Sample Texture 2D Array node

The Sample Texture 2D Array node samples a Texture 2D Array asset and returns a Vector 4 color value. You can specify the UV coordinates for a texture sample and use a Sampler State node to define a specific Sampler State. The node's Index input port specifies which index of a Texture 2D Array to sample.

For more information about Texture 2D Arrays, see Texture Arrays in the Unity User manual.

[!includenodes-sample-errors]

The Sample Texture 2D Array node is under the Input > Texture category in the Create Node menu.

Compatibility

The Sample Texture 3D [!includenodes-compatibility-all]

[!includenodes-sample-fragment-lod]

Inputs

The Sample Texture 3D [!includenodes-inputs]

[!include[nodes-sample-uv-table](./snippets/sample-nodes/nodes-sample-uv-table.md)] [!include[nodes-sample-ss-table](./snippets/sample-nodes/nodes-sample-ss-table.md)] [!include[nodes-sample-lod-table](./snippets/sample-nodes/nodes-sample-lod-table.md)] [!include[nodes-sample-mip-bias-table](./snippets/sample-nodes/nodes-sample-mip-bias-table.md)] [!include[nodes-sample-ddx-table](./snippets/sample-nodes/nodes-sample-ddx-table.md)] [!include[nodes-sample-ddy-table](./snippets/sample-nodes/nodes-sample-ddy-table.md)]

Name	Type	Binding	Description
Texture Array	Texture 2D Array	None	The Texture 2D Array asset to sample.
Index	Float	None	The index of the specific Texture in the Texture array to sample. The index value is the Texture's location in the Texture array. The index values in an array always start at 0. An array with four textures would have locations 0, 1, 2, and 3.

Additional node settings

The Sample Texture 3D [!includenodes-additional-settings]

[!includenodes-sample-mip-bias-sample-mode-table]

Outputs

The Sample Texture 3D [!includenodes-outputs]

[!includenodes-sample-rgba-output-table]

Example graph usage

In the following example, the Sample Texture 2D Array node samples a Texture array that has 4 different cloth normal maps. Change the number given to the Index port as an input, and the Sample Texture 2D Array node can sample a specific normal map from the array. The Index value changes the output the node sends to the Normal Unpack node, and the Normal (Tangent Space) Block node in the Master Stack.

Generated code example

[!includenodes-generated-code]:

float4 _SampleTexture2DArray_RGBA = SAMPLE_TEXTURE2D_ARRAY(Texture, Sampler, UV, Index);
float _SampleTexture2DArray_R = _SampleTexture2DArray_RGBA.r;
float _SampleTexture2DArray_G = _SampleTexture2DArray_RGBA.g;
float _SampleTexture2DArray_B = _SampleTexture2DArray_RGBA.b;
float _SampleTexture2DArray_A = _SampleTexture2DArray_RGBA.a;

[!includenodes-related] Sample Texture 3D node:

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