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-rw-r--r--perf/micro/wave.c115
1 files changed, 115 insertions, 0 deletions
diff --git a/perf/micro/wave.c b/perf/micro/wave.c
new file mode 100644
index 000000000..f6e6f74a3
--- /dev/null
+++ b/perf/micro/wave.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright 2011 Red Hat Inc.
+ *
+ * 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: Benjamin Otte <otte@redhat.com>
+ */
+
+#include "cairo-perf.h"
+
+static cairo_surface_t *
+generate_random_waveform(cairo_t *target, int width, int height)
+{
+ cairo_surface_t *surface;
+ cairo_t *cr;
+ int i, r;
+
+ srand (0xdeadbeef);
+
+ surface = cairo_surface_create_similar (cairo_get_target (target),
+ CAIRO_CONTENT_ALPHA,
+ width, height);
+ cr = cairo_create (surface);
+
+ r = height / 2;
+
+ for (i = 0; i < width; i++)
+ {
+ r += rand () % (height / 4) - (height / 8);
+ if (r < 0)
+ r = 0;
+ else if (r > height)
+ r = height;
+ cairo_rectangle (cr, i, (height - r) / 2, 1, r);
+ }
+ cairo_fill (cr);
+ cairo_destroy (cr);
+
+ return surface;
+}
+
+static cairo_time_t
+do_wave (cairo_t *cr, int width, int height, int loops)
+{
+ cairo_surface_t *wave;
+ cairo_pattern_t *mask;
+
+ wave = generate_random_waveform (cr, width, height);
+
+ cairo_perf_timer_start ();
+
+ while (loops--) {
+ /* paint outline (and contents) */
+ cairo_set_source_rgb (cr, 1, 0, 0);
+ cairo_mask_surface (cr, wave, 0, 0);
+
+ /* overdraw inline */
+ /* first, create a mask */
+ cairo_push_group_with_content (cr, CAIRO_CONTENT_ALPHA);
+ cairo_set_source_surface (cr, wave, 0, 0);
+ cairo_paint (cr);
+ cairo_set_operator (cr, CAIRO_OPERATOR_IN);
+ cairo_set_source_surface (cr, wave, 1, 0);
+ cairo_paint (cr);
+ cairo_set_source_surface (cr, wave, -1, 0);
+ cairo_paint (cr);
+ cairo_set_source_surface (cr, wave, 0, 1);
+ cairo_paint (cr);
+ cairo_set_source_surface (cr, wave, 0, -1);
+ cairo_paint (cr);
+ mask = cairo_pop_group (cr);
+
+ /* second, paint the mask */
+ cairo_set_source_rgb (cr, 0, 1, 0);
+ cairo_mask (cr, mask);
+
+ cairo_pattern_destroy (mask);
+ }
+
+ cairo_perf_timer_stop ();
+
+ cairo_surface_destroy (wave);
+
+ return cairo_perf_timer_elapsed ();
+}
+
+cairo_bool_t
+wave_enabled (cairo_perf_t *perf)
+{
+ return cairo_perf_can_run (perf, "wave", NULL);
+}
+
+void
+wave (cairo_perf_t *perf, cairo_t *cr, int width, int height)
+{
+ cairo_perf_run (perf, "wave", do_wave, NULL);
+}