OpenGL used on Android

Public class glsurfaceviewactivity extends activity {
 
Private myglsurfaceview mglsurfaceview;
/** Called when the activity is first created .*/
@ Override
Public void oncreate (bundle savedinstancestate ){
Super. oncreate (savedinstancestate );
Mglsurfaceview = new myglsurfaceview (this );
Setcontentview (mglsurfaceview );
// Setcontentview (R. layout. Main );
}
}
Public class myglsurfaceview extends glsurfaceview {
Private myglrenderer mrender;
 
Public myglsurfaceview (context ){
Super (context );
// Todo auto-generated constructor stub
Mrender = new myglrenderer ();
Setrenderer (mrender); // specify the mrender object. This mrender object is used to draw 3D images in glsurfaceview.
}
}
Public class myglrenderer implements Renderer {// instantiate OpenGL. glsurfaceview. Renderer requires three methods,
Public void ondrawframe (gl10 GL); Draws the current frame of glsurfaceview.
Public void onsurfacechanged (gl10 GL, int width, int height): gl10 is the paint brush, which is called back when the glsurfaceview size changes.
Public void onsurfacecreated (gl10 GL, eglconfig config): callback when glsurfaceview is created.
Public void onsurfacecreated (gl10 GL, eglconfig config ){
// Todo auto-generated method stub

Loadgif ("Data/APP/girl.gif ");
Gl. glable (gl11.gl _ dither); // enable anti-Jitter
Gl. gldisable (gl11.gl _ lighting );
// Set the system's correction to a certain aspect. Here, the perspective correction is made.
Gl. glhint (gl10.gl _ perspctive_correction_hint, ggl10.gl _ fastest );
// Enable textures. Enable texture Paster
Gl. glable (gl11.gl _ texture_2d );
Gl. gltexenvf (gl11.gl _ texture_env, gl11.gl _ texture_env_color, gl11.gl _ replace );

// Set up state for multitexture operations. Since multitexture is
// Currently used
// Only for layered crossfades the needed State can be factored out
// One-time
// Initialization. This section may need to be folded into drawmixed2d ()
// If multitexture
// Is used for other effects.

// Enable vertex Arrays
Gl. glableclientstate (gl11.gl _ vertex_array );

// Enable depth test.
Gl. glable (gl11.gl _ depth_test );
Gl. gldepthfunc (gl11.gl _ lequal );

// Set the blend function for premultiplied Alpha.
Gl. glable (gl10.gl _ blend );
Gl. glblendfunc (gl11.gl _ src_alpha, gl11.gl _ one_minus_src_alpha );

// Set the background color.
Gl. glclearcolor (0.0f, 0.0f, 0.0f, 0.0f );
Gl. glclear (gl11.gl _ color_buffer_bit );
}
Public void onsurfacechanged (gl10 GL, int width, int height ){
// Todo auto-generated method stub
Final float znear = 0.1f;
Final float zfar = 100366f;
Gl. glviewport (0, 0, width, height );
Gl. glmatrixmode (gl11.gl _ projection );
Gl. glloadidentity ();
Glu. gluperspective (GL, 45.0f, (float) width/height, znear, zfar );
Gl. glmatrixmode (gl11.gl _ modelview );
}