讀檔

glEnable(GL_TEXTURE_2D);

IplImage *img = cvLoadImage("earth.jpg");

cvCvtColor(img, img, CV_BGR2RGB);

GLuint id;

glGenTextures(1, &id);

glBindTexture(GL_TEXTURE_2D, id);

glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);

glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_LINEAR);

glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_LINEAR);

glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 

0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);