frame buffer object access.

[wiseun]

I have some question about frame buffer object.

I want to get the current displayed image data at frame buffer.

Well… I know about “glReadPixel” function.

But I want to progress all process at GPU.

So “glReadPixel” function is not proper in my case.

Do you have any solution?

Ps. I am not skillful english. Please understand.

[Simon_Green]

Have a look at the “postProcessGL” sample in the SDK.

Doing “glReadPixels” into a pixel buffer object (PBO) only performs a copy in GPU memory (it doesn’t read back to the CPU), so it is efficient.

[wiseun]

Thank you.