[cairo-commit] test/large-source-roi.c test/large-source-roi.ref.png test/Makefile.am

[M. Joonas Pihlaja]

 test/Makefile.am              |    2 +
 test/large-source-roi.c       |   64 ++++++++++++++++++++++++++++++++++++++++++
 test/large-source-roi.ref.png |binary
 3 files changed, 66 insertions(+)

New commits:
commit 8157bc8a2dc0d555606d19ad52ae7a603471edd6
Author: M Joonas Pihlaja <jpihlaja at cc.helsinki.fi>
Date:   Sun Jan 4 04:14:28 2009 +0200

    [test] Stress test using large source images.
    
    This test attempts to trigger failures in those backend clone_similar
    methods that have size restrictions on the resulting image.  It also
    triggers errors in scaling down large image surfaces as the image
    backend also fails this test.

diff --git a/test/Makefile.am b/test/Makefile.am
index 6aa0b8e..3c0972c 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -94,6 +94,7 @@ test_sources = \
 	large-clip.c					\
 	large-font.c					\
 	large-source.c					\
+	large-source-roi.c				\
 	leaky-dash.c					\
 	leaky-dashed-rectangle.c			\
 	leaky-dashed-stroke.c				\
@@ -622,6 +623,7 @@ REFERENCE_IMAGES = \
 	large-clip.ref.png	\
 	large-font.ref.png	\
 	large-source.ref.png	\
+	large-source-roi.ref.png	\
 	leaky-dash.ps2.argb32.ref.png	\
 	leaky-dash.ps3.argb32.ref.png	\
 	leaky-dash.ps2.rgb24.ref.png	\
diff --git a/test/large-source-roi.c b/test/large-source-roi.c
new file mode 100644
index 0000000..097390f
--- /dev/null
+++ b/test/large-source-roi.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright © 2009 Joonas Pihlaja
+ *
+ * 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 the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS 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.
+ */
+
+#include "cairo-test.h"
+
+/* This test attempts to trigger failures in those clone_similar
+ * backend methods that have size restrictions. */
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    cairo_surface_t *source;
+    double source_width = 66000.0;
+
+    cairo_set_source_rgb (cr, 1,1,1);
+    cairo_paint (cr);
+
+    /* Create an excessively wide source image, all red. */
+    source = cairo_image_surface_create (CAIRO_FORMAT_RGB24, source_width, height);
+    {
+	cairo_t *cr2 = cairo_create (source);
+	cairo_set_source_rgb (cr2, 1,0,0); /* red */
+	cairo_paint (cr2);
+	cairo_destroy (cr2);
+    }
+
+    /* Set a transform so that the source is scaled down to fit in the
+     * destination horizontally and then paint the entire source to
+     * the context. */
+    cairo_scale (cr, width/source_width, 1.0);
+    cairo_set_source_surface (cr, source, 0, 0);
+    cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+    cairo_paint (cr);
+
+    cairo_surface_destroy (source);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (large_source_roi,
+	    "Uses a all of a large source image.",
+	    "stress, source", /* keywords */
+	    NULL, /* requirements */
+	    20, 20,
+	    NULL, draw)
diff --git a/test/large-source-roi.ref.png b/test/large-source-roi.ref.png
new file mode 100644
index 0000000..7192a6e
Binary files /dev/null and b/test/large-source-roi.ref.png differ