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Diffstat (limited to 'qemu/pixman/test/affine-test.c')
| -rw-r--r-- | qemu/pixman/test/affine-test.c | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/qemu/pixman/test/affine-test.c b/qemu/pixman/test/affine-test.c new file mode 100644 index 000000000..8e19023a3 --- /dev/null +++ b/qemu/pixman/test/affine-test.c @@ -0,0 +1,324 @@ +/* + * 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 (); + + prng_srand (testnum); + + src_bpp = (prng_rand_n (2) == 0) ? 2 : 4; + dst_bpp = (prng_rand_n (2) == 0) ? 2 : 4; + op = (prng_rand_n (2) == 0) ? PIXMAN_OP_SRC : PIXMAN_OP_OVER; + + src_width = prng_rand_n (MAX_SRC_WIDTH) + 1; + src_height = prng_rand_n (MAX_SRC_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; + dst_stride = dst_width * dst_bpp + prng_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) + prng_rand_n (src_width * 3 / 2); + src_y = -(src_height / 4) + prng_rand_n (src_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); + dstbuf = (uint32_t *)malloc (dst_stride * dst_height); + + prng_randmemset (srcbuf, src_stride * src_height, 0); + prng_randmemset (dstbuf, dst_stride * dst_height, 0); + + if (prng_rand_n (2) == 0) + { + srcbuf += (src_stride / 4) * (src_height - 1); + src_stride = - src_stride; + } + + if (prng_rand_n (2) == 0) + { + dstbuf += (dst_stride / 4) * (dst_height - 1); + dst_stride = - dst_stride; + } + + src_fmt = src_bpp == 4 ? (prng_rand_n (2) == 0 ? + PIXMAN_a8r8g8b8 : PIXMAN_x8r8g8b8) : PIXMAN_r5g6b5; + + dst_fmt = dst_bpp == 4 ? (prng_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 (prng_rand_n (3) > 0) + { + scale_x = -65536 * 3 + prng_rand_n (65536 * 6); + if (prng_rand_n (2)) + scale_y = -65536 * 3 + prng_rand_n (65536 * 6); + else + scale_y = scale_x; + pixman_transform_init_scale (&transform, scale_x, scale_y); + } + if (prng_rand_n (3) > 0) + { + translate_x = -65536 * 3 + prng_rand_n (6 * 65536); + if (prng_rand_n (2)) + translate_y = -65536 * 3 + prng_rand_n (6 * 65536); + else + translate_y = translate_x; + pixman_transform_translate (&transform, NULL, translate_x, translate_y); + } + + if (prng_rand_n (4) > 0) + { + int c, s, tx = 0, ty = 0; + switch (prng_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 = prng_rand_n (2 * 65536) - 65536; + s = prng_rand_n (2 * 65536) - 65536; + break; + } + pixman_transform_rotate (&transform, NULL, c, s); + pixman_transform_translate (&transform, NULL, tx, ty); + } + + if (prng_rand_n (8) == 0) + { + /* Flip random bits */ + int maxflipcount = 8; + while (maxflipcount--) + { + int i = prng_rand_n (2); + int j = prng_rand_n (3); + int bitnum = prng_rand_n (32); + transform.matrix[i][j] ^= 1 << bitnum; + if (prng_rand_n (2)) + break; + } + } + + pixman_image_set_transform (src_img, &transform); + + 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 (verbose) + { +#define M(r,c) \ + transform.matrix[r][c] + + printf ("src_fmt=%s, dst_fmt=%s\n", format_name (src_fmt), format_name (dst_fmt)); + printf ("op=%s, repeat=%d, transform=\n", + operator_name (op), repeat); + printf (" { { { 0x%08x, 0x%08x, 0x%08x },\n" + " { 0x%08x, 0x%08x, 0x%08x },\n" + " { 0x%08x, 0x%08x, 0x%08x },\n" + " } };\n", + M(0,0), M(0,1), M(0,2), + M(1,0), M(1,1), M(1,2), + M(2,0), M(2,1), M(2,2)); + 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 (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); + } + + pixman_image_composite (op, src_img, NULL, dst_img, + src_x, src_y, 0, 0, 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 (dst_img); + + if (src_stride < 0) + srcbuf += (src_stride / 4) * (src_height - 1); + + if (dst_stride < 0) + dstbuf += (dst_stride / 4) * (dst_height - 1); + + free (srcbuf); + free (dstbuf); + + FLOAT_REGS_CORRUPTION_DETECTOR_FINISH (); + return crc32; +} + +#if BILINEAR_INTERPOLATION_BITS == 7 +#define CHECKSUM 0xBE724CFE +#elif BILINEAR_INTERPOLATION_BITS == 4 +#define CHECKSUM 0x79BBE501 +#else +#define CHECKSUM 0x00000000 +#endif + +int +main (int argc, const char *argv[]) +{ + pixman_disable_out_of_bounds_workaround (); + + return fuzzer_test_main ("affine", 8000000, CHECKSUM, + test_composite, argc, argv); +} |