/*
 * 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 Bool4ULURBLBR
<   namespace : "testing";
    vendor : "Apache";
    version : 1;
    description : "This accepts a bool4 as a parameter.  The appropriate corners will turn black when true.";
>
{
    parameter bool4 allBools;
    input image4 src;
    output pixel4 dst;

    void
    evaluatePixel()
    {
        float2 pos = outCoord();    
        float x = pos.x;
        float y = pos.y;
        bool upperLeft = allBools.x;
        bool upperRight = allBools.y;
        bool bottomLeft = allBools.z;
        bool bottomRight = allBools.w;

        dst.a = float(1);
        
        if(upperLeft && x < float(50) && y < float(50)){
            dst.r = float(0);
            dst.g = float(0);
            dst.b = float(0);
        }else if(upperRight && x > float(50) && y < float(50)){
            dst.r = float(0);
            dst.g = float(0);
            dst.b = float(0);
        }else if(bottomLeft && x < float(50) && y > float(50)){
            dst.r = float(0);
            dst.g = float(0);
            dst.b = float(0);
        }else if(bottomRight && x > float(50) && y > float(50)){
            dst.r = float(0);
            dst.g = float(0);
            dst.b = float(0);
        }else{
            dst.r = float(1);
            dst.g = float(1);
            dst.b = float(1);
        }
    }
}