glClear(GL_COLOR_BUFFER_BIT)之后OpenGL无效的帧缓冲区操作; [英] OpenGL invalid framebuffer operation after glClear(GL_COLOR_BUFFER_BIT);

问题描述

每次调用glClear(GL_COLOR_BUFFER_BIT);后，都会收到OpenGL错误无效的帧缓冲区操作".

Every time after I call glClear(GL_COLOR_BUFFER_BIT);, I get the OpenGL error "invalid framebuffer operation".

该呼叫似乎工作正常，并且似乎没有错.我在::paintGL()方法中首先调用glClear(GL_COLOR_BUFFER_BIT);.

The call seems to work just fine, and nothing seems wrong. I call glClear(GL_COLOR_BUFFER_BIT); first thing in the ::paintGL() method.

嗯?我应该忽略这个错误吗?

Huh? Should I just disregard this error?

推荐答案

我的最佳猜测是您的帧缓冲区不完整，并且在不完整的帧缓冲区上调用glClear会引发错误.

My best guess is that your framebuffer is not complete and calling glClear on an incomplete framebuffer is throwing the error.

使用glCheckFramebufferStatus检查帧缓冲区的状态，并确保其返回GL_FRAMEBUFFER_COMPLETE.

Check the status of the framebuffer using glCheckFramebufferStatus and make sure it returns GL_FRAMEBUFFER_COMPLETE.

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