composite.c revision 14b11b2b 
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    PIXMAN_r8g8b8_sRGB,
96
97    /* 24 bpp formats */
98    PIXMAN_r8g8b8,
99    PIXMAN_b8g8r8,
100    PIXMAN_r5g6b5,
101    PIXMAN_b5g6r5,
102
103    /* 16 bpp formats */
104    PIXMAN_x1r5g5b5,
105    PIXMAN_x1b5g5r5,
106    PIXMAN_a1r5g5b5,
107    PIXMAN_a1b5g5r5,
108    PIXMAN_a4b4g4r4,
109    PIXMAN_x4b4g4r4,
110    PIXMAN_a4r4g4b4,
111    PIXMAN_x4r4g4b4,
112
113    /* 8 bpp formats */
114    PIXMAN_a8,
115    PIXMAN_r3g3b2,
116    PIXMAN_b2g3r3,
117    PIXMAN_a2r2g2b2,
118    PIXMAN_a2b2g2r2,
119    PIXMAN_x4a4,
120
121    /* 4 bpp formats */
122    PIXMAN_a4,
123    PIXMAN_r1g2b1,
124    PIXMAN_b1g2r1,
125    PIXMAN_a1r1g1b1,
126    PIXMAN_a1b1g1r1,
127
128    /* 1 bpp formats */
129    PIXMAN_a1,
130};
131
132struct image_t
133{
134    pixman_image_t *image;
135    pixman_format_code_t format;
136    const color_t *color;
137    pixman_repeat_t repeat;
138    int size;
139};
140
141static const pixman_op_t operators[] =
142{
143    PIXMAN_OP_CLEAR,
144    PIXMAN_OP_SRC,
145    PIXMAN_OP_DST,
146    PIXMAN_OP_OVER,
147    PIXMAN_OP_OVER_REVERSE,
148    PIXMAN_OP_IN,
149    PIXMAN_OP_IN_REVERSE,
150    PIXMAN_OP_OUT,
151    PIXMAN_OP_OUT_REVERSE,
152    PIXMAN_OP_ATOP,
153    PIXMAN_OP_ATOP_REVERSE,
154    PIXMAN_OP_XOR,
155    PIXMAN_OP_ADD,
156    PIXMAN_OP_SATURATE,
157
158    PIXMAN_OP_DISJOINT_CLEAR,
159    PIXMAN_OP_DISJOINT_SRC,
160    PIXMAN_OP_DISJOINT_DST,
161    PIXMAN_OP_DISJOINT_OVER,
162    PIXMAN_OP_DISJOINT_OVER_REVERSE,
163    PIXMAN_OP_DISJOINT_IN,
164    PIXMAN_OP_DISJOINT_IN_REVERSE,
165    PIXMAN_OP_DISJOINT_OUT,
166    PIXMAN_OP_DISJOINT_OUT_REVERSE,
167    PIXMAN_OP_DISJOINT_ATOP,
168    PIXMAN_OP_DISJOINT_ATOP_REVERSE,
169    PIXMAN_OP_DISJOINT_XOR,
170
171    PIXMAN_OP_CONJOINT_CLEAR,
172    PIXMAN_OP_CONJOINT_SRC,
173    PIXMAN_OP_CONJOINT_DST,
174    PIXMAN_OP_CONJOINT_OVER,
175    PIXMAN_OP_CONJOINT_OVER_REVERSE,
176    PIXMAN_OP_CONJOINT_IN,
177    PIXMAN_OP_CONJOINT_IN_REVERSE,
178    PIXMAN_OP_CONJOINT_OUT,
179    PIXMAN_OP_CONJOINT_OUT_REVERSE,
180    PIXMAN_OP_CONJOINT_ATOP,
181    PIXMAN_OP_CONJOINT_ATOP_REVERSE,
182    PIXMAN_OP_CONJOINT_XOR,
183};
184
185static uint32_t
186get_value (pixman_image_t *image)
187{
188    uint32_t value = *(uint32_t *)pixman_image_get_data (image);
189
190#ifdef WORDS_BIGENDIAN
191    {
192	pixman_format_code_t format = pixman_image_get_format (image);
193	value >>= 8 * sizeof(value) - PIXMAN_FORMAT_BPP (format);
194    }
195#endif
196
197    return value;
198}
199
200static char *
201describe_image (image_t *info, char *buf)
202{
203    if (info->size)
204    {
205	sprintf (buf, "%s, %dx%d%s",
206		 format_name (info->format),
207		 info->size, info->size,
208		 info->repeat ? " R" :"");
209    }
210    else
211    {
212	sprintf (buf, "solid");
213    }
214
215    return buf;
216}
217
218static char *
219describe_color (const color_t *color, char *buf)
220{
221    sprintf (buf, "%.3f %.3f %.3f %.3f",
222	     color->r, color->g, color->b, color->a);
223
224    return buf;
225}
226
227static pixman_bool_t
228composite_test (image_t *dst,
229		pixman_op_t op,
230		image_t *src,
231		image_t *mask,
232		pixman_bool_t component_alpha,
233		int testno)
234{
235    color_t expected, tdst, tsrc, tmsk;
236    pixel_checker_t checker;
237
238    if (mask)
239    {
240	pixman_image_set_component_alpha (mask->image, component_alpha);
241
242	pixman_image_composite (op, src->image, mask->image, dst->image,
243				0, 0, 0, 0, 0, 0, dst->size, dst->size);
244    }
245    else
246    {
247	pixman_image_composite (op, src->image, NULL, dst->image,
248				0, 0,
249				0, 0,
250				0, 0,
251				dst->size, dst->size);
252    }
253
254    tdst = *dst->color;
255    tsrc = *src->color;
256
257    if (mask)
258    {
259	tmsk = *mask->color;
260    }
261
262    /* It turns out that by construction all source, mask etc. colors are
263     * linear because they are made from fills, and fills are always in linear
264     * color space.  However, if they have been converted to bitmaps, we need
265     * to simulate the sRGB approximation to pass the test cases.
