| /* |
| * Test program, which can detect some problems with affine transformations |
| * in pixman. Testing is done by running lots of random SRC and OVER |
| * compositing operations a8r8g8b8, x8a8r8g8b8, r5g6b5 and a8 color formats |
| * with random scaled, rotated and translated transforms. |
| * |
| * Script 'fuzzer-find-diff.pl' can be used to narrow down the problem in |
| * the case of test failure. |
| */ |
| #include <assert.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include "utils.h" |
| |
| #define MAX_SRC_WIDTH 16 |
| #define MAX_SRC_HEIGHT 16 |
| #define MAX_DST_WIDTH 16 |
| #define MAX_DST_HEIGHT 16 |
| #define MAX_STRIDE 4 |
| |
| /* |
| * Composite operation with pseudorandom images |
| */ |
| uint32_t |
| test_composite (int testnum, |
| int verbose) |
| { |
| int i; |
| pixman_image_t * src_img; |
| pixman_image_t * dst_img; |
| pixman_transform_t transform; |
| pixman_region16_t clip; |
| int src_width, src_height; |
| int dst_width, dst_height; |
| int src_stride, dst_stride; |
| int src_x, src_y; |
| int dst_x, dst_y; |
| int src_bpp; |
| int dst_bpp; |
| int w, h; |
| pixman_fixed_t scale_x = 65536, scale_y = 65536; |
| pixman_fixed_t translate_x = 0, translate_y = 0; |
| pixman_op_t op; |
| pixman_repeat_t repeat = PIXMAN_REPEAT_NONE; |
| pixman_format_code_t src_fmt, dst_fmt; |
| uint32_t * srcbuf; |
| uint32_t * dstbuf; |
| uint32_t crc32; |
| FLOAT_REGS_CORRUPTION_DETECTOR_START (); |
| |
| lcg_srand (testnum); |
| |
| src_bpp = (lcg_rand_n (2) == 0) ? 2 : 4; |
| dst_bpp = (lcg_rand_n (2) == 0) ? 2 : 4; |
| op = (lcg_rand_n (2) == 0) ? PIXMAN_OP_SRC : PIXMAN_OP_OVER; |
| |
| src_width = lcg_rand_n (MAX_SRC_WIDTH) + 1; |
| src_height = lcg_rand_n (MAX_SRC_HEIGHT) + 1; |
| dst_width = lcg_rand_n (MAX_DST_WIDTH) + 1; |
| dst_height = lcg_rand_n (MAX_DST_HEIGHT) + 1; |
| src_stride = src_width * src_bpp + lcg_rand_n (MAX_STRIDE) * src_bpp; |
| dst_stride = dst_width * dst_bpp + lcg_rand_n (MAX_STRIDE) * dst_bpp; |
| |
| if (src_stride & 3) |
| src_stride += 2; |
| |
| if (dst_stride & 3) |
| dst_stride += 2; |
| |
| src_x = -(src_width / 4) + lcg_rand_n (src_width * 3 / 2); |
| src_y = -(src_height / 4) + lcg_rand_n (src_height * 3 / 2); |
| dst_x = -(dst_width / 4) + lcg_rand_n (dst_width * 3 / 2); |
| dst_y = -(dst_height / 4) + lcg_rand_n (dst_height * 3 / 2); |
| w = lcg_rand_n (dst_width * 3 / 2 - dst_x); |
| h = lcg_rand_n (dst_height * 3 / 2 - dst_y); |
| |
| srcbuf = (uint32_t *)malloc (src_stride * src_height); |
| dstbuf = (uint32_t *)malloc (dst_stride * dst_height); |
| |
| for (i = 0; i < src_stride * src_height; i++) |
| *((uint8_t *)srcbuf + i) = lcg_rand_n (256); |
| |
| for (i = 0; i < dst_stride * dst_height; i++) |
