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;
53 /*----------------------------------------------------------------------------*\
54 * CRC-32 version 2.0.0 by Craig Bruce, 2006-04-29.
56 * This program generates the CRC-32 values for the files named in the
57 * command-line arguments. These are the same CRC-32 values used by GZIP,
58 * PKZIP, and ZMODEM. The Crc32_ComputeBuf () can also be detached and
61 * THIS PROGRAM IS PUBLIC-DOMAIN SOFTWARE.
63 * Based on the byte-oriented implementation "File Verification Using CRC"
64 * by Mark R. Nelson in Dr. Dobb's Journal, May 1992, pp. 64-67.
66 * v1.0.0: original release.
67 * v1.0.1: fixed printf formats.
68 * v1.0.2: fixed something else.
69 * v1.0.3: replaced CRC constant table by generator function.
70 * v1.0.4: reformatted code, made ANSI C. 1994-12-05.
71 * v2.0.0: rewrote to use memory buffer & static table, 2006-04-29.
72 \*----------------------------------------------------------------------------*/
74 /*----------------------------------------------------------------------------*\
76 * Crc32_ComputeBuf () - computes the CRC-32 value of a memory buffer
78 * Computes or accumulates the CRC-32 value for a memory buffer.
79 * The 'inCrc32' gives a previously accumulated CRC-32 value to allow
80 * a CRC to be generated for multiple sequential buffer-fuls of data.
81 * The 'inCrc32' for the first buffer must be zero.
83 * inCrc32 - accumulated CRC-32 value, must be 0 on first call
84 * buf - buffer to compute CRC-32 value for
85 * bufLen - number of bytes in buffer
87 * crc32 - computed CRC-32 value
89 * (no errors are possible)
90 \*----------------------------------------------------------------------------*/
93 compute_crc32 (uint32_t in_crc32,
97 static const uint32_t crc_table[256] = {
98 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F,
99 0xE963A535, 0x9E6495A3, 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
100 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2,
101 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
102 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9,
103 0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
104 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA, 0x42B2986C,
105 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
106 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423,
107 0xCFBA9599, 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
108 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, 0x76DC4190, 0x01DB7106,
109 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
110 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D,
111 0x91646C97, 0xE6635C01, 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
112 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950,
113 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
114 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7,
115 0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
116 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA,
117 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
118 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81,
119 0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
120 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, 0xE3630B12, 0x94643B84,
121 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
122 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB,
123 0x196C3671, 0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
124 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8, 0xA1D1937E,
125 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
126 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55,
127 0x316E8EEF, 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
128 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28,
129 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
130 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F,
131 0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
132 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242,
133 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
134 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69,
135 0x616BFFD3, 0x166CCF45, 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
136 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC,
137 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
138 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693,
