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3
votes
1answer
707 views

Stencil mask with AlphaTestEffect

I am trying to pull off the following effect in XNA 4.0: http://eng.utah.edu/~brendanw/question.jpg The purple area has 50% opacity. I have gotten pretty close with the following code: public ...
1
vote
1answer
843 views

Clipping polygons in XNA with stencil (not using spritebatch)

The problem... i'm drawing polygons, in this case boxes, and i want clip children polygons with its parent's client area. // Class Region public void Render(GraphicsDevice Device, Camera ...
1
vote
0answers
232 views

Stencil buffer appears to not be decrementing values correctly

I'm attempting to use the stencil buffer as a clipper for my UI system, but I'm having trouble debugging a problem I'm running in to. This is what I'm doing: A widget can pass a rectangle to the the ...