第一次接触Shader，项目需要，直接说需求吧，需要一个透明并且能接受阴影的shader。unity系统自带的shader已经满足不了了。上一段代码吧
Shader "GreenArch/Transparent Plane Shadow2" {
Properties {
}
SubShader {
Tags {
"RenderType"="Opaque"
}
Pass {
Name "DEFERRED"
Tags {
"LightMode"="Deferred"
}
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#define UNITY_PASS_DEFERRED
#include "UnityCG.cginc"
#include "UnityPBSLighting.cginc"
#include "UnityStandardBRDF.cginc"
#pragma fragmentoption ARB_precision_hint_fastest
#pragma multi_compile_shadowcaster
#pragma multi_compile ___ UNITY_HDR_ON
#pragma multi_compile_fog
#pragma exclude_renderers gles3 metal d3d11_9x xbox360 xboxone ps3 ps4 psp2
#pragma target 3.0
struct VertexInput {
float4 vertex : POSITION;
float3 normal : NORMAL;
};
struct VertexOutput {
float4 pos : SV_POSITION;
float4 posWorld : TEXCOORD0;
float3 normalDir : TEXCOORD1;
};
VertexOutput vert (VertexInput v) {
VertexOutput o = (VertexOutput);
o.normalDir = UnityObjectToWorldNormal(v.normal);
o.posWorld = mul(unity_ObjectToWorld, v.vertex);
o.pos = mul(UNITY_MATRIX_MVP, v.vertex );
return o;
}
void frag(
VertexOutput i,
out half4 outDiffuse : SV_Target0,
out half4 outSpecSmoothness : SV_Target1,
out half4 outNormal : SV_Target2,
out half4 outEmission : SV_Target3 )
{
i.normalDir = normalize(i.normalDir);
float3 viewDirection = normalize(_WorldSpaceCameraPos.xyz - i.posWorld.xyz);
float3 normalDirection = i.normalDir;
float3 viewReflectDirection = reflect( -viewDirection, normalDirection );
////// Lighting:
float3 finalColor = ;
outDiffuse = half4( , , , );
outSpecSmoothness = half4(,,,);
outNormal = half4( normalDirection * 0.5 + 0.5, );
outEmission = half4(,,,);
#ifndef UNITY_HDR_ON
outEmission.rgb = exp2(-outEmission.rgb);
#endif
}
ENDCG
}
Pass {
Name "FORWARD"
Tags {
"LightMode"="ForwardBase"
}
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#define UNITY_PASS_FORWARDBASE
#include "UnityCG.cginc"
#include "UnityPBSLighting.cginc"
#include "UnityStandardBRDF.cginc"
#pragma multi_compile_fwdbase_fullshadows
#pragma multi_compile_fog
#pragma exclude_renderers gles3 metal d3d11_9x xbox360 xboxone ps3 ps4 psp2
#pragma target 3.0
struct VertexInput {
float4 vertex : POSITION;
float3 normal : NORMAL;
};
struct VertexOutput {
float4 pos : SV_POSITION;
float4 posWorld : TEXCOORD0;
float3 normalDir : TEXCOORD1;
UNITY_FOG_COORDS()
};
VertexOutput vert (VertexInput v) {
VertexOutput o = (VertexOutput);
o.normalDir = UnityObjectToWorldNormal(v.normal);
o.posWorld = mul(unity_ObjectToWorld, v.vertex);
o.pos = mul(UNITY_MATRIX_MVP, v.vertex );
UNITY_TRANSFER_FOG(o,o.pos);
return o;
}
float4 frag(VertexOutput i) : COLOR {
i.normalDir = normalize(i.normalDir);
float3 viewDirection = normalize(_WorldSpaceCameraPos.xyz - i.posWorld.xyz);
float3 normalDirection = i.normalDir;
float3 viewReflectDirection = reflect( -viewDirection, normalDirection );
////// Lighting:
float3 finalColor = ;
fixed4 finalRGBA = fixed4(finalColor,);
UNITY_APPLY_FOG(i.fogCoord, finalRGBA);
return finalRGBA;
}
ENDCG
}
}
FallBack "Diffuse"
CustomEditor "ShaderForgeMaterialInspector"
}