前网易技术美术总监（韩国人）写的shader,续行讲解
前网易技术美术总监（韩国人）写的shader,续行讲解
https://zhuanlan.zhihu.com/p/26939686
前网易技术美术总监（韩国人）写的shader,续行讲解
雪落桑田
将夸夸其谈，变成脚踏实地
先说明一下，这是一个标准材质：
材质功能如下：
1.pbr标准材质，有三通道合成，pbr图的R精糙度，G金属性，B是AO
2.里面有自发光控制图，控制自发光
3.受伤变红，其实就是一个内发光的东西
4.材质渐变隐匿效果，而且带颜色边的隐匿效果
Shader "Custom/NewSurfaceShader" {
Properties {
//[Header(SURFACE PROPERTICE)]这个表示分类，里面不可以有中文
[Header(SURFACE PROPERTICE)]
_CutOff("CutOff", Range(0,1)) = 1.0
_Color ("Main Color", Color) = (1,1,1,1)
[NoScaleOffset]_MainTex ("Albedo (RGB)", 2D) = "white" {}
[NoScaleOffset]_BurnMap("法线图 (RGB)", 2D) = "white" {}
//NoScaleOffset有这个关键字，就不可以
[Header(MICROFACET LOD 0 PHASE PROPERTICE)]
[NoScaleOffset]_PBRTex("pbr图 (RGB),R粗糙度，G 金属性，B AO", 2D) = "white" {}
[Header(TESTCODE)]
[FloatRange]_MetallicAdjust("Metallic Adjust", Range(0,1.5)) = 1.0
[FloatRange]_RoughnessAdjust("Roughness Adjust", Range(0,1.5)) = 1.0
[FloatRange]_AOAdjust ("A Occulusion Adjust", Range(0,2)) = 1.0
//自发光
[Header(SELF ILLUMINATTON)]
[NoScaleOffset]_EmissionTex( "Emission" ,2D) = "white"{}
_EmissionScale( "Emission Scale" , Range(0,1))=0
//受伤效果
[Header(BE SHOT EFFECT)]
// KeywordEnum表示一个开关,如下图
[KeywordEnum(Off,On)]_HitEffect("HitEffect state",Float) = 0
_GlowColor("Glow Color",Color)=(1,1,1,1)
[PowerSlider(3.0)]_RimPower("Rim Power",Range(0.0,10))=1
//隐匿效果
[Header(DISSOLVE FX)]
[KeywordEnum(Off,On)]_DissolveEffect("Death state",Float) = 0
_BurnSize("Burn Size" , Range(0.0,1.0)) = 0.05
[NoScaleOffset]_BurnRamp("Burn Ramp(RGB)" ,2D) = "white"{}
[NoScaleOffset]_DissolveTex("Dissolve Texture" ,2D) = "white"{}
_DissolvePower("Dissolve Power" , Range(-0.2,0.25)) = -0.2
_DissolveEmissionColor("Dissolve Emission Color" , Color) = (1,1,1)
}
SubShader{
//不透明材质，不可以版本检查
Tags { "RenderType" = "Opaque" "PerformanceChecks"="false" }
LOD 400
AlphaTest Greater[_DissolvePower]//透明度测试，大于这个值不渲染出来
CGPROGRAM
//#include "../PanguShaderCommon.cginc"
// Physically based Standard lighting model, and enable shadows on all light types
//表面标准材质，不接受灯光，动态光，没有雾，没有前置，没有meta
#pragma surface surf Standard nolightmap nodynlightmap nofog nometa noforwardadd vertex:vert
//手机上要加这个，表示最快ARB，不明白加就是行了
#pragma fragmentoption ARB_precision_hint_fastest
//下面是两个预置宏
#pragma multi_compile _HITEFFECT_OFF _HITEFFECT_ON
#pragma multi_compile _DISSOLVEFFECT_OFF _DISSOLVEEFFECT_ON
//不能在手机gles
#pragma exclude_renderers gles
//只有dx11，opengl,gles3,苹果的metal 苹果5s以上
