1/*
2 * Copyright (c) 1991, 1992, 1993 Silicon Graphics, Inc.
3 *
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.
11 *
12 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF
13 * ANY KIND,
14 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
15 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
16 *
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
22 * OF THIS SOFTWARE.
23 */
24
25#include <stdio.h>
26#include <string.h>
27#include <stdlib.h>
28#include "glut_wrap.h"
29
30
31#define CI_OFFSET_1 16
32#define CI_OFFSET_2 32
33
34
35GLenum doubleBuffer;
36GLint list;
37
38static void Init(void)
39{
40   fprintf(stderr, "GL_RENDERER   = %s\n", (char *) glGetString(GL_RENDERER));
41   fprintf(stderr, "GL_VERSION    = %s\n", (char *) glGetString(GL_VERSION));
42   fprintf(stderr, "GL_VENDOR     = %s\n", (char *) glGetString(GL_VENDOR));
43   fflush(stderr);
44
45   glClearColor(0.0, 0.0, 1.0, 0.0);
46
47   glPolygonMode(GL_FRONT, GL_LINE);
48   glPolygonMode(GL_BACK, GL_POINT);
49
50   list = glGenLists(1);
51   glNewList(list, GL_COMPILE);
52   glBegin(GL_TRIANGLES);
53   glEdgeFlag(1);
54/*    glColor3f(0,0,.7);  */
55   glVertex3f( 0.9, -0.9, -30.0);
56   glEdgeFlag(0);
57/*    glColor3f(.8,0,0);  */
58   glVertex3f( 0.9,  0.9, -30.0);
59   glEdgeFlag(1);
60/*    glColor3f(0,.9,0);  */
61   glVertex3f(-0.9,  0.0, -30.0);
62   glEnd();
63   glEndList();
64}
65
66static void Reshape(int width, int height)
67{
68
69    glViewport(0, 0, (GLint)width, (GLint)height);
70
71    glMatrixMode(GL_PROJECTION);
72    glLoadIdentity();
73    glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
74    glMatrixMode(GL_MODELVIEW);
75}
76
77static void Key(unsigned char key, int x, int y)
78{
79
80    switch (key) {
81      case 27:
82	exit(1);
83      default:
84	break;
85    }
86
87    glutPostRedisplay();
88}
89
90
91
92
93static void Draw(void)
94{
95   glClear(GL_COLOR_BUFFER_BIT);
96
97   glPushMatrix();
98   glColor3f(0,.9,0);
99   glCallList(list);
100
101   glRotatef(45,0,0,1);
102   glColor3f(1,0,1);
103   glCallList(list);
104   glPopMatrix();
105
106   glFlush();
107
108   if (doubleBuffer) {
109      glutSwapBuffers();
110   }
111}
112
113static GLenum Args(int argc, char **argv)
114{
115    GLint i;
116
117    doubleBuffer = GL_FALSE;
118
119    for (i = 1; i < argc; i++) {
120        if (strcmp(argv[i], "-sb") == 0) {
121	    doubleBuffer = GL_FALSE;
122	} else if (strcmp(argv[i], "-db") == 0) {
123	    doubleBuffer = GL_TRUE;
124	} else {
125	    fprintf(stderr, "%s (Bad option).\n", argv[i]);
126	    return GL_FALSE;
127	}
128    }
129    return GL_TRUE;
130}
131
132int main(int argc, char **argv)
133{
134    GLenum type;
135
136    glutInit(&argc, argv);
137
138    if (Args(argc, argv) == GL_FALSE) {
139	exit(1);
140    }
141
142    glutInitWindowPosition(0, 0); glutInitWindowSize( 250, 250);
143
144    type = GLUT_RGB | GLUT_ALPHA;
145    type |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE;
146    glutInitDisplayMode(type);
147
148    if (glutCreateWindow(*argv) == GL_FALSE) {
149	exit(1);
150    }
151
152    Init();
153
154    glutReshapeFunc(Reshape);
155    glutKeyboardFunc(Key);
156    glutDisplayFunc(Draw);
157    glutMainLoop();
158	return 0;
159}
160