src/mesa/math/m_xform.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  5.1
   4  *
   5  * Copyright (C) 1999-2003  Brian Paul   All Rights Reserved.
   6  *
   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:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  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.
  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 "main/glheader.h"
  37 #include "main/macros.h"
  38
  39 #include "m_eval.h"
  40 #include "m_matrix.h"
  41 #include "m_translate.h"
  42 #include "m_xform.h"
  43
  44
  45 #ifdef DEBUG_MATH
  46 #include "m_debug.h"
  47 #endif
  48
  49 #ifdef USE_X86_ASM
  50 #include "x86/common_x86_asm.h"
  51 #endif
  52
  53 #ifdef USE_X86_64_ASM
  54 #include "x86-64/x86-64.h"
  55 #endif
  56
  57 #ifdef USE_SPARC_ASM
  58 #include "sparc/sparc.h"
  59 #endif
  60
  61 #ifdef USE_PPC_ASM
  62 #include "ppc/common_ppc_features.h"
  63 #endif
  64
  65 clip_func _mesa_clip_tab[5];
  66 clip_func _mesa_clip_np_tab[5];
  67 dotprod_func _mesa_dotprod_tab[5];
  68 vec_copy_func _mesa_copy_tab[0x10];
  69 normal_func _mesa_normal_tab[0xf];
  70 transform_func *_mesa_transform_tab[5];
  71
  72
  73 /* Raw data format used for:
  74  *    - Object-to-eye transform prior to culling, although this too
  75  *      could be culled under some circumstances.
  76  *    - Eye-to-clip transform (via the function above).
  77  *    - Cliptesting
  78  *    - And everything else too, if culling happens to be disabled.
  79  *
  80  * GH: It's used for everything now, as clipping/culling is done
  81  *     elsewhere (most often by the driver itself).
  82  */
  83 #define TAG(x) x
  84 #define TAG2(x,y) x##y
  85 #define STRIDE_LOOP for ( i = 0 ; i < count ; i++, STRIDE_F(from, stride) )
  86 #define LOOP for ( i = 0 ; i < n ; i++ )
  87 #define ARGS
  88 #include "m_xform_tmp.h"
  89 #include "m_clip_tmp.h"
  90 #include "m_norm_tmp.h"
  91 #include "m_dotprod_tmp.h"
  92 #include "m_copy_tmp.h"
  93 #undef TAG
  94 #undef TAG2
  95 #undef LOOP
  96 #undef ARGS
  97
  98
  99 /*
 100  * This is called only once.  It initializes several tables with pointers
 101  * to optimized transformation functions.  This is where we can test for
 102  * AMD 3Dnow! capability, Intel SSE, etc. and hook in the right code.
 103  */
 104 void
 105 _math_init_transformation( void )
 106 {
 107    init_c_transformations();
 108    init_c_norm_transform();
 109    init_c_cliptest();
 110    init_copy0();
 111    init_dotprod();
 112
 113 #ifdef DEBUG_MATH
 114    _math_test_all_transform_functions( "default" );
 115    _math_test_all_normal_transform_functions( "default" );
 116    _math_test_all_cliptest_functions( "default" );
 117 #endif
 118
 119 #ifdef USE_X86_ASM
 120    _mesa_init_all_x86_transform_asm();
 121 #elif defined( USE_SPARC_ASM )
 122    _mesa_init_all_sparc_transform_asm();
 123 #elif defined( USE_PPC_ASM )
 124    _mesa_init_all_ppc_transform_asm();
 125 #elif defined( USE_X86_64_ASM )
 126    _mesa_init_all_x86_64_transform_asm();
 127 #endif
 128 }