reactos/dll/opengl/mesa/x86/clip_args.h

   1
   2 /*
   3  * Mesa 3-D graphics library
   4  * Version:  3.5
   5  *
   6  * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included
  16  * in all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  22  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  23  * CONNECTION WITH THE SOFTWARE OR THE USE OR 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