How do I use\implement light maps in a custom realtime reflection shader for mobile?

Graphics Shaders & Materials
1

Hey there is there someone who can help me with this shader? i want to make an reflectiv material
Something like this but for static objects that have lightmaps .

800×450 161 KB

here is the shader that i have:

Shader “Mobile/PlanarReflection”
{
Properties
{
_MainAlpha(“MainAlpha”, Range(0, 1)) = 1
_ReflectionAlpha(“ReflectionAlpha”, Range(0, 1)) = 1
_MainTex (“MainTex (RGBA)”, 2D) = “”
[HideInInspector]_ReflectionTex (“ReflectionTex”, 2D) = “white” { TexGen ObjectLinear }
}

Subshader
{

CGPROGRAM
#pragma surface surf Lambert

float _MainAlpha;
float _ReflectionAlpha;
sampler2D _MainTex;
sampler2D _ReflectionTex;

struct Input
{
float2 uv_MainTex;
float4 screenPos;
};

void surf(Input IN, inout SurfaceOutput o)
{

fixed4 main_Tex = tex2D(_MainTex, IN.uv_MainTex);

o.Albedo = main_Tex.rgb * _MainAlpha;

o.Emission = tex2D(_ReflectionTex, IN.screenPos.xy / IN.screenPos.w).rgb * _ReflectionAlpha * main_Tex.a;

}
ENDCG
}

Fallback “Diffuse”

}

2

this is a surface shader, it already supports lightmaps. Lower your _ReflectionAlpha value and you should be able to see if if it’s correctly baked.

3

Hmm indeed it does but the reflection not is not showing on the mobile build o.O

4

  1. Planar Reflection:
    Planar Reflection with alpha - Unity Engine - Unity Discussions

  2. Realtime or baked Reflection probes (Standard shader):