2 * Test program, which stresses the use of different color formats and
3 * compositing operations.
5 * Just run it without any command line arguments, and it will report either
6 * "blitters test passed" - everything is ok
7 * "blitters test failed!" - there is some problem
9 * In the case of failure, finding the problem involves the following steps:
10 * 1. Get the reference 'blitters-test' binary. It makes sense to disable all
11 * the cpu specific optimizations in pixman and also configure it with
12 * '--disable-shared' option. Those who are paranoid can also tweak the
13 * sources to disable all fastpath functions. The resulting binary
14 * can be renamed to something like 'blitters-test.ref'.
15 * 2. Compile the buggy binary (also with the '--disable-shared' option).
16 * 3. Run 'ruby blitters-test-bisect.rb ./blitters-test.ref ./blitters-test'
17 * 4. Look at the information about failed case (destination buffer content
18 * will be shown) and try to figure out what is wrong. Loading
19 * test program in gdb, specifying failed test number in the command
20 * line with '-' character prepended and setting breakpoint on
21 * 'pixman_image_composite' function can provide detailed information
22 * about function arguments
30 /* A primitive pseudorandom number generator, taken from POSIX.1-2001 example */
32 static uint32_t lcg_seed;
34 static inline uint32_t
37 lcg_seed = lcg_seed * 1103515245 + 12345;
38 return ((uint32_t)(lcg_seed / 65536) % 32768);
42 lcg_srand (uint32_t seed)
47 static inline uint32_t
50 return lcg_rand () % max;
54 aligned_malloc (size_t align, size_t size)
58 #ifdef HAVE_POSIX_MEMALIGN
59 posix_memalign (&result, align, size);
61 result = malloc (size);
67 /*----------------------------------------------------------------------------*\
68 * CRC-32 version 2.0.0 by Craig Bruce, 2006-04-29.
70 * This program generates the CRC-32 values for the files named in the
71 * command-line arguments. These are the same CRC-32 values used by GZIP,
72 * PKZIP, and ZMODEM. The Crc32_ComputeBuf () can also be detached and
75 * THIS PROGRAM IS PUBLIC-DOMAIN SOFTWARE.
77 * Based on the byte-oriented implementation "File Verification Using CRC"
78 * by Mark R. Nelson in Dr. Dobb's Journal, May 1992, pp. 64-67.
80 * v1.0.0: original release.
81 * v1.0.1: fixed printf formats.
82 * v1.0.2: fixed something else.
83 * v1.0.3: replaced CRC constant table by generator function.
84 * v1.0.4: reformatted code, made ANSI C. 1994-12-05.
85 * v2.0.0: rewrote to use memory buffer & static table, 2006-04-29.
86 \*----------------------------------------------------------------------------*/
88 /*----------------------------------------------------------------------------*\
90 * Crc32_ComputeBuf () - computes the CRC-32 value of a memory buffer
92 * Computes or accumulates the CRC-32 value for a memory buffer.
93 * The 'inCrc32' gives a previously accumulated CRC-32 value to allow
94 * a CRC to be generated for multiple sequential buffer-fuls of data.
95 * The 'inCrc32' for the first buffer must be zero.
