求教为什么以下立方体的OpenGL代码在Windows下绘制正确，在Linux下就绘制有误

Question

glBindTexture(GL_TEXTURE_2D, texture[0]); glBegin(GL_QUADS);
// 前面
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f,  1.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f,  1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f,  1.0f,  1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f,  1.0f,  1.0f);
// 后面
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f,  1.0f, -1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f,  1.0f, -1.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
// 顶面
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f,  1.0f, -1.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f,  1.0f,  1.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f,  1.0f,  1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f,  1.0f, -1.0f);
// 底面
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f,  1.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f,  1.0f);
// 右面
glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f,  1.0f, -1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f,  1.0f,  1.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f,  1.0f);
// 左面
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f,  1.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f,  1.0f,  1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f,  1.0f, -1.0f);
glEnd();上面这段代码在Windows下能绘制出正常的立方体，在Linux下，绘制出来的立方体没有正面，而且旋转后，总是看不见那个“正面”，求教大侠，到底是什么原因？

Answer 1

在windows下如果正确 就应该没问题，可能出在别的地方

Answer 2

这里好像是 glBindTexture(GL_TEXTURE_2D, &texture[0]); 不知道你那里是怎么定义的

Answer 3

只是贴个纹理，不贴纹理，用颜色来做区分的话，Linux下的效果和在Windows的效果也是不一样的。
在Linux下，正面只显示出了一部分，就好像是被挖空了一样，从正面可以看到两侧和背面（正面正对的那个面），顶面和底面倒是看不到。所以感觉Linux下的绘制有问题啊。

Answer 4

呵呵，是法向的问题，你试试我以前的一个代码，加上面法线的
glBindTexture(GL_TEXTURE_2D, texture[0]); glBegin(GL_QUADS);
// 正前面
glNormal3f( 0.0f, 0.0f, 1.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f(-0.5f, -0.5f,  0.5f);
glTexCoord2f(1.0f, 0.0f); glVertex3f( 0.5f, -0.5f,  0.5f);
glTexCoord2f(1.0f, 1.0f); glVertex3f( 0.5f,  0.5f,  0.5f);
glTexCoord2f(0.0f, 1.0f); glVertex3f(-0.5f,  0.5f,  0.5f);
// 后面
glNormal3f( 0.0f, 0.0f,-1.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f(-0.5f, -0.5f, -0.5f);
glTexCoord2f(1.0f, 1.0f); glVertex3f(-0.5f,  0.5f, -0.5f);
glTexCoord2f(0.0f, 1.0f); glVertex3f( 0.5f,  0.5f, -0.5f);
glTexCoord2f(0.0f, 0.0f); glVertex3f( 0.5f, -0.5f, -0.5f);

// 底面
glNormal3f( 0.0f,-1.0f, 0.0f);
glTexCoord2f(1.0f, 1.0f); glVertex3f(-0.5f, -0.5f, -0.5f);
glTexCoord2f(0.0f, 1.0f); glVertex3f( 0.5f, -0.5f, -0.5f);
glTexCoord2f(0.0f, 0.0f); glVertex3f( 0.5f, -0.5f,  0.5f);
glTexCoord2f(1.0f, 0.0f); glVertex3f(-0.5f, -0.5f,  0.5f);
// 右面
glNormal3f( 1.0f, 0.0f, 0.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f( 0.5f, -0.5f, -0.5f);
glTexCoord2f(1.0f, 1.0f); glVertex3f( 0.5f,  0.5f, -0.5f);
glTexCoord2f(0.0f, 1.0f); glVertex3f( 0.5f,  0.5f,  0.5f);
glTexCoord2f(0.0f, 0.0f); glVertex3f( 0.5f, -0.5f,  0.5f);
// 左面
glNormal3f(-1.0f, 0.0f, 0.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f(-0.5f, -0.5f, -0.5f);
glTexCoord2f(1.0f, 0.0f); glVertex3f(-0.5f, -0.5f,  0.5f);
glTexCoord2f(1.0f, 1.0f); glVertex3f(-0.5f,  0.5f,  0.5f);
glTexCoord2f(0.0f, 1.0f); glVertex3f(-0.5f,  0.5f, -0.5f);
glEnd();