mirror of
https://salsa.debian.org/xorg-team/lib/pixman
synced 2025-09-01 10:35:16 +00:00
b31a696263
Wallclock time for running pixman "make check" (compile time not included):
----------------------------+----------------+-----------------------------+
| old PRNG (LCG) | new PRNG (Bob Jenkins) |
Processor type +----------------+------------+----------------+
| gcc 4.5 | gcc 4.5 | gcc 4.7 (simd) |
----------------------------+----------------+------------+----------------+
quad Intel Core i7 @2.8GHz | 0m49.494s | 0m43.722s | 0m37.560s |
dual ARM Cortex-A15 @1.7GHz | 5m8.465s | 4m37.375s | 3m45.819s |
IBM Cell PPU @3.2GHz | 23m0.821s | 20m38.316s | 16m37.513s |
----------------------------+----------------+------------+----------------+
But some tests got a particularly large boost. For example benchmarking and
profiling blitters-test on Core i7:
=== before ===
$ time ./blitters-test
real 0m10.907s
user 0m55.650s
sys 0m0.000s
70.45% blitters-test blitters-test [.] create_random_image
15.81% blitters-test blitters-test [.] compute_crc32_for_image_internal
2.26% blitters-test blitters-test [.] _pixman_implementation_lookup_composite
1.07% blitters-test libc-2.15.so [.] _int_free
0.89% blitters-test libc-2.15.so [.] malloc_consolidate
0.87% blitters-test libc-2.15.so [.] _int_malloc
0.75% blitters-test blitters-test [.] combine_conjoint_general_u
0.61% blitters-test blitters-test [.] combine_disjoint_general_u
0.40% blitters-test blitters-test [.] test_composite
0.31% blitters-test libc-2.15.so [.] _int_memalign
0.31% blitters-test blitters-test [.] _pixman_bits_image_setup_accessors
0.28% blitters-test libc-2.15.so [.] malloc
=== after ===
$ time ./blitters-test
real 0m3.655s
user 0m20.550s
sys 0m0.000s
41.77% blitters-test.n blitters-test.new [.] compute_crc32_for_image_internal
15.77% blitters-test.n blitters-test.new [.] prng_randmemset_r
6.15% blitters-test.n blitters-test.new [.] _pixman_implementation_lookup_composite
3.09% blitters-test.n libc-2.15.so [.] _int_free
2.68% blitters-test.n libc-2.15.so [.] malloc_consolidate
2.39% blitters-test.n libc-2.15.so [.] _int_malloc
2.27% blitters-test.n blitters-test.new [.] create_random_image
2.22% blitters-test.n blitters-test.new [.] combine_conjoint_general_u
1.52% blitters-test.n blitters-test.new [.] combine_disjoint_general_u
1.40% blitters-test.n blitters-test.new [.] test_composite
1.02% blitters-test.n blitters-test.new [.] prng_srand_r
1.00% blitters-test.n blitters-test.new [.] _pixman_image_validate
0.96% blitters-test.n blitters-test.new [.] _pixman_bits_image_setup_accessors
0.90% blitters-test.n libc-2.15.so [.] malloc
112 lines
2.6 KiB
C
112 lines
2.6 KiB
C
#include <stdlib.h>
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#include "utils.h"
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#define WIDTH 32
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#define HEIGHT 32
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static const pixman_format_code_t formats[] =
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{
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PIXMAN_a8r8g8b8,
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PIXMAN_a8b8g8r8,
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PIXMAN_x8r8g8b8,
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PIXMAN_x8b8g8r8,
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PIXMAN_r5g6b5,
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PIXMAN_b5g6r5,
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PIXMAN_a8,
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PIXMAN_a1,
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};
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static const pixman_op_t ops[] =
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{
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PIXMAN_OP_OVER,
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PIXMAN_OP_SRC,
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PIXMAN_OP_ADD,
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};
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#define TRANSFORM(v00, v01, v10, v11) \
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{ { { v00, v01, WIDTH * pixman_fixed_1 / 2 }, \
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{ v10, v11, HEIGHT * pixman_fixed_1 / 2 }, \
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{ 0, 0, pixman_fixed_1 } } }
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#define F1 pixman_fixed_1
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static const pixman_transform_t transforms[] =
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{
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TRANSFORM (0, -1, 1, 0), /* wrong 90 degree rotation */
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TRANSFORM (0, 1, -1, 0), /* wrong 270 degree rotation */
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TRANSFORM (1, 0, 0, 1), /* wrong identity */
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TRANSFORM (-1, 0, 0, -1), /* wrong 180 degree rotation */
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TRANSFORM (0, -F1, F1, 0), /* correct 90 degree rotation */
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TRANSFORM (0, F1, -F1, 0), /* correct 270 degree rotation */
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TRANSFORM (F1, 0, 0, F1), /* correct identity */
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TRANSFORM (-F1, 0, 0, -F1), /* correct 180 degree rotation */
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};
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#define RANDOM_FORMAT() \
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(formats[prng_rand_n (ARRAY_LENGTH (formats))])
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#define RANDOM_OP() \
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(ops[prng_rand_n (ARRAY_LENGTH (ops))])
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#define RANDOM_TRANSFORM() \
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(&(transforms[prng_rand_n (ARRAY_LENGTH (transforms))]))
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static void
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on_destroy (pixman_image_t *image, void *data)
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{
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free (data);
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}
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static pixman_image_t *
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make_image (void)
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{
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pixman_format_code_t format = RANDOM_FORMAT();
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uint32_t *bytes = malloc (WIDTH * HEIGHT * 4);
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pixman_image_t *image;
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prng_randmemset (bytes, WIDTH * HEIGHT * 4, 0);
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image = pixman_image_create_bits (
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format, WIDTH, HEIGHT, bytes, WIDTH * 4);
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pixman_image_set_transform (image, RANDOM_TRANSFORM());
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pixman_image_set_destroy_function (image, on_destroy, bytes);
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pixman_image_set_repeat (image, PIXMAN_REPEAT_NORMAL);
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image_endian_swap (image);
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return image;
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}
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static uint32_t
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test_transform (int testnum, int verbose)
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{
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pixman_image_t *src, *dest;
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uint32_t crc;
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prng_srand (testnum);
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src = make_image ();
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dest = make_image ();
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pixman_image_composite (RANDOM_OP(),
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src, NULL, dest,
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0, 0, 0, 0, WIDTH / 2, HEIGHT / 2,
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WIDTH, HEIGHT);
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crc = compute_crc32_for_image (0, dest);
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pixman_image_unref (src);
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pixman_image_unref (dest);
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return crc;
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}
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int
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main (int argc, const char *argv[])
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{
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return fuzzer_test_main ("rotate", 15000,
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0xECF5E426,
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test_transform, argc, argv);
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}
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