Lars Berg

No problem, here is the fragment shader. This is still pretty rough and i'm sure it can be optimized.
I'd like to explore QC a bit more i really like the node based interface.

uniform sampler2D sampler0;
const int NUM_SAMPLES = 10 ;
const int NUM_ROT = 9 ;

uniform sampler2D tex, depthTex;

void main(){
    vec4 color, sampCol, d;
    d = texture2D(depthTex, gl_TexCoord[1].st);
    color = texture2D(tex, gl_TexCoord[0].st);  
   
    float step = 360.0/float(NUM_ROT);
    float sampCount = 1.0;
    float blurDist =  float(NUM_SAMPLES) * 1.85 * d.z/float(NUM_SAMPLES);
       
    for(int i=0; i < NUM_ROT; i++){
        vec2 offset = vec2( sin(step * float(i))/1280.0, cos(step * float(i))/720.0);
        for ( int j=1; j< int(float(NUM_SAMPLES + 1) * d.z); j++)
        {
            vec2 texCoord = gl_TexCoord[0].st + offset*float(j) * blurDist;
            vec4 depthSamp = texture2D(depthTex, texCoord);           
            sampCol = texture2D(sampler0, texCoord);               
            float tempVal = min(d.z, depthSamp.z);

            tempVal *= 1.0 - pow(float(j)/float(NUM_SAMPLES), 4.0);
            color += sampCol * tempVal;
            sampCount += tempVal;                       
        }
    }       
    color /= sampCount;   
                  
    gl_FragColor = vec4(vec3(color), 1.0);
}

let me know if you have any suggestions/questions.

LB