ProjectArcade

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// Simple Bloom shader; created to use in PPSSPP.
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// Without excessive samples and complex nested loops
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// (to make it compatible with low-end GPUs and to ensure ps_2_0 compatibility).
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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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  vec4 sum = vec4(0);
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  vec3 bloom;
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  for(int i= -3 ;i < 3; i++)
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  {
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    sum += texture2D(sampler0, v_texcoord0 + vec2(-1, i)*0.004) * u_setting.x;
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    sum += texture2D(sampler0, v_texcoord0 + vec2(0, i)*0.004) * u_setting.x;
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    sum += texture2D(sampler0, v_texcoord0 + vec2(1, i)*0.004) * u_setting.x;
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  }
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  if (color.r < 0.3 && color.g < 0.3 && color.b < 0.3)
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  {
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    bloom = sum.xyz*sum.xyz*0.012 + color;
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  }
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  else
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  {
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    if (color.r < 0.5 && color.g < 0.5 && color.b < 0.5)
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      {
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         bloom = sum.xyz*sum.xyz*0.009 + color;
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      }
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    else
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      {
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        bloom = sum.xyz*sum.xyz*0.0075 + color;
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      }
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  }
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  bloom = mix(color, bloom, u_setting.y);
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  gl_FragColor.rgb = bloom;
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  gl_FragColor.a = 1.0;
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}
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