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@elringus
Created August 17, 2020 11:13
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Shader "Custom/UnlitAlphaRotation"
{
Properties
{
_MainTex("Base (RGB) Trans (A)", 2D) = "white" {}
_RotationY("Rotation over Y-axis", Range(0, 360)) = 45
}
SubShader
{
Tags
{
"Queue" = "Transparent"
"IgnoreProjector" = "True"
"RenderType" = "Transparent"
}
LOD 100
ZWrite Off
Blend SrcAlpha OneMinusSrcAlpha
Pass
{
CGPROGRAM
#include "UnityCG.cginc"
#pragma vertex vert
#pragma fragment frag
#pragma target 2.0
#pragma multi_compile_fog
sampler2D _MainTex;
float4 _MainTex_ST;
float _RotationY;
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
};
float4 RotateAroundYInDegrees(float4 vertex, float degrees)
{
float alpha = degrees * UNITY_PI / 180.0;
float sina, cosa;
sincos(alpha, sina, cosa);
float2x2 m = float2x2(cosa, -sina, sina, cosa);
return float4(mul(m, vertex.xz), vertex.yw).xzyw;
}
v2f vert(appdata_t v)
{
v2f o;
UNITY_SETUP_INSTANCE_ID(v);
UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
o.vertex = UnityObjectToClipPos(v.vertex);
o.vertex = RotateAroundYInDegrees(o.vertex, _RotationY);
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);
UNITY_APPLY_FOG(i.fogCoord, col);
return col;
}
ENDCG
}
}
}
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