#pragma only_renderers d3d11 glcore gles3 metal
//glsl编译到移动平台GLSL时，关闭顶点着色器中对法线和切线进行自动规范化
#pragma glsl_no_auto_normalization
//sampler2d的半浮点型
sampler2D_half _MainTex;
sampler2D_half _BumpMap;
sampler2D_half _PBRTex;
half _CutOff;
fixed4 _Color;
sampler2D_half _EmissionTex;
#pragma target 3.5 //3.5以上，就是sm3以上
fixed _MetallicAdjust, _RoughnessAdjust, _AOAdjust, _EmissionScale;
//受到伤害时表面内发光
#if _HITEFFECT_ON
fixed4 _GlowColor;
fixed _RimPower;
#endif
//消去材质
#if _DISSOLVEEFFECT_ON
sampler2D_half _DissolveTex;
sampler2D_half _BurnRamp;
fixed3 _DissolveEmissionColor;
fixed _DissolvePower;
fixed _BurnSize;
#endif
struct Input {
float2 uv_MainTex;
half2 uv_DissolveTex;
float viewDir;
fixed color;
INTERNAL_DATA
};
//INTERNAL_DATA声明，可以访问经过法线贴图修改后的平面的法线信息
void vert(inout appdata_full v, out Input o)
{
UNITY_INITIALIZE_OUTPUT(Input, o);
o.color = v.color;
}
void surf (Input IN, inout SurfaceOutputStandard o) {
// Albedo comes from a texture tinted by color
fixed4 c = tex2D (_MainTex, IN.uv_MainTex) * _Color;
o.Albedo = c.rgb;
//clip就是消去
#if _DISSOLVEEFFECT_ON
clip(tex2D(_DissolveTex, IN.uv_DissolveTex).rgb - (_DissolvePower));
half4 dissolveTex = tex2D(_DissolveTex, IN.uv_DissolveTex);
#endif
fixed3 pbrTexRGB = tex2D(_PBRTex, IN.uv_MainTex).rgb;
o.Normal = UnpackNormal(tex2D(_BumpMap, IN.uv_MainTex));
o.Smoothness = pbrTexRGB.r*_RoughnessAdjust;
o.Metallic = pbrTexRGB.r*_MetallicAdjust;
o.Occlusion = lerp(pbrTexRGB.b, 1, 1 - _AOAdjust);
half3 e = tex2D(_EmissionTex, IN.uv_MainTex).rgb;
o.Emission = e.rgb*_EmissionScale;
#if _HITEFFECT_ON
half rimFactor = 1 - max(min(dot(normalize(IN.viewDir), o.Normal), 1),0);
half4 r_c = ((rimFactor *rimFactor) + (rimFactor*(rimFactor*0.425)))*_RimPower*_GlowColor;
o.Albedo += r_c;
#else
o.Albedo;
#endif
#if _DISSOLVEEFFECT_ON
o.Alpha = (_DissolvePower - dissolveTex.r);
if (( o.Alpha < 0 ) && ( o.Alpha > - 0.05))
{
o.Alpha = 1;
o.Emission = tex2D(_BurnRamp, fixed2(dissolveTex.r*(1 / _BurnSize), 0));
o.Albedo = _DissolveEmissionColor*o.Emission;
}
#endif
o.Alpha = c.a- _CutOff;//透明度就透明度减于cutoff值
if (c.a < _CutOff)
{
discard;
}
}
ENDCG
}
FallBack "Diffuse"
}
编辑于 2019-01-19
shader
Unity（游戏引擎）
质感设计（Material Design）
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3 条评论
写下你的评论...
-
肆音1 年前
谢谢分享～
-
墓后煮屎人1 年前
实际算法很少，都是prop预设。。。
雪落桑田 (作者) 回复墓后煮屎人1 年前
其实是给初级玩家，看一下实际的shader每句话有什么意思。并没有实际光影算法