aboutsummaryrefslogtreecommitdiff
path: root/mesalib/src/mesa/math/m_debug_norm.c
diff options
context:
space:
mode:
Diffstat (limited to 'mesalib/src/mesa/math/m_debug_norm.c')
-rw-r--r--mesalib/src/mesa/math/m_debug_norm.c383
1 files changed, 383 insertions, 0 deletions
diff --git a/mesalib/src/mesa/math/m_debug_norm.c b/mesalib/src/mesa/math/m_debug_norm.c
new file mode 100644
index 000000000..89c632e7d
--- /dev/null
+++ b/mesalib/src/mesa/math/m_debug_norm.c
@@ -0,0 +1,383 @@
+
+/*
+ * Mesa 3-D graphics library
+ * Version: 5.1
+ *
+ * Copyright (C) 1999-2003 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.
+ *
+ * Authors:
+ * Gareth Hughes
+ */
+
+#include "main/glheader.h"
+#include "main/context.h"
+#include "main/macros.h"
+#include "main/imports.h"
+
+#include "m_matrix.h"
+#include "m_xform.h"
+
+#include "m_debug.h"
+#include "m_debug_util.h"
+
+
+#ifdef __UNIXOS2__
+/* The linker doesn't like empty files */
+static char dummy;
+#endif
+
+#ifdef DEBUG_MATH /* This code only used for debugging */
+
+
+static int m_norm_identity[16] = {
+ ONE, NIL, NIL, NIL,
+ NIL, ONE, NIL, NIL,
+ NIL, NIL, ONE, NIL,
+ NIL, NIL, NIL, NIL
+};
+static int m_norm_general[16] = {
+ VAR, VAR, VAR, NIL,
+ VAR, VAR, VAR, NIL,
+ VAR, VAR, VAR, NIL,
+ NIL, NIL, NIL, NIL
+};
+static int m_norm_no_rot[16] = {
+ VAR, NIL, NIL, NIL,
+ NIL, VAR, NIL, NIL,
+ NIL, NIL, VAR, NIL,
+ NIL, NIL, NIL, NIL
+};
+static int *norm_templates[8] = {
+ m_norm_no_rot,
+ m_norm_no_rot,
+ m_norm_no_rot,
+ m_norm_general,
+ m_norm_general,
+ m_norm_general,
+ m_norm_identity,
+ m_norm_identity
+};
+static int norm_types[8] = {
+ NORM_TRANSFORM_NO_ROT,
+ NORM_TRANSFORM_NO_ROT | NORM_RESCALE,
+ NORM_TRANSFORM_NO_ROT | NORM_NORMALIZE,
+ NORM_TRANSFORM,
+ NORM_TRANSFORM | NORM_RESCALE,
+ NORM_TRANSFORM | NORM_NORMALIZE,
+ NORM_RESCALE,
+ NORM_NORMALIZE
+};
+static int norm_scale_types[8] = { /* rescale factor */
+ NIL, /* NIL disables rescaling */
+ VAR,
+ NIL,
+ NIL,
+ VAR,
+ NIL,
+ VAR,
+ NIL
+};
+static int norm_normalize_types[8] = { /* normalizing ?? (no = 0) */
+ 0,
+ 0,
+ 1,
+ 0,
+ 0,
+ 1,
+ 0,
+ 1
+};
+static char *norm_strings[8] = {
+ "NORM_TRANSFORM_NO_ROT",
+ "NORM_TRANSFORM_NO_ROT | NORM_RESCALE",
+ "NORM_TRANSFORM_NO_ROT | NORM_NORMALIZE",
+ "NORM_TRANSFORM",
+ "NORM_TRANSFORM | NORM_RESCALE",
+ "NORM_TRANSFORM | NORM_NORMALIZE",
+ "NORM_RESCALE",
+ "NORM_NORMALIZE"
+};
+
+
+/* =============================================================
+ * Reference transformations
+ */
+
+static void ref_norm_transform_rescale( const GLmatrix *mat,
+ GLfloat scale,
+ const GLvector4f *in,
+ const GLfloat *lengths,
+ GLvector4f *dest )
+{
+ GLuint i;
+ const GLfloat *s = in->start;
+ const GLfloat *m = mat->inv;
+ GLfloat (*out)[4] = (GLfloat (*)[4]) dest->start;
+
+ (void) lengths;
+
+ for ( i = 0 ; i < in->count ; i++ ) {
+ GLfloat t[3];
+
+ TRANSFORM_NORMAL( t, s, m );
+ SCALE_SCALAR_3V( out[i], scale, t );
+
+ s = (GLfloat *)((char *)s + in->stride);
+ }
+}
+
+static void ref_norm_transform_normalize( const GLmatrix *mat,
+ GLfloat scale,
+ const GLvector4f *in,
+ const GLfloat *lengths,
+ GLvector4f *dest )
+{
+ GLuint i;
+ const GLfloat *s = in->start;
+ const GLfloat *m = mat->inv;
+ GLfloat (*out)[4] = (GLfloat (*)[4]) dest->start;
+
+ for ( i = 0 ; i < in->count ; i++ ) {
+ GLfloat t[3];
+
+ TRANSFORM_NORMAL( t, s, m );
+
+ if ( !lengths ) {
+ GLfloat len = LEN_SQUARED_3FV( t );
+ if ( len > 1e-20 ) {
+ /* Hmmm, don't know how we could test the precalculated
+ * length case...
