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 * Normal 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 __NORM_ARGS_H__ 35 #define __NORM_ARGS_H__ 36 37 /* Offsets for normal_func arguments 38 * 39 * typedef void (*normal_func)( const GLmatrix *mat, 40 * GLfloat scale, 41 * const GLvector4f *in, 42 * const GLfloat lengths[], 43 * GLvector4f *dest ); 44 */ 45 #define OFFSET_MAT 4 46 #define OFFSET_SCALE 8 47 #define OFFSET_IN 12 48 #define OFFSET_LENGTHS 16 49 #define OFFSET_DEST 20 50 51 #define ARG_MAT REGOFF(FRAME_OFFSET+OFFSET_MAT, ESP) 52 #define ARG_SCALE REGOFF(FRAME_OFFSET+OFFSET_SCALE, ESP) 53 #define ARG_IN REGOFF(FRAME_OFFSET+OFFSET_IN, ESP) 54 #define ARG_LENGTHS REGOFF(FRAME_OFFSET+OFFSET_LENGTHS, ESP) 55 #define ARG_DEST REGOFF(FRAME_OFFSET+OFFSET_DEST, ESP) 56 57 #endif 58