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.
38 #include "m_debug_util.h"
41 #ifdef DEBUG /* This code only used for debugging */
44 static int m_norm_identity
[16] = {
50 static int m_norm_general
[16] = {
56 static int m_norm_no_rot
[16] = {
62 static int *norm_templates
[8] = {
72 static int norm_types
[8] = {
73 NORM_TRANSFORM_NO_ROT
,
74 NORM_TRANSFORM_NO_ROT
| NORM_RESCALE
,
75 NORM_TRANSFORM_NO_ROT
| NORM_NORMALIZE
,
77 NORM_TRANSFORM
| NORM_RESCALE
,
78 NORM_TRANSFORM
| NORM_NORMALIZE
,
82 static int norm_scale_types
[8] = { /* rescale factor */
83 NIL
, /* NIL disables rescaling */
92 static int norm_normalize_types
[8] = { /* normalizing ?? (no = 0) */
102 static char *norm_strings
[8] = {
103 "NORM_TRANSFORM_NO_ROT",
104 "NORM_TRANSFORM_NO_ROT | NORM_RESCALE",
105 "NORM_TRANSFORM_NO_ROT | NORM_NORMALIZE",
107 "NORM_TRANSFORM | NORM_RESCALE",
108 "NORM_TRANSFORM | NORM_NORMALIZE",
114 /* =============================================================
115 * Reference transformations
118 static void ref_norm_transform_rescale( const GLmatrix
*mat
,
120 const GLvector4f
*in
,
121 const GLfloat
*lengths
,
125 const GLfloat
*s
= in
->start
;
126 const GLfloat
*m
= mat
->inv
;
127 GLfloat (*out
)[4] = (GLfloat (*)[4]) dest
->start
;
131 for ( i
= 0 ; i
< in
->count
; i
++ ) {
134 TRANSFORM_NORMAL( t
, s
, m
);
135 SCALE_SCALAR_3V( out
[i
], scale
, t
);
137 s
= (GLfloat
*)((char *)s
+ in
->stride
);
141 static void ref_norm_transform_normalize( const GLmatrix
*mat
,
143 const GLvector4f
*in
,
144 const GLfloat
*lengths
,
148 const GLfloat
*s
= in
->start
;
149 const GLfloat
*m
= mat
->inv
;
150 GLfloat (*out
)[4] = (GLfloat (*)[4]) dest
->start
;
152 for ( i
= 0 ; i
< in
->count
; i
++ ) {
155 TRANSFORM_NORMAL( t
, s
, m
);
158 GLfloat len
= LEN_SQUARED_3FV( t
);
160 /* Hmmm, don't know how we could test the precalculated
163 scale
= 1.0 / sqrt( len
);
164 SCALE_SCALAR_3V( out
[i
], scale
, t
);
166 out
[i
][0] = out
[i
][1] = out
[i
][2] = 0;
170 SCALE_SCALAR_3V( out
[i
], scale
, t
);
173 s
= (GLfloat
*)((char *)s
+ in
->stride
);
178 /* =============================================================
179 * Normal transformation tests
182 static void init_matrix( GLfloat
*m
)
184 m
[0] = 63.0; m
[4] = 43.0; m
[ 8] = 29.0; m
[12] = 43.0;
185 m
[1] = 55.0; m
[5] = 17.0; m
[ 9] = 31.0; m
[13] = 7.0;
186 m
[2] = 44.0; m
[6] = 9.0; m
[10] = 7.0; m
[14] = 3.0;
187 m
[3] = 11.0; m
[7] = 23.0; m
[11] = 91.0; m
[15] = 9.0;
191 static int test_norm_function( normal_func func
, int mtype
, long *cycles
)
193 GLvector4f source
[1], dest
[1], dest2
[1], ref
[1], ref2
[1];
195 GLfloat s
[TEST_COUNT
][5], d
[TEST_COUNT
][4], r
[TEST_COUNT
][4];
196 GLfloat d2
[TEST_COUNT
][4], r2
[TEST_COUNT
][4], length
[TEST_COUNT
];
200 #ifdef RUN_DEBUG_BENCHMARK
201 int cycle_i
; /* the counter for the benchmarks we run */
206 mat
->m
= (GLfloat
*) ALIGN_MALLOC( 16 * sizeof(GLfloat
), 16 );
207 mat
->inv
= m
= mat
->m
;
211 scale
= 1.0F
+ rnd () * norm_scale_types
[mtype
];
213 for ( i
= 0 ; i
< 4 ; i
++ ) {
214 for ( j
= 0 ; j
< 4 ; j
++ ) {
215 switch ( norm_templates
[mtype
][i
* 4 + j
] ) {
233 for ( i
= 0 ; i
< TEST_COUNT
; i
++ ) {
234 ASSIGN_3V( d
[i
], 0.0, 0.0, 0.0 );
235 ASSIGN_3V( s
[i
], 0.0, 0.0, 0.0 );
236 ASSIGN_3V( d2
[i
], 0.0, 0.0, 0.0 );
237 for ( j
= 0 ; j
< 3 ; j
++ )
239 length
[i
] = 1 / sqrt( LEN_SQUARED_3FV( s
[i
] ) );
242 source
->data
= (GLfloat(*)[4]) s
;
243 source
->start
= (GLfloat
*) s
;
244 source
->count
= TEST_COUNT
;
245 source
->stride
= sizeof(s
[0]);
249 dest
->start
= (GLfloat
*) d
;
250 dest
->count
= TEST_COUNT
