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  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
  107.