summaryrefslogtreecommitdiff
path: root/src/mesa/math/m_debug_xform.c
blob: 7d815664a149f10d21354db08d24ee86ad38c727 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
/*
 * Mesa 3-D graphics library
 * Version:  6.1
 *
 * Copyright (C) 1999-2004  Brian Paul   All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

/*
 * Updated for P6 architecture by Gareth Hughes.
 */

#include "main/glheader.h"
#include "main/context.h"
#include "main/macros.h"
#include "main/imports.h"

#include "m_matrix.h"
#include "m_xform.h"

#include "m_debug.h"
#include "m_debug_util.h"

#ifdef __UNIXOS2__
/* The linker doesn't like empty files */
static char dummy;
#endif

#ifdef DEBUG_MATH  /* This code only used for debugging */


/* Overhead of profiling counter in cycles.  Automatically adjusted to
 * your machine at run time - counter initialization should give very
 * consistent results.
 */
long counter_overhead = 0;

/* This is the value of the environment variable MESA_PROFILE, and is
 * used to determine if we should benchmark the functions as well as
 * verify their correctness.
 */
char *mesa_profile = NULL;


static int m_general[16] = {
   VAR, VAR, VAR, VAR,
   VAR, VAR, VAR, VAR,
   VAR, VAR, VAR, VAR,
   VAR, VAR, VAR, VAR
};
static int m_identity[16] = {
   ONE, NIL, NIL, NIL,
   NIL, ONE, NIL, NIL,
   NIL, NIL, ONE, NIL,
   NIL, NIL, NIL, ONE
};
static int  m_2d[16]  = {
   VAR, VAR, NIL, VAR,
   VAR, VAR, NIL, VAR,
   NIL, NIL, ONE, NIL,
   NIL, NIL, NIL, ONE
};
static int m_2d_no_rot[16] = {
   VAR, NIL, NIL, VAR,
   NIL, VAR, NIL, VAR,
   NIL, NIL, ONE, NIL,
   NIL, NIL, NIL, ONE
};
static int m_3d[16] = {
   VAR, VAR, VAR, VAR,
   VAR, VAR, VAR, VAR,
   VAR, VAR, VAR, VAR,
   NIL, NIL, NIL, ONE
};
static int m_3d_no_rot[16] = {
   VAR, NIL, NIL, VAR,
   NIL, VAR, NIL, VAR,
   NIL, NIL, VAR, VAR,
   NIL, NIL, NIL, ONE
};
static int m_perspective[16] = {
   VAR, NIL, VAR, NIL,
   NIL, VAR, VAR, NIL,
   NIL, NIL, VAR, VAR,
   NIL, NIL, NEG, NIL
};
static int *templates[7] = {
   m_general,
   m_identity,
   m_3d_no_rot,
   m_perspective,
   m_2d,
   m_2d_no_rot,
   m_3d
};
static enum GLmatrixtype mtypes[7] = {
   MATRIX_GENERAL,
   MATRIX_IDENTITY,
   MATRIX_3D_NO_ROT,
   MATRIX_PERSPECTIVE,
   MATRIX_2D,
   MATRIX_2D_NO_ROT,
   MATRIX_3D
};
static char *mstrings[7] = {
   "MATRIX_GENERAL",
   "MATRIX_IDENTITY",
   "MATRIX_3D_NO_ROT",
   "MATRIX_PERSPECTIVE",
   "MATRIX_2D",
   "MATRIX_2D_NO_ROT",
   "MATRIX_3D"
};


/* =============================================================
 * Reference transformations
 */

static void ref_transform( GLvector4f *dst,
                           const GLmatrix *mat,
                           const GLvector4f *src )
{
   GLuint i;
   GLfloat *s = (GLfloat *)src->start;
   GLfloat (*d)[4] = (GLfloat (*)[4])dst->start;
   const GLfloat *m = mat->m;

   for ( i = 0 ; i < src->count ; i++ ) {
      TRANSFORM_POINT( d[i], m, s );
      s = (GLfloat *)((char *)s + src->stride);
   }
}


/* =============================================================
 * Vertex transformation tests
 */

static void init_matrix( GLfloat *m )
{
   m[0] = 63.0; m[4] = 43.0; m[ 8] = 29.0; m[12] = 43.0;
   m[1] = 55.0; m[5] = 17.0; m[ 9] = 31.0; m[13] =  7.0;
   m[2] = 44.0; m[6] =  9.0; m[10] =  7.0; m[14] =  3.0;
   m[3] = 11.0; m[7] = 23.0; m[11] = 91.0; m[15] =  9.0;
}

ALIGN16(static GLfloat, s[TEST_COUNT][4]);
ALIGN16(static GLfloat, d[TEST_COUNT][4]);
ALIGN16(static GLfloat, r[TEST_COUNT][4]);

static int test_transform_function( transform_func func, int psize,
				    int mtype, unsigned long *cycles )
{
   GLvector4f source[1], dest[1], ref[1];
   GLmatrix mat[1];
   GLfloat *m;
   int i, j;
#ifdef  RUN_DEBUG_BENCHMARK
   int cycle_i;                /* the counter for the benchmarks we run */
#endif

