Shader "LWSampleShader"
{
Properties
{
[Space(20)]
[Header(LWRP Demo)]
_TintColor ("Color", color) = (1,1,1,1)
_MainTex("Texture", 2D) = "white" {}
[KeywordEnum(LC, LW1, LW2)] _Sample("Sampler mode", Float) = 0
_Offset("Tiling and Offset", vector) = (1, 1, 0, 0)
[Space(10)]
[Header(Lighting Mode)]
[KeywordEnum(None, Lambert, BlinnPhong)] _LI("Lighitng mode", Float) = 0
[Space(10)]
[Header(Alpha features)]
_Alpha("AlphaThreshold", Range(0,1)) = 1 [Enum(UnityEngine.Rendering.BlendMode)] _SrcBlend("Src Blend", Float) = 1
[Enum(UnityEngine.Rendering.BlendMode)] _DstBlend("Dst Blend", Float) = 1
[Enum(Off, 0, On, 1)] _ZWrite("ZWrite", Float) = 0
[Enum(UnityEngine.Rendering.CompareFunction)] _ZTest("ZTest", Float) = 0
[Enum(UnityEngine.Rendering.CullMode)] _Cull("Cull Mode", Float) = 1
}
SubShader
{
// Select Render type
Tags { "RenderPipeline"="LightweightPipeline" "RenderType"="Opaque" "Queue"="Geometry"}
//Tags {"RenderPipeline"="LightweightPipeline" "RenderType"="TransparentCutout" "Queue"="AlphaTest"}
//Tags {"RenderPipeline"="LightweightPipeline" "RenderType"="Transparent" "Queue"="Transparent"}
LOD 100
Pass
{
Blend[_SrcBlend][_DstBlend]
ZWrite[_ZWrite]
ZTest[_ZTest]
Cull[_Cull]
HLSLPROGRAM
#pragma prefer_hlslcc gles
#pragma exclude_renderers d3d11_9x // #pragma shader_feature _SAMPLE_GI
#pragma vertex vert
#pragma fragment frag
#pragma multi_compile _SAMPLE_LC _SAMPLE_LW1 _SAMPLE_LW2
#pragma multi_compile _LI_NONE _LI_LAMBERT _LI_BLINNPHONG
#include "Packages/com.unity.render-pipelines.lightweight/ShaderLibrary/Lighting.hlsl"
#if _SAMPLE_LC
// macro include
# include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Macros.hlsl"
#endif
// fog
#pragma multi_compile_fog
struct VertexInput
{
float4 vertex : POSITION;
float2 uv : TEXCOORD0;
float3 normal : NORMAL;
};
struct VertexOutput
{
float4 vertex : SV_POSITION;
float2 uv : TEXCOORD0;
float fogCoord : TEXCOORD1;
float3 normal : NORMAL; // float3 viewDir : TEXCOORD2; // built in view vector
float3 WorldSpaceViewDirection : TEXCOORD3;
};
CBUFFER_START(UnityPerMaterial)
half4 _TintColor;
half _Alpha;
#if _SAMPLE_LC | _SAMPLE_LW2
sampler2D _MainTex;
float4 _MainTex_ST;
#elif _SAMPLE_LW1
TEXTURE2D(_MainTex);
SAMPLER(sampler_MainTex);
float4 _Offset;
#endif
CBUFFER_END
VertexOutput vert(VertexInput v) {
VertexOutput o;
o.normal = TransformObjectToWorld(v.normal);
// o.normal = normalize(mul(v.normal,(float3x3)UNITY_MATRIX_I_M));
o.vertex = TransformWorldToHClip(TransformObjectToWorld(v.vertex.xyz));
#if _SAMPLE_LC
o.uv = TRANSFORM_TEX(v.uv, _MainTex);
#elif _SAMPLE_LW1 | _SAMPLE_LW2
o.uv = v.uv;
#endif
o.fogCoord = ComputeFogFactor(o.vertex.z);
o.WorldSpaceViewDirection = _WorldSpaceCameraPos.xyz -
mul(GetObjectToWorldMatrix(), float4(v.vertex.xyz, 1.0)).xyz;
return o;
}
half4 frag(VertexOutput i) : SV_Target
{
#if _SAMPLE_LC
half4 col = tex2D(_MainTex, i.uv);
#elif _SAMPLE_LW1
float2 uv = i.uv * _Offset.xy + _Offset.zw;
float4 col = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, uv);
#elif _SAMPLE_LW2
float2 uv = i.uv.xy * (_MainTex_ST.xy + _MainTex_ST.zw);
half4 col = tex2D(_MainTex, uv);
#endif
#if _LI_LAMBERT
Light mainLight = GetMainLight();
float NdotL = saturate(dot(mainLight.direction.xyz, i.normal));
half3 ambient = SampleSH(i.normal);
col.rgb *= NdotL * mainLight.color.rgb + ambient;
#elif _LI_BLINNPHONG Light mainLight = GetMainLight();
half3 BlinnPhong = LightingSpecular(mainLight.color.rgb,
mainLight.direction.xyz, i.normal, i.WorldSpaceViewDirection.xyz,
half4(1,1,0,0), 12); half3 ambient = SampleSH(i.normal);
col.rgb *= BlinnPhong + ambient;
#endif
col *= _TintColor;
col.rgb = MixFog(col.rgb, i.fogCoord);
//alphaTest
//clip(col.a - _Alpha);
return col;
}
ENDHLSL
}
}
}
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