BoatAttack/Packages/com.unity.shadergraph/Documentation~/Checkerboard-Node.md

Checkerboard Node

Description

Generates a checkerboard of alternating colors between inputs Color A and Color B based on input UV. The checkerboard scale is defined by input Frequency.

Ports

Name	Direction	Type	Binding	Description
UV	Input	Vector 2	UV	Input UV value
Color A	Input	Color RGB	None	First checker color
Color B	Input	Color RGB	None	Second checker color
Frequency	Input	Vector 2	None	Scale of checkerboard per axis
Out	Output	Vector 2	None	Output UV value

Generated Code Example

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

void Unity_Checkerboard_float(float2 UV, float3 ColorA, float3 ColorB, float2 Frequency, out float3 Out)
{
    UV = (UV.xy + 0.5) * Frequency;
    float4 derivatives = float4(ddx(UV), ddy(UV));
    float2 duv_length = sqrt(float2(dot(derivatives.xz, derivatives.xz), dot(derivatives.yw, derivatives.yw)));
    float width = 1.0;
    float2 distance3 = 4.0 * abs(frac(UV + 0.25) - 0.5) - width;
    float2 scale = 0.35 / duv_length.xy;
    float freqLimiter = sqrt(clamp(1.1f - max(duv_length.x, duv_length.y), 0.0, 1.0));
    float2 vector_alpha = clamp(distance3 * scale.xy, -1.0, 1.0);
    float alpha = saturate(0.5f + 0.5f * vector_alpha.x * vector_alpha.y * freqLimiter);
    Out = lerp(ColorA, ColorB, alpha.xxx);
}