vp-clip.c revision 32001f49 
1/* Test glGenProgramsNV(), glIsProgramNV(), glLoadProgramNV() */
2
3#include <assert.h>
4#include <string.h>
5#include <stdio.h>
6#include <stdlib.h>
7#include <math.h>
8#include <GL/glew.h>
9#include "glut_wrap.h"
10
11static void Init( void )
12{
13   GLint errno;
14   GLuint prognum;
15
16   static const char *prog1 =
17      "!!ARBvp1.0\n"
18      "MOV  result.color, vertex.color;\n"
19      "MOV  result.position, vertex.position;\n"
20      "END\n";
21
22   glGenProgramsARB(1, &prognum);
23
24   glBindProgramARB(GL_VERTEX_PROGRAM_ARB, prognum);
25   glProgramStringARB(GL_VERTEX_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
26		      strlen(prog1), (const GLubyte *) prog1);
27
28   assert(glIsProgramARB(prognum));
29   errno = glGetError();
30   printf("glGetError = %d\n", errno);
31   if (errno != GL_NO_ERROR)
32   {
33      GLint errorpos;
34
35      glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errorpos);
36      printf("errorpos: %d\n", errorpos);
37      printf("%s\n", (char *)glGetString(GL_PROGRAM_ERROR_STRING_ARB));
38   }
39}
40
41static void Display( void )
42{
43   glClearColor(0.3, 0.3, 0.3, 1);
44   glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
45
46   glEnable(GL_VERTEX_PROGRAM_NV);
47
48   glBegin(GL_TRIANGLES);
49   glColor3f(0,0,1);
50   glVertex3f( 2.0, -2.0, 0.0);
51   glColor3f(0,1,0);
52   glVertex3f( 2.0,  2.0, 0.0);
53   glColor3f(1,0,0);
54   glVertex3f(-2.0,  0.0, 0.0);
55   glEnd();
56
57
58   glFlush();
59}
60
61
62static void Reshape( int width, int height )
63{
64   glViewport( 0, 0, width, height );
65   glMatrixMode( GL_PROJECTION );
66   glLoadIdentity();
67   glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
68   glMatrixMode( GL_MODELVIEW );
69   glLoadIdentity();
70   /*glTranslatef( 0.0, 0.0, -15.0 );*/
71}
72
73
74static void Key( unsigned char key, int x, int y )
75{
76   (void) x;
77   (void) y;
78   switch (key) {
79      case 27:
80         exit(0);
81         break;
82   }
83   glutPostRedisplay();
84}
85
86
87
88
89int main( int argc, char *argv[] )
90{
91   glutInit( &argc, argv );
92   glutInitWindowPosition( 0, 0 );
93   glutInitWindowSize( 250, 250 );
94   glutInitDisplayMode( GLUT_RGB | GLUT_SINGLE | GLUT_DEPTH );
95   glutCreateWindow(argv[0]);
96   glewInit();
97   glutReshapeFunc( Reshape );
98   glutKeyboardFunc( Key );
99   glutDisplayFunc( Display );
100   Init();
101   glutMainLoop();
102   return 0;
103}
104