Move the transform and lighting code to two new directories

	math:  Provides basic matrix and vector functionality that
               might be useful to multiple software t&l
	       implementations, and is used by core mesa to
	       manage the Model, Project, etc matrices.

	tnl:   The real transform & lighting code from core mesa,
	       including everything from glVertex3f through vertex
	       buffer handling, transformation, clipping, lighting
	       and handoff to a driver for rasterization.

The interfaces of these can be further tightened up, but the basic
splitting up of state and code move is done.

1 files changed, 930 insertions, 0 deletions

diff --git a/src/mesa/math/m_debug_xform.c b/src/mesa/math/m_debug_xform.c
new file mode 100644
index 0000000000..5041fc4ee0
--- /dev/null
+++ b/src/mesa/math/m_debug_xform.c
@@ -0,0 +1,930 @@
+/* $Id: m_debug_xform.c,v 1.1 2000/11/16 21:05:41 keithw Exp $ */
+
+/*
+ * Mesa 3-D graphics library
+ * Version:  3.5
+ *
+ * Copyright (C) 1999-2000  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 "mem.h"
+
+#include "m_debug_xform.h"
+#include "m_matrix.h"
+#include "m_xform.h"
+
+
+#ifdef DEBUG  /* This code only used for debugging */
+
+
+/* Comment this out to deactivate the cycle counter.
+ * NOTE: it works only on CPUs which know the 'rdtsc' command (586 or higher)
+ * (hope, you don't try to debug Mesa on a 386 ;)
+ */
+#if defined(__GNUC__) && defined(__i386__) && defined(USE_X86_ASM)
+#define  RUN_XFORM_BENCHMARK
+#endif
+
+#define TEST_COUNT		128	/* size of the tested vector array   */
+
+#define REQUIRED_PRECISION	10	/* allow 4 bits to miss              */
+#define MAX_PRECISION		24	/* max. precision possible           */
+
+
+#ifdef  RUN_XFORM_BENCHMARK
+/* Overhead of profiling counter in cycles.  Automatically adjusted to
+ * your machine at run time - counter initialization should give very
+ * consistent results.
+ */
+static int need_counter = 1;
+static long counter_overhead = 0;
+
+/* Modify the the number of tests if you like.
+ * We take the minimum of all results, because every error should be
+ * positive (time used by other processes, task switches etc).
+ * It is assumed that all calculations are done in the cache.
+ */
+
+#if 1 /* PPro, PII, PIII version */
+
+/* Profiling on the P6 architecture requires a little more work, due to
+ * the internal out-of-order execution.  We must perform a serializing
+ * 'cpuid' instruction before and after the 'rdtsc' instructions to make
+ * sure no other uops are executed when we sample the timestamp counter.
+ */
+#define  INIT_COUNTER()							\
+   do {									\
+      int cycle_i;							\
+      counter_overhead = LONG_MAX;					\
+      for ( cycle_i = 0 ; cycle_i < 4 ; cycle_i++ ) {			\
+	 long cycle_tmp1 = 0, cycle_tmp2 = 0;				\
+	 __asm__ ( "push %%ebx       \n"				\
+		   "xor %%eax, %%eax \n"				\
+		   "cpuid            \n"				\
+		   "rdtsc            \n"				\
+		   "mov %%eax, %0    \n"				\
+		   "xor %%eax, %%eax \n"				\
+		   "cpuid            \n"				\
+		   "pop %%ebx        \n"				\
+		   "push %%ebx       \n"				\
+		   "xor %%eax, %%eax \n"				\
+		   "cpuid            \n"				\
+		   "rdtsc            \n"				\
+		   "mov %%eax, %1    \n"				\
+		   "xor %%eax, %%eax \n"				\
+		   "cpuid            \n"				\
+		   "pop %%ebx        \n"				\
+		   : "=m" (cycle_tmp1), "=m" (cycle_tmp2)		\
+		   : : "eax", "ecx", "edx" );				\
+	 if ( counter_overhead > (cycle_tmp2 - cycle_tmp1) ) {		\
+	    counter_overhead = cycle_tmp2 - cycle_tmp1;			\
+	 }								\
+      }									\
+   } while (0)
