9 static void Init( void )
11 static const char *modulate2D
=
13 "MOV result.color, program.local[32]; \n"
18 if (!GLEW_ARB_fragment_program
) {
19 printf("Error: GL_ARB_fragment_program not supported!\n");
22 printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER
));
24 /* Setup the fragment program */
25 glGenProgramsARB(1, &modulateProg
);
26 glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB
, modulateProg
);
27 glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB
, GL_PROGRAM_FORMAT_ASCII_ARB
,
28 strlen(modulate2D
), (const GLubyte
*)modulate2D
);
30 printf("glGetError = 0x%x\n", (int) glGetError());
31 printf("glError(GL_PROGRAM_ERROR_STRING_ARB) = %s\n",
32 (char *) glGetString(GL_PROGRAM_ERROR_STRING_ARB
));
34 glEnable(GL_FRAGMENT_PROGRAM_ARB
);
36 glClearColor(.3, .3, .3, 0);
39 static void Reshape(int width
, int height
)
42 glViewport(0, 0, (GLint
)width
, (GLint
)height
);
44 glMatrixMode(GL_PROJECTION
);
46 glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
47 glMatrixMode(GL_MODELVIEW
);
50 static void Key(unsigned char key
, int x
, int y
)
63 static void Draw(void)
65 glClear(GL_COLOR_BUFFER_BIT
);
66 glProgramLocalParameter4fARB(GL_FRAGMENT_PROGRAM_ARB
, 32, 0.25, .5, 0.25, 1);
68 glBegin(GL_TRIANGLES
);
70 glVertex3f( 0.9, -0.9, -30.0);
72 glVertex3f( 0.9, 0.0, -30.0);
74 glVertex3f(-0.9, 0.0, -30.0);
77 glProgramLocalParameter4fARB(GL_FRAGMENT_PROGRAM_ARB
, 32, 0.25, 0, 0.25, 1);
79 glBegin(GL_TRIANGLES
);
81 glVertex3f( 0.9, 0.0, -30.0);
83 glVertex3f( 0.9, 0.9, -30.0);
85 glVertex3f(-0.9, 0.0, -30.0);
92 int main(int argc
, char **argv
)
96 glutInit(&argc
, argv
);
98 glutInitWindowPosition(0, 0); glutInitWindowSize( 250, 250);
100 type
= GLUT_RGB
| GLUT_SINGLE
;
101 glutInitDisplayMode(type
);
103 if (glutCreateWindow("First Tri") == GL_FALSE
) {
111 glutReshapeFunc(Reshape
);
112 glutKeyboardFunc(Key
);
113 glutDisplayFunc(Draw
);