2
* Mesa 3-D graphics library
5
* Copyright (C) 1999-2005 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.
28
#include "main/glheader.h"
29
#include "main/context.h"
30
#include "main/macros.h"
31
#include "main/imports.h"
37
#include "m_debug_util.h"
40
/* The linker doesn't like empty files */
44
#ifdef DEBUG_MATH /* This code only used for debugging */
46
static clip_func *clip_tab[2] = {
50
static char *cnames[2] = {
54
#ifdef RUN_DEBUG_BENCHMARK
55
static char *cstrings[2] = {
56
"clip, perspective divide",
62
/* =============================================================
66
static GLvector4f *ref_cliptest_points4( GLvector4f *clip_vec,
72
const GLuint stride = clip_vec->stride;
73
const GLuint count = clip_vec->count;
74
const GLfloat *from = (GLfloat *)clip_vec->start;
76
GLfloat (*vProj)[4] = (GLfloat (*)[4])proj_vec->start;
77
GLubyte tmpAndMask = *andMask;
78
GLubyte tmpOrMask = *orMask;
80
for ( i = 0 ; i < count ; i++, STRIDE_F(from, stride) ) {
81
const GLfloat cx = from[0];
82
const GLfloat cy = from[1];
83
const GLfloat cz = from[2];
84
const GLfloat cw = from[3];
86
if ( -cx + cw < 0 ) mask |= CLIP_RIGHT_BIT;
87
if ( cx + cw < 0 ) mask |= CLIP_LEFT_BIT;
88
if ( -cy + cw < 0 ) mask |= CLIP_TOP_BIT;
89
if ( cy + cw < 0 ) mask |= CLIP_BOTTOM_BIT;
90
if ( -cz + cw < 0 ) mask |= CLIP_FAR_BIT;
91
if ( cz + cw < 0 ) mask |= CLIP_NEAR_BIT;
102
GLfloat oow = 1.0F / cw;
103
vProj[i][0] = cx * oow;
104
vProj[i][1] = cy * oow;
105
vProj[i][2] = cz * oow;
111
*andMask = (GLubyte) (c < count ? 0 : tmpAndMask);
113
proj_vec->flags |= VEC_SIZE_4;
115
proj_vec->count = clip_vec->count;
119
/* Keep these here for now, even though we don't use them...
121
static GLvector4f *ref_cliptest_points3( GLvector4f *clip_vec,
122
GLvector4f *proj_vec,
127
const GLuint stride = clip_vec->stride;
128
const GLuint count = clip_vec->count;
129
const GLfloat *from = (GLfloat *)clip_vec->start;
131
GLubyte tmpOrMask = *orMask;
132
GLubyte tmpAndMask = *andMask;
134
for ( i = 0 ; i < count ; i++, STRIDE_F(from, stride) ) {
135
const GLfloat cx = from[0], cy = from[1], cz = from[2];
137
if ( cx > 1.0 ) mask |= CLIP_RIGHT_BIT;
138
else if ( cx < -1.0 ) mask |= CLIP_LEFT_BIT;
139
if ( cy > 1.0 ) mask |= CLIP_TOP_BIT;
140
else if ( cy < -1.0 ) mask |= CLIP_BOTTOM_BIT;
141
if ( cz > 1.0 ) mask |= CLIP_FAR_BIT;
142
else if ( cz < -1.0 ) mask |= CLIP_NEAR_BIT;
149
*andMask = tmpAndMask;
153
static GLvector4f * ref_cliptest_points2( GLvector4f *clip_vec,
154
GLvector4f *proj_vec,
159
const GLuint stride = clip_vec->stride;
160
const GLuint count = clip_vec->count;
161
const GLfloat *from = (GLfloat *)clip_vec->start;
163
GLubyte tmpOrMask = *orMask;
164
GLubyte tmpAndMask = *andMask;
166
for ( i = 0 ; i < count ; i++, STRIDE_F(from, stride) ) {
167
const GLfloat cx = from[0], cy = from[1];
169
if ( cx > 1.0 ) mask |= CLIP_RIGHT_BIT;
170
else if ( cx < -1.0 ) mask |= CLIP_LEFT_BIT;
171
if ( cy > 1.0 ) mask |= CLIP_TOP_BIT;
172
else if ( cy < -1.0 ) mask |= CLIP_BOTTOM_BIT;
179
*andMask = tmpAndMask;
183
static clip_func ref_cliptest[5] = {
186
ref_cliptest_points2,
187
ref_cliptest_points3,
192
/* =============================================================
196
ALIGN16(static GLfloat, s[TEST_COUNT][4]);
197
ALIGN16(static GLfloat, d[TEST_COUNT][4]);
198
ALIGN16(static GLfloat, r[TEST_COUNT][4]);
201
static int test_cliptest_function( clip_func func, int np,
202
int psize, long *cycles )
204
GLvector4f source[1], dest[1], ref[1];
205
GLubyte dm[TEST_COUNT], dco, dca;
206
GLubyte rm[TEST_COUNT], rco, rca;
208
#ifdef RUN_DEBUG_BENCHMARK
209
int cycle_i; /* the counter for the benchmarks we run */
215