+
+#define  BEGIN_RACE(x)							\
+   x = LONG_MAX;							\
+   for ( cycle_i = 0 ; cycle_i < 10 ; cycle_i++ ) {			\
+      long cycle_tmp1 = 0, cycle_tmp2 = 0;				\
+      __asm__ ( "push %%ebx       \n"					\
+		"xor %%eax, %%eax \n"					\
+		"cpuid            \n"					\
+		"rdtsc            \n"					\
+		"mov %%eax, %0    \n"					\
+		"xor %%eax, %%eax \n"					\
+		"cpuid            \n"					\
+		"pop %%ebx        \n"					\
+		: "=m" (cycle_tmp1)					\
+		: : "eax", "ecx", "edx" );
+
+#define END_RACE(x)							\
+      __asm__ ( "push %%ebx       \n"					\
+		"xor %%eax, %%eax \n"					\
+		"cpuid            \n"					\
+		"rdtsc            \n"					\
+		"mov %%eax, %0    \n"					\
+		"xor %%eax, %%eax \n"					\
+		"cpuid            \n"					\
+		"pop %%ebx        \n"					\
+		: "=m" (cycle_tmp2)					\
+		: : "eax", "ecx", "edx" );				\
+      if ( x > (cycle_tmp2 - cycle_tmp1) ) {				\
+	 x = cycle_tmp2 - cycle_tmp1;					\
+      }									\
+   }									\
+   x -= counter_overhead;
+
+#else /* PPlain, PMMX version */
+
+/* To ensure accurate results, we stall the pipelines with the
+ * non-pairable 'cdq' instruction.  This ensures all the code being
+ * profiled is complete when the 'rdtsc' instruction executes.
+ */
+#define  INIT_COUNTER(x)						\
+   do {									\
+      int cycle_i;							\
+      x = LONG_MAX;							\
+      for ( cycle_i = 0 ; cycle_i < 32 ; cycle_i++ ) {			\
+	 long cycle_tmp1, cycle_tmp2, dummy;				\
+	 __asm__ ( "mov %%eax, %0" : "=a" (cycle_tmp1) );		\
+	 __asm__ ( "mov %%eax, %0" : "=a" (cycle_tmp2) );		\
+	 __asm__ ( "cdq" );						\
+	 __asm__ ( "cdq" );						\
+	 __asm__ ( "rdtsc" : "=a" (cycle_tmp1), "=d" (dummy) );		\
+	 __asm__ ( "cdq" );						\
+	 __asm__ ( "cdq" );						\
+	 __asm__ ( "rdtsc" : "=a" (cycle_tmp2), "=d" (dummy) );		\
+	 if ( x > (cycle_tmp2 - cycle_tmp1) )				\
+	    x = cycle_tmp2 - cycle_tmp1;				\
+      }									\
+   } while (0)
+
+#define  BEGIN_RACE(x)							\
+   x = LONG_MAX;							\
+   for ( cycle_i = 0 ; cycle_i < 16 ; cycle_i++ ) {			\
+      long cycle_tmp1, cycle_tmp2, dummy;				\
+      __asm__ ( "mov %%eax, %0" : "=a" (cycle_tmp1) );			\
+      __asm__ ( "mov %%eax, %0" : "=a" (cycle_tmp2) );			\
+      __asm__ ( "cdq" );						\
+      __asm__ ( "cdq" );						\
+      __asm__ ( "rdtsc" : "=a" (cycle_tmp1), "=d" (dummy) );
+
+
+#define END_RACE(x)							\
+      __asm__ ( "cdq" );						\
+      __asm__ ( "cdq" );						\
+      __asm__ ( "rdtsc" : "=a" (cycle_tmp2), "=d" (dummy) );		\
+      if ( x > (cycle_tmp2 - cycle_tmp1) )				\
+	 x = cycle_tmp2 - cycle_tmp1;					\
+   }									\
+   x -= counter_overhead;
+
+#endif
+
+#else
+
+#define BEGIN_RACE(x)
+#define END_RACE(x)
+
+#endif
+
+
+static char *mesa_profile = NULL;
+
+
+enum { NIL=0, ONE=1, NEG=-1, VAR=2 };
+
+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"
+};
+
+
+
+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"
+};
+
+
+
+/* ================================================================
+ * Helper functions
+ */
+
+static GLfloat rnd( void )
+{
+   GLfloat f = (GLfloat)rand() / (GLfloat)RAND_MAX;
+   GLfloat gran = (GLfloat)(1 << 13);
+
+   f = (GLfloat)(GLint)(f * gran) / gran;
+
+   return f * 2.0 - 1.0;
+}
+
+static int significand_match( GLfloat a, GLfloat b )
+{
+   GLfloat d = a - b;
+   int a_ex, b_ex, d_ex;
+
+   if ( d == 0.0F ) {
+      return MAX_PRECISION;   /* Exact match */
+   }
+
+   if ( a == 0.0F || b == 0.0F ) {
+      /* It would probably be better to check if the
+       * non-zero number is denormalized and return
+       * the index of the highest set bit here.
