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    <p>Okay the problem was that I was only drawing 2 vertices and <code>GL_QUAD_STRIP</code> requires 4. The following code now has both vertices set up properly and texture working</p> <pre><code> double x, y, z, dTheta=180/divisions, dLon=360/divisions, degToRad=3.141592665885/180 ; for(double lat =0; lat &lt;=180; lat+=dTheta) { glBegin( GL_QUAD_STRIP ) ; for(double lon =0 ; lon &lt;=360 ; lon+=dLon) { //Vertex 1 x = r*cos(lon * degToRad) * sin(lat * degToRad) ; y = r*sin(lon * degToRad) * sin(lat * degToRad) ; z = r*cos(lat * degToRad) ; glNormal3d( x, y, z) ; glTexCoord2d(lon/360-0.25, lat/180); glVertex3d( x, y, z ) ; //Vetex 2 x = r*cos(lon * degToRad) * sin( (lat + dTheta)* degToRad) ; y = r*sin(lon * degToRad) * sin((lat + dTheta) * degToRad) ; z = r*cos( (lat + dTheta) * degToRad ) ; glNormal3d( x, y, z ) ; glTexCoord2d(lon/360-0.25, (lat + dTheta-1)/(180)); glVertex3d( x, y, z ) ; //Vertex 3 x = r*cos((lon + dLon) * degToRad) * sin((lat) * degToRad) ; y = r*sin((lon + dLon) * degToRad) * sin((lat) * degToRad) ; z = r*cos((lat) * degToRad ) ; glNormal3d( x, y, z ) ; glTexCoord2d((lon + dLon)/(360)-0.25 ,(lat)/180); glVertex3d( x, y, z ) ; //Vertex 4 x = r*cos((lon + dLon) * degToRad) * sin((lat + dTheta)* degToRad) ; y = r*sin((lon + dLon)* degToRad) * sin((lat + dTheta)* degToRad) ; z = r*cos((lat + dTheta)* degToRad ) ; glNormal3d( x, y, z ) ; glTexCoord2d((lon + dLon)/360-0.25, (lat + dTheta)/(180)); glVertex3d( x, y, z ) ; } glEnd() ; } </code></pre> <p>Hope people who get stuck may find this useful.</p>
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