Compute shader issue (.compute)

.compute

#pragma kernel StartKernel
#pragma kernel StepKernel

RWTexture2D<float4> _outTex;
RWTexture2D<float4> _inTex;

float hash(float2 uv)
{
   return sin(dot(float2(49104.3, 13059.2), uv));
}

float Random(float2 uv)
{
    float seed = hash(uv);
    
    float x = frac(seed * 19204.3);
    
    return float(x);
}

[numthreads(8, 8, 1)]
void StartKernel (uint3 id : SV_DispatchThreadID)
{
    float _random = Random(id.xy);
    
    _inTex[id.xy] = float4(_random.rrr,1);
}

[numthreads(8, 8, 1)]
void StepKernel(uint3 id : SV_DispatchThreadID)
{
    _outTex[id.xy] = _inTex[id.xy];
}