97 * inCrc32 - accumulated CRC-32 value, must be 0 on first call
98 * buf - buffer to compute CRC-32 value for
99 * bufLen - number of bytes in buffer
101 * crc32 - computed CRC-32 value
103 * (no errors are possible)
104 \*----------------------------------------------------------------------------*/
107 compute_crc32 (uint32_t in_crc32,
111 static const uint32_t crc_table[256] = {
112 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F,
113 0xE963A535, 0x9E6495A3, 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
114 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2,
115 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
116 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9,
117 0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
118 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA, 0x42B2986C,
119 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
120 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423,
121 0xCFBA9599, 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
122 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, 0x76DC4190, 0x01DB7106,
123 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
124 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D,
125 0x91646C97, 0xE6635C01, 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
126 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950,
127 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
128 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7,
129 0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
130 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA,
131 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
132 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81,
133 0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
134 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, 0xE3630B12, 0x94643B84,
135 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
136 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB,
137 0x196C3671, 0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
138 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8, 0xA1D1937E,
139 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
140 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55,
141 0x316E8EEF, 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
142 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28,
143 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
144 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F,
145 0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
146 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242,
147 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
148 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69,
149 0x616BFFD3, 0x166CCF45, 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
150 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC,
151 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
152 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693,
153 0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
154 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
158 unsigned char * byte_buf;
161 /* accumulate crc32 for buffer */
162 crc32 = in_crc32 ^ 0xFFFFFFFF;
163 byte_buf = (unsigned char*) buf;
165 for (i = 0; i < buf_len; i++)
166 crc32 = (crc32 >> 8) ^ crc_table[(crc32 ^ byte_buf[i]) & 0xFF];
168 return (crc32 ^ 0xFFFFFFFF);
171 /* perform endian conversion of pixel data */
173 image_endian_swap (pixman_image_t *img, int bpp)
175 int stride = pixman_image_get_stride (img);
176 uint32_t *data = pixman_image_get_data (img);
177 int height = pixman_image_get_height (img);;
180 /* swap bytes only on big endian systems */
181 volatile uint16_t endian_check_var = 0x1234;
182 if (*(volatile uint8_t *)&endian_check_var != 0x12)
185 for (i = 0; i < height; i++)
187 uint8_t *line_data = (uint8_t *)data + stride * i;
188 /* swap bytes only for 16, 24 and 32 bpp for now */
