src/mesa/math/m_copy_tmp.h

   1
   2 /*
   3  * Mesa 3-D graphics library
   4  *
   5  * Copyright (C) 1999-2001  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  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23  * OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26 /*
  27  * New (3.1) transformation code written by Keith Whitwell.
  28  */
  29
  30
  31 #define COPY_FUNC( BITS )                                               \
  32 static void TAG2(copy, BITS)( GLvector4f *to, const GLvector4f *f )     \
  33 {                                                                       \
  34    GLfloat (*t)[4] = (GLfloat (*)[4])to->start;                         \
  35    GLfloat *from = f->start;                                            \
  36    GLuint stride = f->stride;                                           \
  37    GLuint count = to->count;                                            \
  38    GLuint i;                                                            \
  39                                                                         \
  40    if (BITS)                                                            \
  41       STRIDE_LOOP {                                                     \
  42          if (BITS&1) t[i][0] = from[0];                                 \
  43          if (BITS&2) t[i][1] = from[1];                                 \
  44          if (BITS&4) t[i][2] = from[2];                                 \
  45          if (BITS&8) t[i][3] = from[3];                                 \
  46       }                                                                 \
  47 }
  48
  49 /* We got them all here:
  50  */
  51 COPY_FUNC( 0x0 )                /* noop */
  52 COPY_FUNC( 0x1 )
  53 COPY_FUNC( 0x2 )
  54 COPY_FUNC( 0x3 )
  55 COPY_FUNC( 0x4 )
  56 COPY_FUNC( 0x5 )
  57 COPY_FUNC( 0x6 )
  58 COPY_FUNC( 0x7 )
  59 COPY_FUNC( 0x8 )
  60 COPY_FUNC( 0x9 )
  61 COPY_FUNC( 0xa )
  62 COPY_FUNC( 0xb )
  63 COPY_FUNC( 0xc )
  64 COPY_FUNC( 0xd )
  65 COPY_FUNC( 0xe )
  66 COPY_FUNC( 0xf )
  67
  68 static void TAG2(init_copy, 0)( void )
  69 {
  70    _mesa_copy_tab[0x0] = TAG2(copy, 0x0);
  71    _mesa_copy_tab[0x1] = TAG2(copy, 0x1);
  72    _mesa_copy_tab[0x2] = TAG2(copy, 0x2);
  73    _mesa_copy_tab[0x3] = TAG2(copy, 0x3);
  74    _mesa_copy_tab[0x4] = TAG2(copy, 0x4);
  75    _mesa_copy_tab[0x5] = TAG2(copy, 0x5);
  76    _mesa_copy_tab[0x6] = TAG2(copy, 0x6);
  77    _mesa_copy_tab[0x7] = TAG2(copy, 0x7);
  78    _mesa_copy_tab[0x8] = TAG2(copy, 0x8);
  79    _mesa_copy_tab[0x9] = TAG2(copy, 0x9);
  80    _mesa_copy_tab[0xa] = TAG2(copy, 0xa);
  81    _mesa_copy_tab[0xb] = TAG2(copy, 0xb);
  82    _mesa_copy_tab[0xc] = TAG2(copy, 0xc);
  83    _mesa_copy_tab[0xd] = TAG2(copy, 0xd);
  84    _mesa_copy_tab[0xe] = TAG2(copy, 0xe);
  85    _mesa_copy_tab[0xf] = TAG2(copy, 0xf);
  86 }