Firstborn/Library/PackageCache/com.unity.shadergraph@12.1.11/Documentation~/Sample-Texture-2D-Array-Node.md

Sample Texture 2D Array Node

Description

Samples a Texture 2D Array and returns a Vector 4 color value for use in the shader. You can override the UV coordinates using the UV input and define a custom Sampler State using the Sampler input. Use the Index input to specify which index of the array to sample.

If you experience texture sampling errors while using this node in a graph which includes Custom Function Nodes or Sub Graphs, you can resolve them by upgrading to version 10.3 or later.

NOTE: This Node can only be used in the Fragment shader stage.

Ports

Name	Direction	Type	Binding	Description
Texture Array	Input	Texture 2D Array	None	Texture 2D Array to sample
Index	Input	Float	None	Index of array to sample
UV	Input	Vector 2	UV	UV coordinates
Sampler	Input	Sampler State	Default sampler state	Sampler for the texture
RGBA	Output	Vector 4	None	Output value as RGBA
R	Output	Float	None	red (x) component of RGBA output
G	Output	Float	None	green (y) component of RGBA output
B	Output	Float	None	blue (z) component of RGBA output
A	Output	Float	None	alpha (w) component of RGBA output

Controls

Name	Type	Options	Description
Enable Global Mip Bias	Toggle	On, Off	Enables the global mipmap bias that Unity automatically imposes at runtime. Unity sets this bias during certain dynamic resolution scaling algorithms to improve detail reconstruction.

Generated Code Example

The following example code represents one possible outcome of this node.

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;