Cannot use gl primitives in my mobile application

[akhil]

i tried running the following code on a mobile device but i'm getting few errors. the code works fine for desktop or a simulator but shows error for a device..

errors:
'glBegin' was not declared in this scope
'glVertex3f' was not declared in this scope
'glEnd' was not declared in this scope

and so on....

File name:
glwidget.cpp

@
#include "glwidget.h"
#include <QtOpenGL>

Glwidget::Glwidget(QWidget *parent) :
QGLWidget(parent)
{
}
void Glwidget::initializeGL ()
{
glClearColor (1,1,0,1);
}

void Glwidget::resizeGL (int w, int h){

}
void Glwidget::paintGL (){
glClear (GL_COLOR_BUFFER_BIT);
qglColor (QColor(255, 0, 0, 127));
glBegin(GL_TRIANGLES);
glVertex3f(1,1,0);
glVertex3f(-1,-1,0);
glVertex3f(0,5,0);

glEnd();

}
@

pro file:

@

Add files and directories to ship with the application

by adapting the examples below.

file1.source = myfile

dir1.source = mydir

DEPLOYMENTFOLDERS = # file1 dir1

symbian:TARGET.UID3 = 0xE0DB25C3

Allow network access on Symbian

symbian:TARGET.CAPABILITY += NetworkServices

If your application uses the Qt Mobility libraries, uncomment

the following lines and add the respective components to the

MOBILITY variable.

CONFIG += mobility

MOBILITY +=

QT+=opengl
SOURCES += main.cpp mainwindow.cpp
glwidget.cpp \

HEADERS += mainwindow.h
glwidget.h
gl.h
FORMS += mainwindow.ui

Please do not modify the following two lines. Required for deployment.

include(deployment.pri)
qtcAddDeployment()
@

if anyone finds a solution to the problem kindly help me out..

thanks :)

[Edit: Please wrap code in @ blocks. -mlong]

[shoyeb]

in ur .pro file, have u added the following line..

@QT += opengl@

[akhil]

yes i've done this in my pro file

[jmacey]

Most mobile devices do not have immediate mode OpenGL as they use OpenGL ES. This means all things such as glBegin glVertex are not part of the library and you will have to use either vertex arrays or vertex buffer objects.

You will also need to use some form of shader as the normal fixed function GL shading is also not present. This is a good place to start. http://www.khronos.org/opengles/2_X/

[akhil]

okay.. got it.. thanks...