// Each #kernel tells which function to compile; you can have many kernels
#pragma kernel CSMain

// Create a RenderTexture with enableRandomWrite flag and set it
// with cs.SetTexture

struct TerrainPosition
{
	int terrainID;
	uint2 min;
    uint2 max;
    int affected;
};


Texture2D<float4> Input;
RWStructuredBuffer<TerrainPosition>outputBuffer;
float fitnessThreshold;
int testInt;
int numberOfTerrains = 0;

[numthreads(8,8,1)]
void CSMain (uint3 id : SV_DispatchThreadID)
{
    if(Input[id.xy].r>fitnessThreshold)
    {
        for(int i=0;i<numberOfTerrains;i++)
        {
            TerrainPosition currentPos = outputBuffer[i];
            if( id.x >= currentPos.min.x && 
                id.y >= currentPos.min.y &&
                id.x <= currentPos.max.x && 
                id.y <= currentPos.max.y )
                {
                    outputBuffer[i].affected = 1;
                }
        }
    }
}