scaling-test.c revision de17ff4a
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, 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 if (prng_rand_n (2)) 151 { 152 srcbuf += (src_stride / 4) * (src_height - 1); 153 src_stride = - src_stride; 154 } 155 156 if (prng_rand_n (2)) 157 { 158 maskbuf += (mask_stride / 4) * (mask_height - 1); 159 mask_stride = - mask_stride; 160 } 161 162 if (prng_rand_n (2)) 163 { 164 dstbuf += (dst_stride / 4) * (dst_height - 1); 165 dst_stride = - dst_stride; 166 } 167 168 src_img = pixman_image_create_bits ( 169 src_fmt, src_width, src_height, srcbuf, src_stride); 170 171 mask_img = pixman_image_create_bits ( 172 PIXMAN_a8, mask_width, mask_height, maskbuf, mask_stride); 173 174 dst_img = pixman_image_create_bits ( 175 dst_fmt, dst_width, dst_height, dstbuf, dst_stride); 176 177 image_endian_swap (src_img); 178 image_endian_swap (dst_img); 179 180 if (prng_rand_n (4) > 0) 181 { 182 scale_x = -32768 * 3 + prng_rand_n (65536 * 5); 183 scale_y = -32768 * 3 + prng_rand_n (65536 * 5); 184 translate_x = prng_rand_n (65536); 185 translate_y = prng_rand_n (65536); 186 pixman_transform_init_scale (&transform, scale_x, scale_y); 187 pixman_transform_translate (&transform, NULL, translate_x, translate_y); 188 pixman_image_set_transform (src_img, &transform); 189 } 190 191 if (prng_rand_n (2) > 0) 192 { 193 mask_scale_x = -32768 * 3 + prng_rand_n (65536 * 5); 194 mask_scale_y = -32768 * 3 + prng_rand_n (65536 * 5); 195 mask_translate_x = prng_rand_n (65536); 196 mask_translate_y = prng_rand_n (65536); 197 pixman_transform_init_scale (&transform, mask_scale_x, mask_scale_y); 198 pixman_transform_translate (&transform, NULL, mask_translate_x, mask_translate_y); 199 pixman_image_set_transform (mask_img, &transform); 200 } 201 202 switch (prng_rand_n (4)) 203 { 204 case 0: 205 mask_repeat = PIXMAN_REPEAT_NONE; 206 break; 207 208 case 1: 209 mask_repeat = PIXMAN_REPEAT_NORMAL; 210 break; 211 212 case 2: 213 mask_repeat = PIXMAN_REPEAT_PAD; 214 break; 215 216 case 3: 217 mask_repeat = PIXMAN_REPEAT_REFLECT; 218 break; 219 220 default: 221 break; 222 } 223 pixman_image_set_repeat (mask_img, mask_repeat); 224 225 switch (prng_rand_n (4)) 226 { 227 case 0: 228 repeat = PIXMAN_REPEAT_NONE; 229 break; 230 231 case 1: 232 repeat = PIXMAN_REPEAT_NORMAL; 233 break; 234 235 case 2: 236 repeat = PIXMAN_REPEAT_PAD; 237 break; 238 239 case 3: 240 repeat = PIXMAN_REPEAT_REFLECT; 241 break; 242 243 default: 244 break; 245 } 246 pixman_image_set_repeat (src_img, repeat); 247 248 if (prng_rand_n (2)) 249 pixman_image_set_filter (src_img, PIXMAN_FILTER_NEAREST, NULL, 0); 250 else 251 pixman_image_set_filter (src_img, PIXMAN_FILTER_BILINEAR, NULL, 0); 252 253 if (prng_rand_n (2)) 254 pixman_image_set_filter (mask_img, PIXMAN_FILTER_NEAREST, NULL, 0); 255 else 256 pixman_image_set_filter (mask_img, PIXMAN_FILTER_BILINEAR, NULL, 0); 257 258 if (verbose) 259 { 260 printf ("src_fmt=%s, dst_fmt=%s\n", 261 format_name (src_fmt), format_name (dst_fmt)); 262 printf ("op=%s, scale_x=%d, scale_y=%d, repeat=%d\n", 263 operator_name (op), scale_x, scale_y, repeat); 264 printf ("translate_x=%d, translate_y=%d\n", 265 translate_x, translate_y); 266 printf ("src_width=%d, src_height=%d, dst_width=%d, dst_height=%d\n", 267 src_width, src_height, dst_width, dst_height); 268 printf ("src_x=%d, src_y=%d, dst_x=%d, dst_y=%d\n", 269 src_x, src_y, dst_x, dst_y); 270 printf ("w=%d, h=%d\n", w, h); 271 } 272 273 if (prng_rand_n (8) == 0) 274 { 275 pixman_box16_t