src/mesa/x86/xform_args.h

   1 /* $Id: xform_args.h,v 1.2 2000/10/23 00:16:29 gareth Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.5
   6  *
   7  * Copyright (C) 1999-2000  Brian Paul   All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  23  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27 /*
  28  * Transform function interface for assembly code.  Simply define
  29  * FRAME_OFFSET to the number of bytes pushed onto the stack before
  30  * using the ARG_* argument macros.
  31  *
  32  * Gareth Hughes <gareth@valinux.com>
  33  */
  34
  35 #ifndef __XFORM_ARGS_H__
  36 #define __XFORM_ARGS_H__
  37
  38 /* Offsets into GLvector4f
  39  */
  40 #define V4F_DATA        0
  41 #define V4F_START       4
  42 #define V4F_COUNT       8
  43 #define V4F_STRIDE      12
  44 #define V4F_SIZE        16
  45 #define V4F_FLAGS       20
  46
  47 /* GLvector4f flags
  48  */
  49 #define VEC_SIZE_1      1
  50 #define VEC_SIZE_2      3
  51 #define VEC_SIZE_3      7
  52 #define VEC_SIZE_4      15
  53
  54 /* Offsets for transform_func arguments
  55  *
  56  * typedef void (*transform_func)( GLvector4f *to_vec,
  57  *                                 const GLfloat m[16],
  58  *                                 const GLvector4f *from_vec,
  59  *                                 const GLubyte *clipmask,
  60  *                                 const GLubyte flag );
  61  */
  62 #define OFFSET_DEST     4
  63 #define OFFSET_MATRIX   8
  64 #define OFFSET_SOURCE   12
  65 #define OFFSET_CLIP     16
  66 #define OFFSET_FLAG     20
  67
  68 #define ARG_DEST        REGOFF(FRAME_OFFSET+OFFSET_DEST, ESP)
  69 #define ARG_MATRIX      REGOFF(FRAME_OFFSET+OFFSET_MATRIX, ESP)
  70 #define ARG_SOURCE      REGOFF(FRAME_OFFSET+OFFSET_SOURCE, ESP)
  71 #define ARG_CLIP        REGOFF(FRAME_OFFSET+OFFSET_CLIP, ESP)
  72 #define ARG_FLAG        REGOFF(FRAME_OFFSET+OFFSET_FLAG, ESP)
  73
  74 #endif