   (void) cycles;

   if ( psize > 4 ) {
      _mesa_problem( NULL, "test_transform_function called with psize > 4\n" );
      return 0;
   }

   mat->m = (GLfloat *) _mesa_align_malloc( 16 * sizeof(GLfloat), 16 );
   mat->type = mtypes[mtype];

   m = mat->m;
   ASSERT( ((long)m & 15) == 0 );

   init_matrix( m );

   for ( i = 0 ; i < 4 ; i++ ) {
      for ( j = 0 ; j < 4 ; j++ ) {
         switch ( templates[mtype][i * 4 + j] ) {
         case NIL:
            m[j * 4 + i] = 0.0;
            break;
         case ONE:
            m[j * 4 + i] = 1.0;
            break;
         case NEG:
            m[j * 4 + i] = -1.0;
            break;
         case VAR:
            break;
         default:
            ASSERT(0);
            return 0;
         }
      }
   }

   for ( i = 0 ; i < TEST_COUNT ; i++) {
      ASSIGN_4V( d[i], 0.0, 0.0, 0.0, 1.0 );
      ASSIGN_4V( s[i], 0.0, 0.0, 0.0, 1.0 );
      for ( j = 0 ; j < psize ; j++ )
         s[i][j] = rnd();
   }

   source->data = (GLfloat(*)[4])s;
   source->start = (GLfloat *)s;
   source->count = TEST_COUNT;
   source->stride = sizeof(s[0]);
   source->size = 4;
   source->flags = 0;

   dest->data = (GLfloat(*)[4])d;
   dest->start = (GLfloat *)d;
   dest->count = TEST_COUNT;
   dest->stride = sizeof(float[4]);
   dest->size = 0;
   dest->flags = 0;

   ref->data = (GLfloat(*)[4])r;
   ref->start = (GLfloat *)r;
   ref->count = TEST_COUNT;
   ref->stride = sizeof(float[4]);
   ref->size = 0;
   ref->flags = 0;

   ref_transform( ref, mat, source );

   if ( mesa_profile ) {
      BEGIN_RACE( *cycles );
      func( dest, mat->m, source );
      END_RACE( *cycles );
   }
   else {
      func( dest, mat->m, source );
   }

   for ( i = 0 ; i < TEST_COUNT ; i++ ) {
      for ( j = 0 ; j < 4 ; j++ ) {
         if ( significand_match( d[i][j], r[i][j] ) < REQUIRED_PRECISION ) {
            printf("-----------------------------\n" );
            printf("(i = %i, j = %i)\n", i, j );
            printf("%f \t %f \t [diff = %e - %i bit missed]\n",
		    d[i][0], r[i][0], r[i][0]-d[i][0],
		    MAX_PRECISION - significand_match( d[i][0], r[i][0] ) );
            printf("%f \t %f \t [diff = %e - %i bit missed]\n",
		    d[i][1], r[i][1], r[i][1]-d[i][1],
		    MAX_PRECISION - significand_match( d[i][1], r[i][1] ) );
            printf("%f \t %f \t [diff = %e - %i bit missed]\n",
		    d[i][2], r[i][2], r[i][2]-d[i][2],
		    MAX_PRECISION - significand_match( d[i][2], r[i][2] ) );
            printf("%f \t %f \t [diff = %e - %i bit missed]\n",
		    d[i][3], r[i][3], r[i][3]-d[i][3],
		    MAX_PRECISION - significand_match( d[i][3], r[i][3] ) );
            return 0;
         }
      }
   }

   _mesa_align_free( mat->m );
   return 1;
}

void _math_test_all_transform_functions( char *description )
{
   int psize, mtype;
   unsigned long benchmark_tab[4][7];
   static int first_time = 1;

   if ( first_time ) {
      first_time = 0;
      mesa_profile = _mesa_getenv( "MESA_PROFILE" );
   }

#ifdef RUN_DEBUG_BENCHMARK
   if ( mesa_profile ) {
      if ( !counter_overhead ) {
	 INIT_COUNTER();
	 printf("counter overhead: %lu cycles\n\n", counter_overhead );
      }
      printf("transform results after hooking in %s functions:\n", description );
   }
#endif

#ifdef RUN_DEBUG_BENCHMARK
   if ( mesa_profile ) {
      printf("\n" );
      for ( psize = 1 ; psize <= 4 ; psize++ ) {
	 printf(" p%d\t", psize );
      }
      printf("\n--------------------------------------------------------\n" );
   }
#endif

   for ( mtype = 0 ; mtype < 7 ; mtype++ ) {
      for ( psize = 1 ; psize <= 4 ; psize++ ) {
	 transform_func func = _mesa_transform_tab[psize][mtypes[mtype]];
	 unsigned long *cycles = &(benchmark_tab[psize-1][mtype]);

	 if ( test_transform_function( func, psize, mtype, cycles ) == 0 ) {
	    char buf[100];
	    sprintf(buf, "_mesa_transform_tab[0][%d][%s] failed test (%s)",
		    psize, mstrings[mtype], description );
	    _mesa_problem( NULL, "%s", buf );
	 }
#ifdef RUN_DEBUG_BENCHMARK
	 if ( mesa_profile )
	    printf(" %li\t", benchmark_tab[psize-1][mtype] );
#endif
      }
#ifdef RUN_DEBUG_BENCHMARK
      if ( mesa_profile )
	 printf(" | [%s]\n", mstrings[mtype] );
#endif
   }
#ifdef RUN_DEBUG_BENCHMARK
   if ( mesa_profile )
      printf( "\n" );
#endif
}


#endif /* DEBUG_MATH */