Hi gys I am fairly new to Opengl and am currently having some issues with lighting on a texture. Basically I am trying to create a simple lighting demo that consists of a spinning block with lighting. Now I have my spinning block coloured white and its rotating on the y axis no problems there. Simple stuff so far. Following on from added some simple lighting ( ambient, positioned and directed ), worked like a charm. I have my spinning white block with some nice lighting. Now here is where I hit the wall, after loading a texture, binding it and setting its coordinates the texture displays but its unaffected by lighting. Now I have scowered the internet looking for a solution, the openGL documentations tells me I need to add
glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ); ( if my understanding of this is correct it tells textures to be processed per vertex rather then over the spread of the texture) so I added this line of code sadly it made no difference. Now I have backtracked through some tutorial I originally read to double check my code. I believe all my declarations are correct so I think I might be doing something in the wrong order??

heres some code of my code

startup function

bool MainWnd::InitGL()
{
//Set clear color
//glClearColor( 0, 0, 0, 0 );
glClearColor( 0.0f, 0.0f, 0.0f, 1.0f );
//Set projection
glMatrixMode( GL_PROJECTION );
glLoadIdentity();
gluPerspective( 45.0, (double)Initialize::SCREEN_WIDTH / (double)Initialize::SCREEN_HEIGHT, 1.0, 200.0 );
glViewport( 0, 0, Initialize::SCREEN_WIDTH, Initialize::SCREEN_HEIGHT );
SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER, 1 );
glEnable( GL_BLEND );
glBlendFunc( GL_ONE, GL_ONE_MINUS_SRC_ALPHA );
//lighting and shading
glEnable( GL_LIGHTING );
glEnable( GL_LIGHT0 );
glEnable( GL_LIGHT1 );
glShadeModel( GL_SMOOTH );
glEnable( GL_COLOR_MATERIAL );
glEnable( GL_DEPTH_TEST );
glEnable( GL_NORMALIZE );
//Initialize modelview matrix
glMatrixMode( GL_MODELVIEW );
glLoadIdentity();

//If there was any errors
if( glGetError() != GL_NO_ERROR )
{
ErrorSystem::instance().WriteError( "MainWnd GL load Fail" );
return false;
}
//If everything initialized
return true;
}


Lighting setup

void LogicEngine::DoDrawing()
{
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

glLoadIdentity();
_Camera->Render();

//Add ambient light
GLfloat ambientColor[] = {1.0f, 1.0f, 1.0f, 1.0f}; //Color (0.2, 0.2, 0.2)
glLightModelfv( GL_LIGHT_MODEL_AMBIENT, ambientColor );

//Add positioned light
GLfloat lightColor0[] = {0.5f, 0.5f, 0.5f, 0.0f};
GLfloat lightPos0[] = {4.0f, 0.0f, 8.0f, 1.0f};
glLightfv( GL_LIGHT0, GL_DIFFUSE, lightColor0 );
glLightfv( GL_LIGHT0, GL_POSITION, lightPos0 );

//Add directed light
GLfloat lightColor1[] = {0.5f, 0.2f, 0.2f, 10.0f};
GLfloat lightPos1[] = {-1.0f, 0.5f, 0.5f, 1.0f};
glLightfv( GL_LIGHT1, GL_DIFFUSE, lightColor1 );
glLightfv( GL_LIGHT1, GL_POSITION, lightPos1 );

DrawBoxes();
//DrawTerrain();
SDL_GL_SwapBuffers();
}


DrawBox

void LogicEngine::DrawBoxes()
{
glPushMatrix();
glTranslatef(0.0f, 1.5f, -8.0f);
glRotatef(_Angle, 0.0f, 1.0f, 0.0f);
glColor4ub( 255,255,255,255 );

glEnable( GL_TEXTURE_2D );
glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
glBindTexture(GL_TEXTURE_2D, _pFace1->GetTexture());
float x = 0;
float y = 0;
glBegin(GL_QUADS);
//Front

x = GetClippingPercentage( 0, _pFace1->_TextureDimentions.width );
y = GetClippingPercentage( 0, _pFace1->_TextureDimentions.height );

//TL
glNormal3f(-1.0f, 0.0f, 1.0f);
glTexCoord2f( x, y );
glVertex3f(-1.5f, -1.0f, 1.5f);
x = GetClippingPercentage( _pFace1->_SpriteDimentions.width, _pFace1->_TextureDimentions.width );
y = GetClippingPercentage( 0, _pFace1->_TextureDimentions.height );
//TR
glNormal3f(1.0f, 0.0f, 1.0f);
glTexCoord2f( x, y );
glVertex3f(1.5f, -1.0f, 1.5f);
x = GetClippingPercentage( _pFace1->_SpriteDimentions.width, _pFace1->_TextureDimentions.width );
y = GetClippingPercentage( _pFace1->_SpriteDimentions.height, _pFace1->_TextureDimentions.height );
//BR
glNormal3f(1.0f, 0.0f, 1.0f);
glTexCoord2f( x, y );
glVertex3f(1.5f, 1.0f, 1.5f);
x = GetClippingPercentage( 0, _pFace1->_TextureDimentions.width );
y = GetClippingPercentage( _pFace1->_SpriteDimentions.height, _pFace1->_TextureDimentions.height );
//BL
glNormal3f(-1.0f, 0.0f, 1.0f);
glTexCoord2f( x, y );
glVertex3f(-1.5f, 1.0f, 1.5f);

glEnd();

//removed code for second box

glPopMatrix();
}


Here an image of the output



Thanks in advanced

thanks for the info dude, I actually have found the problem. It was the fact that I was setting my ambient lighting to perfect white so in fact my other lighting sources were working fine it just wasn't showing through because the ambient lighting was over power it

if you wouldn't mind can you point me in the direction of some new "up to date" lighting references/tutorials