Freeglut/X server problems

[Mach1723]

Attempting to create a simple window with freeglut and i get the error:



freeglut (./ogl_tri): ERROR: Internal error <Visual with necessary capabilities not found> in function fgOpenWindow
X Error of failed request: BadWindow (invalid Window parameter)
Major opcode of failed request: 4 (X_DestroyWindow)
Resource id in failed request: 0x0
Serial number of failed request: 20
Current serial number in output stream: 23


Heres the code i am attempting to compile:



//build args: gcc -g ogl_tri.c -o ogl_tri -lglut

#include <GL/freeglut_std.h>


const int width = 800;
const int height = 600;


GLvoid InitGL(GLvoid);
GLvoid DrawGL(GLvoid);
GLvoid ResizeGL(GLsizei width,GLsizei height);

int main(int argc, char** argv)
{
glutInit(&argc, argv);

glutInitDisplayMode(GLUT_DOUBLE || GLUT_RGB || GLUT_DEPTH);

glutInitWindowSize(width,height);

glutCreateWindow("");

InitGL();

glutDisplayFunc(DrawGL);
glutReshapeFunc(ResizeGL);
glutMainLoop();

return 0;
}


GLvoid ResizeGL(GLsizei width,GLsizei height)
{
if(height == 0)
{
height = 1;
}

glViewport(0,0,width,height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();

gluPerspective(45.0f,(GLfloat)width /(GLfloat)height,0.1f,100.0f);
glMatrixMode(GL_MODELVIEW);

glLoadIdentity();



}

GLvoid InitGL(GLvoid)
{
glShadeModel(GL_SMOOTH);
glClearColor(0.0f,0.0f,0.0f,0.0f);
glClearDepth(1.0f);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
glHint(GL_PERSPECTIVE_CORRECTION_HINT , GL_NICEST);



}

GLvoid DrawGL(GLvoid)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
}

[Mach1723]

glutInitDisplayMode(GLUT_DOUBLE || GLUT_RGB || GLUT_DEPTH); - the problem was apparently the || changed |.

it opens a entry on the taskbar, but no display, that could be double buffering though.

EDIT: Not double buffering still no window
EDIT2: Turned off compiz got a window no contents, regardless of double buffering.

[Mach1723]

The code in its current state.


//build args: gcc -g ogl_tri.c -o ogl_tri -lglut

#include <GL/glut.h>
#include <unistd.h>

const int width = 800;
const int height = 600;


GLvoid InitGL(GLvoid);
GLvoid DrawGL(GLvoid);
GLvoid ResizeGL(GLsizei width,GLsizei height);

int main(int argc, char** argv)
{
glutInit(&argc, argv);

glutInitDisplayMode(GLUT_DOUBLE |GLUT_RGBA |GLUT_DEPTH);

glutInitWindowSize(width,height);

glutCreateWindow("Window");

InitGL();

glutDisplayFunc(DrawGL);
glutReshapeFunc(ResizeGL);
glutMainLoop();

return 0;
}


GLvoid ResizeGL(GLsizei width,GLsizei height)
{
if(height == 0)
{
height = 1;
}

glViewport(0,0,width,height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();

gluPerspective(45.0f,(GLfloat)width /(GLfloat)height,0.1f,100.0f);
glMatrixMode(GL_MODELVIEW);

glLoadIdentity();

}

GLvoid InitGL(GLvoid)
{
glShadeModel(GL_SMOOTH);//activates smooth shading
glClearColor(0.0f,0.0f,0.0f,0.0f);//makes bg color black
glClearDepth(1.0f);//sets depth to 1.0?
glEnable(GL_DEPTH_TEST);//tests depth
glDepthFunc(GL_LEQUAL);//depth testing functions
glHint(GL_PERSPECTIVE_CORRECTION_HINT , GL_NICEST);//hints what perspective to use



}

GLvoid DrawGL(GLvoid)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); //clears the buffer before rendering
glLoadIdentity(); //rerenders?
glBegin(GL_TRIANGLES);//creates a tri
glVertex3f( 0.0f, 1.0f, 0.0f);
glVertex3f(-1.0f,-1.0f, 0.0f);
glVertex3f( 1.0f,-1.0f, 0.0f);
glEnd();//ends
}

with compiz off the window opens but displays nothing but whatever the spawned window was infront as can be seen in this screeny.

http://lh3.ggpht.com/_hvYTk6wBQV8/S5RdFIeqkaI/AAAAAAAABoo/js5sWqpa59s/s912/2344.png