StructuredBuffer<float> DataBuffer : register(t0);
RWByteAddressBuffer ResultDataBuffer : register(u0);
cbuffer InfoBuffer : register(b0)
{
	float4 Color;
    uint PlotIndex;
	float Interval;
    uint DataStartIndex;
	uint PlotDataLenght;
}
void InterlockedMaxFloat(RWByteAddressBuffer buf, uint addr, float value)
{
    uint i_val = asuint(value);
    uint tmp0 = 0;
    uint tmp1;
    buf.InterlockedMax(addr, i_val, tmp1);
}
void InterlockedMinFloat(RWByteAddressBuffer buf, uint addr, float value)
{
    uint i_val = asuint(value);
    uint tmp1;
    buf.InterlockedMin(addr, i_val, tmp1);
}
void InterlockedCompareExchangeFloat(RWByteAddressBuffer buf, uint addr, float value)
{
    uint i_val = asuint(value);
    uint tmp0 = 0;
    uint tmp1;
    buf.InterlockedCompareExchange(addr, tmp0, i_val, tmp1);
}
[numthreads(1000, 1, 1)]

void main(uint3 DTid : SV_DispatchThreadID)
{
    float value = DataBuffer[DTid.x + PlotIndex * PlotDataLenght];
    if (DTid.x >= DataStartIndex-1)
    {
        return;
    }
    if (DTid.x == 0)
    {
        InterlockedCompareExchangeFloat(ResultDataBuffer, PlotIndex * 8, value);
        InterlockedCompareExchangeFloat(ResultDataBuffer, PlotIndex * 8 + 4, value);
        return;
    }
    InterlockedMaxFloat(ResultDataBuffer, PlotIndex * 8, value);
    InterlockedMinFloat(ResultDataBuffer, PlotIndex * 8 + 4, value);
}