266     */
267    if (src->size)
268    {
269	if (PIXMAN_FORMAT_TYPE (src->format) == PIXMAN_TYPE_ARGB_SRGB)
270        {
271	    tsrc.r = convert_linear_to_srgb (tsrc.r);
272	    tsrc.g = convert_linear_to_srgb (tsrc.g);
273	    tsrc.b = convert_linear_to_srgb (tsrc.b);
274	    round_color (src->format, &tsrc);
275	    tsrc.r = convert_srgb_to_linear (tsrc.r);
276	    tsrc.g = convert_srgb_to_linear (tsrc.g);
277	    tsrc.b = convert_srgb_to_linear (tsrc.b);
278	}
279        else
280        {
281	    round_color (src->format, &tsrc);
282	}
283    }
284
285    if (mask && mask->size)
286    {
287	if (PIXMAN_FORMAT_TYPE (mask->format) == PIXMAN_TYPE_ARGB_SRGB)
288	{
289	    tmsk.r = convert_linear_to_srgb (tmsk.r);
290	    tmsk.g = convert_linear_to_srgb (tmsk.g);
291	    tmsk.b = convert_linear_to_srgb (tmsk.b);
292	    round_color (mask->format, &tmsk);
293	    tmsk.r = convert_srgb_to_linear (tmsk.r);
294	    tmsk.g = convert_srgb_to_linear (tmsk.g);
295	    tmsk.b = convert_srgb_to_linear (tmsk.b);
296	}
297	else
298	{
299	    round_color (mask->format, &tmsk);
300	}
301    }
302
303    if (PIXMAN_FORMAT_TYPE (dst->format) == PIXMAN_TYPE_ARGB_SRGB)
304    {
305	tdst.r = convert_linear_to_srgb (tdst.r);
306	tdst.g = convert_linear_to_srgb (tdst.g);
307	tdst.b = convert_linear_to_srgb (tdst.b);
308    	round_color (dst->format, &tdst);
309	tdst.r = convert_srgb_to_linear (tdst.r);
310	tdst.g = convert_srgb_to_linear (tdst.g);
311	tdst.b = convert_srgb_to_linear (tdst.b);
312    }
313    else
314    {
315    	round_color (dst->format, &tdst);
316    }
317
318    do_composite (op,
319		  &tsrc,
320		  mask? &tmsk : NULL,
321		  &tdst,
322		  &expected,
323		  component_alpha);
324
325    pixel_checker_init (&checker, dst->format);
326
327    if (!pixel_checker_check (&checker, get_value (dst->image), &expected))
328    {
329	char buf[40], buf2[40];
330	int a, r, g, b;
331	uint32_t pixel;
332
333	printf ("---- Test %d failed ----\n", testno);
334	printf ("Operator:      %s %s\n",
335                operator_name (op), component_alpha ? "CA" : "");
336
337	printf ("Source:        %s\n", describe_image (src, buf));
338	if (mask != NULL)
339	    printf ("Mask:          %s\n", describe_image (mask, buf));
340
341	printf ("Destination:   %s\n\n", describe_image (dst, buf));
342	printf ("               R     G     B     A         Rounded\n");
343	printf ("Source color:  %s     %s\n",
344		describe_color (src->color, buf),
345		describe_color (&tsrc, buf2));
346	if (mask)
347	{
348	    printf ("Mask color:    %s     %s\n",
349		    describe_color (mask->color, buf),
350		    describe_color (&tmsk, buf2));
351	}
352	printf ("Dest. color:   %s     %s\n",
353		describe_color (dst->color, buf),
354		describe_color (&tdst, buf2));
355
356	pixel = get_value (dst->image);
357
358	printf ("Expected:      %s\n", describe_color (&expected, buf));
359
360	pixel_checker_split_pixel (&checker, pixel, &a, &r, &g, &b);
361
362	printf ("Got:           %5d %5d %5d %5d  [pixel: 0x%08x]\n", r, g, b, a, pixel);
363	pixel_checker_get_min (&checker, &expected, &a, &r, &g, &b);
364	printf ("Min accepted:  %5d %5d %5d %5d\n", r, g, b, a);
365	pixel_checker_get_max (&checker, &expected, &a, &r, &g, &b);
366	printf ("Max accepted:  %5d %5d %5d %5d\n", r, g, b, a);
367
368	return FALSE;
