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
8 static pixman_image_t *
make_source(void)9 make_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
27 int
main()28 main ()
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