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
28 #define GL_GLEXT_PROTOTYPES
32 #define CI_OFFSET_1 16
33 #define CI_OFFSET_2 32
38 static void Init(void)
42 static const char *prog1
=
44 "MOV result.color, fragment.texcoord[1];\n"
45 // "MOV result.color, fragment.color;\n"
49 fprintf(stderr
, "GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER
));
50 fprintf(stderr
, "GL_VERSION = %s\n", (char *) glGetString(GL_VERSION
));
51 fprintf(stderr
, "GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR
));
53 /* Setup the fragment program */
54 glGenProgramsARB(1, &prognum
);
55 glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB
, prognum
);
56 glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB
, GL_PROGRAM_FORMAT_ASCII_ARB
,
57 strlen(prog1
), (const GLubyte
*)prog1
);
60 printf("glGetError = 0x%x\n", errno
);
61 if (errno
!= GL_NO_ERROR
) {
64 glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB
, &errorpos
);
65 printf("errorpos: %d\n", errorpos
);
66 printf("glError(GL_PROGRAM_ERROR_STRING_ARB) = %s\n",
67 (char *) glGetString(GL_PROGRAM_ERROR_STRING_ARB
));
69 glEnable(GL_FRAGMENT_PROGRAM_ARB
);
71 glClearColor(0.0, 0.0, 1.0, 0.0);
74 static void Reshape(int width
, int height
)
77 glViewport(0, 0, (GLint
)width
, (GLint
)height
);
79 glMatrixMode(GL_PROJECTION
);
81 /* glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0); */
82 glMatrixMode(GL_MODELVIEW
);
85 static void Key(unsigned char key
, int x
, int y
)
98 static void Draw(void)
100 glClear(GL_COLOR_BUFFER_BIT
);
102 glBegin(GL_TRIANGLES
);
104 glTexCoord3f(0,0,.7);
105 glVertex3f( 0.9, -0.9, -0.0);
107 glTexCoord3f(.8,0,0);
108 glVertex3f( 0.9, 0.9, -0.0);
110 glTexCoord3f(0,.9,0);
111 glVertex3f(-0.9, 0.0, -0.0);
121 static GLenum
Args(int argc
, char **argv
)
125 doubleBuffer
= GL_FALSE
;
127 for (i
= 1; i
< argc
; i
++) {
128 if (strcmp(argv
[i
], "-sb") == 0) {
129 doubleBuffer
= GL_FALSE
;
130 } else if (strcmp(argv
[i
], "-db") == 0) {
131 doubleBuffer
= GL_TRUE
;
133 fprintf(stderr
, "%s (Bad option).\n", argv
[i
]);
140 int main(int argc
, char **argv
)
144 glutInit(&argc
, argv
);
146 if (Args(argc
, argv
) == GL_FALSE
) {
150 glutInitWindowPosition(0, 0); glutInitWindowSize( 250, 250);
152 type
= GLUT_RGB
| GLUT_ALPHA
;
153 type
|= (doubleBuffer
) ? GLUT_DOUBLE
: GLUT_SINGLE
;
154 glutInitDisplayMode(type
);
156 if (glutCreateWindow("First Tri") == GL_FALSE
) {
162 glutReshapeFunc(Reshape
);
163 glutKeyboardFunc(Key
);
164 glutDisplayFunc(Draw
);