error C3861: 'gluBuild2DMipmaps': identifier not found

ELehmann

Hallo,

ich habe den folgenden Quellcode geschrieben:

#include "stdafx.h"
#include <SFML/Graphics.hpp>
#include <SFML/OpenGL.hpp>
#pragma comment(lib, "glu32.lib")
using namespace sf;

int main()
{
	RenderWindow window(VideoMode(800, 600), "SFML OpenGL");

	Texture t;
	t.loadFromFile("resources/background.jpg");
	Sprite background(t);

	GLuint texture = 0;
	{
		Image image;
		image.loadFromFile("resources/texture.jpg");

		glGenTextures(1, &texture);
		glBindTexture(GL_TEXTURE_2D, texture);
		gluBuild2DMipmaps(GL_TEXTURE_2D, GL_RGBA, image.getSize().x, image.getSize().y, GL_RGBA, GL_UNSIGNED_BYTE, image.getPixelsPtr());
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
	}
	glEnable(GL_DEPTH_TEST);
	glDepthMask(GL_TRUE);
	glClearDepth(1.f);
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	gluPerspective(90.f, 1.f, 1.f, 500.f);
	glEnable(GL_TEXTURE_2D);

	Clock clock;

	while (window.isOpen())
	{
		Event event;
		while (window.pollEvent(event))
		{
			if (event.type == Event::Closed)
				window.close();
		}
		float time = clock.getElapsedTime().asSeconds() * 100;
		float size = 20.f;

		//Draw the background
		window.pushGLStates();
		window.draw(background);
		window.popGLStates();

		//Clear the depth buffer
		glClear(GL_DEPTH_BUFFER_BIT);

		//Apply some transformations
		glMatrixMode(GL_MODELVIEW);
		glLoadIdentity();
		glTranslatef(0, 0, -100);
		glRotatef(time, 50, 50, 0);

		//Draw a cube
		glBindTexture(GL_TEXTURE_2D, texture);
		glBegin(GL_QUADS);
			// back
		glTexCoord2f(0, 0); glVertex3f(-size, -size, -size);
		glTexCoord2f(1, 0); glVertex3f( size, -size, -size);
		glTexCoord2f(1, 1); glVertex3f( size,  size, -size);
		glTexCoord2f(0, 1); glVertex3f(-size,  size, -size);
			//front
		glTexCoord2f(0, 0); glVertex3f( size, -size,  size);
		glTexCoord2f(1, 0); glVertex3f(-size, -size,  size);
		glTexCoord2f(1, 1); glVertex3f(-size,  size,  size);
		glTexCoord2f(0, 1); glVertex3f( size,  size,  size);
			//left
		glTexCoord2f(0, 0); glVertex3f(-size, -size,  size);
		glTexCoord2f(1, 0); glVertex3f(-size, -size, -size);
		glTexCoord2f(1, 1); glVertex3f(-size,  size, -size);
		glTexCoord2f(0, 1); glVertex3f(-size,  size,  size);
			//right
		glTexCoord2f(0, 0); glVertex3f( size, -size, -size);
		glTexCoord2f(1, 0); glVertex3f( size, -size,  size);
		glTexCoord2f(1, 1); glVertex3f( size,  size,  size);
		glTexCoord2f(0, 1); glVertex3f( size,  size, -size);
			//bottom
		glTexCoord2f(0, 0); glVertex3f(-size, -size,  size);
		glTexCoord2f(1, 0); glVertex3f( size,  size, -size);
		glTexCoord2f(1, 1); glVertex3f( size,  size,  size);
		glTexCoord2f(0, 1); glVertex3f(-size,  size,  size);
			//top
		glTexCoord2f(0, 0); glVertex3f(-size,  size, -size);
		glTexCoord2f(1, 0); glVertex3f( size,  size, -size);
		glTexCoord2f(1, 1); glVertex3f( size,  size,  size);
		glTexCoord2f(0, 1); glVertex3f(-size,  size,  size);

		glEnd();

		//display all
		window.display();
	}

	glDeleteTextures(1, &texture);

	return 0;
}

Das Problem, das ich habe ist, dass die Funktion "gluBuild2DMipmaps" nicht erkannt wird. Es wird der Fehler "error C3861: 'gluBuild2DMipmaps': identifier not found" ausgegeben. Ich weiß nicht woran das liegt. Kann mir irgendwer weiterhelfen?

Keine Ahnung davon, aber eine Suche im Netz fördert https://www.opengl.org/wiki/Common_Mistakes#gluBuild2DMipmaps zu Tage und da steht zu dieser Funktion "Never use this.". Vielleicht ist's Absicht dass man sie nicht so direkt aufrufen kann?

rapso

#include <Glu.h>