+       */
+      return 0;
+   }
+
+   frexp( a, &a_ex );
+   frexp( b, &b_ex );
+   frexp( d, &d_ex );
+
+   if ( a_ex < b_ex )
+      return a_ex - d_ex;
+   else
+      return b_ex - d_ex;
+}
+
+
+
+/* ================================================================
+ * Reference transformations
+ */
+
+static void ref_transform( GLvector4f *dst,
+                           const GLmatrix *mat,
+                           const GLvector4f *src,
+                           const GLubyte *clipmask,
+                           const GLubyte flag )
+{
+   int i;
+   GLfloat *s = (GLfloat *)src->start;
+   GLfloat (*d)[4] = (GLfloat (*)[4])dst->start;
+   const GLfloat *m = mat->m;
+
+   (void) clipmask;
+   (void) flag;
+
+   for ( i = 0 ; i < src->count ; i++ ) {
+      GLfloat x = s[0], y = s[1], z = s[2], w = s[3];
+      d[i][0] = m[0]*x + m[4]*y + m[ 8]*z + m[12]*w;
+      d[i][1] = m[1]*x + m[5]*y + m[ 9]*z + m[13]*w;
+      d[i][2] = m[2]*x + m[6]*y + m[10]*z + m[14]*w;
+      d[i][3] = m[3]*x + m[7]*y + m[11]*z + m[15]*w;
+      s = (GLfloat *)((char *)s + src->stride);
+   }
+}
+
+static void ref_norm_transform_rescale( const GLmatrix *mat,
+					GLfloat scale,
+					const GLvector3f *in,
+					const GLfloat *lengths,
+					const GLubyte mask[],
+					GLvector3f *dest )
+{
+   int i;
+   const GLfloat *s = in->start;
+   const GLfloat *m = mat->inv;
+   GLfloat (*out)[3] = (GLfloat (*)[3])dest->start;
+
+   (void) mask;
+   (void) lengths;
+
+   for ( i = 0 ; i < in->count ; i++ ) {
+      GLfloat x = s[0], y = s[1], z = s[2] ;
+      GLfloat tx = m[0]*x + m[1]*y + m[ 2]*z ;
+      GLfloat ty = m[4]*x + m[5]*y + m[ 6]*z ;
+      GLfloat tz = m[8]*x + m[9]*y + m[10]*z ;
+
+      out[i][0] = tx * scale;
+      out[i][1] = ty * scale;
+      out[i][2] = tz * scale;
+
+      s = (GLfloat *)((char *)s + in->stride);
+   }
+}
+
+static void ref_norm_transform_normalize( const GLmatrix *mat,
+					  GLfloat scale,
+					  const GLvector3f *in,
+					  const GLfloat *lengths,
+					  const GLubyte mask[],
+					  GLvector3f *dest )
+{
+   int i;
+   const GLfloat *s = in->start;
+   const GLfloat *m = mat->inv;
+   GLfloat (*out)[3] = (GLfloat (*)[3])dest->start;
+
+   (void) mask;
+
+   for ( i = 0 ; i < in->count ; i++ ) {
+      GLfloat x = s[0], y = s[1], z = s[2] ;
+      GLfloat tx = m[0]*x + m[1]*y + m[ 2]*z ;
+      GLfloat ty = m[4]*x + m[5]*y + m[ 6]*z ;
+      GLfloat tz = m[8]*x + m[9]*y + m[10]*z ;
+
+      if ( !lengths ) {
+         GLfloat len = tx*tx + ty*ty + tz*tz;
+         if ( len > 1e-20 ) {
+	    /* Hmmm, don't know how we could test the precalculated
+	     * length case...