| *((uint8_t *)dstbuf + i) = lcg_rand_n (256); |
| |
| src_fmt = src_bpp == 4 ? (lcg_rand_n (2) == 0 ? |
| PIXMAN_a8r8g8b8 : PIXMAN_x8r8g8b8) : PIXMAN_r5g6b5; |
| |
| dst_fmt = dst_bpp == 4 ? (lcg_rand_n (2) == 0 ? |
| PIXMAN_a8r8g8b8 : PIXMAN_x8r8g8b8) : PIXMAN_r5g6b5; |
| |
| src_img = pixman_image_create_bits ( |
| src_fmt, src_width, src_height, srcbuf, src_stride); |
| |
| dst_img = pixman_image_create_bits ( |
| dst_fmt, dst_width, dst_height, dstbuf, dst_stride); |
| |
| image_endian_swap (src_img); |
| image_endian_swap (dst_img); |
| |
| pixman_transform_init_identity (&transform); |
| |
| if (lcg_rand_n (8) > 0) |
| { |
| scale_x = -32768 * 3 + lcg_rand_N (65536 * 5); |
| scale_y = -32768 * 3 + lcg_rand_N (65536 * 5); |
| translate_x = lcg_rand_N (65536); |
| translate_y = lcg_rand_N (65536); |
| pixman_transform_init_scale (&transform, scale_x, scale_y); |
| pixman_transform_translate (&transform, NULL, translate_x, translate_y); |
| } |
| |
| if (lcg_rand_n (4) > 0) |
| { |
| int c, s, tx = 0, ty = 0; |
| switch (lcg_rand_n (4)) |
| { |
| case 0: |
| /* 90 degrees */ |
| c = 0; |
| s = pixman_fixed_1; |
| tx = pixman_int_to_fixed (MAX_SRC_HEIGHT); |
| break; |
| case 1: |
| /* 180 degrees */ |
| c = -pixman_fixed_1; |
| s = 0; |
| tx = pixman_int_to_fixed (MAX_SRC_WIDTH); |
| ty = pixman_int_to_fixed (MAX_SRC_HEIGHT); |
| break; |
| case 2: |
| /* 270 degrees */ |
| c = 0; |
| s = -pixman_fixed_1; |
| ty = pixman_int_to_fixed (MAX_SRC_WIDTH); |
| break; |
| default: |
| /* arbitrary rotation */ |
| c = lcg_rand_N (2 * 65536) - 65536; |
| s = lcg_rand_N (2 * 65536) - 65536; |
| break; |
| } |
| pixman_transform_rotate (&transform, NULL, c, s); |
| pixman_transform_translate (&transform, NULL, tx, ty); |
| } |
| |
| pixman_image_set_transform (src_img, &transform); |
| |
| switch (lcg_rand_n (4)) |
| { |
| case 0: |
| repeat = PIXMAN_REPEAT_NONE; |
| break; |
| |
| case 1: |
| repeat = PIXMAN_REPEAT_NORMAL; |
| break; |
| |
| case 2: |
| repeat = PIXMAN_REPEAT_PAD; |
| break; |
| |
| case 3: |
| repeat = PIXMAN_REPEAT_REFLECT; |
| break; |
| |
| default: |
| break; |
| } |
| pixman_image_set_repeat (src_img, repeat); |
| |
| if (lcg_rand_n (2)) |
| pixman_image_set_filter (src_img, PIXMAN_FILTER_NEAREST, NULL, 0); |
| else |
| pixman_image_set_filter (src_img, PIXMAN_FILTER_BILINEAR, NULL, 0); |
| |
| if (verbose) |
| { |
| printf ("src_fmt=%08X, dst_fmt=%08X\n", src_fmt, dst_fmt); |
| printf ("op=%d, scale_x=%d, scale_y=%d, repeat=%d\n", |
| op, scale_x, scale_y, repeat); |
| printf ("translate_x=%d, translate_y=%d\n", |
| translate_x, translate_y); |
| printf ("src_width=%d, src_height=%d, dst_width=%d, dst_height=%d\n", |
