1/* Test glGenProgramsNV(), glIsProgramNV(), glLoadProgramNV() */
2
3#include <stdio.h>
4#include <assert.h>
5#include <string.h>
6#include <stdlib.h>
7#include <math.h>
8#include <GL/glew.h>
9#include "glut_wrap.h"
10
11
12
13GLenum doubleBuffer;
14
15static void Init(void)
16{
17   GLint errnum;
18   GLuint prognum;
19
20   static const char *prog1 =
21      "!!ARBvp1.0\n"
22      "PARAM Emission = state.material.emission; \n"
23      "PARAM Ambient = state.material.ambient; \n"
24      "PARAM Diffuse = state.material.diffuse; \n"
25      "PARAM Specular = state.material.specular; \n"
26      "DP4  result.position.x, Ambient, vertex.position;\n"
27      "DP4  result.position.y, Diffuse, vertex.position;\n"
28      "DP4  result.position.z, Specular, vertex.position;\n"
29      "DP4  result.position.w, Emission, vertex.position;\n"
30      "MOV  result.color, vertex.color;\n"
31      "END\n";
32
33   const float Ambient[4] = { 0.0, 1.0, 0.0, 0.0 };
34   const float Diffuse[4] = { 1.0, 0.0, 0.0, 0.0 };
35   const float Specular[4] = { 0.0, 0.0, 1.0, 0.0 };
36   const float Emission[4] = { 0.0, 0.0, 0.0, 1.0 };
37   glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, Ambient);
38   glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, Diffuse);
39   glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, Specular);
40   glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, Emission);
41
42
43   glGenProgramsARB(1, &prognum);
44
45   glBindProgramARB(GL_VERTEX_PROGRAM_ARB, prognum);
46   glProgramStringARB(GL_VERTEX_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
47		      strlen(prog1), (const GLubyte *) prog1);
48
49   assert(glIsProgramARB(prognum));
50   errnum = glGetError();
51   printf("glGetError = %d\n", errnum);
52   if (errnum != GL_NO_ERROR)
53   {
54      GLint errorpos;
55
56      glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errorpos);
57      printf("errorpos: %d\n", errorpos);
58      printf("%s\n", (char *)glGetString(GL_PROGRAM_ERROR_STRING_ARB));
59   }
60
61   glEnable(GL_VERTEX_PROGRAM_NV);
62
63}
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
90static void Draw(void)
91{
92   glClear(GL_COLOR_BUFFER_BIT);
93
94   glBegin(GL_TRIANGLES);
95   glColor3f(0,0,.7);
96   glVertex3f( 0.9, -0.9, -0.0);
97   glColor3f(.8,0,0);
98   glVertex3f( 0.9,  0.9, -0.0);
99   glColor3f(0,.9,0);
100   glVertex3f(-0.9,  0.0, -0.0);
101   glEnd();
102
103   glFlush();
104
105   if (doubleBuffer) {
106      glutSwapBuffers();
107   }
108}
109
110static GLenum Args(int argc, char **argv)
111{
112    GLint i;
113
114    doubleBuffer = GL_FALSE;
115
116    for (i = 1; i < argc; i++) {
117        if (strcmp(argv[i], "-sb") == 0) {
118	    doubleBuffer = GL_FALSE;
119	} else if (strcmp(argv[i], "-db") == 0) {
120	    doubleBuffer = GL_TRUE;
121	} else {
122	    fprintf(stderr, "%s (Bad option).\n", argv[i]);
123	    return GL_FALSE;
124	}
125    }
126    return GL_TRUE;
127}
128
129int main(int argc, char **argv)
130{
131    GLenum type;
132
133    glutInit(&argc, argv);
134
135    if (Args(argc, argv) == GL_FALSE) {
136	exit(1);
137    }
138
139    glutInitWindowPosition(0, 0); glutInitWindowSize( 250, 250);
140
141    type = GLUT_RGB | GLUT_ALPHA;
142    type |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE;
143    glutInitDisplayMode(type);
144
145    if (glutCreateWindow(*argv) == GL_FALSE) {
146	exit(1);
147    }
148
149    glewInit();
150
151    Init();
152
153    glutReshapeFunc(Reshape);
154    glutKeyboardFunc(Key);
155    glutDisplayFunc(Draw);
156    glutMainLoop();
157    return 0;
158}
159