Need Help with Texturing

[gigglie]

I tried creating my own texture using the following codes . Problem is
the emulator is exiting abruptly without any panic code . I am new in OpenGles . Please Help .

static const GLbyte vertices[4 * 3] = //row major 
	{
	-1, 0, 0,
	1, 0, 0,
	-1, 2, 0,
	1, 2, 0
	};
static const GLbyte skinvertices[4 *2] =
	{
	    /* top */
	    -1,  -1, 
	    1, -1 ,	    
	    1,	1,  
	    -1,  1
	};
/* Define indices for drawing the triangles. The color of the square
 *  is determined by the color of the last vertex of the square.*/
static const GLubyte triangles[2* 3] =
{
	/* up */
	0,1,2,
	/*down*/
	1,2,3
};
static const GLbyte nokTexCoords[4 * 2] = 
	{
	    /**** */
	    tex(0,0), 
	    tex(255,0),
	    tex(255,255), 
	    tex(0,255)
	};

/* Define normals for the cube */
static const GLbyte normals[4 * 3] =
{
    /* top */
    0,0,1,
    /* right */
    0,1,0,
    /* left */
    0,-1,0,
    /* back */
    -1,0,0,
  
};
#define LIGHT_MAX    (1 << 16)
#define LIGHTCOLOR(r, g, b, a)       \
       (GLfixed)(r * LIGHT_MAX),     \
       (GLfixed)(g * LIGHT_MAX),     \
       (GLfixed)(b * LIGHT_MAX),     \
       (GLfixed)(a * LIGHT_MAX)
/* Define global ambient light. */
static const GLfixed globalAmbient[4]      = { LIGHTCOLOR(0.0, 0.0, 0.0, 1.0) };

/* Define lamp parameters. */
static const GLfixed lightDiffuseLamp[4]   = { LIGHTCOLOR(1.0, 1.0, 1.0, 1.0) };
static const GLfixed lightAmbientLamp[4]   = { LIGHTCOLOR(0.3, 0.3, 0.3, 1.0) };
static const GLfixed lightSpecularLamp[4]  = { LIGHTCOLOR(0.5, 0.5, 0.5, 1.0) };
static const GLfixed lightPositionLamp[4]  = { 0, 0, 10, 0 };

GLuint CMobileEMailContainer::BindTextures(const TRect& aRect,TBool aWrap) const
{
GLuint texture;	
TRAPD(err,	
	// allocate a texture name
	glGenTextures( 2, &texture );
//	glBindTexture( GL_TEXTURE_2D,texture );//in here to test texture
	
	 /* Enable back face culling, texturing, and normalization. */   
    glEnable( GL_TEXTURE_2D );
    glEnable( GL_NORMALIZE  );    
	 /***an appropriate texture matrix has to be initialized*/
	glMatrixMode( GL_TEXTURE );
	glLoadIdentity();
	glScalef( 1.f / 128.f, 1.f / 128.f, 1.f );
	glTranslatef( 128.f, 128.f, 0.f );
	glMatrixMode( GL_MODELVIEW );
	glEnableClientState( GL_TEXTURE_COORD_ARRAY );	
	glEnableClientState( GL_NORMAL_ARRAY);
	// select our current texture
	glBindTexture( GL_TEXTURE_2D, texture );
	
	glTexImage2D( GL_TEXTURE_2D, 0, GL_RGB, aRect.Width(), aRect.Height(),
			0, GL_RGB, GL_UNSIGNED_BYTE, iImageEngine->TextureData());
	/**************Texture environment parameters are set using glTexEnvf().*/
	glTexEnvx( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE );
	glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER, GL_LINEAR);
	glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER, GL_LINEAR);
	// if wrap is true, the texture wraps over at the edges (repeat)
    //       ... false, the texture ends at the edges (clamp)
    glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,aWrap ? GL_REPEAT : GL_CLAMP_TO_EDGE );
    
	)
	Panic(err);	
	return texture;
}

void CMobileEMailContainer::SetLight() const
	{
	/* Set up global ambient light. */
    glLightModelxv( GL_LIGHT_MODEL_AMBIENT, globalAmbient );

    /* Set up lamp. */
    glEnable(   GL_LIGHT0 );
    glLightxv( GL_LIGHT0, GL_DIFFUSE,  lightDiffuseLamp  );
    glLightxv( GL_LIGHT0, GL_AMBIENT,  lightAmbientLamp  );
    glLightxv( GL_LIGHT0, GL_SPECULAR, lightSpecularLamp );
    glLightxv( GL_LIGHT0, GL_POSITION, lightPositionLamp );
    
    /* Set shading mode*/
	glShadeModel( GL_FLAT );
   
	}
// ---------------------------------------------------------
// CMobileEMailContainer::Draw(const TRect& aRect) const
// ---------------------------------------------------------
//

void CMobileEMailContainer::GenSkin(const TRect& aRect) const
{
TRAPD(err,
//	CFbsBitmap* TextureBitmap= new (ELeave)CFbsBitmap;
	TBool wrap=ETrue;	
	
	glBindTexture( GL_TEXTURE_2D, BindTextures(aRect,wrap) );
//	BindTextures(aRect,wrap,*TextureBitmap);//while bind texture is in Bindtextures 
//	 
	/* Enable vertex array */
//	glMatrixMode( GL_MODELVIEW );
	glEnableClientState( GL_VERTEX_ARRAY );		
	glLoadIdentity();
	SetLight();
	glClear( GL_COLOR_BUFFER_BIT );
	)
	Panic(err);	

	glTexCoordPointer( 2, GL_BYTE, 0, nokTexCoords );
	glNormalPointer( GL_BYTE, 0, normals );
	glVertexPointer( 2, /*GL_SHORT*/GL_BYTE, 0, skinvertices );
	glDrawElements( GL_TRIANGLES, 2* 3, GL_UNSIGNED_BYTE, triangles );
//	glDeleteTextures(2, &texture);
}

[wizard_hu_]

You can still check the end of the logfile (http://wiki.forum.nokia.com/index.php/Epocwind.out)

[serg3d]

GLuint texture;
glGenTextures( 2, &texture );

Wrong size. You have buffer overflow here.
Should be either GLuint texture[2] or glGenTextures(1, &texture );

Advice - if you are new to OpenGL start with simple OpenGL example from textbook and work you way from it to more complex. Copy-pasting complex code without understanding what does it do is risky - you may have a lot of problem with debugging.