cube-game-plus-plus/shader/postFragment.fs

#version 430

layout (binding = 1) uniform sampler2D samp;
layout (binding = 2) uniform sampler2D depth;

in vec2 tc;
out vec4 color;

const float offset = 3.0 / 300.0;

void main(void)
{
    /*vec2 offsets[8] = vec2[](
        vec2(-offset,  offset), // top-left
        vec2( 0.0f,    offset), // top-center
        vec2( offset,  offset), // top-right
        vec2(-offset,  0.0f),   // center-left
        //vec2( 0.0f,    0.0f),   // center-center
        vec2( offset,  0.0f),   // center-right
        vec2(-offset, -offset), // bottom-left
        vec2( 0.0f,   -offset), // bottom-center
        vec2( offset, -offset)  // bottom-right    
    );
    
    float d = texture(depth, tc).r;

    float c = 0;
    for(int i = 0; i < 8; i++)
    {
        //c += float(d < texture(depth, tc + offsets[i]).r);
        c += d - texture(depth, tc + offsets[i]).r;
    }

    c *= 100;
    
    color = vec4(c, c, c, 1.0);*/
    //color = texture(samp, tc) * c;
    color = texture(samp, tc);
}