/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
<languageVersion : 1.0;>

kernel Float4x4
<   namespace : "testing";
    vendor : "Apache";
    version : 1;
    description : "This accepts a float4x4 as a parameter, which sets shades of red, green, blue, and yellow.";
>
{
    input image4 src;
    output pixel4 dst;

    parameter float4x4 allFloats
    <
        minValue:float4x4(0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0);
        maxValue:float4x4(1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1);
        defaultValue:float4x4(0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0);
    >;

    void
    evaluatePixel()
    {
        float2 pos = outCoord();
        float x = pos.x;
        float y = pos.y;

        int4 box1bounds;
        int4 box2bounds;
        int4 box3bounds;
        int4 box4bounds;
        int4 box5bounds;
        int4 box6bounds;
        int4 box7bounds;
        int4 box8bounds;
        int4 box9bounds;
        int4 box10bounds;
        int4 box11bounds;
        int4 box12bounds;
        int4 box13bounds;
        int4 box14bounds;
        int4 box15bounds;
        int4 box16bounds;
        
        box1bounds.x = 0;    //minX
        box1bounds.y = 25;   //maxX
        box1bounds.z = 0;    //minY
        box1bounds.w = 25;   //maxY

        box2bounds.x = 26;   //minX
        box2bounds.y = 50;  //maxX
        box2bounds.z = 0;    //minY
        box2bounds.w = 25;   //maxY

        box3bounds.x = 51;    //minX
        box3bounds.y = 75;   //maxX
        box3bounds.z = 0;   //minY
        box3bounds.w = 25; //maxY

        box4bounds.x = 76;   //minX
        box4bounds.y = 100;  //maxX
        box4bounds.z = 0;   //minY
        box4bounds.w = 25;  //maxY

        box5bounds.x = 0;   //minX
        box5bounds.y = 25;  //maxX
        box5bounds.z = 26;   //minY
        box5bounds.w = 50;  //maxY
        
        box6bounds.x = 26;   //minX
        box6bounds.y = 50;  //maxX
        box6bounds.z = 26;   //minY
        box6bounds.w = 50;  //maxY
        
        box7bounds.x = 51;   //minX
        box7bounds.y = 75;  //maxX
        box7bounds.z = 26;   //minY
        box7bounds.w = 50;  //maxY
        
        box8bounds.x = 76;   //minX
        box8bounds.y = 100;  //maxX
        box8bounds.z = 26;   //minY
        box8bounds.w = 50;  //maxY
        
        box9bounds.x = 0;   //minX
        box9bounds.y = 25;  //maxX
        box9bounds.z = 51;   //minY
        box9bounds.w = 75;  //maxY

        box10bounds.x = 26;   //minX
        box10bounds.y = 50;  //maxX
        box10bounds.z = 51;   //minY
        box10bounds.w = 75;  //maxY
        
        box11bounds.x = 51;   //minX
        box11bounds.y = 75;  //maxX
        box11bounds.z = 51;   //minY
        box11bounds.w = 75;  //maxY
        
        box12bounds.x = 76;   //minX
        box12bounds.y = 100;  //maxX
        box12bounds.z = 51;   //minY
        box12bounds.w = 75;  //maxY
        
        box13bounds.x = 0;   //minX
        box13bounds.y = 25;  //maxX
        box13bounds.z = 76;   //minY
        box13bounds.w = 100;  //maxY
        
        box14bounds.x = 26;   //minX
        box14bounds.y = 50;  //maxX
        box14bounds.z = 76;   //minY
        box14bounds.w = 100;  //maxY
        
        box15bounds.x = 51;   //minX
        box15bounds.y = 75;  //maxX
        box15bounds.z = 76;   //minY
        box15bounds.w = 100;  //maxY
        
        box16bounds.x = 76;   //minX
        box16bounds.y = 100;  //maxX
        box16bounds.z = 76;   //minY
        box16bounds.w = 100;  //maxY

        dst.g = float(0);
        dst.b = float(0);
        dst.a = float(1) + sampleNearest(src, outCoord()).a - sampleNearest(src, outCoord()).a;
        
        if(x >= float(box1bounds.x) && x <= float(box1bounds.y) && y >= float(box1bounds.z) && y <= float(box1bounds.w)){
            dst.r = allFloats[0][0];
        }else if(x >= float(box2bounds.x) && x <= float(box2bounds.y) && y >= float(box2bounds.z) && y <= float(box2bounds.w)){
            dst.r = allFloats[0][1];
        }else if(x >= float(box3bounds.x) && x <= float(box3bounds.y) && y >= float(box3bounds.z) && y <= float(box3bounds.w)){
            dst.r = allFloats[0][2];
       }else if(x >= float(box4bounds.x) && x <= float(box4bounds.y) && y >= float(box4bounds.z) && y <= float(box4bounds.w)){
            dst.r = allFloats[0][3];
        }else if(x >= float(box5bounds.x) && x <= float(box5bounds.y) && y >= float(box5bounds.z) && y <= float(box5bounds.w)){
            dst.r = allFloats[1][0];
        }else if(x >= float(box6bounds.x) && x <= float(box6bounds.y) && y >= float(box6bounds.z) && y <= float(box6bounds.w)){
            dst.r = allFloats[1][1];
        }else if(x >= float(box7bounds.x) && x <= float(box7bounds.y) && y >= float(box7bounds.z) && y <= float(box7bounds.w)){
            dst.r = allFloats[1][2];
        }else if(x >= float(box8bounds.x) && x <= float(box8bounds.y) && y >= float(box8bounds.z) && y <= float(box8bounds.w)){
            dst.r = allFloats[1][3];
        }else if(x >= float(box9bounds.x) && x <= float(box9bounds.y) && y >= float(box9bounds.z) && y <= float(box9bounds.w)){
            dst.r = allFloats[2][0];
        }else if(x >= float(box10bounds.x) && x <= float(box10bounds.y) && y >= float(box10bounds.z) && y <= float(box10bounds.w)){
            dst.r = allFloats[2][1];
        }else if(x >= float(box11bounds.x) && x <= float(box11bounds.y) && y >= float(box11bounds.z) && y <= float(box11bounds.w)){
            dst.r = allFloats[2][2];
        }else if(x >= float(box12bounds.x) && x <= float(box12bounds.y) && y >= float(box12bounds.z) && y <= float(box12bounds.w)){
            dst.r = allFloats[2][3];
        }else if(x >= float(box13bounds.x) && x <= float(box13bounds.y) && y >= float(box13bounds.z) && y <= float(box13bounds.w)){
            dst.r = allFloats[3][0];
        }else if(x >= float(box14bounds.x) && x <= float(box14bounds.y) && y >= float(box14bounds.z) && y <= float(box14bounds.w)){
            dst.r = allFloats[3][1];
        }else if(x >= float(box15bounds.x) && x <= float(box15bounds.y) && y >= float(box15bounds.z) && y <= float(box15bounds.w)){
            dst.r = allFloats[3][2];
        }else if(x >= float(box16bounds.x) && x <= float(box16bounds.y) && y >= float(box16bounds.z) && y <= float(box16bounds.w)){
            dst.r = allFloats[3][3];
        }else{
            dst.r = float(0);
        }
    }
}