clip_boxes[2]; 276 int n = prng_rand_n (2) + 1; 277 278 for (i = 0; i < n; i++) 279 { 280 clip_boxes[i].x1 = prng_rand_n (src_width); 281 clip_boxes[i].y1 = prng_rand_n (src_height); 282 clip_boxes[i].x2 = 283 clip_boxes[i].x1 + prng_rand_n (src_width - clip_boxes[i].x1); 284 clip_boxes[i].y2 = 285 clip_boxes[i].y1 + prng_rand_n (src_height - clip_boxes[i].y1); 286 287 if (verbose) 288 { 289 printf ("source clip box: [%d,%d-%d,%d]\n", 290 clip_boxes[i].x1, clip_boxes[i].y1, 291 clip_boxes[i].x2, clip_boxes[i].y2); 292 } 293 } 294 295 pixman_region_init_rects (&clip, clip_boxes, n); 296 pixman_image_set_clip_region (src_img, &clip); 297 pixman_image_set_source_clipping (src_img, 1); 298 pixman_region_fini (&clip); 299 } 300 301 if (prng_rand_n (8) == 0) 302 { 303 pixman_box16_t clip_boxes[2]; 304 int n = prng_rand_n (2) + 1; 305 306 for (i = 0; i < n; i++) 307 { 308 clip_boxes[i].x1 = prng_rand_n (mask_width); 309 clip_boxes[i].y1 = prng_rand_n (mask_height); 310 clip_boxes[i].x2 = 311 clip_boxes[i].x1 + prng_rand_n (mask_width - clip_boxes[i].x1); 312 clip_boxes[i].y2 = 313 clip_boxes[i].y1 + prng_rand_n (mask_height - clip_boxes[i].y1); 314 315 if (verbose) 316 { 317 printf ("mask clip box: [%d,%d-%d,%d]\n", 318 clip_boxes[i].x1, clip_boxes[i].y1, 319 clip_boxes[i].x2, clip_boxes[i].y2); 320 } 321 } 322 323 pixman_region_init_rects (&clip, clip_boxes, n); 324 pixman_image_set_clip_region (mask_img, &clip); 325 pixman_image_set_source_clipping (mask_img, 1); 326 pixman_region_fini (&clip); 327 } 328 329 if (prng_rand_n (8) == 0) 330 { 331 pixman_box16_t clip_boxes[2]; 332 int n = prng_rand_n (2) + 1; 333 for (i = 0; i < n; i++) 334 { 335 clip_boxes[i].x1 = prng_rand_n (dst_width); 336 clip_boxes[i].y1 = prng_rand_n (dst_height); 337 clip_boxes[i].x2 = 338 clip_boxes[i].x1 + prng_rand_n (dst_width - clip_boxes[i].x1); 339 clip_boxes[i].y2 = 340 clip_boxes[i].y1 + prng_rand_n (dst_height - clip_boxes[i].y1); 341 342 if (verbose) 343 { 344 printf ("destination clip box: [%d,%d-%d,%d]\n", 345 clip_boxes[i].x1, clip_boxes[i].y1, 346 clip_boxes[i].x2, clip_boxes[i].y2); 347 } 348 } 349 pixman_region_init_rects (&clip, clip_boxes, n); 350 pixman_image_set_clip_region (dst_img, &clip); 351 pixman_region_fini (&clip); 352 } 353 354 if (prng_rand_n (2) == 0) 355 pixman_image_composite (op, src_img, NULL, dst_img, 356 src_x, src_y, 0, 0, dst_x, dst_y, w, h); 357 else 358 pixman_image_composite (op, src_img, mask_img, dst_img, 359 src_x, src_y, mask_x, mask_y, dst_x, dst_y, w, h); 360 361 crc32 = compute_crc32_for_image (0, dst_img); 362 363 if (verbose) 364 print_image (dst_img); 365 366 pixman_image_unref (src_img); 367 pixman_image_unref (mask_img); 368 pixman_image_unref (dst_img); 369 370 if (src_stride < 0) 371 srcbuf += (src_stride / 4) * (src_height - 1); 372 373 if (mask_stride < 0) 374 maskbuf += (mask_stride / 4) * (mask_height - 1); 375 376 if (dst_stride < 0) 377 dstbuf += (dst_stride / 4) * (dst_height - 1); 378 379 free (srcbuf); 380 free (maskbuf); 381 free (dstbuf); 382 383 FLOAT_REGS_CORRUPTION_DETECTOR_FINISH (); 384 return crc32; 385} 386 387#if BILINEAR_INTERPOLATION_BITS == 7 388#define CHECKSUM 0x92E0F068 389#elif BILINEAR_INTERPOLATION_BITS == 4 390#define CHECKSUM 0x8EFFA1E5 391#else 392#define CHECKSUM 0x00000000 393#endif 394 395int 396main (int argc, const char *argv[]) 397{ 398 pixman_disable_out_of_bounds_workaround (); 399 400 return fuzzer_test_main("scaling", 8000000, CHECKSUM, 401 test_composite, argc, argv); 402} 403