8 * We have a source image filled with solid color, set NORMAL or PAD repeat,
9 * and some transform which results in nearest neighbour scaling.
11 * The expected result is either that the destination image filled with this solid
12 * color or, if the transformation is such that we can't composite anything at
13 * all, that nothing has changed in the destination.
15 * The surrounding memory of the source image is a different solid color so that
16 * we are sure to get failures if we access it.
19 run_test (int32_t dst_width,
27 pixman_filter_t filter,
28 pixman_repeat_t repeat)
30 pixman_image_t * src_img;
31 pixman_image_t * dst_img;
32 pixman_transform_t transform;
35 pixman_box32_t box = { 0, 0, src_width, src_height };
36 pixman_color_t color_cc = { 0xcccc, 0xcccc, 0xcccc, 0xcccc };
40 static const pixman_fixed_t kernel[] =
42 #define D(f) (pixman_double_to_fixed (f) + 0x0001)
44 pixman_int_to_fixed (5),
45 pixman_int_to_fixed (5),
46 D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0),
47 D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0),
48 D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0),
49 D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0),
50 D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0)
55 srcbuf = (uint32_t *)malloc ((src_width + 10) * (src_height + 10) * 4);
56 dstbuf = (uint32_t *)malloc (dst_width * dst_height * 4);
58 memset (srcbuf, 0x88, src_width * src_height * 4);
59 memset (dstbuf, 0x33, dst_width * dst_height * 4);
61 src_img = pixman_image_create_bits (
62 PIXMAN_a8r8g8b8, src_width, src_height,
63 srcbuf + (src_width + 10) * 5 + 5, (src_width + 10) * 4);
65 pixman_image_fill_boxes (PIXMAN_OP_SRC, src_img, &color_cc, 1, &box);
67 dst_img = pixman_image_create_bits (
68 PIXMAN_a8r8g8b8, dst_width, dst_height, dstbuf, dst_width * 4);
70 pixman_transform_init_scale (&transform, scale_x, scale_y);
71 pixman_image_set_transform (src_img, &transform);
72 pixman_image_set_repeat (src_img, repeat);
73 if (filter == PIXMAN_FILTER_CONVOLUTION)
74 pixman_image_set_filter (src_img, filter, kernel, 27);
76 pixman_image_set_filter (src_img, filter, NULL, 0);
78 pixman_image_composite (PIXMAN_OP_SRC, src_img, NULL, dst_img,
79 src_x, src_y, 0, 0, 0, 0, dst_width, dst_height);
81 pixman_image_unref (src_img);
82 pixman_image_unref (dst_img);
84 for (i = 0; i < dst_width * dst_height; i++)
86 if (dstbuf[i] != 0xCCCCCCCC && dstbuf[i] != 0x33333333)
98 typedef struct filter_info_t filter_info_t;
101 pixman_filter_t value;
105 static const filter_info_t filters[] =
107 { PIXMAN_FILTER_NEAREST, "NEAREST" },
108 { PIXMAN_FILTER_BILINEAR, "BILINEAR" },
109 { PIXMAN_FILTER_CONVOLUTION, "CONVOLUTION" },
112 typedef struct repeat_info_t repeat_info_t;
115 pixman_repeat_t value;
120 static const repeat_info_t repeats[] =
122 { PIXMAN_REPEAT_PAD, "PAD" },
123 { PIXMAN_REPEAT_REFLECT, "REFLECT" },
124 { PIXMAN_REPEAT_NORMAL, "NORMAL" }
128 do_test (int32_t dst_size,
131 int32_t scale_factor)
133 #define N_ELEMENTS(a) (sizeof (a) / sizeof ((a)[0]))
136 for (i = 0; i < N_ELEMENTS(filters); ++i)
138 for (j = 0; j < N_ELEMENTS (repeats); ++j)
140 /* horizontal test */
141 if (run_test (dst_size, 1,
146 repeats[j].value) != 0)
148 printf ("Vertical test failed with %s filter and repeat mode %s\n",
149 filters[i].name, repeats[j].name);
155 if (run_test (1, dst_size,
160 repeats[j].value) != 0)
162 printf ("Vertical test failed with %s filter and repeat mode %s\n",
163 filters[i].name, repeats[j].name);
174 main (int argc, char *argv[])
178 pixman_disable_out_of_bounds_workaround ();
180 /* can potentially crash */
182 48000, 32767, 1, 65536 * 128) == 0);
184 /* can potentially get into a deadloop */
186 16384, 65536, 32, 32768) == 0);
188 /* can potentially access memory outside source image buffer */
194 for (i = 0; i < 100; ++i)
196 pixman_fixed_t one_seventh =
197 (((pixman_fixed_48_16_t)pixman_fixed_1) << 16) / (7 << 16);
200 1, 7, 3, one_seventh + i - 50) == 0);
203 for (i = 0; i < 100; ++i)
205 pixman_fixed_t scale =
206 (((pixman_fixed_48_16_t)pixman_fixed_1) << 16) / (32767 << 16);
209 1, 32767, 16383, scale + i - 50) == 0);
212 /* can potentially provide invalid results (out of range matrix stuff) */
214 48000, 32767, 16384, 65536 * 128) == 0);