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Texture Type

Use the following syntax to declare a texture variable.

Type Name;

 

Parameters

ItemDescription

Type

One of the following types: texture (untyped, for backwards compatibility), Texture1D, Texture1DArray, Texture2D, Texture2DArray, Texture3D, TextureCube. The element size must fit into 4 32-bit quantities.

Name

An ASCII string that uniquely identifies the variable name.

 

Remarks

There are three parts to using a texture.

  1. Declaring a texture variable. This is done with the syntax shown above. For example, these are valid declarations.

    
    texture g_MeshTexture;
    
    

    - or -

    
    Texture2D g_MeshTexture;
    
    
  2. Declaring and initializing a sampler object. This is done with slightly different syntax in Direct3D 9 and Direct3D 10. For details about sampler object syntax, see Sampler Type (DirectX HLSL).
  3. Invoking a texture function in a shader.

Differences between Direct3D 9 and Direct3D 10:

Direct3D 9 uses intrinsic texture functions to perform texture operations. This example is from the BasicHLSL Sample and uses tex2D(s, t) (DirectX HLSL) to perform texture sampling.


Output.RGBColor = tex2D(MeshTextureSampler, In.TextureUV) * In.Diffuse;

Direct3D 10 uses templated texture objects instead. Here is an example of the equivalent texture operation. This example is from the BasicHLSL10 Sample and uses the sample texture-object function.


Output.RGBColor = g_MeshTexture.Sample(MeshTextureSampler, In.TextureUV) * In.Diffuse;

 

See also

Data Types (DirectX HLSL)

 

 

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