1 
2 /*
3  * Mesa 3-D graphics library
4  *
5  * Copyright (C) 1999-2002  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  * Authors:
26  *    Keith Whitwell <keithw@vmware.com>
27  */
28 
29 typedef struct {
30    GLfloat x, y, z, w;
31 } TAG(_coord_t);
32 
33 #ifdef COLOR_IS_RGBA
34 typedef struct {
35 #if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN
36    GLubyte alpha, blue, green, red;
37 #else
38    GLubyte red, green, blue, alpha;
39 #endif
40 } TAG(_color_t);
41 #else
42 typedef struct {
43 #if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN
44    GLubyte alpha, red, green, blue;
45 #else
46    GLubyte blue, green, red, alpha;
47 #endif
48 } TAG(_color_t);
49 #endif
50 
51 typedef union {
52    struct {
53       GLfloat x, y, z, w;
54       TAG(_color_t) color;
55       TAG(_color_t) specular;
56       GLfloat u0, v0;
57       GLfloat u1, v1;
58       GLfloat u2, v2;
59       GLfloat u3, v3;
60    } v;
61    struct {
62       GLfloat x, y, z, w;
63       TAG(_color_t) color;
64       TAG(_color_t) specular;
65       GLfloat u0, v0, q0;
66       GLfloat u1, v1, q1;
67       GLfloat u2, v2, q2;
68       GLfloat u3, v3, q3;
69    } pv;
70    struct {
71       GLfloat x, y, z;
72       TAG(_color_t) color;
73    } tv;
74    GLfloat f[24];
75    GLuint  ui[24];
76    GLubyte ub4[24][4];
77 } TAG(Vertex), *TAG(VertexPtr);
78 
79