scaling-test.c revision 9ad247e8
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 (lcg_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 lcg_srand (testnum); 84 85 src_bpp = (lcg_rand_n (2) == 0) ? 2 : 4; 86 dst_bpp = (lcg_rand_n (2) == 0) ? 2 : 4; 87 switch (lcg_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 = lcg_rand_n (MAX_SRC_WIDTH) + 1; 101 src_height = lcg_rand_n (MAX_SRC_HEIGHT) + 1; 102 103 if (lcg_rand_n (2)) 104 { 105 mask_width = lcg_rand_n (MAX_SRC_WIDTH) + 1; 106 mask_height = lcg_rand_n (MAX_SRC_HEIGHT) + 1; 107 } 108 else 109 { 110 mask_width = mask_height = 1; 111 } 112 113 dst_width = lcg_rand_n (MAX_DST_WIDTH) + 1; 114 dst_height = lcg_rand_n (MAX_DST_HEIGHT) + 1; 115 src_stride = src_width * src_bpp + lcg_rand_n (MAX_STRIDE) * src_bpp; 116 mask_stride = mask_width * mask_bpp + lcg_rand_n (MAX_STRIDE) * mask_bpp; 117 dst_stride = dst_width * dst_bpp + lcg_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) + lcg_rand_n (src_width * 3 / 2); 131 src_y = -(src_height / 4) + lcg_rand_n (src_height * 3 / 2); 132 mask_x = -(mask_width / 4) + lcg_rand_n (mask_width * 3 / 2); 133 mask_y = -(mask_height / 4) + lcg_rand_n (mask_height * 3 / 2); 134 dst_x = -(dst_width / 4) + lcg_rand_n (dst_width * 3 / 2); 135 dst_y = -(dst_height / 4) + lcg_rand_n (dst_height * 3 / 2); 136 w = lcg_rand_n (dst_width * 3 / 2 - dst_x); 137 h = lcg_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 for (i = 0; i < src_stride * src_height; i++) 144 *((uint8_t *)srcbuf + i) = lcg_rand_n (256); 145 146 for (i = 0; i < mask_stride * mask_height; i++) 147 *((uint8_t *)maskbuf + i) = lcg_rand_n (256); 148 149 for (i = 0; i < dst_stride * dst_height; i++) 150 *((uint8_t *)dstbuf + i) = lcg_rand_n (256); 151 152 src_fmt = get_format (src_bpp); 153 dst_fmt = get_format (dst_bpp); 154 155 src_img = pixman_image_create_bits ( 156 src_fmt, src_width, src_height, srcbuf, src_stride); 157 158 mask_img = pixman_image_create_bits ( 159 PIXMAN_a8, mask_width, mask_height, maskbuf, mask_stride); 160 161 dst_img = pixman_image_create_bits ( 162 dst_fmt, dst_width, dst_height, dstbuf, dst_stride); 163 164 image_endian_swap (src_img); 165 image_endian_swap (dst_img); 166 167 if (lcg_rand_n (4) > 0) 168 { 169 scale_x = -32768 * 3 + lcg_rand_N (65536 * 5); 170 scale_y = -32768 * 3 + lcg_rand_N (65536 * 5); 171 translate_x = lcg_rand_N (65536); 172 translate_y = lcg_rand_N (65536); 173 pixman_transform_init_scale (&transform, scale_x, scale_y); 174 pixman_transform_translate (&transform, NULL, translate_x, translate_y); 175 pixman_image_set_transform (src_img, &transform); 176 } 177 178 if (lcg_rand_n (2) > 0) 179 { 180 mask_scale_x = -32768 * 3 + lcg_rand_N (65536 * 5); 181 mask_scale_y = -32768 * 3 + lcg_rand_N (65536 * 5); 182 mask_translate_x = lcg_rand_N (65536); 183 mask_translate_y = lcg_rand_N (65536); 184 pixman_transform_init_scale (&transform, mask_scale_x, mask_scale_y); 185 pixman_transform_translate (&transform, NULL, mask_translate_x, mask_translate_y); 186 pixman_image_set_transform (mask_img, &transform); 187 } 188 189 switch (lcg_rand_n (4)) 190 { 191 case 0: 192 mask_repeat = PIXMAN_REPEAT_NONE; 193 break; 194 195 case 1: 196 mask_repeat = PIXMAN_REPEAT_NORMAL; 197 break; 198 199 case 2: 200 mask_repeat = PIXMAN_REPEAT_PAD; 201 break; 202 203 case 3: 204 mask_repeat = PIXMAN_REPEAT_REFLECT; 205 break; 206 207 default: 208 break; 209 } 210 pixman_image_set_repeat (mask_img, mask_repeat); 211 212 switch (lcg_rand_n (4)) 213 { 214 case 0: 215 repeat = PIXMAN_REPEAT_NONE; 216 break; 217 218 case 1: 219 repeat = PIXMAN_REPEAT_NORMAL; 220 break; 221 222 case 2: 223 repeat = PIXMAN_REPEAT_PAD; 224 break; 225 226 case 3: 227 repeat = PIXMAN_REPEAT_REFLECT; 