Clion用opengl画直线

CMakeLists.txt:
cmake_minimum_required(VERSION 3.6)
project(clion)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

set(SOURCE_FILES  sdl2.cpp)
add_executable(clion ${SOURCE_FILES})

include_directories(/usr/include)
target_link_libraries(clion pthread SDL GL GLU glut)

sdl2.cpp:
#include <GL/glut.h>

void render() {
    glClear(GL_COLOR_BUFFER_BIT);
    glBegin(GL_LINES);
    //glVertex3f(-0.5f, -0.5f, 0.0f);
    glVertex3f(0.5f, 0.5f, 0.0f);
    glVertex3f(0.0f, 0.5f, 0.0f);

    glEnd();
    glFlush();
}


int main(int argc, char *argv[]) {
    glutInit(&argc, argv);
    glutInitWindowSize(480, 320);
    glutInitWindowPosition(200, 100);
    glutCreateWindow("OpenGL Demo");

    glutDisplayFunc(render);

    glutMainLoop();
    return 0;
}

运行结果：