_mesa_problem( NULL, "test_cliptest_function called with psize > 4\n" );
219
for ( i = 0 ; i < TEST_COUNT ; i++) {
220
ASSIGN_4V( d[i], 0.0, 0.0, 0.0, 1.0 );
221
ASSIGN_4V( s[i], 0.0, 0.0, 0.0, 1.0 );
222
for ( j = 0 ; j < psize ; j++ )
226
source->data = (GLfloat(*)[4])s;
227
source->start = (GLfloat *)s;
228
source->count = TEST_COUNT;
229
source->stride = sizeof(s[0]);
233
dest->data = (GLfloat(*)[4])d;
234
dest->start = (GLfloat *)d;
235
dest->count = TEST_COUNT;
236
dest->stride = sizeof(float[4]);
240
ref->data = (GLfloat(*)[4])r;
241
ref->start = (GLfloat *)r;
242
ref->count = TEST_COUNT;
243
ref->stride = sizeof(float[4]);
248
dca = rca = CLIP_FRUSTUM_BITS;
250
ref_cliptest[psize]( source, ref, rm, &rco, &rca );
252
if ( mesa_profile ) {
253
BEGIN_RACE( *cycles );
254
func( source, dest, dm, &dco, &dca );
258
func( source, dest, dm, &dco, &dca );
262
_mesa_printf( "\n-----------------------------\n" );
263
_mesa_printf( "dco = 0x%02x rco = 0x%02x\n", dco, rco );
267
_mesa_printf( "\n-----------------------------\n" );
268
_mesa_printf( "dca = 0x%02x rca = 0x%02x\n", dca, rca );
271
for ( i = 0 ; i < TEST_COUNT ; i++ ) {
272
if ( dm[i] != rm[i] ) {
273
_mesa_printf( "\n-----------------------------\n" );
274
_mesa_printf( "(i = %i)\n", i );
275
_mesa_printf( "dm = 0x%02x rm = 0x%02x\n", dm[i], rm[i] );
280
/* Only verify output on projected points4 case. FIXME: Do we need
281
* to test other cases?
283
if ( np || psize < 4 )
286
for ( i = 0 ; i < TEST_COUNT ; i++ ) {
287
for ( j = 0 ; j < 4 ; j++ ) {
288
if ( significand_match( d[i][j], r[i][j] ) < REQUIRED_PRECISION ) {
289
_mesa_printf( "\n-----------------------------\n" );
290
_mesa_printf( "(i = %i, j = %i) dm = 0x%02x rm = 0x%02x\n",
291
i, j, dm[i], rm[i] );
292
_mesa_printf( "%f \t %f \t [diff = %e - %i bit missed]\n",
293
d[i][0], r[i][0], r[i][0]-d[i][0],
294
MAX_PRECISION - significand_match( d[i][0], r[i][0] ) );
295
_mesa_printf( "%f \t %f \t [diff = %e - %i bit missed]\n",
296
d[i][1], r[i][1], r[i][1]-d[i][1],
297
MAX_PRECISION - significand_match( d[i][1], r[i][1] ) );
298
_mesa_printf( "%f \t %f \t [diff = %e - %i bit missed]\n",
299
d[i][2], r[i][2], r[i][2]-d[i][2],
300
MAX_PRECISION - significand_match( d[i][2], r[i][2] ) );
301
_mesa_printf( "%f \t %f \t [diff = %e - %i bit missed]\n",
302
d[i][3], r[i][3], r[i][3]-d[i][3],
303
MAX_PRECISION - significand_match( d[i][3], r[i][3] ) );
312
void _math_test_all_cliptest_functions( char *description )
315
long benchmark_tab[2][4];
316
static int first_time = 1;
320
mesa_profile = _mesa_getenv( "MESA_PROFILE" );
323
#ifdef RUN_DEBUG_BENCHMARK
324
if ( mesa_profile ) {
325
if ( !counter_overhead ) {
327
_mesa_printf( "counter overhead: %ld cycles\n\n", counter_overhead );
329
_mesa_printf( "cliptest results after hooking in %s functions:\n", description );
333
#ifdef RUN_DEBUG_BENCHMARK
334
if ( mesa_profile ) {
335
_mesa_printf( "\n\t" );
336
for ( psize = 2 ; psize <= 4 ; psize++ ) {
337
_mesa_printf( " p%d\t", psize );
339
_mesa_printf( "\n--------------------------------------------------------\n\t" );
343
for ( np = 0 ; np < 2 ; np++ ) {
344
for ( psize = 2 ; psize <= 4 ; psize++ ) {
345
clip_func func = clip_tab[np][psize];
346
long *cycles = &(benchmark_tab[np][psize-1]);
348
if ( test_cliptest_function( func, np, psize, cycles ) == 0 ) {
350
_mesa_sprintf( buf, "%s[%d] failed test (%s)",
351
cnames[np], psize, description );
352
_mesa_problem( NULL, buf );
354
#ifdef RUN_DEBUG_BENCHMARK
356
_mesa_printf( " %li\t", benchmark_tab[np][psize-1] );
359
#ifdef RUN_DEBUG_BENCHMARK
361
_mesa_printf( " | [%s]\n\t", cstrings[np] );
364
#ifdef RUN_DEBUG_BENCHMARK
366
_mesa_printf( "\n" );
371
#endif /* DEBUG_MATH */