dolphin/Data/User/Shaders/mad_world.txt

uniform sampler2D samp9;

out vec4 ocol0;
in vec2 uv0;

uniform vec4 resolution;

void main()
{
  float4 emboss = (texture(samp9, uv0+resolution.zw) - texture(samp9, uv0-resolution.zw))*2.0;
  emboss -= (texture(samp9, uv0+float2(1,-1)*resolution.zw).rgba - texture(samp9, uv0+float2(-1,1)*resolution.zw).rgba);
  float4 color = texture(samp9, uv0).rgba;
  if (color.r > 0.8 && color.b + color.b < 0.2)
    ocol0 = float4(1,0,0,0);
  else {
    color += emboss;
    if (dot(color.rgb, float3(0.3, 0.5, 0.2)) > 0.5)
      ocol0 = float4(1,1,1,1);
    else
      ocol0 = float4(0,0,0,0);
  }
}