192 for (j = 0; j < stride; j++)
195 ((line_data[j] & 0x80) >> 7) |
196 ((line_data[j] & 0x40) >> 5) |
197 ((line_data[j] & 0x20) >> 3) |
198 ((line_data[j] & 0x10) >> 1) |
199 ((line_data[j] & 0x08) << 1) |
200 ((line_data[j] & 0x04) << 3) |
201 ((line_data[j] & 0x02) << 5) |
202 ((line_data[j] & 0x01) << 7);
206 for (j = 0; j < stride; j++)
208 line_data[j] = (line_data[j] >> 4) | (line_data[j] << 4);
212 for (j = 0; j + 2 <= stride; j += 2)
214 char t1 = line_data[j + 0];
215 char t2 = line_data[j + 1];
217 line_data[j + 1] = t1;
218 line_data[j + 0] = t2;
222 for (j = 0; j + 3 <= stride; j += 3)
224 char t1 = line_data[j + 0];
225 char t2 = line_data[j + 1];
226 char t3 = line_data[j + 2];
228 line_data[j + 2] = t1;
229 line_data[j + 1] = t2;
230 line_data[j + 0] = t3;
234 for (j = 0; j + 4 <= stride; j += 4)
236 char t1 = line_data[j + 0];
237 char t2 = line_data[j + 1];
238 char t3 = line_data[j + 2];
239 char t4 = line_data[j + 3];
241 line_data[j + 3] = t1;
242 line_data[j + 2] = t2;
243 line_data[j + 1] = t3;
244 line_data[j + 0] = t4;
253 /* Create random image for testing purposes */
254 static pixman_image_t *
255 create_random_image (pixman_format_code_t *allowed_formats,
258 int max_extra_stride,
259 pixman_format_code_t *used_fmt)
261 int n = 0, i, width, height, stride;
262 pixman_format_code_t fmt;
266 while (allowed_formats[n] != -1)
268 fmt = allowed_formats[lcg_rand_n (n)];
269 width = lcg_rand_n (max_width) + 1;
270 height = lcg_rand_n (max_height) + 1;
271 stride = (width * PIXMAN_FORMAT_BPP (fmt) + 7) / 8 +
272 lcg_rand_n (max_extra_stride + 1);
273 stride = (stride + 3) & ~3;
275 /* do the allocation */
276 buf = aligned_malloc (64, stride * height);
278 /* initialize image with random data */
279 for (i = 0; i < stride * height; i++)
281 /* generation is biased to having more 0 or 255 bytes as
282 * they are more likely to be special-cased in code
284 *((uint8_t *)buf + i) = lcg_rand_n (4) ? lcg_rand_n (256) :
285 (lcg_rand_n (2) ? 0 : 255);
288 img = pixman_image_create_bits (fmt, width, height, buf, stride);
290 image_endian_swap (img, PIXMAN_FORMAT_BPP (fmt));
292 if (used_fmt) *used_fmt = fmt;
296 /* Free random image, and optionally update crc32 based on its data */
298 free_random_image (uint32_t initcrc,
300 pixman_format_code_t fmt)
303 int stride = pixman_image_get_stride (img);
304 uint32_t *data = pixman_image_get_data (img);
305 int height = pixman_image_get_height (img);;
309 /* mask unused 'x' part */
310 if (PIXMAN_FORMAT_BPP (fmt) - PIXMAN_FORMAT_DEPTH (fmt) &&
311 PIXMAN_FORMAT_DEPTH (fmt) != 0)
314 uint32_t *data = pixman_image_get_data (img);
315 uint32_t mask = (1 << PIXMAN_FORMAT_DEPTH (fmt)) - 1;
317 for (i = 0; i < 32; i++)
318 mask |= mask << (i * PIXMAN_FORMAT_BPP (fmt));
320 for (i = 0; i < stride * height / 4; i++)
324 /* swap endiannes in order to provide identical results on both big
325 * and litte endian systems
327 image_endian_swap (img, PIXMAN_FORMAT_BPP (fmt));
328 crc32 = compute_crc32 (initcrc, data, stride * height);
331 pixman_image_unref (img);
337 static pixman_op_t op_list[] = {
345 PIXMAN_OP_OVER_REVERSE,
347 PIXMAN_OP_IN_REVERSE,
349 PIXMAN_OP_OUT_REVERSE,
351 PIXMAN_OP_ATOP_REVERSE,
355 PIXMAN_OP_DISJOINT_CLEAR,
356 PIXMAN_OP_DISJOINT_SRC,
357 PIXMAN_OP_DISJOINT_DST,
358 PIXMAN_OP_DISJOINT_OVER,
359 PIXMAN_OP_DISJOINT_OVER_REVERSE,
360 PIXMAN_OP_DISJOINT_IN,
361 PIXMAN_OP_DISJOINT_IN_REVERSE,
362 PIXMAN_OP_DISJOINT_OUT,
363 PIXMAN_OP_DISJOINT_OUT_REVERSE,
364 PIXMAN_OP_DISJOINT_ATOP,
365 PIXMAN_OP_DISJOINT_ATOP_REVERSE,
366 PIXMAN_OP_DISJOINT_XOR,
367 PIXMAN_OP_CONJOINT_CLEAR,
368 PIXMAN_OP_CONJOINT_SRC,
369 PIXMAN_OP_CONJOINT_DST,
370 PIXMAN_OP_CONJOINT_OVER,
371 PIXMAN_OP_CONJOINT_OVER_REVERSE,
372 PIXMAN_OP_CONJOINT_IN,
373 PIXMAN_OP_CONJOINT_IN_REVERSE,
374 PIXMAN_OP_CONJOINT_OUT,
375 PIXMAN_OP_CONJOINT_OUT_REVERSE,
376 PIXMAN_OP_CONJOINT_ATOP,