| src_width, src_height, dst_width, dst_height); |
| printf ("src_x=%d, src_y=%d, dst_x=%d, dst_y=%d\n", |
| src_x, src_y, dst_x, dst_y); |
| printf ("w=%d, h=%d\n", w, h); |
| } |
| |
| if (lcg_rand_n (8) == 0) |
| { |
| pixman_box16_t clip_boxes[2]; |
| int n = lcg_rand_n (2) + 1; |
| |
| for (i = 0; i < n; i++) |
| { |
| clip_boxes[i].x1 = lcg_rand_n (src_width); |
| clip_boxes[i].y1 = lcg_rand_n (src_height); |
| clip_boxes[i].x2 = |
| clip_boxes[i].x1 + lcg_rand_n (src_width - clip_boxes[i].x1); |
| clip_boxes[i].y2 = |
| clip_boxes[i].y1 + lcg_rand_n (src_height - clip_boxes[i].y1); |
| |
| if (verbose) |
| { |
| printf ("source clip box: [%d,%d-%d,%d]\n", |
| clip_boxes[i].x1, clip_boxes[i].y1, |
| clip_boxes[i].x2, clip_boxes[i].y2); |
| } |
| } |
| |
| pixman_region_init_rects (&clip, clip_boxes, n); |
| pixman_image_set_clip_region (src_img, &clip); |
| pixman_image_set_source_clipping (src_img, 1); |
| pixman_region_fini (&clip); |
| } |
| |
| if (lcg_rand_n (8) == 0) |
| { |
| pixman_box16_t clip_boxes[2]; |
| int n = lcg_rand_n (2) + 1; |
| for (i = 0; i < n; i++) |
| { |
| clip_boxes[i].x1 = lcg_rand_n (dst_width); |
| clip_boxes[i].y1 = lcg_rand_n (dst_height); |
| clip_boxes[i].x2 = |
| clip_boxes[i].x1 + lcg_rand_n (dst_width - clip_boxes[i].x1); |
| clip_boxes[i].y2 = |
| clip_boxes[i].y1 + lcg_rand_n (dst_height - clip_boxes[i].y1); |
| |
| if (verbose) |
| { |
| printf ("destination clip box: [%d,%d-%d,%d]\n", |
| clip_boxes[i].x1, clip_boxes[i].y1, |
| clip_boxes[i].x2, clip_boxes[i].y2); |
| } |
| } |
| pixman_region_init_rects (&clip, clip_boxes, n); |
| pixman_image_set_clip_region (dst_img, &clip); |
| pixman_region_fini (&clip); |
| } |
| |
| pixman_image_composite (op, src_img, NULL, dst_img, |
| src_x, src_y, 0, 0, dst_x, dst_y, w, h); |
| |
| if (dst_fmt == PIXMAN_x8r8g8b8) |
| { |
| /* ignore unused part */ |
| for (i = 0; i < dst_stride * dst_height / 4; i++) |
| dstbuf[i] &= 0xFFFFFF; |
| } |
| |
| image_endian_swap (dst_img); |
| |
| if (verbose) |
| { |
| int j; |
| |
| for (i = 0; i < dst_height; i++) |
| { |
| for (j = 0; j < dst_stride; j++) |
| printf ("%02X ", *((uint8_t *)dstbuf + i * dst_stride + j)); |
| |
| printf ("\n"); |
| } |
| } |
| |
| pixman_image_unref (src_img); |
| pixman_image_unref (dst_img); |
| |
| crc32 = compute_crc32 (0, dstbuf, dst_stride * dst_height); |
| free (srcbuf); |
| free (dstbuf); |
| |
| FLOAT_REGS_CORRUPTION_DETECTOR_FINISH (); |
| return crc32; |
| } |
| |
| int |
| main (int argc, const char *argv[]) |
| { |
| pixman_disable_out_of_bounds_workaround (); |
| |
| return fuzzer_test_main ("affine", 8000000, 0x4B5D1852, |
| test_composite, argc, argv); |
| } |