composite.c revision 6ca29ff0 
1/*
2 * Copyright © 2005 Eric Anholt
3 * Copyright © 2009 Chris Wilson
4 * Copyright © 2010 Soeren Sandmann
5 * Copyright © 2010 Red Hat, Inc.
6 *
7 * Permission to use, copy, modify, distribute, and sell this software and its
8 * documentation for any purpose is hereby granted without fee, provided that
9 * the above copyright notice appear in all copies and that both that
10 * copyright notice and this permission notice appear in supporting
11 * documentation, and that the name of Eric Anholt not be used in
12 * advertising or publicity pertaining to distribution of the software without
13 * specific, written prior permission.  Eric Anholt makes no
14 * representations about the suitability of this software for any purpose.  It
15 * is provided "as is" without express or implied warranty.
16 *
17 * ERIC ANHOLT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
18 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
19 * EVENT SHALL ERIC ANHOLT BE LIABLE FOR ANY SPECIAL, INDIRECT OR
20 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
21 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
22 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
23 * PERFORMANCE OF THIS SOFTWARE.
24 */
25#include <stdio.h>
26#include <stdlib.h> /* abort() */
27#include <math.h>
28#include <time.h>
29#include "utils.h"
30
31typedef struct image_t image_t;
32
33static const color_t colors[] =
34{
35    { 1.0, 1.0, 1.0, 1.0 },
36    { 1.0, 1.0, 1.0, 0.0 },
37    { 0.0, 0.0, 0.0, 1.0 },
38    { 0.0, 0.0, 0.0, 0.0 },
39    { 1.0, 0.0, 0.0, 1.0 },
40    { 0.0, 1.0, 0.0, 1.0 },
41    { 0.0, 0.0, 1.0, 1.0 },
42    { 0.5, 0.0, 0.0, 0.5 },
43};
44
45static uint16_t
46_color_double_to_short (double d)
47{
48    uint32_t i;
49
50    i = (uint32_t) (d * 65536);
51    i -= (i >> 16);
52
53    return i;
54}
55
56static void
57compute_pixman_color (const color_t *color,
58		      pixman_color_t *out)
59{
60    out->red   = _color_double_to_short (color->r);
61    out->green = _color_double_to_short (color->g);
62    out->blue  = _color_double_to_short (color->b);
63    out->alpha = _color_double_to_short (color->a);
64}
65
66#define REPEAT 0x01000000
67#define FLAGS  0xff000000
68
69static const int sizes[] =
70{
71    0,
72    1,
73    1 | REPEAT,
74    10
75};
76
77static const pixman_format_code_t formats[] =
78{
79    /* 32 bpp formats */
80    PIXMAN_a8r8g8b8,
81    PIXMAN_x8r8g8b8,
82    PIXMAN_a8b8g8r8,
83    PIXMAN_x8b8g8r8,
84    PIXMAN_b8g8r8a8,
85    PIXMAN_b8g8r8x8,
86    PIXMAN_r8g8b8a8,
87    PIXMAN_r8g8b8x8,
88    PIXMAN_x2r10g10b10,
89    PIXMAN_x2b10g10r10,
90    PIXMAN_a2r10g10b10,
91    PIXMAN_a2b10g10r10,
92
93    /* sRGB formats */
94    PIXMAN_a8r8g8b8_sRGB,
95
96    /* 24 bpp formats */
97    PIXMAN_r8g8b8,
98    PIXMAN_b8g8r8,
99    PIXMAN_r5g6b5,
100    PIXMAN_b5g6r5,
101
102    /* 16 bpp formats */
103    PIXMAN_x1r5g5b5,
104    PIXMAN_x1b5g5r5,
105    PIXMAN_a1r5g5b5,
106    PIXMAN_a1b5g5r5,
107    PIXMAN_a4b4g4r4,
108    PIXMAN_x4b4g4r4,
109    PIXMAN_a4r4g4b4,
110    PIXMAN_x4r4g4b4,
111
112    /* 8 bpp formats */
113    PIXMAN_a8,
114    PIXMAN_r3g3b2,
115    PIXMAN_b2g3r3,
116    PIXMAN_a2r2g2b2,
117    PIXMAN_a2b2g2r2,
118    PIXMAN_x4a4,
119
120    /* 4 bpp formats */
121    PIXMAN_a4,
122    PIXMAN_r1g2b1,
123    PIXMAN_b1g2r1,
124    PIXMAN_a1r1g1b1,
125    PIXMAN_a1b1g1r1,
126
127    /* 1 bpp formats */