139 0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
140 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
144 unsigned char * byte_buf;
147 /* accumulate crc32 for buffer */
148 crc32 = in_crc32 ^ 0xFFFFFFFF;
149 byte_buf = (unsigned char*) buf;
151 for (i = 0; i < buf_len; i++)
152 crc32 = (crc32 >> 8) ^ crc_table[(crc32 ^ byte_buf[i]) & 0xFF];
154 return (crc32 ^ 0xFFFFFFFF);
157 /* perform endian conversion of pixel data */
159 image_endian_swap (pixman_image_t *img, int bpp)
161 int stride = pixman_image_get_stride (img);
162 uint32_t *data = pixman_image_get_data (img);
163 int height = pixman_image_get_height (img);;
166 /* swap bytes only on big endian systems */
167 volatile uint16_t endian_check_var = 0x1234;
168 if (*(volatile uint8_t *)&endian_check_var != 0x12)
171 for (i = 0; i < height; i++)
173 uint8_t *line_data = (uint8_t *)data + stride * i;
174 /* swap bytes only for 16, 24 and 32 bpp for now */
178 for (j = 0; j < stride; j++)
181 ((line_data[j] & 0x80) >> 7) |
182 ((line_data[j] & 0x40) >> 5) |
183 ((line_data[j] & 0x20) >> 3) |
184 ((line_data[j] & 0x10) >> 1) |
185 ((line_data[j] & 0x08) << 1) |
186 ((line_data[j] & 0x04) << 3) |
187 ((line_data[j] & 0x02) << 5) |
188 ((line_data[j] & 0x01) << 7);
192 for (j = 0; j < stride; j++)
194 line_data[j] = (line_data[j] >> 4) | (line_data[j] << 4);
198 for (j = 0; j + 2 <= stride; j += 2)
200 char t1 = line_data[j + 0];
201 char t2 = line_data[j + 1];
203 line_data[j + 1] = t1;
204 line_data[j + 0] = t2;
208 for (j = 0; j + 3 <= stride; j += 3)
210 char t1 = line_data[j + 0];
211 char t2 = line_data[j + 1];
212 char t3 = line_data[j + 2];
214 line_data[j + 2] = t1;
215 line_data[j + 1] = t2;
216 line_data[j + 0] = t3;
220 for (j = 0; j + 4 <= stride; j += 4)
222 char t1 = line_data[j + 0];
223 char t2 = line_data[j + 1];
224 char t3 = line_data[j + 2];
225 char t4 = line_data[j + 3];
227 line_data[j + 3] = t1;
228 line_data[j + 2] = t2;
229 line_data[j + 1] = t3;
230 line_data[j + 0] = t4;
239 /* Create random image for testing purposes */
240 static pixman_image_t *
241 create_random_image (pixman_format_code_t *allowed_formats,
244 int max_extra_stride,
245 pixman_format_code_t *used_fmt)
247 int n = 0, i, width, height, stride;
248 pixman_format_code_t fmt;
252 while (allowed_formats[n] != -1)
254 fmt = allowed_formats[lcg_rand_n (n)];
255 width = lcg_rand_n (max_width) + 1;
256 height = lcg_rand_n (max_height) + 1;
257 stride = (width * PIXMAN_FORMAT_BPP (fmt) + 7) / 8 +
258 lcg_rand_n (max_extra_stride + 1);
259 stride = (stride + 3) & ~3;
261 /* do the allocation */
262 buf = (uint32_t *)memalign (64, stride * height);
264 /* initialize image with random data */
265 for (i = 0; i < stride * height; i++)
267 /* generation is biased to having more 0 or 255 bytes as
268 * they are more likely to be special-cased in code
270 *((uint8_t *)buf + i) = lcg_rand_n (4) ? lcg_rand_n (256) :
271 (lcg_rand_n (2) ? 0 : 255);
274 img = pixman_image_create_bits (fmt, width, height, buf, stride);
276 image_endian_swap (img, PIXMAN_FORMAT_BPP (fmt));
278 if (used_fmt) *used_fmt = fmt;
282 /* Free random image, and optionally update crc32 based on its data */
284 free_random_image (uint32_t initcrc,
286 pixman_format_code_t fmt)
289 int stride = pixman_image_get_stride (img);
290 uint32_t *data = pixman_image_get_data (img);
291 int height = pixman_image_get_height (img);;
295 /* mask unused 'x' part */
296 if (PIXMAN_FORMAT_BPP (fmt) - PIXMAN_FORMAT_DEPTH (fmt) &&
297 PIXMAN_FORMAT_DEPTH (fmt) != 0)
300 uint32_t *data = pixman_image_get_data (img);
301 uint32_t mask = (1 << PIXMAN_FORMAT_DEPTH (fmt)) - 1;
303 for (i = 0; i < 32; i++)
304 mask |= mask << (i * PIXMAN_FORMAT_BPP (fmt));
306 for (i = 0; i < stride * height / 4; i++)
310 /* swap endiannes in order to provide identical results on both big
311 * and litte endian systems
313 image_endian_swap (img, PIXMAN_FORMAT_BPP (fmt));
314 crc32 = compute_crc32 (initcrc, data, stride * height);
317 pixman_image_unref (img);
323 static pixman_op_t op_list[] = {
331 PIXMAN_OP_OVER_REVERSE,
333 PIXMAN_OP_IN_REVERSE,
335 PIXMAN_OP_OUT_REVERSE,
337 PIXMAN_OP_ATOP_REVERSE,
341 PIXMAN_OP_DISJOINT_CLEAR,
342 PIXMAN_OP_DISJOINT_SRC,
343 PIXMAN_OP_DISJOINT_DST,
344 PIXMAN_OP_DISJOINT_OVER,
345 PIXMAN_OP_DISJOINT_OVER_REVERSE,
346 PIXMAN_OP_DISJOINT_IN,
347 PIXMAN_OP_DISJOINT_IN_REVERSE,
