I use a keyboard/mouse shortcut for changing size and hardness of my brush tool: 'CTRL + ALT + left mouse click'. If I then move with my mouse horizontally or vertically, size and hardness can be modified (during this, a red dot appears where my cursor is, indicating size and hardness).
My problem: from time to time, my cursur makes a 'jump' after I used this shortcut, so that my cursor indicator does not correspond anymore to the place where I'm actually brushing (it's a an inch or so away from it). If I then want to select another tool (left side of the screen), I also cannot press the other tool buttons (again, because cursor indicator and actual cursor location do not correspond). Only when I move my cursor even further 'off the screen', the cursor makes another jump so that I can select other tool buttons (cursor indicator and actual cursor location are the same again). Same happens when I want to select functions via the menu on the upper side of the screen (e.g. saving a file).
Does anyone know why this happens?
Thanks a lot,
I've not seen this personally but I do sense that the brush sizing process stresses the OpenGL implementation in the display driver in special ways, so I suggest that you visit the web site of the maker of your video card and download/install the latest display driver released for your hardware and OS version. Display driver updates correct many problems.
Yeah, the brush sizing uses overlays and shaders pretty hard, which stresses some cards/drivers.