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並前往https://forum.qt.io/topic/39443/glreadpixels-what-am-i-missing

GlReadPixels - what am I missing? | Qt Forum

... QOpenGLFramebufferObject, counted 30 afterRendering and then I try glReadPixels(0,0720576,GL_RGBA,GL_RGBA8,pixdata); but my app crashes.

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