c++ - 损坏的纹理编号 OpenGL，在 glGenTextures/glBindTexture 之后

Question

我的一个纹理在 OpenGL 上有一个糟糕的行为。

删除纹理后，我创建一个新纹理，它生成与之前相同的 tex 编号，但纹理不正确。另外 glGetError 在每一行总是返回 0!我试图在 glDeleteTextures 之后添加 glFlush/glFinish，但它没有任何改变!纹理编号似乎锁定在某处......为什么？

它是单线程的，这里是行为:

//myTexture == 24 is loaded and works correctly
GLboolean bIsTexture = glIsTexture(myTexture); //returns 1 = > ok
glDeleteTextures(1,&myTexture);
bIsTexture = glIsTexture(myTexture); //returns 0 => ok

//Let's create a new texture
glGenTextures(1,&myTexture);//myTexture == 24 (as the glDelete was ok)
glBindTexture(GL_TEXTURE_2D,myTexture);     
bIsTexture = glIsTexture(myTexture); //returns 0 => FAILS

Answer 1

在创建已经绑定(bind)的纹理之前调用 BindTexture 为 0 :

//Let's create a new texture
glBindTexture(GL_TEXTURE_2D,0); // free the old bind texture if deleted
glGenTextures(1,&myTexture);//myTexture == 24 (as the glDelete was ok)
glBindTexture(GL_TEXTURE_2D,myTexture);     
bIsTexture = glIsTexture(myTexture); //returns 1 => Ok