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From nobody Mon Sep 17 00:00:00 2001
From: Dan Amelang <dan@amelang.net>
Date: Tue Oct 31 23:47:35 2006 -0800
Subject: [PATCH] Add new perf test "pattern_create_radial"
This test is really just for hammering the double to fixed-point conversion
(in _cairo_fixed_from_double) that happens as doubles from API calls gets
translated into internal cairo fixed-point numbers.
Because it's not generally useful, I don't recommend that it become part of
the main cairo performance test. But hey, it might come in handy for someone
else.
---
perf/Makefile.am | 1
perf/cairo-perf.c | 1
perf/cairo-perf.h | 1
perf/pattern_create_radial.c | 98 ++++++++++++++++++++++++++++++++++++++++++
4 files changed, 101 insertions(+), 0 deletions(-)
create mode 100644 perf/pattern_create_radial.c
977383b86c68d0523c899efcba3cf8d36e94d2a7
diff --git a/perf/Makefile.am b/perf/Makefile.am
index 419a998..e1cfdc7 100644
--- a/perf/Makefile.am
+++ b/perf/Makefile.am
@@ -21,6 +21,7 @@ cairo_perf_SOURCES = \
stroke.c \
subimage_copy.c \
tessellate.c \
+ pattern_create_radial.c \
text.c
if CAIRO_HAS_WIN32_SURFACE
diff --git a/perf/cairo-perf.c b/perf/cairo-perf.c
index d9734c4..0707433 100644
--- a/perf/cairo-perf.c
+++ b/perf/cairo-perf.c
@@ -256,5 +256,6 @@ cairo_perf_case_t perf_cases[] = {
{ text, 64, 256},
{ tessellate, 100, 100},
{ subimage_copy, 16, 512},
+ { pattern_create_radial, 16, 16},
{ NULL }
};
diff --git a/perf/cairo-perf.h b/perf/cairo-perf.h
index 560ba64..faacff9 100644
--- a/perf/cairo-perf.h
+++ b/perf/cairo-perf.h
@@ -88,5 +88,6 @@ CAIRO_PERF_DECL (stroke);
CAIRO_PERF_DECL (subimage_copy);
CAIRO_PERF_DECL (tessellate);
CAIRO_PERF_DECL (text);
+CAIRO_PERF_DECL (pattern_create_radial);
#endif
diff --git a/perf/pattern_create_radial.c b/perf/pattern_create_radial.c
new file mode 100644
index 0000000..d793b7d
--- /dev/null
+++ b/perf/pattern_create_radial.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright © 2006 Dan Amelang
+ *
+ * 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 authors not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. The authors make no representations about the
+ * suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE AUTHORS 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.
+ *
+ * Authors: Dan Amelang <dan@amelang.net>
+ *
+ * This test was originally created to test _cairo_fixed_from_double.
+ * cairo_pattern_create_radial was selected as the entry point into
+ * cairo as it makes several calls to _cairo_fixed_from_double and
+ * presents a somewhat realistic use-case (although the RADIALS_COUNT
+ * isn't very realistic).
+ */
+#include <time.h>
+#include "cairo-perf.h"
+
+#define RADIALS_COUNT (100000)
+
+static struct
+{
+ double cx0;
+ double cy0;
+ double radius0;
+ double cx1;
+ double cy1;
+ double radius1;
+} radials[RADIALS_COUNT];
+
+static double
+generate_double_in_range (double min, double max)
+{
+ double d;
+
+ d = rand () / (double) RAND_MAX;
+ d *= max - min;
+ d += min;
+
+ return d;
+}
+
+static cairo_perf_ticks_t
+do_pattern_create_radial (cairo_t *cr, int width, int height)
+{
+ int i;
+ cairo_pattern_t *pattern;
+
+ cairo_perf_timer_start ();
+
+ for (i = 0; i < RADIALS_COUNT; i++)
+ {
+ pattern = cairo_pattern_create_radial (radials[i].cx0, radials[i].cy0,
+ radials[i].radius0,
+ radials[i].cx1, radials[i].cy1,
+ radials[i].radius1);
+ cairo_pattern_destroy (pattern);
+ }
+
+ cairo_perf_timer_stop ();
+
+ return cairo_perf_timer_elapsed ();
+}
+
+void
+pattern_create_radial (cairo_perf_t *perf, cairo_t *cr, int width, int height)
+{
+ int i;
+
+ srand (time (0));
+ for (i = 0; i < RADIALS_COUNT; i++)
+ {
+ radials[i].cx0 = generate_double_in_range (-50000.0, 50000.0);
+ radials[i].cy0 = generate_double_in_range (-50000.0, 50000.0);
+ radials[i].radius0 = generate_double_in_range (0.0, 1000.0);
+ radials[i].cx1 = generate_double_in_range (-50000.0, 50000.0);
+ radials[i].cy1 = generate_double_in_range (-50000.0, 50000.0);
+ radials[i].radius1 = generate_double_in_range (0.0, 1000.0);
+ }
+
+ cairo_perf_run (perf, "pattern_create_radial",
+ do_pattern_create_radial);
+}
--
1.2.6
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