GrabImage unreliable unless flip is called twice

BlitzMax Forums/BlitzMax Programming/GrabImage unreliable unless flip is called twice

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Dreamora
 #1
hmm just tested my "idea"
was wrong sorry ...

But in that case I don't understand why it should not grab any data ...

Did you try with DirectX?
Perhaps its really your card that can't and won't work with OpenGL (SiS, S3, Intel, ATI IGP or similar cards that are useless for real 3D)