377 PIXMAN_OP_CONJOINT_ATOP_REVERSE,
378 PIXMAN_OP_CONJOINT_XOR,
384 PIXMAN_OP_COLOR_DODGE,
385 PIXMAN_OP_COLOR_BURN,
386 PIXMAN_OP_HARD_LIGHT,
387 PIXMAN_OP_DIFFERENCE,
389 #if 0 /* these use floating point math and are not always bitexact on different platforms */
390 PIXMAN_OP_SOFT_LIGHT,
392 PIXMAN_OP_HSL_SATURATION,
394 PIXMAN_OP_HSL_LUMINOSITY,
398 static pixman_format_code_t img_fmt_list[] = {
429 #if 0 /* using these crashes the test */
448 static pixman_format_code_t mask_fmt_list[] = {
458 * Composite operation with pseudorandom images
461 test_composite (uint32_t initcrc, int testnum, int verbose)
464 pixman_image_t *src_img = NULL;
465 pixman_image_t *dst_img = NULL;
466 pixman_image_t *mask_img = NULL;
467 int src_width, src_height;
468 int dst_width, dst_height;
469 int src_stride, dst_stride;
474 pixman_format_code_t src_fmt, dst_fmt, mask_fmt;
477 int max_width, max_height, max_extra_stride;
479 max_width = max_height = 24 + testnum / 10000;
480 max_extra_stride = 4 + testnum / 1000000;
488 if (max_extra_stride > 8)
489 max_extra_stride = 8;
493 op = op_list[lcg_rand_n (sizeof (op_list) / sizeof (op_list[0]))];
498 src_img = create_random_image (img_fmt_list, max_width, max_height,
499 max_extra_stride, &src_fmt);
504 src_img = create_random_image (img_fmt_list, 1, 1,
505 max_extra_stride, &src_fmt);
507 pixman_image_set_repeat (src_img, PIXMAN_REPEAT_NORMAL);
510 dst_img = create_random_image (img_fmt_list, max_width, max_height,
511 max_extra_stride, &dst_fmt);
520 mask_img = create_random_image (mask_fmt_list, max_width, max_height,
521 max_extra_stride, &mask_fmt);
526 mask_img = create_random_image (mask_fmt_list, 1, 1,
527 max_extra_stride, &mask_fmt);
528 pixman_image_set_repeat (mask_img, PIXMAN_REPEAT_NORMAL);
532 pixman_image_set_component_alpha (mask_img, 1);
535 src_width = pixman_image_get_width (src_img);
536 src_height = pixman_image_get_height (src_img);
537 src_stride = pixman_image_get_stride (src_img);
539 dst_width = pixman_image_get_width (dst_img);
540 dst_height = pixman_image_get_height (dst_img);
541 dst_stride = pixman_image_get_stride (dst_img);
543 dstbuf = pixman_image_get_data (dst_img);
545 src_x = lcg_rand_n (src_width);
546 src_y = lcg_rand_n (src_height);
547 dst_x = lcg_rand_n (dst_width);
548 dst_y = lcg_rand_n (dst_height);
550 w = lcg_rand_n (dst_width - dst_x + 1);
551 h = lcg_rand_n (dst_height - dst_y + 1);
555 printf ("op=%d, src_fmt=%08X, dst_fmt=%08X, mask_fmt=%08X\n",
556 op, src_fmt, dst_fmt, mask_fmt);
557 printf ("src_width=%d, src_height=%d, dst_width=%d, dst_height=%d\n",
558 src_width, src_height, dst_width, dst_height);
559 printf ("src_x=%d, src_y=%d, dst_x=%d, dst_y=%d\n",
560 src_x, src_y, dst_x, dst_y);
561 printf ("src_stride=%d, dst_stride=%d\n",
562 src_stride, dst_stride);
563 printf ("w=%d, h=%d\n", w, h);
566 pixman_image_composite (op, src_img, mask_img, dst_img,
567 src_x, src_y, src_x, src_y, dst_x, dst_y, w, h);
574 for (i = 0; i < dst_height; i++)
576 for (j = 0; j < dst_stride; j++)
578 if (j == (dst_width * PIXMAN_FORMAT_BPP (dst_fmt) + 7) / 8)
581 printf ("%02X ", *((uint8_t *)dstbuf + i * dst_stride + j));
588 free_random_image (initcrc, src_img, -1);
589 crc32 = free_random_image (initcrc, dst_img, dst_fmt);
592 free_random_image (initcrc, mask_img, -1);
598 main (int argc, char *argv[])
600 int i, n1 = 1, n2 = 0;
602 int verbose = getenv ("VERBOSE") != NULL;
621 crc = test_composite (0, abs (n2), 1);
622 printf ("crc32=%08X\n", crc);
626 for (i = n1; i <= n2; i++)
628 crc = test_composite (crc, i, 0);
631 printf ("%d: %08X\n", i, crc);
633 printf ("crc32=%08X\n", crc);
637 /* Predefined value for running with all the fastpath functions
638 disabled. It needs to be updated every time when changes are
639 introduced to this program or behavior of pixman changes! */
640 if (crc == 0xFE1244BF)
642 printf ("blitters test passed\n");
646 printf ("blitters test failed!\n");