perf/micro: diagonal lines

The ideal benchmark for spans?...

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

perf/cairo-perf-micro.c

@@ -544,7 +544,8 @@ const cairo_perf_case_t perf_cases[] = {
     { text,   64, 512},
     { glyphs, 64, 512},
     { mask,   64, 512},
-    { curve,  64, 512},
+    { line,  32, 512},
+    { curve,  32, 512},
     { disjoint,   64, 512},
     { hatching,   64, 512},
     { tessellate, 100, 100},

perf/cairo-perf.h

@@ -217,5 +217,6 @@ CAIRO_PERF_DECL (many_fills);
 CAIRO_PERF_DECL (wide_fills);
 CAIRO_PERF_DECL (many_curves);
 CAIRO_PERF_DECL (curve);
+CAIRO_PERF_DECL (line);
 
 #endif

perf/micro/Makefile.sources

@@ -6,6 +6,7 @@ libcairo_perf_micro_sources = \
 	fill.c			\
 	hatching.c		\
 	hash-table.c		\
+	line.c			\
 	long-lines.c		\
 	mosaic.c		\
 	paint.c			\

perf/micro/line.c

@@ -0,0 +1,219 @@
+/*
+ * Copyright © 2011 Intel Corporation
+ *
+ * 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: Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairo-perf.h"
+
+static cairo_perf_ticks_t
+horizontal (cairo_t *cr, int width, int height, int loops)
+{
+    double h = height/2 + .5;
+
+    cairo_move_to (cr, 0, h);
+    cairo_line_to (cr, width, h);
+
+    cairo_perf_timer_start ();
+
+    while (loops--)
+	cairo_stroke_preserve (cr);
+
+    cairo_perf_timer_stop ();
+
+    cairo_new_path (cr);
+
+    return cairo_perf_timer_elapsed ();
+}
+
+static cairo_perf_ticks_t
+horizontal_hair (cairo_t *cr, int width, int height, int loops)
+{
+    cairo_set_line_width (cr, 1.);
+    return horizontal (cr, width, height, loops);
+}
+
+static cairo_perf_ticks_t
+horizontal_wide (cairo_t *cr, int width, int height, int loops)
+{
+    cairo_set_line_width (cr, 5.);
+    return horizontal (cr, width, height, loops);
+}
+
+static cairo_perf_ticks_t
+nearly_horizontal (cairo_t *cr, int width, int height, int loops)
+{
+    double h = height/2;
+
+    cairo_move_to (cr, 0, h);
+    cairo_line_to (cr, width, h+1);
+
+    cairo_perf_timer_start ();
+
+    while (loops--)
+	cairo_stroke_preserve (cr);
+
+    cairo_perf_timer_stop ();
+
+    cairo_new_path (cr);
+
+    return cairo_perf_timer_elapsed ();
+}
+
+static cairo_perf_ticks_t
+nearly_horizontal_hair (cairo_t *cr, int width, int height, int loops)
+{
+    cairo_set_line_width (cr, 1.);
+    return nearly_horizontal (cr, width, height, loops);
+}
+
+static cairo_perf_ticks_t
+nearly_horizontal_wide (cairo_t *cr, int width, int height, int loops)
+{
+    cairo_set_line_width (cr, 5.);
+    return nearly_horizontal (cr, width, height, loops);
+}
+
+
+static cairo_perf_ticks_t
+vertical (cairo_t *cr, int width, int height, int loops)
+{
+    double w = width/2 + .5;
+
+    cairo_move_to (cr, w, 0);
+    cairo_line_to (cr, w, height);
+
+    cairo_perf_timer_start ();
+
+    while (loops--)
+	cairo_stroke_preserve (cr);
+
+    cairo_perf_timer_stop ();
+
+    cairo_new_path (cr);
+
+    return cairo_perf_timer_elapsed ();
+}
+
+static cairo_perf_ticks_t
+vertical_hair (cairo_t *cr, int width, int height, int loops)
+{
+    cairo_set_line_width (cr, 1.);
+    return vertical (cr, width, height, loops);
+}
+
+static cairo_perf_ticks_t
+vertical_wide (cairo_t *cr, int width, int height, int loops)
+{
+    cairo_set_line_width (cr, 5.);
+    return vertical (cr, width, height, loops);
+}
+
+static cairo_perf_ticks_t
+nearly_vertical (cairo_t *cr, int width, int height, int loops)
+{
+    double w = width/2;
+
+    cairo_move_to (cr, w, 0);
+    cairo_line_to (cr, w+1, height);
+
+    cairo_perf_timer_start ();
+
+    while (loops--)
+	cairo_stroke_preserve (cr);
+
+    cairo_perf_timer_stop ();
+
+    cairo_new_path (cr);
+
+    return cairo_perf_timer_elapsed ();
+}
+
+static cairo_perf_ticks_t
+nearly_vertical_hair (cairo_t *cr, int width, int height, int loops)
+{
+    cairo_set_line_width (cr, 1.);
+    return nearly_vertical (cr, width, height, loops);
+}
+
+static cairo_perf_ticks_t
+nearly_vertical_wide (cairo_t *cr, int width, int height, int loops)
+{
+    cairo_set_line_width (cr, 5.);
+    return nearly_vertical (cr, width, height, loops);
+}
+
+
+static cairo_perf_ticks_t
+diagonal (cairo_t *cr, int width, int height, int loops)
+{
+    cairo_move_to (cr, 0, 0);
+    cairo_line_to (cr, width, height);
+
+    cairo_perf_timer_start ();
+
+    while (loops--)
+	cairo_stroke_preserve (cr);
+
+    cairo_perf_timer_stop ();
+
+    cairo_new_path (cr);
+
+    return cairo_perf_timer_elapsed ();
+}
+
+static cairo_perf_ticks_t
+diagonal_hair (cairo_t *cr, int width, int height, int loops)
+{
+    cairo_set_line_width (cr, 1.);
+    return diagonal (cr, width, height, loops);
+}
+
+static cairo_perf_ticks_t
+diagonal_wide (cairo_t *cr, int width, int height, int loops)
+{
+    cairo_set_line_width (cr, 5.);
+    return diagonal (cr, width, height, loops);
+}
+
+void
+line (cairo_perf_t *perf, cairo_t *cr, int width, int height)
+{
+    if (! cairo_perf_can_run (perf, "line", NULL))
+	return;
+
+    cairo_set_source_rgb (cr, 1., 1., 1.);
+
+    cairo_perf_run (perf, "line-hh", horizontal_hair, NULL);
+    cairo_perf_run (perf, "line-hw", horizontal_wide, NULL);
+    cairo_perf_run (perf, "line-nhh", nearly_horizontal_hair, NULL);
+    cairo_perf_run (perf, "line-nhw", nearly_horizontal_wide, NULL);
+
+    cairo_perf_run (perf, "line-vh", vertical_hair, NULL);
+    cairo_perf_run (perf, "line-vw", vertical_wide, NULL);
+    cairo_perf_run (perf, "line-nvh", nearly_vertical_hair, NULL);
+    cairo_perf_run (perf, "line-nvw", nearly_vertical_wide, NULL);
+
+    cairo_perf_run (perf, "line-dh", diagonal_hair, NULL);
+    cairo_perf_run (perf, "line-dw", diagonal_wide, NULL);
+}