|I have run into a dead end in another OpenGL forum.
I have a basic understanding how (OpenGL) stencilling works.
My stencil is in 2D , no depths.
I am extracting a (circular) part of OpenGL objects, no problem.
I am trying to further manipulate the stencil result.
The task is to enlarge the result and move it to the center of the screen.
I used glTranslatef but it moves the original stencil, not the result. I want to move the result only.
I think my issue is that the stencil was build in "top of the modleview matrix" ( no push /pop) and the objects to be stencilled are in various matrix "stack" - used push / pop.
I understand the "result" is in color buffer, but it sure looks as I am manipulating the stencil buffer, which has been already disabled.
Am I correct in all this?
Do I have to rebuild all on SAME matrixview stack level ?
I am sorry if I am not using correct OpenGL terminology.