Hi,

Using my PC, an unexpected result occurs in Processing.
Until size (500,500), everything  is okay, but more size (eg, size (500, 600)) will not be expected to result,
like the screen is divided into tiles, or flickers.

I don't know whether my PC-specific issues.
Is there anyone who knows the cause ?

My environment:
Processing 1.2.1
Microsoft Windows XP Professional 5.1 built 2600
NVIDIA Quadro FX 580
DirectX 9.0c
Java 2 Runtime Environment, SE v1.4.2_12
Java(TM) 6 Update 22