1/* 2 * Test program, which can detect some problems with nearest neighbour 3 * and bilinear scaling in pixman. Testing is done by running lots 4 * of random SRC and OVER compositing operations a8r8g8b8, x8a8r8g8b8 5 * and r5g6b5 color formats. 6 * 7 * Script 'fuzzer-find-diff.pl' can be used to narrow down the problem in 8 * the case of test failure. 9 */ 10#include <stdlib.h> 11#include <stdio.h> 12#include "utils.h" 13 14#define MAX_SRC_WIDTH 48 15#define MAX_SRC_HEIGHT 8 16#define MAX_DST_WIDTH 48 17#define MAX_DST_HEIGHT 8 18#define MAX_STRIDE 4 19 20/* 21 * Composite operation with pseudorandom images 22 */ 23 24static pixman_format_code_t 25get_format (int bpp) 26{ 27 if (bpp == 4) 28 { 29 switch (prng_rand_n (4)) 30 { 31 default: 32 case 0: 33 return PIXMAN_a8r8g8b8; 34 case 1: 35 return PIXMAN_x8r8g8b8; 36 case 2: 37 return PIXMAN_a8b8g8r8; 38 case 3: 39 return PIXMAN_x8b8g8r8; 40 } 41 } 42 else 43 { 44 return PIXMAN_r5g6b5; 45 } 46} 47 48uint32_t 49test_composite (int testnum, 50 int verbose) 51{ 52 int i; 53 pixman_image_t * src_img; 54 pixman_image_t * mask_img; 55 pixman_image_t * dst_img; 56 pixman_transform_t transform; 57 pixman_region16_t clip; 58 int src_width, src_height; 59 int mask_width, mask_height; 60 int dst_width, dst_height; 61 int src_stride, mask_stride, dst_stride; 62 int src_x, src_y; 63 int mask_x, mask_y; 64 int dst_x, dst_y; 65 int src_bpp; 66 int mask_bpp = 1; 67 int dst_bpp; 68 int w, h; 69 pixman_fixed_t scale_x = 65536, scale_y = 65536; 70 pixman_fixed_t translate_x = 0, translate_y = 0; 71 pixman_fixed_t mask_scale_x = 65536, mask_scale_y = 65536; 72 pixman_fixed_t mask_translate_x = 0, mask_translate_y = 0; 73 pixman_op_t op; 74 pixman_repeat_t repeat = PIXMAN_REPEAT_NONE; 75 pixman_repeat_t mask_repeat = PIXMAN_REPEAT_NONE; 76 pixman_format_code_t src_fmt, mask_fmt, dst_fmt; 77 uint32_t * srcbuf; 78 uint32_t * dstbuf; 79 uint32_t * maskbuf; 80 uint32_t crc32; 81 FLOAT_REGS_CORRUPTION_DETECTOR_START (); 82 83 prng_srand (testnum); 84 85 src_bpp = (prng_rand_n (2) == 0) ? 2 : 4; 86 dst_bpp = (prng_rand_n (2) == 0) ? 2 : 4; 87 switch (prng_rand_n (3)) 88 { 89 case 0: 90 op = PIXMAN_OP_SRC; 91 break; 92 case 1: 93 op = PIXMAN_OP_OVER; 94 break; 95 default: 96 op = PIXMAN_OP_ADD; 97 break; 98 } 99 100 src_width = prng_rand_n (MAX_SRC_WIDTH) + 1; 101 src_height = prng_rand_n (MAX_SRC_HEIGHT) + 1; 102 103 if (prng_rand_n (2)) 104 { 105 mask_width = prng_rand_n (MAX_SRC_WIDTH) + 1; 106 mask_height = prng_rand_n (MAX_SRC_HEIGHT) + 1; 107 } 108 else 109 { 110 mask_width = mask_height = 1; 111 } 112 113 dst_width = prng_rand_n (MAX_DST_WIDTH) + 1; 114 dst_height = prng_rand_n (MAX_DST_HEIGHT) + 1; 115 src_stride = src_width * src_bpp + prng_rand_n (MAX_STRIDE) * src_bpp; 116 mask_stride = mask_width * mask_bpp + prng_rand_n (MAX_STRIDE) * mask_bpp; 117 dst_stride = dst_width * dst_bpp + prng_rand_n (MAX_STRIDE) * dst_bpp; 118 119 if (src_stride & 3) 120 src_stride += 2; 121 122 if (mask_stride & 1) 123 mask_stride += 1; 124 if (mask_stride & 2) 125 mask_stride += 2; 126 127 if (dst_stride & 3) 128 dst_stride += 2; 129 130 src_x = -(src_width / 4) + prng_rand_n (src_width * 3 / 2); 131 src_y = -(src_height / 4) + prng_rand_n (src_height * 3 / 2); 132 mask_x = -(mask_width / 4) + prng_rand_n (mask_width * 3 / 2); 133 mask_y = -(mask_height / 4) + prng_rand_n (mask_height * 3 / 2); 134 dst_x = -(dst_width / 4) + prng_rand_n (dst_width * 3 / 2); 135 dst_y = -(dst_height / 4) + prng_rand_n (dst_height * 3 / 2); 136 w = prng_rand_n (dst_width * 3 / 2 - dst_x); 137 h = prng_rand_n (dst_height * 3 / 2 - dst_y); 138 139 srcbuf = (uint32_t *)malloc (src_stride * src_height); 140 maskbuf = (uint32_t *)malloc (mask_stride * mask_height); 141 dstbuf = (uint32_t *)malloc (dst_stride * dst_height); 142 143 prng_randmemset (srcbuf, src_stride * src_height, 0); 144 prng_randmemset (maskbuf, mask_stride * mask_height, 0); 145 prng_randmemset (dstbuf, dst_stride * dst_height, 0); 146 147 src_fmt = get_format (src_bpp); 148 mask_fmt = PIXMAN_a8; 149 dst_fmt = get_format (dst_bpp); 150 151 if (prng_rand_n (2)) 152 { 153 srcbuf += (src_stride / 4) * (src_height - 1); 154 src_stride = - src_stride; 155 } 156 157 if (prng_rand_n (2)) 158 { 159 maskbuf += (mask_stride / 4) * (mask_height - 1); 160 mask_stride = - mask_stride; 161 } 162 163 if (prng_rand_n (2)) 164 { 165 dstbuf += (dst_stride / 4) * (dst_height - 1); 166 dst_stride = - dst_stride; 167 } 168 169 src_img = pixman_image_create_bits ( 170 src_fmt, src_width, src_height, srcbuf, src_stride); 171 172 mask_img = pixman_image_create_bits ( 173 mask_fmt, mask_width, mask_height, maskbuf, mask_stride); 174 175 dst_img = pixman_image_create_bits ( 176 dst_fmt, dst_width, dst_height, dstbuf, dst_stride); 177 178 image_endian_swap (src_img); 179 image_endian_swap (dst_img); 180 181 if (prng_rand_n (4) > 0) 182 { 183 scale_x = -32768 * 3 + prng_rand_n (65536 * 5); 184 scale_y = -32768 * 3 + prng_rand_n (65536 * 5); 185 translate_x = prng_rand_n (65536); 186 translate_y = prng_rand_n (65536); 187 pixman_transform_init_scale (&transform, scale_x, scale_y); 188 pixman_transform_translate (&transform, NULL, translate_x, translate_y); 189 pixman_image_set_transform (src_img, &transform); 190 } 191 192 if (prng_rand_n (2) > 0) 193 { 194 mask_scale_x = -32768 * 3 + prng_rand_n (65536 * 5); 195 mask_scale_y = -32768 * 3 + prng_rand_n (65536 * 5); 196 mask_translate_x = prng_rand_n (65536); 197 mask_translate_y = prng_rand_n (65536); 198 pixman_transform_init_scale (&transform, mask_scale_x, mask_scale_y); 199 pixman_transform_translate (&transform, NULL, mask_translate_x, mask_translate_y); 200 pixman_image_set_transform (mask_img, &transform); 201 } 202 203 switch (prng_rand_n (4)) 204 { 205 case 0: 206 