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
25 * Based on the trivial/quad-tex-2d program.
26 * Modified by Jakob Bornecrantz <jakob@tungstengraphics.com>
34 static GLenum Target
= GL_TEXTURE_2D
;
35 static GLenum Filter
= GL_NEAREST
;
40 static void Init(void)
45 fprintf(stderr
, "GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER
));
46 fprintf(stderr
, "GL_VERSION = %s\n", (char *) glGetString(GL_VERSION
));
47 fprintf(stderr
, "GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR
));
49 glClearColor(0.0, 0.0, 1.0, 0.0);
53 GLubyte tex2d
[SIZE
][SIZE
][4];
56 for (s
= 0; s
< SIZE
; s
++) {
57 for (t
= 0; t
< SIZE
; t
++) {
58 tex2d
[t
][s
][0] = 0xff;
59 tex2d
[t
][s
][1] = 0xff;
60 tex2d
[t
][s
][2] = 0xff;
61 tex2d
[t
][s
][3] = 0xff;
65 internalFormat
= GL_LUMINANCE8
;
66 sourceFormat
= GL_RGBA
;
79 glTexEnvf(GL_TEXTURE_ENV
, GL_TEXTURE_ENV_MODE
, GL_REPLACE
);
80 glTexParameterf(Target
, GL_TEXTURE_WRAP_R
, GL_REPEAT
);
81 glTexParameterf(Target
, GL_TEXTURE_MIN_FILTER
, Filter
);
82 glTexParameterf(Target
, GL_TEXTURE_MAG_FILTER
, Filter
);
86 static void Reshape(int width
, int height
)
88 glViewport(0, 0, (GLint
)width
, (GLint
)height
);
89 glMatrixMode(GL_PROJECTION
);
92 glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
94 glFrustum(-1, 1, -1, 1, 10, 20);
96 glMatrixMode(GL_MODELVIEW
);
98 glTranslatef(0, 0, -15);
101 static void Key(unsigned char key
, int x
, int y
)
111 glutDestroyWindow(win
);
119 static void Draw(void)
121 glClear(GL_COLOR_BUFFER_BIT
);
124 glRotatef(Rot
, 0, 1, 0);
128 glVertex3f( 0.9, -0.9, 0.0);
130 glVertex3f( 0.9, 0.9, 0.0);
132 glVertex3f(-0.9, 0.9, 0.0);
134 glVertex3f(-0.9, -0.9, 0.0);
146 static GLenum
Args(int argc
, char **argv
)
150 doubleBuffer
= GL_FALSE
;
152 for (i
= 1; i
< argc
; i
++) {
153 if (strcmp(argv
[i
], "-sb") == 0) {
154 doubleBuffer
= GL_FALSE
;
155 } else if (strcmp(argv
[i
], "-db") == 0) {
156 doubleBuffer
= GL_TRUE
;
158 fprintf(stderr
, "%s (Bad option).\n", argv
[i
]);
165 int main(int argc
, char **argv
)
169 glutInit(&argc
, argv
);
171 if (Args(argc
, argv
) == GL_FALSE
) {
175 glutInitWindowPosition(0, 0);
176 glutInitWindowSize(250, 250);
179 type
|= (doubleBuffer
) ? GLUT_DOUBLE
: GLUT_SINGLE
;
180 glutInitDisplayMode(type
);
182 win
= glutCreateWindow("Tex test");
189 glutReshapeFunc(Reshape
);
190 glutKeyboardFunc(Key
);
191 glutDisplayFunc(Draw
);