neercs/neercs/video/postfx.lolfx

-- GLSL.Vert --

#version 120

void main()
    {
    gl_Position=gl_Vertex;
    gl_TexCoord[0]=gl_MultiTexCoord0;
    }

-- GLSL.Frag --

#version 120

uniform sampler2D texture;
uniform vec2 screen_size;
uniform float time;
uniform vec2 deform;
uniform vec4 ghost1;
uniform vec4 ghost2;
uniform float vignetting;
uniform float aberration;
uniform vec4 moire_h;
uniform vec4 moire_v;
uniform vec4 scanline_h;
uniform vec4 scanline_v;
uniform vec3 corner;
uniform float sync;
uniform float beat;

vec2 screen(in vec2 p,in float radius)
    {
    float d=deform.x+sync*0.0625+beat*0.0375;
    return p*(1.5-(radius*cos(p.x*d)+radius*cos(p.y*d)))-0.5;
    }

vec3 get_color(in sampler2D tex,in vec2 p)
    {
    return texture2D(tex,clamp(p,-1.0,0.0)).xyz;
    }

float letterbox(in vec2 p,in float w,in float radius,in float smooth)
    {
    return 1.0-smoothstep(smooth,1.0,length(max(abs(p*w+w/2.0)-vec2(radius),0.0))+radius);
    }

void main(void)
    {
    vec2 q=gl_FragCoord.xy/screen_size.xy;
    vec2 p=-1.0+2.0*gl_FragCoord.xy/screen_size.xy;
    p.y+=0.025*sync;
    vec2 z=screen(p,deform.y);
    vec2 z1=screen(p,deform.y+ghost1.z*0.01);
    vec2 z2=screen(p,deform.y+ghost2.z*0.01);
    float mask=q.x*(6.0-q.x*6.0)*q.y*(6.0-q.y*6.0);

    vec3 source=get_color(texture,z);
    vec3 g1=get_color(texture,z1-ghost1.xy);
    vec3 g2=get_color(texture,z2-ghost2.xy);

    vec3 c=source+g1*ghost1.w+g2*ghost2.w;                   // mix

    float v=aberration/float(screen_size.x);//+aberration/float(screen_size.x)*(2.0-mask);
    vec3 ca1=get_color(texture,vec2(z.x-v,z.y));
    vec3 ca2=get_color(texture,vec2(z.x+v,z.y));
    c+=vec3(ca1.x,c.y,ca2.z);                                // chromatic aberration

    c*=moire_h.x+moire_h.y*sin(z.y*float(screen_size.y*moire_h.z))*sin(0.5+z.x*float(screen_size.x*moire_h.w)); // moire h
    c*=moire_v.x+moire_v.y*sin(z.x*float(screen_size.x*moire_v.z))*sin(0.5+z.y*float(screen_size.y*moire_v.w)); // moire v
    c*=scanline_h.x+scanline_h.y*cos(z.y*float(screen_size.y*scanline_h.z+scanline_h.w)); // scanline h
    c*=scanline_v.x+scanline_v.y*cos(z.x*float(screen_size.x*scanline_v.z+scanline_v.w)); // scanline v
    c*=mix(1.0,mask,vignetting);                             // vignetting
    c*=letterbox(z,corner.x+2.0,corner.y,corner.z);          // corner
    gl_FragColor=vec4(c,1.0);
    }