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One of the more '''CRT-Geom''' is a popular CRT shadersshader created by cgwg.
*[https://github.com/libretro/common-shaders/tree/master/crt/crt-interlaced-halation]
*[https://github.com/libretro/common-shaders/blob/master/crt/crt-geom-flat-sharpness.cg]
Removed dead links, and some updating
[[File:Retroarch_2013-07-22_17-21-17-60.png|thumb|298px|CRT-Geom-Flat, with default settings]]
==Download==
*[https://github.com/libretro/common-shaders/blob/master/crt/shaders/crt-geom-flat.cg CRT Geom flagcrt-geom.cg]
==Versions==
===Standard===
==Tweaking CRT Geom==
CRT Geom is highly customizable. You can open up CRT Geom the .cg file in [http://notepad-plus-plus.org/ notepadNotepad++] and edit it. Regular notepad will work, but notepadNotepad++ is recommended.
Shader parameters can be changed by editing the first value of the parameter at the beginning of the file, or through [[RetroArch]]'s shader menu.
[[File:Retroarch_2013-07-22_17-22-39-87.png|thumb|225px|CRT-Geom-Flat, with brighter scanlines]]
===Curvature===
'''old xml shader format only'''
To make it flat, just set cornersize (line 107) to 0.001 and cornersmooth (line 110) to 8000.0. Then, comment out (i.e., put two slashes in front of it, like this: // ) line 141, #define CURVATURE.
