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 24 static pixman_format_code_t 25 get_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 48 uint32_t 49 test_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, 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 dst_fmt = get_format (dst_bpp); 149 150 src_img = pixman_image_create_bits ( 151 src_fmt, src_width, src_height, srcbuf, src_stride); 152 153 mask_img = pixman_image_create_bits ( 154 PIXMAN_a8, mask_width, mask_height, maskbuf, mask_stride); 155 156 dst_img = pixman_image_create_bits ( 157 dst_fmt, dst_width, dst_height, dstbuf, dst_stride); 158 159 image_endian_swap (src_img); 160 image_endian_swap (dst_img); 161 162 if (prng_rand_n (4) > 0) 163 { 164 scale_x = -32768 * 3 + prng_rand_n (65536 * 5); 165 scale_y = -32768 * 3 + prng_rand_n (65536 * 5); 166 translate_x = prng_rand_n (65536); 167 translate_y = prng_rand_n (65536); 168 pixman_transform_init_scale (&transform, scale_x, scale_y); 169 pixman_transform_translate (&transform, NULL, translate_x, translate_y); 170 pixman_image_set_transform (src_img, &transform); 171 } 172 173 if (prng_rand_n (2) > 0) 174 { 175 mask_scale_x = -32768 * 3 + prng_rand_n (65536 * 5); 176 mask_scale_y = -32768 * 3 + prng_rand_n (65536 * 5); 177 mask_translate_x = prng_rand_n (65536); 178 mask_translate_y = prng_rand_n (65536); 179 pixman_transform_init_scale (&transform, mask_scale_x, mask_scale_y); 180 pixman_transform_translate (&transform, NULL, mask_translate_x, mask_translate_y); 181 pixman_image_set_transform (mask_img, &transform); 182 } 183 184 switch (prng_rand_n (4)) 185 { 186 case 0: 187 mask_repeat = PIXMAN_REPEAT_NONE; 188 break; 189 190 case 1: 191 mask_repeat = PIXMAN_REPEAT_NORMAL; 192 break; 193 194 case 2: 195 mask_repeat = PIXMAN_REPEAT_PAD; 196 break; 197 198 case 3: 199 mask_repeat = PIXMAN_REPEAT_REFLECT; 200 break; 201 202 default: 203 break; 204 } 205 pixman_image_set_repeat (mask_img, mask_repeat); 206 207 switch (prng_rand_n (4)) 208 { 209 case 0: 210 repeat = PIXMAN_REPEAT_NONE; 211 break; 212 213 case 1: 214 repeat = PIXMAN_REPEAT_NORMAL; 215 break; 216 217 case 2: 218 repeat = PIXMAN_REPEAT_PAD; 219 break; 220 221 case 3: 222 repeat = PIXMAN_REPEAT_REFLECT; 223 break; 224 225 default: 226 break; 227 } 228 pixman_image_set_repeat (src_img, repeat); 229 230 if (prng_rand_n (2)) 231 pixman_image_set_filter (src_img, PIXMAN_FILTER_NEAREST, NULL, 0); 232 else 233 pixman_image_set_filter (src_img, PIXMAN_FILTER_BILINEAR, NULL, 0); 234 235 if (prng_rand_n (2)) 236 pixman_image_set_filter (mask_img, PIXMAN_FILTER_NEAREST, NULL, 0); 237 else 238 pixman_image_set_filter (mask_img, PIXMAN_FILTER_BILINEAR, NULL, 0); 239 240 if (verbose) 241 { 242 printf ("src_fmt=%s, dst_fmt=%s\n", 243 format_name (src_fmt), format_name (dst_fmt)); 244 printf ("op=%s, scale_x=%d, scale_y=%d, repeat=%d\n", 245 operator_name (op), scale_x, scale_y, repeat); 246 printf ("translate_x=%d, translate_y=%d\n", 247 translate_x, translate_y); 248 printf ("src_width=%d, src_height=%d, dst_width=%d, dst_height=%d\n", 249 src_width, src_height, dst_width, dst_height); 250 printf ("src_x=%d, src_y=%d, dst_x=%d, dst_y=%d\n", 251 src_x, src_y, dst_x, dst_y); 252 printf ("w=%d, h=%d\n", w, h); 253 } 254 255 if (prng_rand_n (8) == 0) 256 { 257 pixman_box16_t clip_boxes[2]; 258 int n = prng_rand_n (2) + 1; 259 260 for (i = 0; i < n; i++) 261 { 262 clip_boxes[i].x1 = prng_rand_n (src_width); 263 clip_boxes[i].y1 = prng_rand_n (src_height); 264 clip_boxes[i].x2 = 265 clip_boxes[i].x1 + prng_rand_n (src_width - clip_boxes[i].x1); 266 clip_boxes[i].y2 = 267 clip_boxes[i].y1 + prng_rand_n (src_height - clip_boxes[i].y1); 268 269 if (verbose) 270 { 271 printf ("source clip box: [%d,%d-%d,%d]\n", 272 clip_boxes[i].x1, clip_boxes[i].y1, 273 clip_boxes[i].x2, clip_boxes[i].y2); 274 } 275 } 276 277 pixman_region_init_rects (&clip, clip_boxes, n); 278 pixman_image_set_clip_region (src_img, &clip); 279 pixman_image_set_source_clipping (src_img, 1); 280 pixman_region_fini (&clip); 281 } 282 283 if (prng_rand_n (8) == 0) 284 { 285 pixman_box16_t clip_boxes[2]; 286 int n = prng_rand_n (2) + 1; 287 288 for (i = 0; i < n; i++) 289 { 290 clip_boxes[i].x1 = prng_rand_n (mask_width); 291 clip_boxes[i].y1 = prng_rand_n (mask_height); 292 clip_boxes[i].x2 = 293 clip_boxes[i].x1 + prng_rand_n (mask_width - clip_boxes[i].x1); 294 clip_boxes[i].y2 = 295 clip_boxes[i].y1 + prng_rand_n (mask_height - clip_boxes[i].y1); 296 297 if (verbose) 298 { 299 printf ("mask clip box: [%d,%d-%d,%d]\n", 300 clip_boxes[i].x1, clip_boxes[i].y1, 301 clip_boxes[i].x2, clip_boxes[i].y2); 302 } 303 } 304 305 pixman_region_init_rects (&clip, clip_boxes, n); 306 pixman_image_set_clip_region (mask_img, &clip); 307 pixman_image_set_source_clipping (mask_img, 1); 308 pixman_region_fini (&clip); 309 } 310 311 if (prng_rand_n (8) == 0) 312 { 313 pixman_box16_t clip_boxes[2]; 314 int n = prng_rand_n (2) + 1; 315 for (i = 0; i < n; i++) 316 { 317 clip_boxes[i].x1 = prng_rand_n (dst_width); 318 clip_boxes[i].y1 = prng_rand_n (dst_height); 319 clip_boxes[i].x2 = 320 clip_boxes[i].x1 + prng_rand_n (dst_width - clip_boxes[i].x1); 321 clip_boxes[i].y2 = 322 clip_boxes[i].y1 + prng_rand_n (dst_height - clip_boxes[i].y1); 323 324 if (verbose) 325 { 326 printf ("destination clip box: [%d,%d-%d,%d]\n", 327 clip_boxes[i].x1, clip_boxes[i].y1, 328 clip_boxes[i].x2, clip_boxes[i].y2); 329 } 330 } 331 pixman_region_init_rects (&clip, clip_boxes, n); 332 pixman_image_set_clip_region (dst_img, &clip); 333 pixman_region_fini (&clip); 334 } 335 336 if (prng_rand_n (2) == 0) 337 pixman_image_composite (op, src_img, NULL, dst_img, 338 src_x, src_y, 0, 0, dst_x, dst_y, w, h); 339 else 340 pixman_image_composite (op, src_img, mask_img, dst_img, 341 src_x, src_y, mask_x, mask_y, dst_x, dst_y, w, h); 342 343 if (dst_fmt == PIXMAN_x8r8g8b8 || dst_fmt == PIXMAN_x8b8g8r8) 344 { 345 /* ignore unused part */ 346 for (i = 0; i < dst_stride * dst_height / 4; i++) 347 dstbuf[i] &= 0xFFFFFF; 348 } 349 350 image_endian_swap (dst_img); 351 352 if (verbose) 353 { 354 int j; 355 356 for (i = 0; i < dst_height; i++) 357 { 358 for (j = 0; j < dst_stride; j++) 359 printf ("%02X ", *((uint8_t *)dstbuf + i * dst_stride + j)); 360 361 printf ("\n"); 362 } 363 } 364 365 pixman_image_unref (src_img); 366 pixman_image_unref (mask_img); 367 pixman_image_unref (dst_img); 368 369 crc32 = compute_crc32 (0, dstbuf, dst_stride * dst_height); 370 free (srcbuf); 371 free (maskbuf); 372 free (dstbuf); 373 374 FLOAT_REGS_CORRUPTION_DETECTOR_FINISH (); 375 return crc32; 376 } 377 378 #if BILINEAR_INTERPOLATION_BITS == 8 379 #define CHECKSUM 0x9096E6B6 380 #elif BILINEAR_INTERPOLATION_BITS == 7 381 #define CHECKSUM 0xCE8EC6BA 382 #elif BILINEAR_INTERPOLATION_BITS == 4 383 #define CHECKSUM 0xAB1D39BE 384 #else 385 #define CHECKSUM 0x00000000 386 #endif 387 388 int 389 main (int argc, const char *argv[]) 390 { 391 pixman_disable_out_of_bounds_workaround (); 392 393 return fuzzer_test_main("scaling", 8000000, CHECKSUM, 394 test_composite, argc, argv); 395 } 396
