纹理参数的持久性

我使用glbindTexture()绑定以前创建的纹理。在glbindTexture()调用之后,我使用gltexParameteri()设置min和mag过滤器。到目前为止没问题。

我使用gltexparameteri()设置的参数是否绑定到纹理本身,或者如果绑定其他纹理,这些参数是否丢失。我要再放一次吗?

glGenTexture(1, &tex1);
glGenTexture(1, &tex2);

/* bind tex1 and set params */
glBindtexture(GL_TEXTURE_RECTANGLE_ARB, tex1);
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, ...);
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

/* do something */

/* bind tex2 and set params */
glBindtexture(GL_TEXTURE_RECTANGLE_ARB, tex2);
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, ...);
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

/* do something */

/* bind tex1 again */
glBindtexture(GL_TEXTURE_RECTANGLE_ARB, tex1);

/* do i have to set the parameters from above again or are they stored with tex1? */