如何在OpenGL(GLUT)场景中创建静态背景图像？

#include <GL/glut.h>
#include <SOIL.h>

GLuint backgroundTexture;

void Initialize() {
    glGenTextures(1, &backgroundTexture);
    glBindTexture(GL_TEXTURE_2D, backgroundTexture);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    int width, height;
    unsigned char* image = SOIL_load_image("background.jpg", &width, &height, 0, SOIL_LOAD_RGB);
    if (image == NULL) {
        printf("Error loading image\n");
        exit(1);
    }
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
    SOIL_free_image_data(image);
}

void Display() {
    glClear(GL_COLOR_BUFFER_BIT);
    glBindTexture(GL_TEXTURE_2D, backgroundTexture);
    glEnable(GL_TEXTURE_2D);
    glBegin(GL_QUADS);
    glTexCoord2f(0.0f, 0.0f); glVertex2f(-1.0f, -1.0f);
    glTexCoord2f(1.0f, 0.0f); glVertex2f(1.0f, -1.0f);
    glTexCoord2f(1.0f, 1.0f); glVertex2f(1.0f, 1.0f);
    glTexCoord2f(0.0f, 1.0f); glVertex2f(-1.0f, 1.0f);
    glEnd();
    glDisable(GL_TEXTURE_2D);
    glutSwapBuffers();
}

int main(int argc, char** argv) {
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA);
    glutInitWindowSize(800, 600);
    glutCreateWindow("OpenGL Background");
    Initialize();
    glutDisplayFunc(Display);
    glutMainLoop();
    return 0;
}