koobas.hobune.stream
How to make the Shader combines two alpha textures ?
hi, i'm using this shader to combine two alpha textures so this is the result:
the blue one is the main texture, the red lines are the second texture
is there anyway to make the red lines cover the blue part only?
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this is the shader i'm using:
Shader "Custom/testshader" {
Properties {
_Color ("Main Color", Color) = (1,1,1,1)
_MainTex ("Base (RGB) Trans (A)", 2D) = "white" {}
_BlendTex ("_BlendTex", 2D) = "white" {}
_Blend1 ("Blend between Base and Blend 1 textures", Range (0, 1) ) = 0
}
SubShader {
Tags { "Queue"="Geometry-9" "IgnoreProjector"="True" "RenderType"="Transparent" }
Lighting Off
LOD 200
Blend SrcAlpha OneMinusSrcAlpha
CGPROGRAM
#pragma surface surf Lambert alpha:fade
sampler2D _MainTex;
fixed4 _Color;
sampler2D _BlendTex;
float _Blend1;
struct Input {
float2 uv_MainTex;
float2 uv_BlendTex;
};
void surf (Input IN, inout SurfaceOutput o)
{
fixed4 mainCol = tex2D(_MainTex, IN.uv_MainTex) * _Color;
fixed4 texTwoCol = tex2D(_BlendTex, IN.uv_BlendTex);
fixed4 mainOutput = mainCol.rgba * (1.0 - (texTwoCol.a * _Blend1));
fixed4 blendOutput = texTwoCol.rgba * texTwoCol.a * _Blend1;
o.Albedo = mainOutput.rgb + blendOutput.rgb;
o.Alpha = mainOutput.a + blendOutput.a;
}
ENDCG
}
Fallback "Custom/testshader"
}
