ProjectArcade

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// Natural Vision Shader, modified to use in PPSSPP.
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// by ShadX (Modded by SimoneT)
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// http://forums.ngemu.com/showthread.php?t=76098
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#ifdef GL_ES
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precision mediump float;
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precision mediump int;
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#endif
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uniform sampler2D sampler0;
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varying vec2 v_texcoord0;
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const mat3 RGBtoYIQ = mat3(0.299, 0.596, 0.212, 
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                           0.587,-0.275,-0.523, 
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                           0.114,-0.321, 0.311);
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const mat3 YIQtoRGB = mat3(1.0, 1.0, 1.0,
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                           0.95568806036115671171,-0.27158179694405859326,-1.1081773266826619523,
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                           0.61985809445637075388,-0.64687381613840131330, 1.7050645599191817149);
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const vec3 val00 = vec3( 1.2, 1.2, 1.2);
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void main()
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{
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vec3 c0,c1;
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c0 = texture2D(sampler0,v_texcoord0).xyz;
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c1=RGBtoYIQ*c0;
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c1=vec3(pow(c1.x,val00.x),c1.yz*val00.yz);
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gl_FragColor.rgb=YIQtoRGB*c1;
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gl_FragColor.a = 1.0;
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}
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