How do I create a shader for my game?

How do I create a shader for my game?

Creating a shader involves writing code that defines how surfaces interact with light. Are you using a specific game engine?

Yes, I'm using Unity. What language should I use?

In Unity, you can use ShaderLab along with HLSL for writing shaders. Would you like a simple example?

Yes, please! A basic example would be great.

Here's a simple unlit shader example:

Shader "Custom/SimpleUnlit"
{
    Properties {
        _Color ("Color", Color) = (1,1,1,1)
    }
    SubShader {
        Pass {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #include "UnityCG.cginc"

            struct appdata_t {
                float4 vertex : POSITION;
            };

            struct v2f {
                float4 pos : SV_POSITION;
            };

            v2f vert(appdata_t v) {
                v2f o;
                o.pos = UnityObjectToClipPos(v.vertex);
                return o;
            }

            fixed4 frag(v2f i) : SV_Target {
                return _Color;
            }
            ENDCG
        }
    }
}

This shader simply colors the object with a solid color.