> > When I try to run an example from Erco's web page example I get this: > > http://f.imagehost.org/0170/opengl_error.jpg > > > > Here is the example: > > > > #ifdef _WIN32 > > #include <windows.h> > > #endif > > #include <math.h> > > #include <FL/Fl.h> > > #include <FL/Fl_Window.h> > > #include <FL/Fl_Gl_Window.h> > > #include <FL/gl.h> > > #include <FL/glut.h> > > // > > // Render a simple opengl shaded sphere with a single side light -- erco > > 11/28/08 > > // NOTE: Glut needed *only* for glutSolidSphere() > > // > > class MyGlWindow : public Fl_Gl_Window { > > public: > > // RESHAPE THE VIEWPORT > > void Reshape(GLfloat W, GLfloat H) { > > // (REFERENCE: SGI light.c DEMO) > > GLfloat ratio = W / H; > > glViewport(0, 0, (GLsizei)W, (GLsizei)H); > > glMatrixMode(GL_PROJECTION); > > glLoadIdentity(); > > glOrtho(-1.5*ratio, 1.5*ratio, -1.5, 1.5, -10.0, 10.0); > > glMatrixMode(GL_MODELVIEW); > > glLoadIdentity(); > > } > > void draw() { > > if (!valid()) { > > valid(1); > > Reshape(w(), h()); > > // (REFERENCE: SGI 'light.c' EXAMPLE) > > GLfloat mat_ambient[] = { 1.0, 1.0, 1.0, 1.0 }; // RGBA > > GLfloat mat_diffuse[] = { 1.0, 1.0, 1.0, 1.0 }; // RGBA > > GLfloat mat_specular[] = { 1.0, 1.0, 1.0, 1.0 }; // RGBA > > GLfloat light_position[] = { 5.0, 5.0, 0.0, 0.0 }; // XYZ > > glClearColor(0.0, 0.0, 0.4, 0.0); // bg color > > glShadeModel(GL_SMOOTH); > > // > > glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient); > > glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse); > > glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular); > > glMaterialf(GL_FRONT, GL_SHININESS, 20.0); > > glLightfv(GL_LIGHT0, GL_POSITION, light_position); > > // > > glEnable(GL_LIGHTING); > > glEnable(GL_LIGHT0); > > glEnable(GL_DEPTH_TEST); > > } > > glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); > > glPushMatrix(); > > glColor3f(0.5, 0.5, 0.5); > > glutSolidSphere(0.5, 30, 30); > > glPopMatrix(); > > } > > // CTOR > > MyGlWindow(int X,int Y,int W,int H,const char*L=0) : > > Fl_Gl_Window(X,Y,W,H,L) { > > } > > }; > > int main() { > > Fl_Window win(640, 480, "sphere"); > > MyGlWindow mygl(10, 10, win.w()-20, win.h()-20); > > win.resizable(&mygl); > > win.show(); > > return(Fl::run()); > > } > > > > > > I do get this kind of errors with all FLTK OpenGl programs! > > Is this a bug or somethig is bad in my system? > > > > I run on my laptop Slackware Linux 12.2, my video drivers are instaled > > (Intel GM965). And I have tried the example with FLTK2 too, the same > > problem. > > > By the way, I forgot to write what the same example was running well before I > have installed some programs for openbox (PIL etc.).
OK! I have fixed this problem. I have just installed Mesa! _______________________________________________ fltk-opengl mailing list [email protected] http://lists.easysw.com/mailman/listinfo/fltk-opengl