128    PIXMAN_a1,
129};
130
131struct image_t
132{
133    pixman_image_t *image;
134    pixman_format_code_t format;
135    const color_t *color;
136    pixman_repeat_t repeat;
137    int size;
138};
139
140static const pixman_op_t operators[] =
141{
142    PIXMAN_OP_CLEAR,
143    PIXMAN_OP_SRC,
144    PIXMAN_OP_DST,
145    PIXMAN_OP_OVER,
146    PIXMAN_OP_OVER_REVERSE,
147    PIXMAN_OP_IN,
148    PIXMAN_OP_IN_REVERSE,
149    PIXMAN_OP_OUT,
150    PIXMAN_OP_OUT_REVERSE,
151    PIXMAN_OP_ATOP,
152    PIXMAN_OP_ATOP_REVERSE,
153    PIXMAN_OP_XOR,
154    PIXMAN_OP_ADD,
155    PIXMAN_OP_SATURATE,
156
157    PIXMAN_OP_DISJOINT_CLEAR,
158    PIXMAN_OP_DISJOINT_SRC,
159    PIXMAN_OP_DISJOINT_DST,
160    PIXMAN_OP_DISJOINT_OVER,
161    PIXMAN_OP_DISJOINT_OVER_REVERSE,
162    PIXMAN_OP_DISJOINT_IN,
163    PIXMAN_OP_DISJOINT_IN_REVERSE,
164    PIXMAN_OP_DISJOINT_OUT,
165    PIXMAN_OP_DISJOINT_OUT_REVERSE,
166    PIXMAN_OP_DISJOINT_ATOP,
167    PIXMAN_OP_DISJOINT_ATOP_REVERSE,
168    PIXMAN_OP_DISJOINT_XOR,
169
170    PIXMAN_OP_CONJOINT_CLEAR,
171    PIXMAN_OP_CONJOINT_SRC,
172    PIXMAN_OP_CONJOINT_DST,
173    PIXMAN_OP_CONJOINT_OVER,
174    PIXMAN_OP_CONJOINT_OVER_REVERSE,
175    PIXMAN_OP_CONJOINT_IN,
176    PIXMAN_OP_CONJOINT_IN_REVERSE,
177    PIXMAN_OP_CONJOINT_OUT,
178    PIXMAN_OP_CONJOINT_OUT_REVERSE,
179    PIXMAN_OP_CONJOINT_ATOP,
180    PIXMAN_OP_CONJOINT_ATOP_REVERSE,
181    PIXMAN_OP_CONJOINT_XOR,
182};
183
184static uint32_t
185get_value (pixman_image_t *image)
186{
187    uint32_t value = *(uint32_t *)pixman_image_get_data (image);
188
189#ifdef WORDS_BIGENDIAN
190    {
191	pixman_format_code_t format = pixman_image_get_format (image);
192	value >>= 8 * sizeof(value) - PIXMAN_FORMAT_BPP (format);
193    }
194#endif
195
196    return value;
197}
198
199static char *
200describe_image (image_t *info, char *buf)
201{
202    if (info->size)
203    {
204	sprintf (buf, "%s, %dx%d%s",
205		 format_name (info->format),
206		 info->size, info->size,
207		 info->repeat ? " R" :"");
208    }
209    else
210    {
211	sprintf (buf, "solid");
212    }
213
214    return buf;
215}
216
217static char *
218describe_color (const color_t *color, char *buf)
219{
220    sprintf (buf, "%.3f %.3f %.3f %.3f",
221	     color->r, color->g, color->b, color->a);
222
223    return buf;
224}
225
226static pixman_bool_t
227composite_test (image_t *dst,
228		pixman_op_t op,
229		image_t *src,
230		image_t *mask,
231		pixman_bool_t component_alpha,
232		int testno)
233{
234    color_t expected, tdst, tsrc, tmsk;
235    pixel_checker_t checker;
236
237    if (mask)
238    {
239	pixman_image_set_component_alpha (mask->image, component_alpha);
240
241	pixman_image_composite (op, src->image, mask->image, dst->image,
242				0, 0, 0, 0, 0, 0, dst->size, dst->size);
243    }
244    else
245    {
246	pixman_image_composite (op, src->image, NULL, dst->image,
247				0, 0,
248				0, 0,
249				0, 0,
250				dst->size, dst->size);
251    }
252
253    tdst = *dst->color;
254    tsrc = *src->color;
255
256    if (mask)
257    {
258	tmsk = *mask->color;
259    }
260
261    /* It turns out that by construction all source, mask etc. colors are
262     * linear because they are made from fills, and fills are always in linear
263     * color space.  However, if they have been converted to bitmaps, we need
264     * to simulate the sRGB approximation to pass the test cases.