+	     */
+            scale = 1.0 / sqrt( len );
+            out[i][0] = tx * scale;
+            out[i][1] = ty * scale;
+            out[i][2] = tz * scale;
+         } else {
+            out[i][0] = out[i][1] = out[i][2] = 0;
+         }
+      } else {
+         scale = lengths[i];;
+         out[i][0] = tx * scale;
+         out[i][1] = ty * scale;
+         out[i][2] = tz * scale;
+      }
+
+      s = (GLfloat *)((char *)s + in->stride);
+   }
+}
+
+
+
+/* ================================================================
+ * Vertex transformation tests
+ */
+
+/* Ensure our arrays are correctly aligned.
+ */
+#if defined(__GNUC__)
+#define ALIGN16(x)		x __attribute__ ((aligned (16)))
+#else
+#define ALIGN16(x)		x
+#endif
+static GLfloat ALIGN16(s[TEST_COUNT][5]);
+static GLfloat ALIGN16(d[TEST_COUNT][4]);
+static GLfloat ALIGN16(r[TEST_COUNT][4]);
+
+static int test_transform_function( transform_func func, int psize, int mtype,
+                                    int masked, long *cycles )
+{
+   GLvector4f source[1], dest[1], ref[1];
+   GLmatrix mat[1];
+   GLfloat *m;
+   GLubyte mask[TEST_COUNT];
+   int i, j;
+#ifdef  RUN_XFORM_BENCHMARK
+   int cycle_i;                /* the counter for the benchmarks we run */
+#endif
+
+   (void) cycles;
+
+   if ( psize > 4 ) {
+      gl_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;
+
+   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;
+
+   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++) {
+      mask[i] = i % 2;				/* mask every 2nd element */
+      d[i][0] = s[i][0] = 0.0;
+      d[i][1] = s[i][1] = 0.0;
+      d[i][2] = s[i][2] = 0.0;
+      d[i][3] = s[i][3] = 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, NULL, 0 );
+
+   if ( mesa_profile ) {
+      if ( masked ) {
+         BEGIN_RACE( *cycles );
+         func( dest, mat->m, source, mask, 1 );
+         END_RACE( *cycles );
+      } else {
+         BEGIN_RACE( *cycles );
+         func( dest, mat->m, source, NULL, 0 );
+         END_RACE( *cycles );
+     }
+   }
+   else {
+      if ( masked ) {
+         func( dest, mat->m, source, mask, 1 );
+      } else {
+         func( dest, mat->m, source, NULL, 0 );
+      }
+   }
+
+   for ( i = 0 ; i < TEST_COUNT ; i++ ) {
+      if ( masked && (mask[i] & 1) )
+         continue;
+
+      for ( j = 0 ; j < 4 ; j++ ) {
+         if ( significand_match( d[i][j], r[i][j] ) < REQUIRED_PRECISION ) {
+            printf( "-----------------------------\n" );
+            printf( "(i = %i, j = %i)\n", i, j );
+            printf( "%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] ) );
+            printf( "%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] ) );
+            printf( "%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] ) );
+            printf( "%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 gl_test_all_transform_functions( char *description )
+{
+   int masked, psize, mtype;
+   long benchmark_tab[2][4][7];
+   static int first_time = 1;
+
+   if ( first_time ) {
+      first_time = 0;
+      mesa_profile = getenv( "MESA_PROFILE" );
+   }
+
+#ifdef RUN_XFORM_BENCHMARK
+   if ( mesa_profile ) {
+      if ( need_counter ) {
+	 need_counter = 0;
+	 INIT_COUNTER();
+	 printf( "counter overhead: %ld cycles\n\n", counter_overhead );
+      }
+      printf( "transform results after hooking in %s functions:\n", description );
+   }
+#endif
+
+   for ( masked = 0 ; masked <= 1 ; masked++ ) {
+      int cma = masked ? 1 : 0;
