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CRT shaders

323 bytes added, 12:46, 22 July 2013
Tweaking CRT Geom
to the following:<br />
ilfac = vec2(1.0,1.0);
===Phosphor===
To disable phosphor emulation (which alternately tints pixels green and magenta), comment out the following lines, found at the bottom of the shader code:
 
vec3 dotMaskWeights = mix(<br />vec3(1.0, 0.7, 1.0),<br />vec3(0.7, 1.0, 0.7),<br />floor(mod(mod_factor, 2.0))<br />);<br />mul_res *= dotMaskWeights;
===CRT Monitor variant===
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