ProjectArcade

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// Simple sharpen shader; created to use in PPSSPP
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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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uniform vec4 u_setting;
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void main()
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{
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  vec3 color = texture2D(sampler0, v_texcoord0.xy).xyz;
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  color -= texture2D(sampler0, v_texcoord0.xy+0.0001).xyz*7.0*u_setting.x;
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  color += texture2D(sampler0, v_texcoord0.xy-0.0001).xyz*7.0*u_setting.x;
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  gl_FragColor.rgb = color;
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}
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