Hi,
I am trying to implement an Unwrap Shader which writes the results to a render target including the ’ Shadow ’ Information . I managed to get the unwrap working in screen space however how Can I add the shadow / lighting to this, I would greatly appreciate any help!
Unwrap code
Shader "Custom/NewShader1"
{
Properties
{
_Color ("Main Colour", Color ) = (1,1,1,0)
_ShadowTex ("Cookie", 2D) = "gray" { TexGen ObjectLinear }
_BaseTexture ("Base Texture", 2D) = "white" {}
}
SubShader
{
Tags {"Queue" = "Geometry" "RenderType" = "Opaque"}
Pass
{
Tags {"LightMode" = "ForwardBase"}
// ZWrite Off
// Offset -1, -1
// AlphaTest Greater 0
// Blend SrcAlpha OneMinusSrcAlpha
CGPROGRAM
#pragma vertex vert_main
#pragma fragment frag_main
#pragma multi_compile_fwdbase
#pragma target 3.0
#pragma fragmentoption ARB_precision_hint_fastest
#pragma fragmentoption ARB_fog_exp2
#include "UnityCG.cginc"
#include "AutoLight.cginc"
sampler2D _ShadowTex = sampler_state
{
Texture = <_ShadowText>;
AddressU = CLAMP;
AddressV = CLAMP;
};
sampler2D _BaseTexture;
float4x4 _Projector;
float4 _Color;
fixed4 _LightColor0;
struct Output_Struct {
float4 position : SV_POSITION;
float4 texcoord : TEXCOORD0;
float4 normalProj : TEXCOORD1;
float2 basecoord : COLOR0;
LIGHTING_COORDS(3,4)
};
Output_Struct vert_main (appdata_tan v)
{
Output_Struct OUT;
OUT.position .xy = v.texcoord.xy * 2.0 - 1.0;
// OUT.position .xy = mul( UNITY_MATRIX_MVP, v.vertex);
TANGENT_SPACE_ROTATION;
// flip Y, UV are upside down, for some reason
// this is needed
OUT.position .y *= -1;
OUT.position .z = 0;
OUT.position .w = 1;//v.vertex.w;
OUT.texcoord = mul(_Projector, v.vertex);
OUT.basecoord = v.texcoord.xy;
OUT.normalProj = mul (_Projector, float4(v.normal , 0.0));
//TRANSFER_VERTEX_TO_FRAGMENT(OUT);
return OUT;
}
float4 frag_main (Output_Struct OUT) : COLOR
{
// fixed atten = LIGHT_ATTENUATION(i);
// float d = dot (float4(0,0,-1,0), OUT.normalProj);
float4 tex = tex2D(_BaseTexture, OUT.basecoord) * _Color;
// if (d < 0)
// tex.a = 0;
// Uncomment this line for add the base texture.
// tex += tex2D(_BaseTexture, OUT.basecoord);
return tex;
}
ENDCG
}
}
}
