layout(rgba8, binding = 0) uniform image2D imgOutput;

uniform sampler2D inputTexture;
layout( location=0 ) uniform vec2 invResolution;
uniform sampler2D samplerBlend;

void main() {
    vec2 loc = ivec2(gl_GlobalInvocationID.x * 4, gl_GlobalInvocationID.y * 4);
    for(int i = 0; i < 4; i++)
    {
        for(int j = 0; j < 4; j++)
        {
            ivec2 texelCoord = ivec2(loc.x + i, loc.y + j);
            vec2 coord = (texelCoord + vec2(0.5)) / invResolution;
            vec2 pixCoord;
            vec4 offset;
            
            SMAANeighborhoodBlendingVS(coord, offset);

            vec4 oColor = SMAANeighborhoodBlendingPS(coord, offset, inputTexture, samplerBlend);

            imageStore(imgOutput,  texelCoord, oColor);
        }
    }

}