369    }
370    return TRUE;
371}
372
373static void
374image_init (image_t *info,
375	    int color,
376	    int format,
377	    int size)
378{
379    pixman_color_t fill;
380
381    info->color = &colors[color];
382    compute_pixman_color (info->color, &fill);
383
384    info->format = formats[format];
385    info->size = sizes[size] & ~FLAGS;
386    info->repeat = PIXMAN_REPEAT_NONE;
387
388    if (info->size)
389    {
390	pixman_image_t *solid;
391
392	info->image = pixman_image_create_bits (info->format,
393						info->size, info->size,
394						NULL, 0);
395
396	solid = pixman_image_create_solid_fill (&fill);
397	pixman_image_composite32 (PIXMAN_OP_SRC, solid, NULL, info->image,
398				  0, 0, 0, 0, 0, 0, info->size, info->size);
399	pixman_image_unref (solid);
400
401	if (sizes[size] & REPEAT)
402	{
403	    pixman_image_set_repeat (info->image, PIXMAN_REPEAT_NORMAL);
404	    info->repeat = PIXMAN_REPEAT_NORMAL;
405	}
406    }
407    else
408    {
409	info->image = pixman_image_create_solid_fill (&fill);
410    }
411}
412
413static void
414image_fini (image_t *info)
415{
416    pixman_image_unref (info->image);
417}
418
419static int
420random_size (void)
421{
422    return prng_rand_n (ARRAY_LENGTH (sizes));
423}
424
425static int
426random_color (void)
427{
428    return prng_rand_n (ARRAY_LENGTH (colors));
429}
430
431static int
432random_format (void)
433{
434    return prng_rand_n (ARRAY_LENGTH (formats));
435}
436
437static pixman_bool_t
438run_test (uint32_t seed)
439{
440    image_t src, mask, dst;
441    pixman_op_t op;
442    int ca;
443    int ok;
444
445    prng_srand (seed);
446
447    image_init (&dst, random_color(), random_format(), 1);
448    image_init (&src, random_color(), random_format(), random_size());
449    image_init (&mask, random_color(), random_format(), random_size());
450
451    op = operators [prng_rand_n (ARRAY_LENGTH (operators))];
452
453    ca = prng_rand_n (3);
454
455    switch (ca)
456    {
457    case 0:
458	ok = composite_test (&dst, op, &src, NULL, FALSE, seed);
459	break;
460    case 1:
461	ok = composite_test (&dst, op, &src, &mask, FALSE, seed);
462	break;
463    case 2:
464	ok = composite_test (&dst, op, &src, &mask,
465			     mask.size? TRUE : FALSE, seed);
466	break;
467    default:
468	ok = FALSE;
469	break;
470    }
471
472    image_fini (&src);
473    image_fini (&mask);
474    image_fini (&dst);
475
476    return ok;
477}
478
479int
480main (int argc, char **argv)
481{
482#define N_TESTS (8 * 1024 * 1024)
483    int result = 0;
484    uint32_t seed;
485    int32_t i;
486
487    if (argc > 1)
488    {
489	char *end;
490
491	i = strtol (argv[1], &end, 0);
492
493	if (end != argv[1])
494	{
495	    if (!run_test (i))
496		return 1;
497	    else
498		return 0;
499	}
500	else
501	{
502	    printf ("Usage:\n\n   %s <number>\n\n", argv[0]);
503	    return -1;
504	}
505    }
506
507    if (getenv ("PIXMAN_RANDOMIZE_TESTS"))
508	seed = get_random_seed();
509    else
510	seed = 1;
511
512#ifdef USE_OPENMP
513#   pragma omp parallel for default(none) shared(result, argv, seed)
514#endif
515    for (i = 0; i <= N_TESTS; ++i)
516    {
517	if (!result && !run_test (i + seed))
518	{
519	    printf ("Test 0x%08X failed.\n", seed + i);
520
521	    result = seed + i;
522	}
523    }
524
525    return result;
526}
527