+ */
+ scale = 1.0 / SQRTF( len );
+ SCALE_SCALAR_3V( out[i], scale, t );
+ } else {
+ out[i][0] = out[i][1] = out[i][2] = 0;
+ }
+ } else {
+ scale = lengths[i];;
+ SCALE_SCALAR_3V( out[i], scale, t );
+ }
+
+ s = (GLfloat *)((char *)s + in->stride);
+ }
+}
+
+
+/* =============================================================
+ * Normal 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 int test_norm_function( normal_func func, int mtype, long *cycles )
+{
+ GLvector4f source[1], dest[1], dest2[1], ref[1], ref2[1];
+ GLmatrix mat[1];
+ GLfloat s[TEST_COUNT][5], d[TEST_COUNT][4], r[TEST_COUNT][4];
+ GLfloat d2[TEST_COUNT][4], r2[TEST_COUNT][4], length[TEST_COUNT];
+ GLfloat scale;
+ GLfloat *m;
+ int i, j;
+#ifdef RUN_DEBUG_BENCHMARK
+ int cycle_i; /* the counter for the benchmarks we run */
+#endif
+
+ (void) cycles;
+
+ mat->m = (GLfloat *) ALIGN_MALLOC( 16 * sizeof(GLfloat), 16 );
+ mat->inv = m = mat->m;
+
+ init_matrix( m );
+
+ scale = 1.0F + rnd () * norm_scale_types[mtype];
+
+ for ( i = 0 ; i < 4 ; i++ ) {
+ for ( j = 0 ; j < 4 ; j++ ) {
+ switch ( norm_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:
+ _mesa_exit(1);
+ }
+ }
+ }
+
+ for ( i = 0 ; i < TEST_COUNT ; i++ ) {
+ ASSIGN_3V( d[i], 0.0, 0.0, 0.0 );
+ ASSIGN_3V( s[i], 0.0, 0.0, 0.0 );
+ ASSIGN_3V( d2[i], 0.0, 0.0, 0.0 );
+ for ( j = 0 ; j < 3 ; j++ )
+ s[i][j] = rnd();
+ length[i] = 1 / SQRTF( LEN_SQUARED_3FV( s[i] ) );
+ }
+
+ source->data = (GLfloat(*)[4]) s;
+ source->start = (GLfloat *) s;
+ source->count = TEST_COUNT;
+ source->stride = sizeof(s[0]);
+ source->flags = 0;
+
+ dest->data = d;
+ dest->start = (GLfloat *) d;
+ dest->count = TEST_COUNT;
+ dest->stride = sizeof(float[4]);
+ dest->flags = 0;
+
+ dest2->data = d2;
+ dest2->start = (GLfloat *) d2;
+ dest2->count = TEST_COUNT;
+ dest2->stride = sizeof(float[4]);
+ dest2->flags = 0;
+
+ ref->data = r;
+ ref->start = (GLfloat *) r;
+ ref->count = TEST_COUNT;
+ ref->stride = sizeof(float[4]);
+ ref->flags = 0;
+
+ ref2->data = r2;
+ ref2->start = (GLfloat *) r2;
+ ref2->count = TEST_COUNT;
+ ref2->stride = sizeof(float[4]);
+ ref2->flags = 0;
+
+ if ( norm_normalize_types[mtype] == 0 ) {
+ ref_norm_transform_rescale( mat, scale, source, NULL, ref );
+ } else {
+ ref_norm_transform_normalize( mat, scale, source, NULL, ref );
+ ref_norm_transform_normalize( mat, scale, source, length, ref2 );
+ }
+
+ if ( mesa_profile ) {
+ BEGIN_RACE( *cycles );
+ func( mat, scale, source, NULL, dest );
+ END_RACE( *cycles );
+ func( mat, scale, source, length, dest2 );
+ } else {
+ func( mat, scale, source, NULL, dest );
+ func( mat, scale, source, length, dest2 );
+ }
