1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
/* $Id: m_vector.h,v 1.2 2000/12/26 05:09:31 keithw 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.
*/
/*
* New (3.1) transformation code written by Keith Whitwell.
*/
#ifndef _M_VECTOR_H_
#define _M_VECTOR_H_
#include "glheader.h"
#define VEC_DIRTY_0 0x1
#define VEC_DIRTY_1 0x2
#define VEC_DIRTY_2 0x4
#define VEC_DIRTY_3 0x8
#define VEC_MALLOC 0x10 /* storage field points to self-allocated mem*/
#define VEC_NOT_WRITEABLE 0x40 /* writable elements to hold clipped data */
#define VEC_BAD_STRIDE 0x100 /* matches tnl's prefered stride */
#define VEC_SIZE_1 VEC_DIRTY_0
#define VEC_SIZE_2 (VEC_DIRTY_0|VEC_DIRTY_1)
#define VEC_SIZE_3 (VEC_DIRTY_0|VEC_DIRTY_1|VEC_DIRTY_2)
#define VEC_SIZE_4 (VEC_DIRTY_0|VEC_DIRTY_1|VEC_DIRTY_2|VEC_DIRTY_3)
/* Wrap all the information about vectors up in a struct. Has
* additional fields compared to the other vectors to help us track of
* different vertex sizes, and whether we need to clean columns out
* because they contain non-(0,0,0,1) values.
*
* The start field is used to reserve data for copied vertices at the
* end of gl_transform_vb, and avoids the need for a multiplication in
* the transformation routines.
*/
typedef struct {
GLfloat (*data)[4]; /* may be malloc'd or point to client data */
GLfloat *start; /* points somewhere inside of <data> */
GLuint count; /* size of the vector (in elements) */
GLuint stride; /* stride from one element to the next (in bytes) */
GLuint size; /* 2-4 for vertices and 1-4 for texcoords */
GLuint flags; /* which columns are dirty */
void *storage; /* self-allocated storage */
} GLvector4f;
extern void gl_vector4f_init( GLvector4f *v, GLuint flags,
GLfloat (*storage)[4] );
extern void gl_vector4f_alloc( GLvector4f *v, GLuint flags,
GLuint count, GLuint alignment );
extern void gl_vector4f_free( GLvector4f *v );
extern void gl_vector4f_print( GLvector4f *v, GLubyte *, GLboolean );
extern void gl_vector4f_clean_elem( GLvector4f *vec, GLuint nr, GLuint elt );
/* Could use a single vector type for normals and vertices, but
* this way avoids some casts.
*/
typedef struct {
GLfloat (*data)[3];
GLfloat *start;
GLuint count;
GLuint stride;
GLuint flags;
void *storage;
} GLvector3f;
extern void gl_vector3f_init( GLvector3f *v, GLuint flags, GLfloat (*)[3] );
extern void gl_vector3f_alloc( GLvector3f *v, GLuint flags, GLuint count,
GLuint alignment );
extern void gl_vector3f_free( GLvector3f *v );
extern void gl_vector3f_print( GLvector3f *v, GLubyte *, GLboolean );
typedef struct {
GLfloat *data;
GLfloat *start;
GLuint count;
GLuint stride;
GLuint flags;
void *storage;
} GLvector1f;
extern void gl_vector1f_free( GLvector1f *v );
extern void gl_vector1f_init( GLvector1f *v, GLuint flags, GLfloat * );
extern void gl_vector1f_alloc( GLvector1f *v, GLuint flags, GLuint count,
GLuint alignment );
/* For 4ub rgba values.
*/
typedef struct {
GLubyte (*data)[4];
GLubyte *start;
GLuint count;
GLuint stride;
GLuint flags;
void *storage;
} GLvector4ub;
extern void gl_vector4ub_init( GLvector4ub *v, GLuint flags,
GLubyte (*storage)[4] );
extern void gl_vector4ub_alloc( GLvector4ub *v, GLuint flags, GLuint count,
GLuint alignment );
extern void gl_vector4ub_free( GLvector4ub * );
/* For 1ub values, eg edgeflag.
*/
typedef struct {
GLubyte *data;
GLubyte *start;
GLuint count;
GLuint stride;
GLuint flags;
void *storage;
} GLvector1ub;
extern void gl_vector1ub_init( GLvector1ub *v, GLuint flags, GLubyte *storage);
extern void gl_vector1ub_alloc( GLvector1ub *v, GLuint flags, GLuint count,
GLuint alignment );
extern void gl_vector1ub_free( GLvector1ub * );
/* For, eg Index, Array element.
*/
typedef struct {
GLuint *data;
GLuint *start;
GLuint count;
GLuint stride;
GLuint flags;
void *storage;
} GLvector1ui;
extern void gl_vector1ui_init( GLvector1ui *v, GLuint flags, GLuint *storage );
extern void gl_vector1ui_alloc( GLvector1ui *v, GLuint flags, GLuint count,
GLuint alignment );
extern void gl_vector1ui_free( GLvector1ui * );
/*
* Given vector <v>, return a pointer (cast to <type *> to the <i>-th element.
*
* End up doing a lot of slow imuls if not careful.
*/
#define VEC_ELT( v, type, i ) \
( (type *) ( ((GLbyte *) ((v)->data)) + (i) * (v)->stride) )
#endif
|
