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authorChris Wilson <chris@chris-wilson.co.uk>2009-08-05 17:54:48 +0100
committerChris Wilson <chris@chris-wilson.co.uk>2009-08-29 08:08:31 +0100
commitff0ca6d02a2e8901e9cfca31326c3fdc16e77e2f (patch)
tree28b7787bfb3ce6e555725f395cd5f48438906f4d
parent6dfe050d6360409161418d853df3d7d7dfb216af (diff)
[test] Stress the intersection handling by feeding spans/traps random curves
Another stress test for the fill/stroke and intersection finders.
-rw-r--r--test/Makefile.am10
-rw-r--r--test/Makefile.sources2
-rw-r--r--test/random-intersections-curves-eo.c81
-rw-r--r--test/random-intersections-curves-eo.pdf.ref.pngbin0 -> 246507 bytes
-rw-r--r--test/random-intersections-curves-eo.ps.ref.pngbin0 -> 151676 bytes
-rw-r--r--test/random-intersections-curves-eo.ref.pngbin0 -> 246996 bytes
-rw-r--r--test/random-intersections-curves-eo.xlib-fallback.ref.pngbin0 -> 246243 bytes
-rw-r--r--test/random-intersections-curves-eo.xlib.ref.pngbin0 -> 246243 bytes
-rw-r--r--test/random-intersections-curves-nz.c82
-rw-r--r--test/random-intersections-curves-nz.pdf.ref.pngbin0 -> 266977 bytes
-rw-r--r--test/random-intersections-curves-nz.ps.ref.pngbin0 -> 134732 bytes
-rw-r--r--test/random-intersections-curves-nz.ref.pngbin0 -> 267589 bytes
-rw-r--r--test/random-intersections-curves-nz.xlib-fallback.ref.pngbin0 -> 266364 bytes
-rw-r--r--test/random-intersections-curves-nz.xlib.ref.pngbin0 -> 266360 bytes
14 files changed, 175 insertions, 0 deletions
diff --git a/test/Makefile.am b/test/Makefile.am
index 9b5ee2a8b..ed72fc601 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -742,6 +742,16 @@ REFERENCE_IMAGES = \
random-intersections-nonzero.ref.png \
random-intersections-nonzero.ps.ref.png \
random-intersections-nonzero.xlib.ref.png \
+ random-intersections-curves-eo.ps.ref.png \
+ random-intersections-curves-eo.pdf.ref.png \
+ random-intersections-curves-eo.ref.png \
+ random-intersections-curves-eo.xlib.ref.png \
+ random-intersections-curves-eo.xlib-fallback.ref.png \
+ random-intersections-curves-nz.ps.ref.png \
+ random-intersections-curves-nz.pdf.ref.png \
+ random-intersections-curves-nz.ref.png \
+ random-intersections-curves-nz.xlib.ref.png \
+ random-intersections-curves-nz.xlib-fallback.ref.png \
rectangle-rounding-error.ref.png \
rectilinear-dash.ref.png \
rectilinear-fill.ref.png \
diff --git a/test/Makefile.sources b/test/Makefile.sources
index 0a58ac077..5494fe901 100644
--- a/test/Makefile.sources
+++ b/test/Makefile.sources
@@ -152,6 +152,8 @@ test_sources = \
radial-gradient.c \
random-intersections-eo.c \
random-intersections-nonzero.c \
+ random-intersections-curves-eo.c \
+ random-intersections-curves-nz.c \
rectangle-rounding-error.c \
rectilinear-fill.c \
rectilinear-miter-limit.c \
diff --git a/test/random-intersections-curves-eo.c b/test/random-intersections-curves-eo.c
new file mode 100644
index 000000000..3fa12b2bd
--- /dev/null
+++ b/test/random-intersections-curves-eo.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright © 2006 M Joonas Pihlaja
+ *
+ * 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.