265     */
266    if (src->size)
267    {
268	if (PIXMAN_FORMAT_TYPE (src->format) == PIXMAN_TYPE_ARGB_SRGB)
269        {
270	    tsrc.r = convert_linear_to_srgb (tsrc.r);
271	    tsrc.g = convert_linear_to_srgb (tsrc.g);
272	    tsrc.b = convert_linear_to_srgb (tsrc.b);
273	    round_color (src->format, &tsrc);
274	    tsrc.r = convert_srgb_to_linear (tsrc.r);
275	    tsrc.g = convert_srgb_to_linear (tsrc.g);
276	    tsrc.b = convert_srgb_to_linear (tsrc.b);
277	}
278        else
279        {
280	    round_color (src->format, &tsrc);
281	}
282    }
283
284    if (mask && mask->size)
285    {
286	if (PIXMAN_FORMAT_TYPE (mask->format) == PIXMAN_TYPE_ARGB_SRGB)
287	{
288	    tmsk.r = convert_linear_to_srgb (tmsk.r);
289	    tmsk.g = convert_linear_to_srgb (tmsk.g);
290	    tmsk.b = convert_linear_to_srgb (tmsk.b);
291	    round_color (mask->format, &tmsk);
292	    tmsk.r = convert_srgb_to_linear (tmsk.r);
293	    tmsk.g = convert_srgb_to_linear (tmsk.g);
294	    tmsk.b = convert_srgb_to_linear (tmsk.b);
295	}
296	else
297	{
298	    round_color (mask->format, &tmsk);
299	}
300    }
301
302    if (PIXMAN_FORMAT_TYPE (dst->format) == PIXMAN_TYPE_ARGB_SRGB)
303    {
304	tdst.r = convert_linear_to_srgb (tdst.r);
305	tdst.g = convert_linear_to_srgb (tdst.g);
306	tdst.b = convert_linear_to_srgb (tdst.b);
307    	round_color (dst->format, &tdst);
308	tdst.r = convert_srgb_to_linear (tdst.r);
309	tdst.g = convert_srgb_to_linear (tdst.g);
310	tdst.b = convert_srgb_to_linear (tdst.b);
311    }
312    else
313    {
314    	round_color (dst->format, &tdst);
315    }
316
317    do_composite (op,
318		  &tsrc,
319		  mask? &tmsk : NULL,
320		  &tdst,
321		  &expected,
322		  component_alpha);
323
324    pixel_checker_init (&checker, dst->format);
325
326    if (!pixel_checker_check (&checker, get_value (dst->image), &expected))
327    {
328	char buf[40], buf2[40];
329	int a, r, g, b;
330	uint32_t pixel;
331
332	printf ("---- Test %d failed ----\n", testno);
333	printf ("Operator:      %s %s\n",
334                operator_name (op), component_alpha ? "CA" : "");
335
336	printf ("Source:        %s\n", describe_image (src, buf));
337	if (mask != NULL)
338	    printf ("Mask:          %s\n", describe_image (mask, buf));
339
340	printf ("Destination:   %s\n\n", describe_image (dst, buf));
341	printf ("               R     G     B     A         Rounded\n");
342	printf ("Source color:  %s     %s\n",
343		describe_color (src->color, buf),
344		describe_color (&tsrc, buf2));
345	if (mask)
346	{
347	    printf ("Mask color:    %s     %s\n",
348		    describe_color (mask->color, buf),
349		    describe_color (&tmsk, buf2));
350	}
351	printf ("Dest. color:   %s     %s\n",
352		describe_color (dst->color, buf),
353		describe_color (&tdst, buf2));
354
355	pixel = get_value (dst->image);
356
357	printf ("Expected:      %s\n", describe_color (&expected, buf));
358
359	pixel_checker_split_pixel (&checker, pixel, &a, &r, &g, &b);
360
361	printf ("Got:           %5d %5d %5d %5d  [pixel: 0x%08x]\n", r, g, b, a, pixel);
362	pixel_checker_get_min (&checker, &expected, &a, &r, &g, &b);
363	printf ("Min accepted:  %5d %5d %5d %5d\n", r, g, b, a);
364	pixel_checker_get_max (&checker, &expected, &a, &r, &g, &b);
365	printf ("Max accepted:  %5d %5d %5d %5d\n", r, g, b, a);
366
367	return FALSE;
