neercs/neercs/video/mirror.lolfx

[vert.glsl]

#version 120

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

[frag.glsl]

#version 120

uniform sampler2D texture;
uniform vec2 screen_size;
uniform vec4 mirror;

void main(void)
{
    vec2 p = gl_TexCoord[0].xy;
    vec3 source = texture2D(texture, p).xyz;

    vec3 color = vec3(0.0);
    if(p.x < mirror.x) color = (texture2D(texture, vec2(mirror.x - (1.0 - mirror.x * mirror.w + p.x * mirror.w), p.y)).xyz) * (mirror.z / mirror.x * p.x);
    if(p.x > 1.0 - mirror.x) color = (texture2D(texture, vec2(mirror.x - (1.0 - mirror.x * mirror.w + p.x * mirror.w), p.y)).xyz) * (mirror.z / mirror.x * (1.0 - p.x));

    gl_FragColor = vec4(source + color, 1.0);
}