1#include <stdlib.h>
2#include "utils.h"
3
4#define SOURCE_WIDTH 320
5#define SOURCE_HEIGHT 240
6#define TEST_REPEATS 3
7
8static pixman_image_t *
9make_source (void)
10{
11    size_t n_bytes = (SOURCE_WIDTH + 2) * (SOURCE_HEIGHT + 2) * 4;
12    uint32_t *data = malloc (n_bytes);
13    pixman_image_t *source;
14
15    prng_randmemset (data, n_bytes, 0);
16
17    source = pixman_image_create_bits (
18	PIXMAN_a8r8g8b8, SOURCE_WIDTH + 2, SOURCE_HEIGHT + 2,
19	data,
20	(SOURCE_WIDTH + 2) * 4);
21
22    pixman_image_set_filter (source, PIXMAN_FILTER_BILINEAR, NULL, 0);
23
24    return source;
25}
26
27int
28main ()
29{
30    double scale;
31    pixman_image_t *src;
32
33    prng_srand (23874);
34
35    src = make_source ();
36    printf ("# %-6s %-22s   %-14s %-12s\n",
37	    "ratio",
38	    "resolutions",
39	    "time / ms",
40	    "time per pixel / ns");
41    for (scale = 0.1; scale < 10.005; scale += 0.01)
42    {
43	int i;
44	int dest_width = SOURCE_WIDTH * scale + 0.5;
45	int dest_height = SOURCE_HEIGHT * scale + 0.5;
46	int dest_byte_stride = (dest_width * 4 + 15) & ~15;
47	pixman_fixed_t s = (1 / scale) * 65536.0 + 0.5;
48	pixman_transform_t transform;
49	pixman_image_t *dest;
50	double t1, t2, t = -1;
51	uint32_t *dest_buf = aligned_malloc (16, dest_byte_stride * dest_height);
52	memset (dest_buf, 0, dest_byte_stride * dest_height);
53
54	pixman_transform_init_scale (&transform, s, s);
55	pixman_image_set_transform (src, &transform);
56
57	dest = pixman_image_create_bits (
58	    PIXMAN_a8r8g8b8, dest_width, dest_height, dest_buf, dest_byte_stride);
59
60	for (i = 0; i < TEST_REPEATS; i++)
61	{
62	    t1 = gettime();
63	    pixman_image_composite (
64		PIXMAN_OP_OVER, src, NULL, dest,
65		scale, scale, 0, 0, 0, 0, dest_width, dest_height);
66	    t2 = gettime();
67	    if (t < 0 || t2 - t1 < t)
68		t = t2 - t1;
69	}
70
71	printf ("%6.2f : %4dx%-4d => %4dx%-4d : %12.4f : %12.4f\n",
72		scale, SOURCE_WIDTH, SOURCE_HEIGHT, dest_width, dest_height,
73		t * 1000, (t / (dest_width * dest_height)) * 1000000000);
74
75	pixman_image_unref (dest);
76	free (dest_buf);
77    }
78
79    return 0;
80}
81