src/mesa/math/m_xform.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 1999-2003  Brian Paul   All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 /*
  27  * Matrix/vertex/vector transformation stuff
  28  *
  29  *
  30  * NOTES:
  31  * 1. 4x4 transformation matrices are stored in memory in column major order.
  32  * 2. Points/vertices are to be thought of as column vectors.
  33  * 3. Transformation of a point p by a matrix M is: p' = M * p
  34  */
  35
  36 #include "c99_math.h"
  37 #include "main/glheader.h"
  38 #include "main/macros.h"
  39
  40 #include "m_eval.h"
  41 #include "m_matrix.h"
  42 #include "m_translate.h"
  43 #include "m_xform.h"
  44
  45
  46 #ifdef DEBUG_MATH
  47 #include "m_debug.h"
  48 #endif
  49
  50 #ifdef USE_X86_ASM
  51 #include "x86/common_x86_asm.h"
  52 #endif
  53
  54 #ifdef USE_X86_64_ASM
  55 #include "x86-64/x86-64.h"
  56 #endif
  57
  58 #ifdef USE_SPARC_ASM
  59 #include "sparc/sparc.h"
  60 #endif
  61
  62 clip_func _mesa_clip_tab[5];
  63 clip_func _mesa_clip_np_tab[5];
  64 dotprod_func _mesa_dotprod_tab[5];
  65 vec_copy_func _mesa_copy_tab[0x10];
  66 normal_func _mesa_normal_tab[0xf];
  67 transform_func *_mesa_transform_tab[5];
  68
  69
  70 /* Raw data format used for:
  71  *    - Object-to-eye transform prior to culling, although this too
  72  *      could be culled under some circumstances.
  73  *    - Eye-to-clip transform (via the function above).
  74  *    - Cliptesting
  75  *    - And everything else too, if culling happens to be disabled.
  76  *
  77  * GH: It's used for everything now, as clipping/culling is done
  78  *     elsewhere (most often by the driver itself).
  79  */
  80 #define TAG(x) x
  81 #define TAG2(x,y) x##y
  82 #define STRIDE_LOOP for ( i = 0 ; i < count ; i++, STRIDE_F(from, stride) )
  83 #define LOOP for ( i = 0 ; i < n ; i++ )
  84 #define ARGS
  85 #include "m_xform_tmp.h"
  86 #include "m_clip_tmp.h"
  87 #include "m_norm_tmp.h"
  88 #include "m_dotprod_tmp.h"
  89 #include "m_copy_tmp.h"
  90 #undef TAG
  91 #undef TAG2
  92 #undef LOOP
  93 #undef ARGS
  94
  95
  96 /*
  97  * This is called only once.  It initializes several tables with pointers
  98  * to optimized transformation functions.  This is where we can test for
  99  * AMD 3Dnow! capability, Intel SSE, etc. and hook in the right code.
 100  */
 101 void
 102 _math_init_transformation( void )
 103 {
 104    init_c_transformations();
 105    init_c_norm_transform();
 106    init_c_cliptest();
 107    init_copy0();
 108    init_dotprod();
 109
 110 #ifdef DEBUG_MATH
 111    _math_test_all_transform_functions( "default" );
 112    _math_test_all_normal_transform_functions( "default" );
 113    _math_test_all_cliptest_functions( "default" );
 114 #endif
 115
 116 #ifdef USE_X86_ASM
 117    _mesa_init_all_x86_transform_asm();
 118 #elif defined( USE_SPARC_ASM )
 119    _mesa_init_all_sparc_transform_asm();
 120 #elif defined( USE_X86_64_ASM )
 121    _mesa_init_all_x86_64_transform_asm();
 122 #endif
 123 }