Hello there,
i’m not that familiar with shaders and have stumbled upon a difficulty, what i would like is for the center of the texture to be transparent but the outline to be visible as seen in the image below (im using a unlit transparent shader)
I got this far but i would like to be able to change the color of that border at runtime and have not been able to figure out how; I did try getting the render and using
material.color = myColour;
but this failed. Any help would be much appreciated,
-Red_Heart.
// Unlit alpha-blended shader.
// - no lighting
// - no lightmap support
Shader "Unlit/Transparent Color" {
Properties {
_Color ("Color", Color) = (1,1,1,1)
_MainTex ("Base (RGB) Trans (A)", 2D) = "white" {}
}
SubShader {
Tags {"Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent"}
LOD 100
ZWrite Off
Blend SrcAlpha OneMinusSrcAlpha
Pass {
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#pragma target 2.0
#pragma multi_compile_fog
#include "UnityCG.cginc"
struct appdata_t {
float4 vertex : POSITION;
float2 texcoord : TEXCOORD0;
UNITY_VERTEX_INPUT_INSTANCE_ID
};
struct v2f {
float4 vertex : SV_POSITION;
float2 texcoord : TEXCOORD0;
UNITY_FOG_COORDS(1)
UNITY_VERTEX_OUTPUT_STEREO
};
sampler2D _MainTex;
float4 _MainTex_ST;
fixed4 _Color;
v2f vert (appdata_t v)
{
v2f o;
UNITY_SETUP_INSTANCE_ID(v);
UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
o.vertex = UnityObjectToClipPos(v.vertex);
o.texcoord = TRANSFORM_TEX(v.texcoord, _MainTex);
UNITY_TRANSFER_FOG(o,o.vertex);
return o;
}
fixed4 frag (v2f i) : SV_Target
{
fixed4 col = tex2D(_MainTex, i.texcoord) * _Color;
UNITY_APPLY_FOG(i.fogCoord, col);
return col;
}
ENDCG
}
}
}
This is the built-in Unlit/Transparent shader with colour support. Create a new shader and paste this inside.
