workbench/libs/mesa/src/gallium/auxiliary/indices/u_indices.h

   1 /*
   2  * Copyright 2009 VMware, Inc.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * on the rights to use, copy, modify, merge, publish, distribute, sub
   9  * license, and/or sell copies of the Software, and to permit persons to whom
  10  * the Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  19  * TUNGSTEN GRAPHICS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  22  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #ifndef U_INDICES_H
  26 #define U_INDICES_H
  27
  28 #include "pipe/p_compiler.h"
  29
  30 #define PV_FIRST      0
  31 #define PV_LAST       1
  32 #define PV_COUNT      2
  33
  34 typedef void (*u_translate_func)( const void *in,
  35                                   unsigned nr,
  36                                   void *out );
  37
  38 typedef void (*u_generate_func)( unsigned nr,
  39                                  void *out );
  40
  41
  42 /* Return codes describe the translate/generate operation.  Caller may
  43  * be able to reuse translated indices under some circumstances.
  44  */
  45 #define U_TRANSLATE_ERROR  -1
  46 #define U_TRANSLATE_NORMAL  1
  47 #define U_TRANSLATE_MEMCPY  2
  48 #define U_GENERATE_LINEAR   3
  49 #define U_GENERATE_REUSABLE 4
  50 #define U_GENERATE_ONE_OFF  5
  51
  52
  53 void u_index_init( void );
  54
  55 int u_index_translator( unsigned hw_mask,
  56                         unsigned prim,
  57                         unsigned in_index_size,
  58                         unsigned nr,
  59                         unsigned in_pv,   /* API */
  60                         unsigned out_pv,  /* hardware */
  61                         unsigned *out_prim,
  62                         unsigned *out_index_size,
  63                         unsigned *out_nr,
  64                         u_translate_func *out_translate );
  65
  66 /* Note that even when generating it is necessary to know what the
  67  * API's PV is, as the indices generated will depend on whether it is
  68  * the same as hardware or not, and in the case of triangle strips,
  69  * whether it is first or last.
  70  */
  71 int u_index_generator( unsigned hw_mask,
  72                        unsigned prim,
  73                        unsigned start,
  74                        unsigned nr,
  75                        unsigned in_pv,   /* API */
  76                        unsigned out_pv,  /* hardware */
  77                        unsigned *out_prim,
  78                        unsigned *out_index_size,
  79                        unsigned *out_nr,
  80                        u_generate_func *out_generate );
  81
  82
  83 void u_unfilled_init( void );
  84
  85 int u_unfilled_translator( unsigned prim,
  86                            unsigned in_index_size,
  87                            unsigned nr,
  88                            unsigned unfilled_mode,
  89                            unsigned *out_prim,
  90                            unsigned *out_index_size,
  91                            unsigned *out_nr,
  92                            u_translate_func *out_translate );
  93
  94 int u_unfilled_generator( unsigned prim,
  95                           unsigned start,
  96                           unsigned nr,
  97                           unsigned unfilled_mode,
  98                           unsigned *out_prim,
  99                           unsigned *out_index_size,
 100                           unsigned *out_nr,
 101                           u_generate_func *out_generate );
 102
 103
 104
 105
 106 #endif