b/test/reference/bug-source-cu.traps.rgb24.ref.png