+      char *cmastring = masked ? "CULL_MASK_ACTIVE" : "0";
+
+#ifdef RUN_XFORM_BENCHMARK
+      if ( mesa_profile ) {
+         printf( "\n culling: %s \n", masked ? "CULL_MASK_ACTIVE" : "0" );
+         for ( psize = 1 ; psize <= 4 ; psize++ ) {
+            printf( " p%d\t", psize );
+         }
+         printf( "\n--------------------------------------------------------\n" );
+      }
+#endif
+
+      for ( mtype = 0 ; mtype < 7 ; mtype++ ) {
+         for ( psize = 1 ; psize <= 4 ; psize++ ) {
+            transform_func func = gl_transform_tab[cma][psize][mtypes[mtype]];
+            long *cycles = &(benchmark_tab[cma][psize-1][mtype]);
+
+            if ( test_transform_function( func, psize, mtype,
+					  masked, cycles ) == 0 ) {
+               char buf[100];
+               sprintf( buf, "gl_transform_tab[%s][%d][%s] failed test (%s)",
+                        cmastring, psize, mstrings[mtype], description );
+               gl_problem( NULL, buf );
+            }
+#ifdef RUN_XFORM_BENCHMARK
+            if ( mesa_profile )
+               printf( " %li\t", benchmark_tab[cma][psize-1][mtype] );
+#endif
+         }
+#ifdef RUN_XFORM_BENCHMARK
+         if ( mesa_profile )
+            printf( " | [%s]\n", mstrings[mtype] );
+#endif
+      }
+#ifdef RUN_XFORM_BENCHMARK
+      if ( mesa_profile )
+         printf( "\n" );
+#endif
+   }
+}
+
+
+
+/* ================================================================
+ * Normal transformation tests
+ */
+
+static int test_norm_function( normal_func func, int mtype,
+			       int masked, long *cycles )
+{
+   GLvector3f source[1], dest[1], dest2[1], ref[1], ref2[1];
+   GLmatrix mat[1];
+   GLfloat s[TEST_COUNT][5], d[TEST_COUNT][3], r[TEST_COUNT][3];
+   GLfloat d2[TEST_COUNT][3], r2[TEST_COUNT][3], length[TEST_COUNT];
+   GLfloat scale;
+   GLfloat *m;
+   GLubyte mask[TEST_COUNT];
+   int i, j;
+#ifdef  RUN_XFORM_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;
+
+   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;
+
+   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:
+            abort();
+         }
+      }
+   }
+
+   for ( i = 0 ; i < TEST_COUNT ; i++ ) {
+      mask[i] = i % 2;				/* mask every 2nd element */
+      d[i][0] = s[i][0] = d2[i][0] = 0.0;
+      d[i][1] = s[i][1] = d2[i][1] = 0.0;
+      d[i][2] = s[i][2] = d2[i][2] = 0.0;
+      for ( j = 0 ; j < 3 ; j++ )
+         s[i][j] = rnd();
+      length[i] = 1 / sqrt( s[i][0]*s[i][0] +
+			    s[i][1]*s[i][1] +
+			    s[i][2]*s[i][2] );
+   }
+
+   source->data = (GLfloat(*)[3])s;
+   source->start = (GLfloat *)s;
+   source->count = TEST_COUNT;
+   source->stride = sizeof(s[0]);
+   source->flags = 0;
+
+   dest->data = (GLfloat(*)[3])d;
+   dest->start = (GLfloat *)d;
+   dest->count = TEST_COUNT;
+   dest->stride = sizeof(float[3]);
+   dest->flags = 0;
+
+   dest2->data = (GLfloat(*)[3])d2;
+   dest2->start = (GLfloat *)d2;
+   dest2->count = TEST_COUNT;
+   dest2->stride = sizeof(float[3]);
+   dest2->flags = 0;
+
+   ref->data = (GLfloat(*)[3])r;
+   ref->start = (GLfloat *)r;
+   ref->count = TEST_COUNT;
+   ref->stride = sizeof(float[3]);
+   ref->flags = 0;
+
+   ref2->data = (GLfloat(*)[3])r2;
+   ref2->start = (GLfloat *)r2;
+   ref2->count = TEST_COUNT;
+   ref2->stride = sizeof(float[3]);
+   ref2->flags = 0;
+
+   if ( norm_normalize_types[mtype] == 0 ) {
+      ref_norm_transform_rescale( mat, scale, source, NULL, NULL, ref );
+   } else {
+      ref_norm_transform_normalize( mat, scale, source, NULL, NULL, ref );
