2 * Copyright (c) 1991, 1992, 1993 Silicon Graphics, Inc.
4 * Permission to use, copy, modify, distribute, and sell this software and
5 * its documentation for any purpose is hereby granted without fee, provided
6 * that (i) the above copyright notices and this permission notice appear in
7 * all copies of the software and related documentation, and (ii) the name of
8 * Silicon Graphics may not be used in any advertising or
9 * publicity relating to the software without the specific, prior written
10 * permission of Silicon Graphics.
12 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF
14 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
15 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
17 * IN NO EVENT SHALL SILICON GRAPHICS BE LIABLE FOR
18 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
19 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
20 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
21 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
31 #define CI_OFFSET_1 16
32 #define CI_OFFSET_2 32
37 static void Init(void)
39 fprintf(stderr
, "GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER
));
40 fprintf(stderr
, "GL_VERSION = %s\n", (char *) glGetString(GL_VERSION
));
41 fprintf(stderr
, "GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR
));
43 glEnable(GL_LIGHTING
);
46 glClearColor(0.0, 0.0, 1.0, 0.0);
49 static void Reshape(int width
, int height
)
52 glViewport(0, 0, (GLint
)width
, (GLint
)height
);
54 glMatrixMode(GL_PROJECTION
);
56 /* glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0); */
57 glMatrixMode(GL_MODELVIEW
);
60 static void Key(unsigned char key
, int x
, int y
)
73 static void Draw(void)
75 glClear(GL_COLOR_BUFFER_BIT
);
77 glPolygonMode(GL_FRONT
, GL_LINE
);
78 glPolygonMode(GL_BACK
, GL_LINE
);
80 glBegin(GL_TRIANGLES
);
82 glVertex3f( 0.9, -0.9, -0.0);
84 glVertex3f( 0.9, 0.9, -0.0);
86 glVertex3f(-0.9, 0.0, -0.0);
89 glPolygonMode(GL_FRONT
, GL_FILL
);
90 glPolygonMode(GL_BACK
, GL_FILL
);
92 glBegin(GL_TRIANGLES
);
94 glVertex3f( 0.8, -0.8, -0.0);
96 glVertex3f( 0.8, 0.8, -0.0);
98 glVertex3f(-0.8, 0.0, -0.0);
101 glPolygonMode(GL_FRONT
, GL_LINE
);
102 glPolygonMode(GL_BACK
, GL_LINE
);
104 glBegin(GL_TRIANGLES
);
106 glVertex3f( -0.9, 0.9, -0.0);
108 glVertex3f( -0.9, -0.9, -0.0);
110 glVertex3f( 0.9, 0.0, -0.0);
113 glPolygonMode(GL_FRONT
, GL_FILL
);
114 glPolygonMode(GL_BACK
, GL_FILL
);
116 glBegin(GL_TRIANGLES
);
118 glVertex3f( -0.8, 0.8, -0.0);
120 glVertex3f( -0.8, -0.8, -0.0);
122 glVertex3f( 0.8, 0.0, -0.0);
132 static GLenum
Args(int argc
, char **argv
)
136 doubleBuffer
= GL_FALSE
;
138 for (i
= 1; i
< argc
; i
++) {
139 if (strcmp(argv
[i
], "-sb") == 0) {
140 doubleBuffer
= GL_FALSE
;
141 } else if (strcmp(argv
[i
], "-db") == 0) {
142 doubleBuffer
= GL_TRUE
;
144 fprintf(stderr
, "%s (Bad option).\n", argv
[i
]);
151 int main(int argc
, char **argv
)
155 glutInit(&argc
, argv
);
157 if (Args(argc
, argv
) == GL_FALSE
) {
161 glutInitWindowPosition(0, 0); glutInitWindowSize( 250, 250);
163 type
= GLUT_RGB
| GLUT_ALPHA
;
164 type
|= (doubleBuffer
) ? GLUT_DOUBLE
: GLUT_SINGLE
;
165 glutInitDisplayMode(type
);
167 if (glutCreateWindow("First Tri") == GL_FALSE
) {
173 glutReshapeFunc(Reshape
);
174 glutKeyboardFunc(Key
);
175 glutDisplayFunc(Draw
);