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      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 }
     87