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===Sharpness[[File:Retroarch_2013-07-22_19-24-11-41.png|thumb|298px|CRT-Geom-Flat, at 2x sharpness]]=== If you find the shader looks too blurry, you can increase the sharpness by going to the sections in the code that have the following lines (should be at the beginning of both the vertex and fragment portions of the shader code):
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Raise the 0.3 to a higher value to make the scanlines brighter. I do not recommend going past 0.4, as at that point on bright colors scanlines completely disappear, and going further makes them appear again, but on the wrong field in said bright colors, which is inaccurate. Try 0.35.
===Sharpness===
uniform vec2 rubyInputSize;
uniform vec2 rubyTextureSize;