368    }
369    return TRUE;
370}
371
372static void
373image_init (image_t *info,
374	    int color,
375	    int format,
376	    int size)
377{
378    pixman_color_t fill;
379
380    info->color = &colors[color];
381    compute_pixman_color (info->color, &fill);
382
383    info->format = formats[format];
384    info->size = sizes[size] & ~FLAGS;
385    info->repeat = PIXMAN_REPEAT_NONE;
386
387    if (info->size)
388    {
389	pixman_image_t *solid;
390
391	info->image = pixman_image_create_bits (info->format,
392						info->size, info->size,
393						NULL, 0);
394
395	solid = pixman_image_create_solid_fill (&fill);
396	pixman_image_composite32 (PIXMAN_OP_SRC, solid, NULL, info->image,
397				  0, 0, 0, 0, 0, 0, info->size, info->size);
398	pixman_image_unref (solid);
399
400	if (sizes[size] & REPEAT)
401	{
402	    pixman_image_set_repeat (info->image, PIXMAN_REPEAT_NORMAL);
403	    info->repeat = PIXMAN_REPEAT_NORMAL;
404	}
405    }
406    else
407    {
408	info->image = pixman_image_create_solid_fill (&fill);
409    }
410}
411
412static void
413image_fini (image_t *info)
414{
415    pixman_image_unref (info->image);
416}
417
418static int
419random_size (void)
420{
421    return prng_rand_n (ARRAY_LENGTH (sizes));
422}
423
424static int
425random_color (void)
426{
427    return prng_rand_n (ARRAY_LENGTH (colors));
428}
429
430static int
431random_format (void)
432{
433    return prng_rand_n (ARRAY_LENGTH (formats));
434}
435
436static pixman_bool_t
437run_test (uint32_t seed)
438{
439    image_t src, mask, dst;
440    pixman_op_t op;
441    int ca;
442    int ok;
443
444    prng_srand (seed);
445
446    image_init (&dst, random_color(), random_format(), 1);
447    image_init (&src, random_color(), random_format(), random_size());
448    image_init (&mask, random_color(), random_format(), random_size());
449
450    op = operators [prng_rand_n (ARRAY_LENGTH (operators))];
451
452    ca = prng_rand_n (3);
453
454    switch (ca)
455    {
456    case 0:
457	ok = composite_test (&dst, op, &src, NULL, FALSE, seed);
458	break;
459    case 1:
460	ok = composite_test (&dst, op, &src, &mask, FALSE, seed);
461	break;
462    case 2:
463	ok = composite_test (&dst, op, &src, &mask,
464			     mask.size? TRUE : FALSE, seed);
465	break;
466    default:
467	ok = FALSE;
468	break;
469    }
470
471    image_fini (&src);
472    image_fini (&mask);
473    image_fini (&dst);
474
475    return ok;
476}
477
478int
479main (int argc, char **argv)
480{
481#define N_TESTS (8 * 1024 * 1024)
482    int result = 0;
483    uint32_t seed;
484    int32_t i;
485
486    if (argc > 1)
487    {
488	char *end;
489
490	i = strtol (argv[1], &end, 0);
491
492	if (end != argv[1])
493	{
494	    if (!run_test (i))
495		return 1;
496	    else
497		return 0;
498	}
499	else
500	{
501	    printf ("Usage:\n\n   %s <number>\n\n", argv[0]);
502	    return -1;
503	}
504    }
505
506    if (getenv ("PIXMAN_RANDOMIZE_TESTS"))
507	seed = get_random_seed();
508    else
509	seed = 1;
510
511#ifdef USE_OPENMP
512#   pragma omp parallel for default(none) shared(result, argv, seed)
513#endif
514    for (i = 0; i <= N_TESTS; ++i)
515    {
516	if (!result && !run_test (i + seed))
517	{
518	    printf ("Test 0x%08X failed.\n", seed + i);
519
520	    result = seed + i;
521	}
522    }
523
524    return result;
525}
526