WebSVN - shark - Rev 133 - /shark/trunk/ports/mesa/src/math/m_debug

/* $Id: m_debug_xform.c,v 1.1 2003-02-28 11:48:05 pj Exp $ */

/*
* Mesa 3-D graphics library
* Version: 3.5
*
* Copyright (C) 1999-2001 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 "glheader.h"
#include "context.h"
#include "macros.h"
#include "imports.h"

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

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

#ifdef DEBUG /* 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 int 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;
}

static GLfloat s[TEST_COUNT][4] ALIGN16;
static GLfloat d[TEST_COUNT][4] ALIGN16;
static GLfloat r[TEST_COUNT][4] ALIGN16;

static int test_transform_function( transform_func func, int psize,
int mtype, 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 *) ALIGN_MALLOC( 16 * sizeof(GLfloat), 16 );
mat->type = mtypes[mtype];

m = mat->m;
ASSERT( ((GLuint)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:
abort();
}
}
}

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 ) {
_mesa_printf(NULL, "-----------------------------\n" );
_mesa_printf(NULL, "(i = %i, j = %i)\n", i, j );
_mesa_printf(NULL, "%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] ) );
_mesa_printf(NULL, "%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] ) );
_mesa_printf(NULL, "%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] ) );
_mesa_printf(NULL, "%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;
}
}
}

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

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

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

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

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

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

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

#endif /* DEBUG */

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(root)/shark/trunk/ports/mesa/src/math/m_debug_xform.c - Rev 133