;
251 dest
->stride
= sizeof(float[4]);
255 dest2
->start
= (GLfloat
*) d2
;
256 dest2
->count
= TEST_COUNT
;
257 dest2
->stride
= sizeof(float[4]);
261 ref
->start
= (GLfloat
*) r
;
262 ref
->count
= TEST_COUNT
;
263 ref
->stride
= sizeof(float[4]);
267 ref2
->start
= (GLfloat
*) r2
;
268 ref2
->count
= TEST_COUNT
;
269 ref2
->stride
= sizeof(float[4]);
272 if ( norm_normalize_types
[mtype
] == 0 ) {
273 ref_norm_transform_rescale( mat
, scale
, source
, NULL
, ref
);
275 ref_norm_transform_normalize( mat
, scale
, source
, NULL
, ref
);
276 ref_norm_transform_normalize( mat
, scale
, source
, length
, ref2
);
279 if ( mesa_profile
) {
280 BEGIN_RACE( *cycles
);
281 func( mat
, scale
, source
, NULL
, dest
);
283 func( mat
, scale
, source
, length
, dest2
);
285 func( mat
, scale
, source
, NULL
, dest
);
286 func( mat
, scale
, source
, length
, dest2
);
289 for ( i
= 0 ; i
< TEST_COUNT
; i
++ ) {
290 for ( j
= 0 ; j
< 3 ; j
++ ) {
291 if ( significand_match( d
[i
][j
], r
[i
][j
] ) < REQUIRED_PRECISION
) {
292 _mesa_printf( "-----------------------------\n" );
293 _mesa_printf( "(i = %i, j = %i)\n", i
, j
);
294 _mesa_printf( "%f \t %f \t [ratio = %e - %i bit missed]\n",
295 d
[i
][0], r
[i
][0], r
[i
][0]/d
[i
][0],
296 MAX_PRECISION
- significand_match( d
[i
][0], r
[i
][0] ) );
297 _mesa_printf( "%f \t %f \t [ratio = %e - %i bit missed]\n",
298 d
[i
][1], r
[i
][1], r
[i
][1]/d
[i
][1],
299 MAX_PRECISION
- significand_match( d
[i
][1], r
[i
][1] ) );
300 _mesa_printf( "%f \t %f \t [ratio = %e - %i bit missed]\n",
301 d
[i
][2], r
[i
][2], r
[i
][2]/d
[i
][2],
302 MAX_PRECISION
- significand_match( d
[i
][2], r
[i
][2] ) );
306 if ( norm_normalize_types
[mtype
] != 0 ) {
307 if ( significand_match( d2
[i
][j
], r2
[i
][j
] ) < REQUIRED_PRECISION
) {
308 _mesa_printf( "------------------- precalculated length case ------\n" );
309 _mesa_printf( "(i = %i, j = %i)\n", i
, j
);
310 _mesa_printf( "%f \t %f \t [ratio = %e - %i bit missed]\n",
311 d2
[i
][0], r2
[i
][0], r2
[i
][0]/d2
[i
][0],
312 MAX_PRECISION
- significand_match( d2
[i
][0], r2
[i
][0] ) );
313 _mesa_printf( "%f \t %f \t [ratio = %e - %i bit missed]\n",
314 d2
[i
][1], r2
[i
][1], r2
[i
][1]/d2
[i
][1],
315 MAX_PRECISION
- significand_match( d2
[i
][1], r2
[i
][1] ) );
316 _mesa_printf( "%f \t %f \t [ratio = %e - %i bit missed]\n",
317 d2
[i
][2], r2
[i
][2], r2
[i
][2]/d2
[i
][2],
318 MAX_PRECISION
- significand_match( d2
[i
][2], r2
[i
][2] ) );
325 ALIGN_FREE( mat
->m
);
329 void _math_test_all_normal_transform_functions( char *description
)
332 long benchmark_tab
[0xf];
333 static int first_time
= 1;
337 mesa_profile
= getenv( "MESA_PROFILE" );
340 #ifdef RUN_DEBUG_BENCHMARK
341 if ( mesa_profile
) {
342 if ( !counter_overhead
) {
344 _mesa_printf( "counter overhead: %ld cycles\n\n", counter_overhead
);
346 _mesa_printf( "normal transform results after hooking in %s functions:\n",
348 _mesa_printf( "\n-------------------------------------------------------\n" );
352 for ( mtype
= 0 ; mtype
< 8 ; mtype
++ ) {
353 normal_func func
= _mesa_normal_tab
[norm_types
[mtype
]];
354 long *cycles
= &benchmark_tab
[mtype
];
356 if ( test_norm_function( func
, mtype
, cycles
) == 0 ) {
358 _mesa_sprintf( buf
, "_mesa_normal_tab[0][%s] failed test (%s)",
359 norm_strings
[mtype
], description
);
360 _mesa_problem( NULL
, buf
);
363 #ifdef RUN_DEBUG_BENCHMARK
364 if ( mesa_profile
) {
365 _mesa_printf( " %li\t", benchmark_tab
[mtype
] );
366 _mesa_printf( " | [%s]\n", norm_strings
[mtype
] );
370 #ifdef RUN_DEBUG_BENCHMARK
371 if ( mesa_profile
) {
372 _mesa_printf( "\n" );