2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 * Updated for P6 architecture by Gareth Hughes.
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"
41 /* The linker doesn't like empty files */
45 #ifdef DEBUG_MATH /* This code only used for debugging */
48 /* Overhead of profiling counter in cycles. Automatically adjusted to
49 * your machine at run time - counter initialization should give very
52 long counter_overhead = 0;
54 /* This is the value of the environment variable MESA_PROFILE, and is
55 * used to determine if we should benchmark the functions as well as
56 * verify their correctness.
58 char *mesa_profile = NULL;
61 static int m_general[16] = {
67 static int m_identity[16] = {
73 static int m_2d[16] = {
79 static int m_2d_no_rot[16] = {
85 static int m_3d[16] = {
91 static int m_3d_no_rot[16] = {
97 static int m_perspective[16] = {
103 static int *templates[7] = {
112 static enum GLmatrixtype mtypes[7] = {
121 static char *mstrings[7] = {
125 "MATRIX_PERSPECTIVE",
132 /* =============================================================
133 * Reference transformations
136 static void ref_transform( GLvector4f *dst,
138 const GLvector4f *src )
141 GLfloat *s = (GLfloat *)src->start;
142 GLfloat (*d)[4] = (GLfloat (*)[4])dst->start;
143 const GLfloat *m = mat->m;
145 for ( i = 0 ; i < src->count ; i++ ) {
146 TRANSFORM_POINT( d[i], m, s );
147 s = (GLfloat *)((char *)s + src->stride);
152 /* =============================================================
153 * Vertex transformation tests
156 static void init_matrix( GLfloat *m )
158 m[0] = 63.0; m[4] = 43.0; m[ 8] = 29.0; m[12] = 43.0;
159 m[1] = 55.0; m[5] = 17.0; m[ 9] = 31.0; m[13] = 7.0;
160 m[2] = 44.0; m[6] = 9.0; m[10] = 7.0; m[14] = 3.0;
161 m[3] = 11.0; m[7] = 23.0; m[11] = 91.0; m[15] = 9.0;
164 ALIGN16(static GLfloat, s[TEST_COUNT][4]);
165 ALIGN16(static GLfloat, d[TEST_COUNT][4]);
166 ALIGN16(static GLfloat, r[TEST_COUNT][4]);
168 static int test_transform_function( transform_func func, int psize,
169 int mtype, unsigned long *cycles )
171 GLvector4f source[1], dest[1], ref[1];
175 #ifdef RUN_DEBUG_BENCHMARK
176 int cycle_i; /* the counter for the benchmarks we run */
182 _mesa_problem( NULL, "test_transform_function called with psize > 4\n" );
186 mat->m = (GLfloat *) _mesa_align_malloc( 16 * sizeof(GLfloat), 16 );
187 mat->type = mtypes[mtype];
190 ASSERT( ((long)m & 15) == 0 );
194 for ( i = 0 ; i < 4 ; i++ ) {
195 for ( j = 0 ; j < 4 ; j++ ) {
196 switch ( templates[mtype][i * 4 + j] ) {
215 for ( i = 0 ; i < TEST_COUNT ; i++) {
216 ASSIGN_4V( d[i], 0.0, 0.0, 0.0, 1.0 );
217 ASSIGN_4V( s[i], 0.0, 0.0, 0.0, 1.0 );
218 for ( j = 0 ; j < psize ; j++ )
222 source->data = (GLfloat(*)[4])s;
223 source->start = (GLfloat *)s;
224 source->count = TEST_COUNT;
225 source->stride = sizeof(s[0]);
229 dest->data = (GLfloat(*)[4])d;
230 dest->start = (GLfloat *)d;
231 dest->count = TEST_COUNT;
232 dest->stride = sizeof(float[4]);
236 ref->data = (GLfloat(*)[4])r;
237 ref->start = (GLfloat *)r;
238 ref->count = TEST_COUNT;
239 ref->stride = sizeof(float[4]);
243 ref_transform( ref, mat, source );
245 if ( mesa_profile ) {
246 BEGIN_RACE( *cycles );
247 func( dest, mat->m, source );
251 func( dest, mat->m, source );
254 for ( i = 0 ; i < TEST_COUNT ; i++ ) {
255 for ( j = 0 ; j < 4 ; j++ ) {
256 if ( significand_match( d[i][j], r[i][j] ) < REQUIRED_PRECISION ) {
257 printf("-----------------------------\n" );
258 printf("(i = %i, j = %i)\n", i, j );
259 printf("%f \t %f \t [diff = %e - %i bit missed]\n",
260 d[i][0], r[i][0], r[i][0]-d[i][0],
261 MAX_PRECISION - significand_match( d[i][0], r[i][0] ) );
262 printf("%f \t %f \t [diff = %e - %i bit missed]\n",
263 d[i][1], r[i][1], r[i][1]-d[i][1],
264 MAX_PRECISION - significand_match( d[i][1], r[i][1] ) );
265 printf("%f \t %f \t [diff = %e - %i bit missed]\n",
266 d[i][2], r[i][2], r[i][2]-d[i][2],
267 MAX_PRECISION - significand_match( d[i][2], r[i][2] ) );
268 printf("%f \t %f \t [diff = %e - %i bit missed]\n",
269 d[i][3], r[i][3], r[i][3]-d[i][3],
270 MAX_PRECISION - significand_match( d[i][3], r[i][3] ) );
276 _mesa_align_free( mat->m );
280 void _math_test_all_transform_functions( char *description )
283 unsigned long benchmark_tab[4][7];
284 static int first_time = 1;
288 mesa_profile = _mesa_getenv( "MESA_PROFILE" );
291 #ifdef RUN_DEBUG_BENCHMARK
292 if ( mesa_profile ) {
293 if ( !counter_overhead ) {
295 printf("counter overhead: %lu cycles\n\n", counter_overhead );
297 printf("transform results after hooking in %s functions:\n", description );
301 #ifdef RUN_DEBUG_BENCHMARK
302 if ( mesa_profile ) {
304 for ( psize = 1 ; psize <= 4 ; psize++ ) {
305 printf(" p%d\t", psize );
307 printf("\n--------------------------------------------------------\n" );
311 for ( mtype = 0 ; mtype < 7 ; mtype++ ) {
312 for ( psize = 1 ; psize <= 4 ; psize++ ) {
313 transform_func func = _mesa_transform_tab[psize][mtypes[mtype]];
314 unsigned long *cycles = &(benchmark_tab[psize-1][mtype]);
316 if ( test_transform_function( func, psize, mtype, cycles ) == 0 ) {
318 sprintf(buf, "_mesa_transform_tab[0][%d][%s] failed test (%s)",
319 psize, mstrings[mtype], description );
320 _mesa_problem( NULL, "%s", buf );
322 #ifdef RUN_DEBUG_BENCHMARK
324 printf(" %li\t", benchmark_tab[psize-1][mtype] );
327 #ifdef RUN_DEBUG_BENCHMARK
329 printf(" | [%s]\n", mstrings[mtype] );
332 #ifdef RUN_DEBUG_BENCHMARK
339 #endif /* DEBUG_MATH */