348 PIXMAN_OP_DISJOINT_OUT,
349 PIXMAN_OP_DISJOINT_OUT_REVERSE,
350 PIXMAN_OP_DISJOINT_ATOP,
351 PIXMAN_OP_DISJOINT_ATOP_REVERSE,
352 PIXMAN_OP_DISJOINT_XOR,
353 PIXMAN_OP_CONJOINT_CLEAR,
354 PIXMAN_OP_CONJOINT_SRC,
355 PIXMAN_OP_CONJOINT_DST,
356 PIXMAN_OP_CONJOINT_OVER,
357 PIXMAN_OP_CONJOINT_OVER_REVERSE,
358 PIXMAN_OP_CONJOINT_IN,
359 PIXMAN_OP_CONJOINT_IN_REVERSE,
360 PIXMAN_OP_CONJOINT_OUT,
361 PIXMAN_OP_CONJOINT_OUT_REVERSE,
362 PIXMAN_OP_CONJOINT_ATOP,
363 PIXMAN_OP_CONJOINT_ATOP_REVERSE,
364 PIXMAN_OP_CONJOINT_XOR,
370 PIXMAN_OP_COLOR_DODGE,
371 PIXMAN_OP_COLOR_BURN,
372 PIXMAN_OP_HARD_LIGHT,
373 PIXMAN_OP_DIFFERENCE,
375 #if 0 /* these use floating point math and are not always bitexact on different platforms */
376 PIXMAN_OP_SOFT_LIGHT,
378 PIXMAN_OP_HSL_SATURATION,
380 PIXMAN_OP_HSL_LUMINOSITY,
384 static pixman_format_code_t img_fmt_list[] = {
415 #if 0 /* using these crashes the test */
434 static pixman_format_code_t mask_fmt_list[] = {
444 * Composite operation with pseudorandom images
447 test_composite (uint32_t initcrc, int testnum, int verbose)
450 pixman_image_t *src_img = NULL;
451 pixman_image_t *dst_img = NULL;
452 pixman_image_t *mask_img = NULL;
453 int src_width, src_height;
454 int dst_width, dst_height;
455 int src_stride, dst_stride;
460 pixman_format_code_t src_fmt, dst_fmt, mask_fmt;
463 int max_width, max_height, max_extra_stride;
465 max_width = max_height = 24 + testnum / 10000;
466 max_extra_stride = 4 + testnum / 1000000;
474 if (max_extra_stride > 8)
475 max_extra_stride = 8;
479 op = op_list[lcg_rand_n (sizeof (op_list) / sizeof (op_list[0]))];
484 src_img = create_random_image (img_fmt_list, max_width, max_height,
485 max_extra_stride, &src_fmt);
490 src_img = create_random_image (img_fmt_list, 1, 1,
491 max_extra_stride, &src_fmt);
493 pixman_image_set_repeat (src_img, PIXMAN_REPEAT_NORMAL);
496 dst_img = create_random_image (img_fmt_list, max_width, max_height,
497 max_extra_stride, &dst_fmt);
506 mask_img = create_random_image (mask_fmt_list, max_width, max_height,
507 max_extra_stride, &mask_fmt);
512 mask_img = create_random_image (mask_fmt_list, 1, 1,
513 max_extra_stride, &mask_fmt);
514 pixman_image_set_repeat (mask_img, PIXMAN_REPEAT_NORMAL);
518 pixman_image_set_component_alpha (mask_img, 1);
521 src_width = pixman_image_get_width (src_img);
522 src_height = pixman_image_get_height (src_img);
523 src_stride = pixman_image_get_stride (src_img);
525 dst_width = pixman_image_get_width (dst_img);
526 dst_height = pixman_image_get_height (dst_img);
527 dst_stride = pixman_image_get_stride (dst_img);
529 dstbuf = pixman_image_get_data (dst_img);
531 src_x = lcg_rand_n (src_width);
532 src_y = lcg_rand_n (src_height);
533 dst_x = lcg_rand_n (dst_width);
534 dst_y = lcg_rand_n (dst_height);
536 w = lcg_rand_n (dst_width - dst_x + 1);
537 h = lcg_rand_n (dst_height - dst_y + 1);
541 printf ("op=%d, src_fmt=%08X, dst_fmt=%08X, mask_fmt=%08X\n",
542 op, src_fmt, dst_fmt, mask_fmt);
543 printf ("src_width=%d, src_height=%d, dst_width=%d, dst_height=%d\n",
544 src_width, src_height, dst_width, dst_height);
545 printf ("src_x=%d, src_y=%d, dst_x=%d, dst_y=%d\n",
546 src_x, src_y, dst_x, dst_y);
547 printf ("src_stride=%d, dst_stride=%d\n",
548 src_stride, dst_stride);
549 printf ("w=%d, h=%d\n", w, h);
552 pixman_image_composite (op, src_img, mask_img, dst_img,
553 src_x, src_y, src_x, src_y, dst_x, dst_y, w, h);
560 for (i = 0; i < dst_height; i++)
562 for (j = 0; j < dst_stride; j++)
564 if (j == (dst_width * PIXMAN_FORMAT_BPP (dst_fmt) + 7) / 8)
567 printf ("%02X ", *((uint8_t *)dstbuf + i * dst_stride + j));
574 free_random_image (initcrc, src_img, -1);
575 crc32 = free_random_image (initcrc, dst_img, dst_fmt);
578 free_random_image (initcrc, mask_img, -1);
584 main (int argc, char *argv[])
586 int i, n1 = 1, n2 = 0;
588 int verbose = getenv ("VERBOSE") != NULL;
607 crc = test_composite (0, abs (n2), 1);
608 printf ("crc32=%08X\n", crc);
612 for (i = n1; i <= n2; i++)
614 crc = test_composite (crc, i, 0);
617 printf ("%d: %08X\n", i, crc);
619 printf ("crc32=%08X\n", crc);
623 /* Predefined value for running with all the fastpath functions
624 disabled. It needs to be updated every time when changes are
625 introduced to this program or behavior of pixman changes! */
626 if (crc == 0xFE1244BF)
628 printf ("blitters test passed\n");
632 printf ("blitters test failed!\n");