1/* Test rebasing */
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
11#define NR_VERTS 20000
12GLfloat verts[NR_VERTS][4];
13GLushort indices[NR_VERTS*2];
14
15
16
17static void Init( void )
18{
19   GLint errnum;
20   GLuint prognum;
21   GLint i;
22
23   static const char *prog1 =
24      "!!ARBvp1.0\n"
25      "MOV  result.color, {1.0}.xxxx;\n"
26      "MOV  result.position, vertex.position;\n"
27      "END\n";
28
29   glGenProgramsARB(1, &prognum);
30   glBindProgramARB(GL_VERTEX_PROGRAM_ARB, prognum);
31   glProgramStringARB(GL_VERTEX_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
32		      strlen(prog1), (const GLubyte *) prog1);
33
34   assert(glIsProgramARB(prognum));
35   errnum = glGetError();
36   printf("glGetError = %d\n", errnum);
37   if (errnum != GL_NO_ERROR)
38   {
39      GLint errorpos;
40
41      glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errorpos);
42      printf("errorpos: %d\n", errorpos);
43      printf("%s\n", (char *)glGetString(GL_PROGRAM_ERROR_STRING_ARB));
44   }
45
46
47   glEnableClientState( GL_VERTEX_ARRAY );
48   glEnableClientState( GL_COLOR_ARRAY );
49   glVertexPointer( 3, GL_FLOAT, sizeof(verts[0]), verts );
50
51
52   for (i = 0; i < NR_VERTS; i++) {
53      verts[i][0] = cos(i / (float)NR_VERTS * 2.0 * 3.141592);
54      verts[i][1] = sin(i / (float)NR_VERTS * 2.0 * 3.141592);
55      verts[i][2] = 0.0;
56      verts[i][3] = 1.0;
57
58      indices[2*i+0] = i;
59      indices[2*i+1] = (i+1 == NR_VERTS) ? 0 : i+1;
60   }
61}
62
63
64
65static void Display( void )
66{
67   glClearColor(0.3, 0.3, 0.3, 1);
68   glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
69
70   glEnable(GL_VERTEX_PROGRAM_NV);
71
72   /* Should have min_index == 1, maybe force a rebase:
73    */
74   glDrawElements( GL_LINES, NR_VERTS*2, GL_UNSIGNED_SHORT, indices );
75
76   glFlush();
77}
78
79
80static void Reshape( int width, int height )
81{
82   glViewport( 0, 0, width, height );
83   glMatrixMode( GL_PROJECTION );
84   glLoadIdentity();
85   glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
86   glMatrixMode( GL_MODELVIEW );
87   glLoadIdentity();
88   /*glTranslatef( 0.0, 0.0, -15.0 );*/
89}
90
91
92static void Key( unsigned char key, int x, int y )
93{
94   (void) x;
95   (void) y;
96   switch (key) {
97      case 27:
98         exit(0);
99         break;
100   }
101   glutPostRedisplay();
102}
103
104
105
106
107int main( int argc, char *argv[] )
108{
109   glutInit( &argc, argv );
110   glutInitWindowPosition( 0, 0 );
111   glutInitWindowSize( 250, 250 );
112   glutInitDisplayMode( GLUT_RGB | GLUT_SINGLE | GLUT_DEPTH );
113   glutCreateWindow(argv[0]);
114   glewInit();
115   glutReshapeFunc( Reshape );
116   glutKeyboardFunc( Key );
117   glutDisplayFunc( Display );
118   Init();
119   glutMainLoop();
120   return 0;
121}
122