+      ref_norm_transform_normalize( mat, scale, source, length, NULL, ref2 );
+   }
+
+   if ( mesa_profile ) {
+      if ( masked ) {
+         BEGIN_RACE( *cycles );
+         func( mat, scale, source, NULL, mask, dest );
+         END_RACE( *cycles );
+         func( mat, scale, source, length, mask, dest2 );
+      } else {
+         BEGIN_RACE( *cycles );
+         func( mat, scale, source, NULL, NULL, dest );
+         END_RACE( *cycles );
+         func( mat, scale, source, length, NULL, dest2 );
+      }
+   } else {
+      if ( masked ) {
+         func( mat, scale, source, NULL, mask, dest );
+         func( mat, scale, source, length, mask, dest2 );
+      } else {
+         func( mat, scale, source, NULL, NULL, dest );
+         func( mat, scale, source, length, NULL, dest2 );
+      }
+   }
+
+   for ( i = 0 ; i < TEST_COUNT ; i++ ) {
+      if ( masked && !(mask[i] & 1) )
+         continue;
+
+      for ( j = 0 ; j < 3 ; j++ ) {
+         if ( significand_match( d[i][j], r[i][j] ) < REQUIRED_PRECISION ) {
+            printf( "-----------------------------\n" );
+            printf( "(i = %i, j = %i)\n", i, j );
+            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] ) );
+            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] ) );
+            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 ) {
+               printf( "------------------- precalculated length case ------\n" );
+               printf( "(i = %i, j = %i)\n", i, j );
+               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] ) );
+               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] ) );
+               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 gl_test_all_normal_transform_functions( char *description )
+{
+   int masked;
+   int mtype;
+   long benchmark_tab[0xf][0x4];
+   static int first_time = 1;
+
+   if ( first_time ) {
+      first_time = 0;
+      mesa_profile = getenv( "MESA_PROFILE" );
+   }
+
+#ifdef RUN_XFORM_BENCHMARK
+   if ( mesa_profile ) {
+      if ( need_counter ) {
+	 need_counter = 0;
+	 INIT_COUNTER();
+	 printf( "counter overhead: %ld cycles\n\n", counter_overhead );
+      }
+      printf( "normal transform results after hooking in %s functions:\n",
+	      description );
+   }
+#endif
+
+   for ( masked = 0 ; masked <= 1 ; masked++ ) {
+      int cma = masked ? 1 : 0;
+      char *cmastring = masked ? "CULL_MASK_ACTIVE" : "0";
+
+#ifdef RUN_XFORM_BENCHMARK
+      if ( mesa_profile ) {
+         printf( "\n culling: %s \n", masked ? "CULL_MASK_ACTIVE" : "0" );
+         printf( "\n-------------------------------------------------------\n" );
+      }
+#endif
+
+      for ( mtype = 0 ; mtype < 8 ; mtype++ ) {
+         normal_func func = gl_normal_tab[norm_types[mtype]][cma];
+         long *cycles = &(benchmark_tab[mtype][cma]);
+
+         if ( test_norm_function( func, mtype, masked, cycles ) == 0 ) {
+            char buf[100];
+            sprintf( buf, "gl_normal_tab[%s][%s] failed test (%s)",
+                     cmastring, norm_strings[mtype], description );
+            gl_problem( NULL, buf );
+	 }
+
+#ifdef RUN_XFORM_BENCHMARK
+         if ( mesa_profile ) {
+            printf( " %li\t", benchmark_tab[mtype][cma] );
+            printf( " | [%s]\n", norm_strings[mtype] );
+         }
+      }
+      if ( mesa_profile )
+	 printf( "\n" );
+#else
+      }
+#endif
+   }
+#ifdef RUN_XFORM_BENCHMARK
+   if ( mesa_profile )
+      fflush( stdout );
+#endif
+}
+
+#endif /* DEBUG */