public void SamplerStateTestHashCollision()
{
var samA = new SamplerStateDescription()
{
Filter = TextureFilter.MinMagLinearMipPoint
};
var samB = new SamplerStateDescription()
{
Filter = TextureFilter.MinMagLinear
};
var hashA = samA.GetHashCode();
var hashB = samB.GetHashCode();
Report.Line("SamA={0}, SamB={1}", samA, samB);
Report.Line("HashA={0}, HashB={1}", hashA, hashB);
Report.Line("Equal={0}", Object.Equals(samA, samB));
if (hashA == hashB)
{
Report.Line("BAD HASH :(");
}
else
{
Report.Line("Good Hash :)");
}
}
public SamplerState CreateSamplerState(TextureAddressMode texMode, Filter filter,
Comparison comparisonFunction = Comparison.Never, int aniso = 1, float minLod = 0.0f, float maxLod = float.MaxValue)
{
var samplerStateDescription = new SamplerStateDescription {
AddressU = texMode,
AddressV = texMode,
AddressW = texMode,
Filter = filter,
ComparisonFunction = comparisonFunction,
MinimumLod = minLod,
MaximumLod = maxLod,
MaximumAnisotropy = Math.Max(1, aniso),
};
var hash = samplerStateDescription.GetHashCode();
if (samplerStates.ContainsKey(hash))
{
return(samplerStates[hash]);
}
var sampler = new SamplerState(Device, samplerStateDescription);
if (sampler != null)
{
samplerStates.Add(hash, sampler);
}
return(sampler);
}
