Subversion Repositories Kolibri OS

Rev

Blame | Last modification | View Log | RSS feed

  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.  * Clip test function interface for assembly code.  Simply define
  28.  * FRAME_OFFSET to the number of bytes pushed onto the stack before
  29.  * using the ARG_* argument macros.
  30.  *
  31.  * Gareth Hughes
  32.  */
  33.  
  34. #ifndef __CLIP_ARGS_H__
  35. #define __CLIP_ARGS_H__
  36.  
  37. /*
  38.  * Offsets for clip_func arguments
  39.  *
  40.  * typedef GLvector4f *(*clip_func)( GLvector4f *clip_vec,
  41.  *                                   GLvector4f *proj_vec,
  42.  *                                   GLubyte clipMask[],
  43.  *                                   GLubyte *orMask,
  44.  *                                   GLubyte *andMask );
  45.  */
  46.  
  47. #define OFFSET_SOURCE   4
  48. #define OFFSET_DEST     8
  49. #define OFFSET_CLIP     12
  50. #define OFFSET_OR       16
  51. #define OFFSET_AND      20
  52.  
  53. #define ARG_SOURCE      REGOFF(FRAME_OFFSET+OFFSET_SOURCE, ESP)
  54. #define ARG_DEST        REGOFF(FRAME_OFFSET+OFFSET_DEST, ESP)
  55. #define ARG_CLIP        REGOFF(FRAME_OFFSET+OFFSET_CLIP, ESP)
  56. #define ARG_OR          REGOFF(FRAME_OFFSET+OFFSET_OR, ESP)
  57. #define ARG_AND         REGOFF(FRAME_OFFSET+OFFSET_AND, ESP)
  58.  
  59. #endif
  60.