#543 Z-BUFFER: Graphics Glitch with DM2 Secret Button walking down hall

[Joseph Pecoraro]

At: https://github.com/ezQuake/ezquake-source/commit/c5fa88692bd9aae9ac3c275051ada9251b17b62b

See attached screenshots.

Graphics glitch with dm2 secret button running down the hall. Far enough down the hall the button is invisible. As you approach it flickers.

[Joseph Pecoraro]

As dimman suggested on IRC:

/gl_brush_polygonoffset 0

Fixes the issue.

[meag]

Caused by 16-bit z-buffer and poor r_nearclip/r_farclip values. Have also reversed (and reduced maximum values) of gl_brushmodel_polygonoffsetso that objects are pulled towards you, rather than pushed away (3.5-alpha12)