texture loading problem

Hi all: I met a problem when I am trying to load the textures. Here is my code:


GLuint	texture[3];		

/// here I use SOIL to load images.
texture[0] = SOIL_load_OGL_texture
            (
             (PICTUREPATH + "snowing.jpg").c_str(),
             SOIL_LOAD_AUTO,
             SOIL_CREATE_NEW_ID,
             SOIL_FLAG_MIPMAPS | SOIL_FLAG_INVERT_Y | SOIL_FLAG_NTSC_SAFE_RGB | SOIL_FLAG_COMPRESS_TO_DXT
            );
    texture[1] = SOIL_load_OGL_texture
            (
             (PICTUREPATH + "office-13.jpg").c_str(),
              SOIL_LOAD_AUTO,
              SOIL_CREATE_NEW_ID,
              SOIL_FLAG_MIPMAPS | SOIL_FLAG_INVERT_Y | SOIL_FLAG_NTSC_SAFE_RGB | SOIL_FLAG_COMPRESS_TO_DXT
            );
    
    texture[2] = SOIL_load_OGL_texture
            (
             (PICTUREPATH + "soft-green.jpg").c_str(),
              SOIL_LOAD_AUTO,
              SOIL_CREATE_NEW_ID,
              SOIL_FLAG_MIPMAPS | SOIL_FLAG_INVERT_Y | SOIL_FLAG_NTSC_SAFE_RGB | SOIL_FLAG_COMPRESS_TO_DXT
            );

The above are the initializations and loading images. The problem occurs at the texture generation step.


/// here comes to the problem
glGenTextures(3, texture);

/// the rest are as usual
// texture 1 (poor quality scaling)
    glBindTexture(GL_TEXTURE_2D, texture[0]);   // 2d texture (x and y size)

    glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST); 
    glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST); 

    
    glBindTexture(GL_TEXTURE_2D, texture[1]);
    
    glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); 
    glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); 
    
    glBindTexture(GL_TEXTURE_2D, texture[2]);
    
    glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR_MIPMAP_NEAREST); 
    glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_NEAREST); 


glBindTexture(GL_TEXTURE_2D, texture[0]);   // choose the texture to use.

    glBegin(GL_QUADS);		                // begin drawing a cube
    
    // Front Face (note that the texture's corners have to match the quad's corners)
    glNormal3f( 0.0f, 0.0f, 1.0f);                              // front face points out of the screen on z.
    glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f,  1.0f);	// Bottom Left Of The Texture and Quad
    glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f,  1.0f);	// Bottom Right Of The Texture and Quad
    glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f,  1.0f,  1.0f);	// Top Right Of The Texture and Quad
    glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f,  1.0f,  1.0f);	// Top Left Of The Texture and Quad
    
    // Back Face
    glNormal3f( 0.0f, 0.0f,-1.0f);                              // back face points into the screen on z.
    glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);	// Bottom Right Of The Texture and Quad
    glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f,  1.0f, -1.0f);	// Top Right Of The Texture and Quad
    glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f,  1.0f, -1.0f);	// Top Left Of The Texture and Quad
    glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);	// Bottom Left Of The Texture and Quad
	
    glEnd();

So the problem is that if I use glGenTextures(3, texture), then the texture is not probably sticked on the surface. However, it works if I use glGenTextures(0, texture); In this code, I meant to generate 3 textures instead of 0. Although the latter one works, it confused me. Can someone point out the error I made or what's really going on please? Thanks

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