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+/*
+ * Copyright © 2007 Björn Lindqvist
+ *
+ * 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: Björn Lindqvist <bjourne@gmail.com>
+ */
+
+#include "cairo-perf.h"
+
+/* This test case measures how much time cairo takes to render the
+ * equivalent of the following gdk-pixbuf operation:
+ *
+ * gdk_pixbuf_composite_color(dest,
+ * 0, 0, DST_SIZE, DST_SIZE,
+ * 0, 0,
+ * SCALE, SCALE,
+ * gdk.INTERP_NEAREST,
+ * 255,
+ * 0, 0,
+ * 8, 0x33333333, 0x88888888);
+ *
+ * Cairo is (at the time of writing) about 2-3 times as slow as
+ * gdk-pixbuf.
+ */
+#define PAT_SIZE 16
+#define SRC_SIZE 64
+
+static cairo_pattern_t *checkerboard = NULL;
+static cairo_pattern_t *src_pattern = NULL;
+
+static cairo_time_t
+do_composite_checker (cairo_t *cr,
+ int width,
+ int height,
+ int loops)
+{
+ /* Compute zoom so that the src_pattern covers the whole output image. */
+ double xscale = width / (double) SRC_SIZE;
+ double yscale = height / (double) SRC_SIZE;
+
+ cairo_perf_timer_start ();
+
+ while (loops--) {
+ /* Fill the surface with our background. */
+ cairo_identity_matrix (cr);
+ cairo_set_source (cr, checkerboard);
+ cairo_paint (cr);
+
+ /* Draw the scaled image on top. */
+ cairo_scale (cr, xscale, yscale);
+ cairo_set_source (cr, src_pattern);
+ cairo_paint (cr);
+ }
+
+ cairo_perf_timer_stop ();
+ return cairo_perf_timer_elapsed ();
+}
+
+cairo_bool_t
+composite_checker_enabled (cairo_perf_t *perf)
+{
+ return cairo_perf_can_run (perf, "composite-checker", NULL);
+}
+
+void
+composite_checker (cairo_perf_t *perf,
+ cairo_t *cr,
+ int width,
+ int height)
+{
+ cairo_surface_t *image;
+
+ /* Create the checker pattern. We don't actually need to draw
+ * anything on it since that wouldn't affect performance.
+ */
+ image = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
+ PAT_SIZE,
+ PAT_SIZE);
+ checkerboard = cairo_pattern_create_for_surface (image);
+ cairo_pattern_set_filter (checkerboard, CAIRO_FILTER_NEAREST);
+ cairo_pattern_set_extend (checkerboard, CAIRO_EXTEND_REPEAT);
+ cairo_surface_destroy (image);
+
+ /* Create the image source pattern. Again we use the NEAREST
+ * filtering which should be fastest.
+ */
+ image = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
+ SRC_SIZE,
+ SRC_SIZE);
+ src_pattern = cairo_pattern_create_for_surface (image);
+ cairo_pattern_set_filter (src_pattern, CAIRO_FILTER_NEAREST);
+ cairo_surface_destroy (image);
+
+ cairo_perf_run (perf, "composite-checker", do_composite_checker, NULL);
+
+ cairo_pattern_destroy (checkerboard);
+ cairo_pattern_destroy (src_pattern);
+}