228 break; 229 230 default: 231 break; 232 } 233 pixman_image_set_repeat (src_img, repeat); 234 235 if (lcg_rand_n (2)) 236 pixman_image_set_filter (src_img, PIXMAN_FILTER_NEAREST, NULL, 0); 237 else 238 pixman_image_set_filter (src_img, PIXMAN_FILTER_BILINEAR, NULL, 0); 239 240 if (lcg_rand_n (2)) 241 pixman_image_set_filter (mask_img, PIXMAN_FILTER_NEAREST, NULL, 0); 242 else 243 pixman_image_set_filter (mask_img, PIXMAN_FILTER_BILINEAR, NULL, 0); 244 245 if (verbose) 246 { 247 printf ("src_fmt=%08X, dst_fmt=%08X\n", src_fmt, dst_fmt); 248 printf ("op=%d, scale_x=%d, scale_y=%d, repeat=%d\n", 249 op, scale_x, scale_y, repeat); 250 printf ("translate_x=%d, translate_y=%d\n", 251 translate_x, translate_y); 252 printf ("src_width=%d, src_height=%d, dst_width=%d, dst_height=%d\n", 253 src_width, src_height, dst_width, dst_height); 254 printf ("src_x=%d, src_y=%d, dst_x=%d, dst_y=%d\n", 255 src_x, src_y, dst_x, dst_y); 256 printf ("w=%d, h=%d\n", w, h); 257 } 258 259 if (lcg_rand_n (8) == 0) 260 { 261 pixman_box16_t clip_boxes[2]; 262 int n = lcg_rand_n (2) + 1; 263 264 for (i = 0; i < n; i++) 265 { 266 clip_boxes[i].x1 = lcg_rand_n (src_width); 267 clip_boxes[i].y1 = lcg_rand_n (src_height); 268 clip_boxes[i].x2 = 269 clip_boxes[i].x1 + lcg_rand_n (src_width - clip_boxes[i].x1); 270 clip_boxes[i].y2 = 271 clip_boxes[i].y1 + lcg_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 (lcg_rand_n (8) == 0) 288 { 289 pixman_box16_t clip_boxes[2]; 290 int n = lcg_rand_n (2) + 1; 291 292 for (i = 0; i < n; i++) 293 { 294 clip_boxes[i].x1 = lcg_rand_n (mask_width); 295 clip_boxes[i].y1 = lcg_rand_n (mask_height); 296 clip_boxes[i].x2 = 297 clip_boxes[i].x1 + lcg_rand_n (mask_width - clip_boxes[i].x1); 298 clip_boxes[i].y2 = 299 clip_boxes[i].y1 + lcg_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 (lcg_rand_n (8) == 0) 316 { 317 pixman_box16_t clip_boxes[2]; 318 int n = lcg_rand_n (2) + 1; 319 for (i = 0; i < n; i++) 320 { 321 clip_boxes[i].x1 = lcg_rand_n (dst_width); 322 clip_boxes[i].y1 = lcg_rand_n (dst_height); 323 clip_boxes[i].x2 = 324 clip_boxes[i].x1 + lcg_rand_n (dst_width - clip_boxes[i].x1); 325 clip_boxes[i].y2 = 326 clip_boxes[i].y1 + lcg_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 (lcg_rand_n (2) == 0) 341 pixman_image_composite (op, src_img, NULL, dst_img, 342 src_x, src_y, 0, 0, dst_x, dst_y, w, h); 343 else 344 pixman_image_composite (op, src_img, mask_img, dst_img, 345 src_x, src_y, mask_x, mask_y, dst_x, dst_y, w, h); 346 347 if (dst_fmt == PIXMAN_x8r8g8b8 || dst_fmt == PIXMAN_x8b8g8r8) 348 { 349 /* ignore unused part */ 350 for (i = 0; i < dst_stride * dst_height / 4; i++) 351 dstbuf[i] &= 0xFFFFFF; 352 } 353 354 image_endian_swap (dst_img); 355 356 if (verbose) 357 { 358 int j; 359 360 for (i = 0; i < dst_height; i++) 361 { 362 for (j = 0; j < dst_stride; j++) 363 printf ("%02X ", *((uint8_t *)dstbuf + i * dst_stride + j)); 364 365 printf ("\n"); 366 } 367 } 368 369 pixman_image_unref (src_img); 370 pixman_image_unref (mask_img); 371 pixman_image_unref (dst_img); 372 373 crc32 = compute_crc32 (0, dstbuf, dst_stride * dst_height); 374 free (srcbuf); 375 free (maskbuf); 376 free (dstbuf); 377 378 FLOAT_REGS_CORRUPTION_DETECTOR_FINISH (); 379 return crc32; 380} 381 382#if BILINEAR_INTERPOLATION_BITS == 8 383#define CHECKSUM 0x8D3A7539 384#elif BILINEAR_INTERPOLATION_BITS == 7 385#define CHECKSUM 0x03A23E0C 386#elif BILINEAR_INTERPOLATION_BITS == 4 387#define CHECKSUM 0xE96D1A5E 388#else 389#define CHECKSUM 0x00000000 390#endif 391 392int 393main (int argc, const char *argv[]) 394{ 395 pixman_disable_out_of_bounds_workaround (); 396 397 return fuzzer_test_main("scaling", 8000000, CHECKSUM, 398 test_composite, argc, argv); 399} 400