+
+ for ( i = 0 ; i < TEST_COUNT ; i++ ) {
+ for ( j = 0 ; j < 3 ; j++ ) {
+ if ( significand_match( d[i][j], r[i][j] ) < REQUIRED_PRECISION ) {
+ _mesa_printf( "-----------------------------\n" );
+ _mesa_printf( "(i = %i, j = %i)\n", i, j );
+ _mesa_printf( "%f \t %f \t [ratio = %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( "%f \t %f \t [ratio = %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( "%f \t %f \t [ratio = %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] ) );
+ return 0;
+ }
+
+ if ( norm_normalize_types[mtype] != 0 ) {
+ if ( significand_match( d2[i][j], r2[i][j] ) < REQUIRED_PRECISION ) {
+ _mesa_printf( "------------------- precalculated length case ------\n" );
+ _mesa_printf( "(i = %i, j = %i)\n", i, j );
+ _mesa_printf( "%f \t %f \t [ratio = %e - %i bit missed]\n",
+ d2[i][0], r2[i][0], r2[i][0]/d2[i][0],
+ MAX_PRECISION - significand_match( d2[i][0], r2[i][0] ) );
+ _mesa_printf( "%f \t %f \t [ratio = %e - %i bit missed]\n",
+ d2[i][1], r2[i][1], r2[i][1]/d2[i][1],
+ MAX_PRECISION - significand_match( d2[i][1], r2[i][1] ) );
+ _mesa_printf( "%f \t %f \t [ratio = %e - %i bit missed]\n",
+ d2[i][2], r2[i][2], r2[i][2]/d2[i][2],
+ MAX_PRECISION - significand_match( d2[i][2], r2[i][2] ) );
+ return 0;
+ }
+ }
+ }
+ }
+
+ ALIGN_FREE( mat->m );
+ return 1;
+}
+
+void _math_test_all_normal_transform_functions( char *description )
+{
+ int mtype;
+ long benchmark_tab[0xf];
+ static int first_time = 1;
+
+ if ( first_time ) {
+ first_time = 0;
+ mesa_profile = _mesa_getenv( "MESA_PROFILE" );
+ }
+
+#ifdef RUN_DEBUG_BENCHMARK
+ if ( mesa_profile ) {
+ if ( !counter_overhead ) {
+ INIT_COUNTER();
+ _mesa_printf( "counter overhead: %ld cycles\n\n", counter_overhead );
+ }
+ _mesa_printf( "normal transform results after hooking in %s functions:\n",
+ description );
+ _mesa_printf( "\n-------------------------------------------------------\n" );
+ }
+#endif
+
+ for ( mtype = 0 ; mtype < 8 ; mtype++ ) {
+ normal_func func = _mesa_normal_tab[norm_types[mtype]];
+ long *cycles = &benchmark_tab[mtype];
+
+ if ( test_norm_function( func, mtype, cycles ) == 0 ) {
+ char buf[100];
+ _mesa_sprintf( buf, "_mesa_normal_tab[0][%s] failed test (%s)",
+ norm_strings[mtype], description );
+ _mesa_problem( NULL, buf );
+ }
+
+#ifdef RUN_DEBUG_BENCHMARK
+ if ( mesa_profile ) {
+ _mesa_printf( " %li\t", benchmark_tab[mtype] );
+ _mesa_printf( " | [%s]\n", norm_strings[mtype] );
+ }
+#endif
+ }
+#ifdef RUN_DEBUG_BENCHMARK
+ if ( mesa_profile ) {
+ _mesa_printf( "\n" );
+ }
+#endif
+}
+
+
+#endif /* DEBUG_MATH */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 03:05:50 +0000