mask_repeat = PIXMAN_REPEAT_NONE; 207 break; 208 209 case 1: 210 mask_repeat = PIXMAN_REPEAT_NORMAL; 211 break; 212 213 case 2: 214 mask_repeat = PIXMAN_REPEAT_PAD; 215 break; 216 217 case 3: 218 mask_repeat = PIXMAN_REPEAT_REFLECT; 219 break; 220 221 default: 222 break; 223 } 224 pixman_image_set_repeat (mask_img, mask_repeat); 225 226 switch (prng_rand_n (4)) 227 { 228 case 0: 229 repeat = PIXMAN_REPEAT_NONE; 230 break; 231 232 case 1: 233 repeat = PIXMAN_REPEAT_NORMAL; 234 break; 235 236 case 2: 237 repeat = PIXMAN_REPEAT_PAD; 238 break; 239 240 case 3: 241 repeat = PIXMAN_REPEAT_REFLECT; 242 break; 243 244 default: 245 break; 246 } 247 pixman_image_set_repeat (src_img, repeat); 248 249 if (prng_rand_n (2)) 250 pixman_image_set_filter (src_img, PIXMAN_FILTER_NEAREST, NULL, 0); 251 else 252 pixman_image_set_filter (src_img, PIXMAN_FILTER_BILINEAR, NULL, 0); 253 254 if (prng_rand_n (2)) 255 pixman_image_set_filter (mask_img, PIXMAN_FILTER_NEAREST, NULL, 0); 256 else 257 pixman_image_set_filter (mask_img, PIXMAN_FILTER_BILINEAR, NULL, 0); 258 259 if (prng_rand_n (8) == 0) 260 { 261 pixman_box16_t clip_boxes[2]; 262 int n = prng_rand_n (2) + 1; 263 264 for (i = 0; i < n; i++) 265 { 266 clip_boxes[i].x1 = prng_rand_n (src_width); 267 clip_boxes[i].y1 = prng_rand_n (src_height); 268 clip_boxes[i].x2 = 269 clip_boxes[i].x1 + prng_rand_n (src_width - clip_boxes[i].x1); 270 clip_boxes[i].y2 = 271 clip_boxes[i].y1 + prng_rand_n (src_height - clip_boxes[i].y1); 272 273 if (verbose) 274 { 275 printf ("source clip box: [%d,%d-%d,%d]\n", 276 clip_boxes[i].x1, clip_boxes[i].y1, 277 clip_boxes[i].x2, clip_boxes[i].y2); 278 } 279 } 280 281 pixman_region_init_rects (&clip, clip_boxes, n); 282 pixman_image_set_clip_region (src_img, &clip); 283 pixman_image_set_source_clipping (src_img, 1); 284 pixman_region_fini (&clip); 285 } 286 287 if (prng_rand_n (8) == 0) 288 { 289 pixman_box16_t clip_boxes[2]; 290 int n = prng_rand_n (2) + 1; 291 292 for (i = 0; i < n; i++) 293 { 294 clip_boxes[i].x1 = prng_rand_n (mask_width); 295 clip_boxes[i].y1 = prng_rand_n (mask_height); 296 clip_boxes[i].x2 = 297 clip_boxes[i].x1 + prng_rand_n (mask_width - clip_boxes[i].x1); 298 clip_boxes[i].y2 = 299 clip_boxes[i].y1 + prng_rand_n (mask_height - clip_boxes[i].y1); 300 301 if (verbose) 302 { 303 printf ("mask clip box: [%d,%d-%d,%d]\n", 304 clip_boxes[i].x1, clip_boxes[i].y1, 305 clip_boxes[i].x2, clip_boxes[i].y2); 306 } 307 } 308 309 pixman_region_init_rects (&clip, clip_boxes, n); 310 pixman_image_set_clip_region (mask_img, &clip); 311 pixman_image_set_source_clipping (mask_img, 1); 312 pixman_region_fini (&clip); 313 } 314 315 if (prng_rand_n (8) == 0) 316 { 317 pixman_box16_t clip_boxes[2]; 318 int n = prng_rand_n (2) + 1; 319 for (i = 0; i < n; i++) 320 { 321 clip_boxes[i].x1 = prng_rand_n (dst_width); 322 clip_boxes[i].y1 = prng_rand_n (dst_height); 323 clip_boxes[i].x2 = 324 clip_boxes[i].x1 + prng_rand_n (dst_width - clip_boxes[i].x1); 325 clip_boxes[i].y2 = 326 clip_boxes[i].y1 + prng_rand_n (dst_height - clip_boxes[i].y1); 327 328 if (verbose) 329 { 330 printf ("destination clip box: [%d,%d-%d,%d]\n", 331 clip_boxes[i].x1, clip_boxes[i].y1, 332 clip_boxes[i].x2, clip_boxes[i].y2); 333 } 334 } 335 pixman_region_init_rects (&clip, clip_boxes, n); 336 pixman_image_set_clip_region (dst_img, &clip); 337 pixman_region_fini (&clip); 338 } 339 340 if (prng_rand_n (2) == 0) 341 { 342 mask_fmt = PIXMAN_null; 343 pixman_image_unref (mask_img); 344 mask_img = NULL; 345 mask_x = 0; 346 mask_y = 0; 347 } 348 349 if (verbose) 350 { 351 printf ("op=%s, src_fmt=%s, mask_fmt=%s, dst_fmt=%s\n", 352 operator_name (op), format_name (src_fmt), 353 format_name (mask_fmt), format_name (dst_fmt)); 354 printf ("scale_x=%d, scale_y=%d, repeat=%d, filter=%d\n", 355 scale_x, scale_y, repeat, src_img->common.filter); 356 printf ("translate_x=%d, translate_y=%d\n", 357 translate_x, translate_y); 358 if (mask_fmt != PIXMAN_null) 359 { 360 printf ("mask_scale_x=%d, mask_scale_y=%d, " 361 "mask_repeat=%d, mask_filter=%d\n", 362 mask_scale_x, mask_scale_y, mask_repeat, 363 mask_img->common.filter); 364 printf ("mask_translate_x=%d, mask_translate_y=%d\n", 365 mask_translate_x, mask_translate_y); 366 } 367 printf ("src_width=%d, src_height=%d, src_x=%d, src_y=%d\n", 368 src_width, src_height, src_x, src_y); 369 if (mask_fmt != PIXMAN_null) 370 { 371 printf ("mask_width=%d, mask_height=%d, mask_x=%d, mask_y=%d\n", 372 mask_width, mask_height, mask_x, mask_y); 373 } 374 printf ("dst_width=%d, dst_height=%d, dst_x=%d, dst_y=%d\n", 375 dst_width, dst_height, dst_x, dst_y); 376 printf ("w=%d, h=%d\n", w, h); 377 } 378 379 pixman_image_composite (op, src_img, mask_img, dst_img, 380 src_x, src_y, mask_x, mask_y, dst_x, dst_y, w, h); 381 382 crc32 = compute_crc32_for_image (0, dst_img); 383 384 if (verbose) 385 print_image (dst_img); 386 387 pixman_image_unref (src_img); 388 if (mask_img != NULL) 389 pixman_image_unref (mask_img); 390 pixman_image_unref (dst_img); 391 392 if (src_stride < 0) 393 srcbuf += (src_stride / 4) * (src_height - 1); 394 395 if (mask_stride < 0) 396 maskbuf += (mask_stride / 4) * (mask_height - 1); 397 398 if (dst_stride < 0) 399 dstbuf += (dst_stride / 4) * (dst_height - 1); 400 401 free (srcbuf); 402 free (maskbuf); 403 free (dstbuf); 404 405 FLOAT_REGS_CORRUPTION_DETECTOR_FINISH (); 406 return crc32; 407} 408 409#if BILINEAR_INTERPOLATION_BITS == 7 410#define CHECKSUM 0x92E0F068 411#elif BILINEAR_INTERPOLATION_BITS == 4 412#define CHECKSUM 0x8EFFA1E5 413#else 414#define CHECKSUM 0x00000000 415#endif 416 417int 418main (int argc, const char *argv[]) 419{ 420 pixman_disable_out_of_bounds_workaround (); 421 422 return fuzzer_test_main("scaling", 8000000, CHECKSUM, 423 test_composite, argc, argv); 424} 425