3 * Mesa 3-D graphics library
6 * Copyright (C) 1999-2003 Brian Paul All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 #include "main/glheader.h"
30 #include "main/context.h"
31 #include "main/macros.h"
32 #include "main/imports.h"
38 #include "m_debug_util.h"
42 /* The linker doesn't like empty files */
46 #ifdef DEBUG_MATH /* This code only used for debugging */
49 static int m_norm_identity
[16] = {
55 static int m_norm_general
[16] = {
61 static int m_norm_no_rot
[16] = {
67 static int *norm_templates
[8] = {
77 static int norm_types
[8] = {
78 NORM_TRANSFORM_NO_ROT
,
79 NORM_TRANSFORM_NO_ROT
| NORM_RESCALE
,
80 NORM_TRANSFORM_NO_ROT
| NORM_NORMALIZE
,
82 NORM_TRANSFORM
| NORM_RESCALE
,
83 NORM_TRANSFORM
| NORM_NORMALIZE
,
87 static int norm_scale_types
[8] = { /* rescale factor */
88 NIL
, /* NIL disables rescaling */
97 static int norm_normalize_types
[8] = { /* normalizing ?? (no = 0) */
107 static char *norm_strings
[8] = {
108 "NORM_TRANSFORM_NO_ROT",
109 "NORM_TRANSFORM_NO_ROT | NORM_RESCALE",
110 "NORM_TRANSFORM_NO_ROT | NORM_NORMALIZE",
112 "NORM_TRANSFORM | NORM_RESCALE",
113 "NORM_TRANSFORM | NORM_NORMALIZE",
119 /* =============================================================
120 * Reference transformations
123 static void ref_norm_transform_rescale( const GLmatrix
*mat
,
125 const GLvector4f
*in
,
126 const GLfloat
*lengths
,
130 const GLfloat
*s
= in
->start
;
131 const GLfloat
*m
= mat
->inv
;
132 GLfloat (*out
)[4] = (GLfloat (*)[4]) dest
->start
;
136 for ( i
= 0 ; i
< in
->count
; i
++ ) {
139 TRANSFORM_NORMAL( t
, s
, m
);
140 SCALE_SCALAR_3V( out
[i
], scale
, t
);
142 s
= (GLfloat
*)((char *)s
+ in
->stride
);
146 static void ref_norm_transform_normalize( const GLmatrix
*mat
,
148 const GLvector4f
*in
,
149 const GLfloat
*lengths
,
153 const GLfloat
*s
= in
->start
;
154 const GLfloat
*m
= mat
->inv
;
155 GLfloat (*out
)[4] = (GLfloat (*)[4]) dest
->start
;
157 for ( i
= 0 ; i
< in
->count
; i
++ ) {
160 TRANSFORM_NORMAL( t
, s
, m
);
163 GLfloat len
= LEN_SQUARED_3FV( t
);
165 /* Hmmm, don't know how we could test the precalculated
168 scale
= 1.0 / SQRTF( len
);
169 SCALE_SCALAR_3V( out
[i
], scale
, t
);
171 out
[i
][0] = out
[i
][1] = out
[i
][2] = 0;
175 SCALE_SCALAR_3V( out
[i
], scale
, t
);
178 s
= (GLfloat
*)((char *)s
+ in
->stride
);
183 /* =============================================================
184 * Normal transformation tests
187 static void init_matrix( GLfloat
*m
)
189 m
[0] = 63.0; m
[4] = 43.0; m
[ 8] = 29.0; m
[12] = 43.0;
190 m
[1] = 55.0; m
[5] = 17.0; m
[ 9] = 31.0; m
[13] = 7.0;
191 m
[2] = 44.0; m
[6] = 9.0; m
[10] = 7.0; m
[14] = 3.0;
192 m
[3] = 11.0; m
[7] = 23.0; m
[11] = 91.0; m
[15] = 9.0;
196 static int test_norm_function( normal_func func
, int mtype
, long *cycles
)
198 GLvector4f source
[1], dest
[1], dest2
[1], ref
[1], ref2
[1];
200 GLfloat s
[TEST_COUNT
][5], d
[TEST_COUNT
][4], r
[TEST_COUNT
][4];
201 GLfloat d2
[TEST_COUNT
][4], r2
[TEST_COUNT
][4], length
[TEST_COUNT
];
205 #ifdef RUN_DEBUG_BENCHMARK
206 int cycle_i
; /* the counter for the benchmarks we run */
211 mat
->m
= (GLfloat
*) _mesa_align_malloc( 16 * sizeof(GLfloat
), 16 );
212 mat
->inv
= m
= mat
->m
;
216 scale
= 1.0F
+ rnd () * norm_scale_types
[mtype
];
218 for ( i
= 0 ; i
< 4 ; i
++ ) {
219 for ( j
= 0 ; j
< 4 ; j
++ ) {
220 switch ( norm_templates
[mtype
][i
* 4 + j
] ) {
238 for ( i
= 0 ; i
< TEST_COUNT
; i
++ ) {
239 ASSIGN_3V( d
[i
], 0.0, 0.0, 0.0 );
240 ASSIGN_3V( s
[i
], 0.0, 0.0, 0.0 );
241 ASSIGN_3V( d2
[i
], 0.0, 0.0, 0.0 );
242 for ( j
= 0 ; j
< 3 ; j
++ )
244 length
[i
] = 1 / SQRTF( LEN_SQUARED_3FV( s
[i
] ) );
247 source
->data
= (GLfloat(*)[4]) s
;
248 source
