Rotating form is lagging by using glEnable()

[Saladir]

Hey guys,

topic descripes my problem.

i tried to build a simple Quads and Triangles House in OpenGL.
This wasn't the problem. The problem is the color.
i want to give every wall another color. but when it's rotating(x) a dominating color from the other walls is printing through my nearest wall.
i tried to solve this problem with glEnable( GL_DEPTH_TEST );
IT WORKS! but not like intended. the graphic is blinking(dont know how to write it in english).
i placed it already in every function(what includes gl stuff)
i asked a friend and he said that it have to be in my opengl_reset_scene

gl_reset_scene():

void OpenGL_Init::gl_reset_scene(){
	if( iWidht == 0.0f ){
		iWidht = 1.0f;
	}
	if( iHeight == 0.0f){
		iHeight = 1.0f;
	}
 
	glViewport( 0 , 0, this->iWidht, this->iHeight );
	glMatrixMode( GL_PROJECTION );
	glLoadIdentity();
	gluPerspective(45.0f, this->iWidht/this->iHeight, 0.0f, 100.0f);
	glMatrixMode( GL_MODELVIEW );
	glLoadIdentity();
        glEnable( GL_DEPTH_TEST );
 
}

main.cpp

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR szCmdLine, int iCmd){
 
 
	OpenGL_Init start;
 
 
	start.screen_setup(hInstance, iCmd, 800, 460 );
	start.opengl_setup(  );
	start.gl_reset_scene();
	start.gl_draw_scene();
 
	while ( true ){
		if( start.key_pressed(  )){
			break;
		}
 
		else{
 
		if(!start.gl_draw_scene()){
			MessageBox( NULL,"draw scene error","Error", MB_OK|MB_ICONERROR);
			break;
		}
		else{
			SwapBuffers( start.get_hDC());
		}
		}
	}
 
	return 0;
 
}

i use opengl 2.1

[tonyo_au]

Are you trapping you erasebackgound command from windows and discarding it. Windows may be erasing you window's background causing a flicker.

[V-man]

Your problem is this

gluPerspective(45.0f, this->iWidht/this->iHeight, 0.0f, 100.0f);

http://www.opengl.org/wiki/Common_Mi...ad_znear_value