+ *
+ * Author: M Joonas Pihlaja <jpihlaja@cc.helsinki.fi>
+ */
+#include "cairo-test.h"
+
+#define SIZE 512
+#define NUM_SEGMENTS 128
+
+static uint32_t state;
+
+static double
+uniform_random (double minval, double maxval)
+{
+ static uint32_t const poly = 0x9a795537U;
+ uint32_t n = 32;
+ while (n-->0)
+ state = 2*state < state ? (2*state ^ poly) : 2*state;
+ return minval + state * (maxval - minval) / 4294967296.0;
+}
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+ int i;
+
+ cairo_set_source_rgb (cr, 0, 0, 0);
+ cairo_paint (cr);
+
+ state = 0x12345678;
+ cairo_translate (cr, 1, 1);
+ cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
+
+ cairo_move_to (cr, 0, 0);
+ for (i = 0; i < NUM_SEGMENTS; i++) {
+ cairo_curve_to (cr,
+ uniform_random (-SIZE, SIZE),
+ uniform_random (-SIZE, SIZE),
+ uniform_random (-SIZE, SIZE),
+ uniform_random (-SIZE, SIZE),
+ uniform_random (0, SIZE),
+ uniform_random (0, SIZE));
+ }
+ cairo_close_path (cr);
+
+ cairo_set_source_rgb (cr, 1, 0, 0);
+ cairo_fill_preserve (cr);
+ cairo_set_source_rgb (cr, 0, 1, 0);
+ cairo_set_line_width (cr, 0.5);
+ cairo_stroke (cr);
+
+ return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (random_intersections_curves_eo,
+ "Tests the tessellator trapezoid generation and intersection computation",
+ "trap", /* keywords */
+ NULL, /* requirements */
+ SIZE+3, SIZE+3,
+ NULL, draw)
diff --git a/test/random-intersections-curves-eo.pdf.ref.png b/test/random-intersections-curves-eo.pdf.ref.png
new file mode 100644
index 000000000..befa3c859
--- /dev/null
+++ b/test/random-intersections-curves-eo.pdf.ref.png
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diff --git a/test/random-intersections-curves-eo.ps.ref.png b/test/random-intersections-curves-eo.ps.ref.png
new file mode 100644
index 000000000..3acd73663
--- /dev/null
+++ b/test/random-intersections-curves-eo.ps.ref.png
Binary files differ
diff --git a/test/random-intersections-curves-eo.ref.png b/test/random-intersections-curves-eo.ref.png
new file mode 100644
index 000000000..ed24e8a45
--- /dev/null
+++ b/test/random-intersections-curves-eo.ref.png
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diff --git a/test/random-intersections-curves-eo.xlib-fallback.ref.png b/test/random-intersections-curves-eo.xlib-fallback.ref.png
new file mode 100644
index 000000000..d5f48f167
--- /dev/null
+++ b/test/random-intersections-curves-eo.xlib-fallback.ref.png
Binary files differ
diff --git a/test/random-intersections-curves-eo.xlib.ref.png b/test/random-intersections-curves-eo.xlib.ref.png
new file mode 100644
index 000000000..05fc922b2
--- /dev/null
+++ b/test/random-intersections-curves-eo.xlib.ref.png
Binary files differ
diff --git a/test/random-intersections-curves-nz.c b/test/random-intersections-curves-nz.c
new file mode 100644
index 000000000..010981773
--- /dev/null
+++ b/test/random-intersections-curves-nz.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright © 2006 M Joonas Pihlaja
+ *
+ * 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.
+ *
+ * Author: M Joonas Pihlaja <jpihlaja@cc.helsinki.fi>
+ */
+#include "cairo-test.h"
+
+#define SIZE 512
+#define NUM_SEGMENTS 128
+
+static uint32_t state;
+
+static double
+uniform_random (double minval, double maxval)
+{
+ static uint32_t const poly = 0x9a795537U;
+ uint32_t n = 32;
+ while (n-->0)
+ state = 2*state < state ? (2*state ^ poly) : 2*state;
+ return minval + state * (maxval - minval) / 4294967296.0;
+}
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+ int i;
+
+ cairo_set_source_rgb (cr, 0, 0, 0);
+ cairo_paint (cr);
+
+ state = 0x12345678;
+ cairo_translate (cr, 1, 1);
+ cairo_set_fill_rule (cr, CAIRO_FILL_RULE_WINDING);
+
+ cairo_move_to (cr, 0, 0);
+ for (i = 0; i < NUM_SEGMENTS; i++) {
+ cairo_curve_to (cr,
+ uniform_random (-SIZE, SIZE),
+ uniform_random (-SIZE, SIZE),
+ uniform_random (-SIZE, SIZE),
+ uniform_random (-SIZE, SIZE),
+ uniform_random (0, SIZE),
+ uniform_random (0, SIZE));
+ }
+ cairo_close_path (cr);
+
+ cairo_set_source_rgb (cr, 1, 0, 0);
+ cairo_fill_preserve (cr);
+ cairo_set_source_rgb (cr, 0, 1, 0);
+ cairo_set_line_width (cr, 0.5);
+ cairo_stroke (cr);
+
+ return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (random_intersections_curves_nz,
+ "Tests the tessellator trapezoid generation and intersection computation",
+ "trap", /* keywords */
+ NULL, /* requirements */
+ SIZE+3, SIZE+3,
+ NULL, draw)
+
diff --git a/test/random-intersections-curves-nz.pdf.ref.png b/test/random-intersections-curves-nz.pdf.ref.png
new file mode 100644
index 000000000..a374934bc
--- /dev/null
+++ b/test/random-intersections-curves-nz.pdf.ref.png
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diff --git a/test/random-intersections-curves-nz.ps.ref.png b/test/random-intersections-curves-nz.ps.ref.png
new file mode 100644
index 000000000..14b7c0d06
--- /dev/null
+++ b/test/random-intersections-curves-nz.ps.ref.png
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diff --git a/test/random-intersections-curves-nz.ref.png b/test/random-intersections-curves-nz.ref.png
new file mode 100644
index 000000000..3b36e5e3c
--- /dev/null
+++ b/test/random-intersections-curves-nz.ref.png
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diff --git a/test/random-intersections-curves-nz.xlib-fallback.ref.png b/test/random-intersections-curves-nz.xlib-fallback.ref.png
new file mode 100644
index 000000000..499eb9ef3
--- /dev/null
+++ b/test/random-intersections-curves-nz.xlib-fallback.ref.png
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diff --git a/test/random-intersections-curves-nz.xlib.ref.png b/test/random-intersections-curves-nz.xlib.ref.png
new file mode 100644
index 000000000..729bf6555
--- /dev/null
+++ b/test/random-intersections-curves-nz.xlib.ref.png
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