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Diffstat (limited to 'src/pixman/test/scaling-test.c')
| -rw-r--r-- | src/pixman/test/scaling-test.c | 402 |
1 files changed, 402 insertions, 0 deletions
diff --git a/src/pixman/test/scaling-test.c b/src/pixman/test/scaling-test.c new file mode 100644 index 0000000..e2f7fa9 --- /dev/null +++ b/src/pixman/test/scaling-test.c @@ -0,0 +1,402 @@ +/* + * Test program, which can detect some problems with nearest neighbour + * and bilinear scaling in pixman. Testing is done by running lots + * of random SRC and OVER compositing operations a8r8g8b8, x8a8r8g8b8 + * and r5g6b5 color formats. + * + * Script 'fuzzer-find-diff.pl' can be used to narrow down the problem in + * the case of test failure. + */ +#include <stdlib.h> +#include <stdio.h> +#include "utils.h" + +#define MAX_SRC_WIDTH 48 +#define MAX_SRC_HEIGHT 8 +#define MAX_DST_WIDTH 48 +#define MAX_DST_HEIGHT 8 +#define MAX_STRIDE 4 + +/* + * Composite operation with pseudorandom images + */ + +static pixman_format_code_t +get_format (int bpp) +{ + if (bpp == 4) + { + switch (prng_rand_n (4)) + { + default: + case 0: + return PIXMAN_a8r8g8b8; + case 1: + return PIXMAN_x8r8g8b8; + case 2: + return PIXMAN_a8b8g8r8; + case 3: + return PIXMAN_x8b8g8r8; + } + } + else + { + return PIXMAN_r5g6b5; + } +} + +uint32_t +test_composite (int testnum, + int verbose) +{ + int i; + pixman_image_t * src_img; + pixman_image_t * mask_img; + pixman_image_t * dst_img; + pixman_transform_t transform; + pixman_region16_t clip; + int src_width, src_height; + int mask_width, mask_height; + int dst_width, dst_height; + int src_stride, mask_stride, dst_stride; + int src_x, src_y; + int mask_x, mask_y; + int dst_x, dst_y; + int src_bpp; + int mask_bpp = 1; + 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_fixed_t mask_scale_x = 65536, mask_scale_y = 65536; + pixman_fixed_t mask_translate_x = 0, mask_translate_y = 0; + pixman_op_t op; + pixman_repeat_t repeat = PIXMAN_REPEAT_NONE; + pixman_repeat_t mask_repeat = PIXMAN_REPEAT_NONE; + pixman_format_code_t src_fmt, dst_fmt; + uint32_t * srcbuf; + uint32_t * dstbuf; + uint32_t * maskbuf; + uint32_t crc32; + FLOAT_REGS_CORRUPTION_DETECTOR_START (); + + prng_srand (testnum); + + src_bpp = (prng_rand_n (2) == 0) ? 2 : 4; + dst_bpp = (prng_rand_n (2) == 0) ? 2 : 4; + switch (prng_rand_n (3)) + { + case 0: + op = PIXMAN_OP_SRC; + break; + case 1: + op = PIXMAN_OP_OVER; + break; + default: + op = PIXMAN_OP_ADD; + break; + } + + src_width = prng_rand_n (MAX_SRC_WIDTH) + 1; + src_height = prng_rand_n (MAX_SRC_HEIGHT) + 1; + + if (prng_rand_n (2)) + { + mask_width = prng_rand_n (MAX_SRC_WIDTH) + 1; + mask_height = prng_rand_n (MAX_SRC_HEIGHT) + 1; + } + else + { + mask_width = mask_height = 1; + } + + dst_width = prng_rand_n (MAX_DST_WIDTH) + 1; + dst_height = prng_rand_n (MAX_DST_HEIGHT) + 1; + src_stride = src_width * src_bpp + prng_rand_n (MAX_STRIDE) * src_bpp; + mask_stride = mask_width * mask_bpp + prng_rand_n (MAX_STRIDE) * mask_bpp; + dst_stride = dst_width * dst_bpp + prng_rand_n (MAX_STRIDE) * dst_bpp; + + if (src_stride & 3) + src_stride += 2; + + if (mask_stride & 1) + mask_stride += 1; + if (mask_stride & 2) + mask_stride += 2; + + if (dst_stride & 3) + dst_stride += 2; + + src_x = -(src_width / 4) + prng_rand_n (src_width * 3 / 2); + src_y = -(src_height / 4) + prng_rand_n (src_height * 3 / 2); + mask_x = -(mask_width / 4) + prng_rand_n (mask_width * 3 / 2); + mask_y = -(mask_height / 4) + prng_rand_n (mask_height * 3 / 2); + dst_x = -(dst_width / 4) + prng_rand_n (dst_width * 3 / 2); + dst_y = -(dst_height / 4) + prng_rand_n (dst_height * 3 / 2); + w = prng_rand_n (dst_width * 3 / 2 - dst_x); + h = prng_rand_n (dst_height * 3 / 2 - dst_y); + + srcbuf = (uint32_t *)malloc (src_stride * src_height); + maskbuf = (uint32_t *)malloc (mask_stride * mask_height); + dstbuf = (uint32_t *)malloc (dst_stride * dst_height); + + prng_randmemset (srcbuf, src_stride * src_height, 0); + prng_randmemset (maskbuf, mask_stride * mask_height, 0); + prng_randmemset (dstbuf, dst_stride * dst_height, 0); + + src_fmt = get_format (src_bpp); + dst_fmt = get_format (dst_bpp); + + if (prng_rand_n (2)) + { + srcbuf += (src_stride / 4) * (src_height - 1); + src_stride = - src_stride; + } + + if (prng_rand_n (2)) + { + maskbuf += (mask_stride / 4) * (mask_height - 1); + mask_stride = - mask_stride; + } + + if (prng_rand_n (2)) + { + dstbuf += (dst_stride / 4) * (dst_height - 1); + dst_stride = - dst_stride; + } + + src_img = pixman_image_create_bits ( + src_fmt, src_width, src_height, srcbuf, src_stride); + + mask_img = pixman_image_create_bits ( + PIXMAN_a8, mask_width, mask_height, maskbuf, mask_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); + + if (prng_rand_n (4) > 0) + { + scale_x = -32768 * 3 + prng_rand_n (65536 * 5); + scale_y = -32768 * 3 + prng_rand_n (65536 * 5); + translate_x = prng_rand_n (65536); + translate_y = prng_rand_n (65536); + pixman_transform_init_scale (&transform, scale_x, scale_y); + pixman_transform_translate (&transform, NULL, translate_x, translate_y); + pixman_image_set_transform (src_img, &transform); + } + + if (prng_rand_n (2) > 0) + { + mask_scale_x = -32768 * 3 + prng_rand_n (65536 * 5); + mask_scale_y = -32768 * 3 + prng_rand_n (65536 * 5); + mask_translate_x = prng_rand_n (65536); + mask_translate_y = prng_rand_n (65536); + pixman_transform_init_scale (&transform, mask_scale_x, mask_scale_y); + pixman_transform_translate (&transform, NULL, mask_translate_x, mask_translate_y); + pixman_image_set_transform (mask_img, &transform); + } + + switch (prng_rand_n (4)) + { + case 0: + mask_repeat = PIXMAN_REPEAT_NONE; + break; + + case 1: + mask_repeat = PIXMAN_REPEAT_NORMAL; + break; + + case 2: + mask_repeat = PIXMAN_REPEAT_PAD; + break; + + case 3: + mask_repeat = PIXMAN_REPEAT_REFLECT; + break; + + default: + break; + } + pixman_image_set_repeat (mask_img, mask_repeat); + + switch (prng_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 (prng_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 (prng_rand_n (2)) + pixman_image_set_filter (mask_img, PIXMAN_FILTER_NEAREST, NULL, 0); + else + pixman_image_set_filter (mask_img, PIXMAN_FILTER_BILINEAR, NULL, 0); + + if (verbose) + { + printf ("src_fmt=%s, dst_fmt=%s\n", + format_name (src_fmt), format_name (dst_fmt)); + printf ("op=%s, scale_x=%d, scale_y=%d, repeat=%d\n", + operator_name (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 (prng_rand_n (8) == 0) + { + pixman_box16_t clip_boxes[2]; + int n = prng_rand_n (2) + 1; + + for (i = 0; i < n; i++) + { + clip_boxes[i].x1 = prng_rand_n (src_width); + clip_boxes[i].y1 = prng_rand_n (src_height); + clip_boxes[i].x2 = + clip_boxes[i].x1 + prng_rand_n (src_width - clip_boxes[i].x1); + clip_boxes[i].y2 = + clip_boxes[i].y1 + prng_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 (prng_rand_n (8) == 0) + { + pixman_box16_t clip_boxes[2]; + int n = prng_rand_n (2) + 1; + + for (i = 0; i < n; i++) + { + clip_boxes[i].x1 = prng_rand_n (mask_width); + clip_boxes[i].y1 = prng_rand_n (mask_height); + clip_boxes[i].x2 = + clip_boxes[i].x1 + prng_rand_n (mask_width - clip_boxes[i].x1); + clip_boxes[i].y2 = + clip_boxes[i].y1 + prng_rand_n (mask_height - clip_boxes[i].y1); + + if (verbose) + { + printf ("mask 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 (mask_img, &clip); + pixman_image_set_source_clipping (mask_img, 1); + pixman_region_fini (&clip); + } + + if (prng_rand_n (8) == 0) + { + pixman_box16_t clip_boxes[2]; + int n = prng_rand_n (2) + 1; + for (i = 0; i < n; i++) + { + clip_boxes[i].x1 = prng_rand_n (dst_width); + clip_boxes[i].y1 = prng_rand_n (dst_height); + clip_boxes[i].x2 = + clip_boxes[i].x1 + prng_rand_n (dst_width - clip_boxes[i].x1); + clip_boxes[i].y2 = + clip_boxes[i].y1 + prng_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); + } + + if (prng_rand_n (2) == 0) + pixman_image_composite (op, src_img, NULL, dst_img, + src_x, src_y, 0, 0, dst_x, dst_y, w, h); + else + pixman_image_composite (op, src_img, mask_img, dst_img, + src_x, src_y, mask_x, mask_y, dst_x, dst_y, w, h); + + crc32 = compute_crc32_for_image (0, dst_img); + + if (verbose) + print_image (dst_img); + + pixman_image_unref (src_img); + pixman_image_unref (mask_img); + pixman_image_unref (dst_img); + + if (src_stride < 0) + srcbuf += (src_stride / 4) * (src_height - 1); + + if (mask_stride < 0) + maskbuf += (mask_stride / 4) * (mask_height - 1); + + if (dst_stride < 0) + dstbuf += (dst_stride / 4) * (dst_height - 1); + + free (srcbuf); + free (maskbuf); + free (dstbuf); + + FLOAT_REGS_CORRUPTION_DETECTOR_FINISH (); + return crc32; +} + +#if BILINEAR_INTERPOLATION_BITS == 7 +#define CHECKSUM 0x92E0F068 +#elif BILINEAR_INTERPOLATION_BITS == 4 +#define CHECKSUM 0x8EFFA1E5 +#else +#define CHECKSUM 0x00000000 +#endif + +int +main (int argc, const char *argv[]) +{ + pixman_disable_out_of_bounds_workaround (); + + return fuzzer_test_main("scaling", 8000000, CHECKSUM, + test_composite, argc, argv); +} |