->start
= (GLfloat
*) s
;
249 source
->count
= TEST_COUNT
;
250 source
->stride
= sizeof(s
[0]);
254 dest
->start
= (GLfloat
*) d
;
255 dest
->count
= TEST_COUNT
;
256 dest
->stride
= sizeof(float[4]);
260 dest2
->start
= (GLfloat
*) d2
;
261 dest2
->count
= TEST_COUNT
;
262 dest2
->stride
= sizeof(float[4]);
266 ref
->start
= (GLfloat
*) r
;
267 ref
->count
= TEST_COUNT
;
268 ref
->stride
= sizeof(float[4]);
272 ref2
->start
= (GLfloat
*) r2
;
273 ref2
->count
= TEST_COUNT
;
274 ref2
->stride
= sizeof(float[4]);
277 if ( norm_normalize_types
[mtype
] == 0 ) {
278 ref_norm_transform_rescale( mat
, scale
, source
, NULL
, ref
);
280 ref_norm_transform_normalize( mat
, scale
, source
, NULL
, ref
);
281 ref_norm_transform_normalize( mat
, scale
, source
, length
, ref2
);
284 if ( mesa_profile
) {
285 BEGIN_RACE( *cycles
);
286 func( mat
, scale
, source
, NULL
, dest
);
288 func( mat
, scale
, source
, length
, dest2
);
290 func( mat
, scale
, source
, NULL
, dest
);
291 func( mat
, scale
, source
, length
, dest2
);
294 for ( i
= 0 ; i
< TEST_COUNT
; i
++ ) {
295 for ( j
= 0 ; j
< 3 ; j
++ ) {
296 if ( significand_match( d
[i
][j
], r
[i
][j
] ) < REQUIRED_PRECISION
) {
297 printf( "-----------------------------\n" );
298 printf( "(i = %i, j = %i)\n", i
, j
);
299 printf( "%f \t %f \t [ratio = %e - %i bit missed]\n",
300 d
[i
][0], r
[i
][0], r
[i
][0]/d
[i
][0],
301 MAX_PRECISION
- significand_match( d
[i
][0], r
[i
][0] ) );
302 printf( "%f \t %f \t [ratio = %e - %i bit missed]\n",
303 d
[i
][1], r
[i
][1], r
[i
][1]/d
[i
][1],
304 MAX_PRECISION
- significand_match( d
[i
][1], r
[i
][1] ) );
305 printf( "%f \t %f \t [ratio = %e - %i bit missed]\n",
306 d
[i
][2], r
[i
][2], r
[i
][2]/d
[i
][2],
307 MAX_PRECISION
- significand_match( d
[i
][2], r
[i
][2] ) );
311 if ( norm_normalize_types
[mtype
] != 0 ) {
312 if ( significand_match( d2
[i
][j
], r2
[i
][j
] ) < REQUIRED_PRECISION
) {
313 printf( "------------------- precalculated length case ------\n" );
314 printf( "(i = %i, j = %i)\n", i
, j
);
315 printf( "%f \t %f \t [ratio = %e - %i bit missed]\n",
316 d2
[i
][0], r2
[i
][0], r2
[i
][0]/d2
[i
][0],
317 MAX_PRECISION
- significand_match( d2
[i
][0], r2
[i
][0] ) );
318 printf( "%f \t %f \t [ratio = %e - %i bit missed]\n",
319 d2
[i
][1], r2
[i
][1], r2
[i
][1]/d2
[i
][1],
320 MAX_PRECISION
- significand_match( d2
[i
][1], r2
[i
][1] ) );
321 printf( "%f \t %f \t [ratio = %e - %i bit missed]\n",
322 d2
[i
][2], r2
[i
][2], r2
[i
][2]/d2
[i
][2],
323 MAX_PRECISION
- significand_match( d2
[i
][2], r2
[i
][2] ) );
330 _mesa_align_free( mat
->m
);
334 void _math_test_all_normal_transform_functions( char *description
)
337 long benchmark_tab
[0xf];
338 static int first_time
= 1;
342 mesa_profile
= _mesa_getenv( "MESA_PROFILE" );
345 #ifdef RUN_DEBUG_BENCHMARK
346 if ( mesa_profile
) {
347 if ( !counter_overhead
) {
349 printf( "counter overhead: %ld cycles\n\n", counter_overhead
);
351 printf( "normal transform results after hooking in %s functions:\n",
353 printf( "\n-------------------------------------------------------\n" );
357 for ( mtype
= 0 ; mtype
< 8 ; mtype
++ ) {
358 normal_func func
= _mesa_normal_tab
[norm_types
[mtype
]];
359 long *cycles
= &benchmark_tab
[mtype
];
361 if ( test_norm_function( func
, mtype
, cycles
) == 0 ) {
363 sprintf( buf
, "_mesa_normal_tab[0][%s] failed test (%s)",
364 norm_strings
[mtype
], description
);
365 _mesa_problem( NULL
, "%s", buf
);
368 #ifdef RUN_DEBUG_BENCHMARK
369 if ( mesa_profile
) {
370 printf( " %li\t", benchmark_tab
[mtype
] );
371 printf( " | [%s]\n", norm_strings
[mtype
] );
375 #ifdef RUN_DEBUG_BENCHMARK
376 if ( mesa_profile
) {
383 #endif /* DEBUG_MATH */