progs/tests/arbvptest3.c

   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 #define GL_GLEXT_PROTOTYPES
   9 #include <GL/glut.h>
  10
  11 static float Zrot = 0.0;
  12
  13
  14 static void Display( void )
  15 {
  16    glClearColor(0.3, 0.3, 0.3, 1);
  17    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
  18
  19    glEnable(GL_VERTEX_PROGRAM_NV);
  20
  21    glLoadIdentity();
  22    glRotatef(Zrot, 0, 0, 1);
  23
  24    glPushMatrix();
  25
  26    glVertexAttrib3fARB(3, 1, 0.5, 0.25);
  27    glBegin(GL_TRIANGLES);
  28 #if 1
  29    glVertexAttrib3fARB(3, 1.0, 0.0, 0.0);
  30    glVertexAttrib2fARB(0, -0.5, -0.5);
  31    glVertexAttrib3fARB(3, 0.0, 1.0, 0.0);
  32    glVertexAttrib2fARB(0, 0.5, -0.5);
  33    glVertexAttrib3fARB(3, 0.0, 0.0, 1.0);
  34    glVertexAttrib2fARB(0, 0,  0.5);
  35 #else
  36    glVertex2f( -1, -1);
  37    glVertex2f( 1, -1);
  38    glVertex2f( 0,  1);
  39 #endif
  40    glEnd();
  41
  42    glPopMatrix();
  43
  44    glutSwapBuffers();
  45 }
  46
  47
  48 static void Reshape( int width, int height )
  49 {
  50    glViewport( 0, 0, width, height );
  51    glMatrixMode( GL_PROJECTION );
  52    glLoadIdentity();
  53    /*   glFrustum( -2.0, 2.0, -2.0, 2.0, 5.0, 25.0 );*/
  54    glOrtho(-2.0, 2.0, -2.0, 2.0, -2.0, 2.0 );
  55    glMatrixMode( GL_MODELVIEW );
  56    glLoadIdentity();
  57    /*glTranslatef( 0.0, 0.0, -15.0 );*/
  58 }
  59
  60
  61 static void Key( unsigned char key, int x, int y )
  62 {
  63    (void) x;
  64    (void) y;
  65    switch (key) {
  66       case 'z':
  67          Zrot -= 5.0;
  68          break;
  69       case 'Z':
  70          Zrot += 5.0;
  71          break;
  72       case 27:
  73          exit(0);
  74          break;
  75    }
  76    glutPostRedisplay();
  77 }
  78
  79
  80 static void Init( void )
  81 {
  82    GLint errno;
  83    GLuint prognum;
  84
  85    static const char *prog1 =
  86       "!!ARBvp1.0\n"
  87       "MOV  result.color, vertex.color;\n"
  88
  89       "DP4  result.position.x, vertex.position, state.matrix.modelview.row[0];\n"
  90       "DP4  result.position.y, vertex.position, state.matrix.modelview.row[1];\n"
  91       "DP4  result.position.z, vertex.position, state.matrix.modelview.row[2];\n"
  92       "DP4  result.position.w, vertex.position, state.matrix.modelview.row[3];\n"
  93       "END\n";
  94
  95    glGenProgramsARB(1, &prognum);
  96
  97    glBindProgramARB(GL_VERTEX_PROGRAM_ARB, prognum);
  98    glProgramStringARB(GL_VERTEX_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
  99                         strlen(prog1), (const GLubyte *) prog1);
 100
 101    assert(glIsProgramARB(prognum));
 102    errno = glGetError();
 103    printf("glGetError = %d\n", errno);
 104    if (errno != GL_NO_ERROR)
 105    {
 106       GLint errorpos;
 107
 108       glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errorpos);
 109       printf("errorpos: %d\n", errorpos);
 110       printf("%s\n", (char *)glGetString(GL_PROGRAM_ERROR_STRING_ARB));
 111    }
 112 }
 113
 114
 115 int main( int argc, char *argv[] )
 116 {
 117    glutInit( &argc, argv );
 118    glutInitWindowPosition( 0, 0 );
 119    glutInitWindowSize( 250, 250 );
 120    glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH );
 121    glutCreateWindow(argv[0]);
 122    glutReshapeFunc( Reshape );
 123    glutKeyboardFunc( Key );
 124    glutDisplayFunc( Display );
 125    Init();
 126    glutMainLoop();
 127    return 0;
 128 }