139 lines
3.5 KiB
Plaintext
139 lines
3.5 KiB
Plaintext
// Author：Blastom
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// 这个Shader只用于Non-Directional烘培的物体，动态物体使用光照会不正常
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// 支持GLES 2.0，包括Shader Level 2.0的机器；T4MBase
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// 特别减少Vert传输到Frag的参数数目，因此无法使用surface。
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// 升级Unity版本如果有算法改变，需要特殊处理。
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Shader "Zhanyou/Scene/T4M 4 Textures" {
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Properties {
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_Splat0 ("Layer 1", 2D) = "white" {}
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_Splat1 ("Layer 2", 2D) = "white" {}
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_Splat2 ("Layer 3", 2D) = "white" {}
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_Splat3 ("Layer 4", 2D) = "white" {}
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[NoScaleOffset]_Control ("Control (RGBA)", 2D) = "white" {}
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_Emission("Emission", Float) = 1.0
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}
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CGINCLUDE
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#include "T4MBase.cginc"
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ENDCG
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SubShader {
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Tags {
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// 最后绘制，以最大限度剔除高消耗像素
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"Queue"="AlphaTest+1"
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"SplatCount" = "4"
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"RenderType" = "Opaque"
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}
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// Forward Base
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Pass
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{
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Name "FORWARD"
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Tags { "LightMode" = "ForwardBase" }
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CGPROGRAM
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#define UNITY_PASS_FORWARDBASE
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#pragma multi_compile_fwdbase
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#pragma multi_compile_fog
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#pragma vertex vert_Base
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#pragma fragment frag
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#pragma multi_compile __ PLAYER_HALO_ON
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fixed4 frag(v2f_Base i) : SV_TARGET
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{
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COLOR_FRAG;
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// 世界法线
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fixed3 worldNormal = fixed3(i.tSpace0.z, i.tSpace1.z, i.tSpace2.z);
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GET_UNITY_GI_COLOR;
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// 自发光功能
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c.rgb = giColor + c.rgb * _Emission;
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#if PLAYER_HALO_ON
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c.rgb += _DirectionalLightColor * LightColorFromWorld(worldPos);
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#endif
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UNITY_APPLY_FOG(i.fogCoord, c);
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UNITY_OPAQUE_ALPHA(c.a);
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return c;
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}
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ENDCG
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}
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// Forward Add
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// 注：实际光照贴图只通过meta通道实现，Forward Add仅用于编辑器无光照贴图时预览
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// 简单处理，Forward Add也使用顶点计算光照和视野方向，真实光照参数
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// 该通道可以省去镜面高光等所需参数，因此按常规算法做
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Pass
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{
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Name "FORWARD_ADD"
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Tags { "LightMode" = "ForwardAdd" }
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ZWrite Off
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Blend One One
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CGPROGRAM
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#define UNITY_PASS_FORWARDADD
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#include "UnityCG.cginc"
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#include "Lighting.cginc"
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#include "AutoLight.cginc"
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#include "Gles2Helper.cginc"
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#pragma multi_compile_fwdadd
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#pragma multi_compile_fog
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#pragma skip_variants INSTANCING_ON
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#pragma vertex vert_Add
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#pragma fragment frag
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fixed4 frag(v2f_Add i) : SV_TARGET
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{
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#ifdef LIGHTMAP_ON
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fixed4 c = fixed4(0.0, 0.0, 0.0, 0.0);
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#else
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COLOR_FRAG;
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UNITY_LIGHT_ATTENUATION(atten, i, i.worldPos);
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half NtoL = max(0.0, i.lightDir.z);
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c.rgb = c.rgb * atten * _LightColor0.rgb * NtoL;
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#endif
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UNITY_APPLY_FOG(i.fogCoord, c);
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UNITY_OPAQUE_ALPHA(c.a);
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return c;
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}
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ENDCG
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}
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// Meta
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Pass
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{
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Name "Meta"
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Tags { "LightMode" = "Meta" }
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Cull Off
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CGPROGRAM
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#define UNITY_PASS_META
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#include "UnityCG.cginc"
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#include "UnityMetaPass.cginc"
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#pragma vertex vert
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#pragma fragment frag
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#pragma skip_variants FOG_LINEAR FOG_EXP FOG_EXP2
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#pragma skip_variants INSTANCING_ON
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struct v2f {
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float4 pos : SV_POSITION;
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float4 uv : TEXCOORD0;
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};
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v2f vert(appdata_full v) {
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v2f o;
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UNITY_INITIALIZE_OUTPUT(v2f, o);
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o.pos = UnityObjectToClipPos(v.vertex);
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o.uv = v.texcoord;
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return o;
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}
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fixed4 frag(v2f i) : SV_TARGET
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{
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COLOR_FRAG;
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UnityMetaInput metaIN;
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UNITY_INITIALIZE_OUTPUT(UnityMetaInput, metaIN);
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metaIN.Albedo = c.rgb;
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metaIN.Emission = c.rgb * _Emission;
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return UnityMetaFragment(metaIN);
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}
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ENDCG
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}
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}
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Fallback "Diffuse"
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} |