sampler2d

Here is the syntax for a sampler in Direct3D 9.

sampler Name = SamplerType{   Texture = <texture_variable>;   [state_name = state_value;]   ... };

 

hlsl里面

sampler  XXXsampler= sampler2D{

 

　texture=.....;

AddressU=

AddressV=

AddressW=

BorderColor=

Filter=

MaxAnisotropy=

MaxLOD=

MinLOD=

MipLODBias=

 

}

 

sampler MeshTextureSampler =

sampler_state

{

    Texture = <g_MeshTexture>;

    MipFilter = LINEAR;

    MinFilter = LINEAR;

    MagFilter = LINEAR;

};

 

DX10

SamplerState MeshTextureSampler

{

    Filter = MIN_MAG_MIP_LINEAR;

    AddressU = Wrap;

    AddressV = Wrap;

};

SamplerComparisonState ShadowSampler

{

   // sampler state

   Filter = COMPARISON_MIN_MAG_LINEAR_MIP_POINT;

   AddressU = MIRROR;

   AddressV = MIRROR;

   // sampler comparison state

   ComparisonFunc = LESS;

};

float3 vModProjUV;

  ...

float fShadow = g_ShadowMap.SampleCmpLevelZero( ShadowSampler, vModProjUV.xy, vModProjUV.z);

http://msdn.microsoft.com/en-us/library/windows/desktop/bb509644(v=vs.85).aspx