/* $Id: clip_args.h,v 1.2 2000/10/23 00:16:28 gareth Exp $ */ /* * Mesa 3-D graphics library * Version: 3.5 * * Copyright (C) 1999-2000 Brian Paul All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /* * Clip test function interface for assembly code. Simply define * FRAME_OFFSET to the number of bytes pushed onto the stack before * using the ARG_* argument macros. * * Gareth Hughes <gareth@valinux.com> */ #ifndef __CLIP_ARGS_H__ #define __CLIP_ARGS_H__ /* Offsets into GLvector4f */ #define V4F_DATA 0 #define V4F_START 4 #define V4F_COUNT 8 #define V4F_STRIDE 12 #define V4F_SIZE 16 #define V4F_FLAGS 20 /* GLvector4f flags */ #define VEC_SIZE_1 1 #define VEC_SIZE_2 3 #define VEC_SIZE_3 7 #define VEC_SIZE_4 15 /* * Offsets for clip_func arguments * * typedef GLvector4f *(*clip_func)( GLvector4f *vClip, * GLvector4f *vProj, * GLubyte clipMask[], * GLubyte *orMask, * GLubyte *andMask ); */ #define OFFSET_SOURCE 4 #define OFFSET_DEST 8 #define OFFSET_CLIP 12 #define OFFSET_OR 16 #define OFFSET_AND 20 #define ARG_SOURCE REGOFF(FRAME_OFFSET+OFFSET_SOURCE, ESP) #define ARG_DEST REGOFF(FRAME_OFFSET+OFFSET_DEST, ESP) #define ARG_CLIP REGOFF(FRAME_OFFSET+OFFSET_CLIP, ESP) #define ARG_OR REGOFF(FRAME_OFFSET+OFFSET_OR, ESP) #define ARG_AND REGOFF(FRAME_OFFSET+OFFSET_AND, ESP) #endif