OpenGL建立一个帧缓存区的代码

以下是建立一个帧缓存区的 OpenGL 代码示例：

// 创建帧缓存对象
GLuint fbo;
glGenFramebuffers(1, &fbo);
glBindFramebuffer(GL_FRAMEBUFFER, fbo);

// 创建纹理对象
GLuint tex;
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
glTexImage2D(GL_TEXTURE_2D, , GL_RGBA, width, height, , GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

// 将纹理对象附加到帧缓存对象上
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT, GL_TEXTURE_2D, tex, );

// 创建深度缓存对象
GLuint depth;
glGenRenderbuffers(1, &depth);
glBindRenderbuffer(GL_RENDERBUFFER, depth);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, width, height);

// 将深度缓存对象附加到帧缓存对象上
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, depth);

// 检查帧缓存对象是否完整
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
printf("Framebuffer is not complete!\n");
}

// 解绑帧缓存对象
glBindFramebuffer(GL_FRAMEBUFFER, );