src/mesa/x86/xform_args.h

   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  * Transform 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 __XFORM_ARGS_H__
  35 #define __XFORM_ARGS_H__
  36
  37 /* Offsets for transform_func arguments
  38  *
  39  * typedef void (*transform_func)( GLvector4f *to_vec,
  40  *                                 const GLfloat m[16],
  41  *                                 const GLvector4f *from_vec );
  42  */
  43 #define OFFSET_DEST     4
  44 #define OFFSET_MATRIX   8
  45 #define OFFSET_SOURCE   12
  46
  47 #define ARG_DEST        REGOFF(FRAME_OFFSET+OFFSET_DEST, ESP)
  48 #define ARG_MATRIX      REGOFF(FRAME_OFFSET+OFFSET_MATRIX, ESP)
  49 #define ARG_SOURCE      REGOFF(FRAME_OFFSET+OFFSET_SOURCE, ESP)
  50
  51 #endif