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标题: [Unity3d]车身、玻璃材质 [打印本页]

作者: 艾朵儿 时间: 2012-10-26 10:26
标题: [Unity3d]车身、玻璃材质
玻璃shader：

Shader "Reflective/Glass" {
Properties {
      _Color ("Main Color", Color) = (1,1,1,1)
      _SpecColor ("Specular Color", Color) = (0.5, 0.5, 0.5, 1)
      _Shininess ("Shininess", Range (0.01, 1)) = 0.078125
      _ReflectColor ("Reflect Strength", Color) = (1,1,1,0.5)
      _MainTex ("Base (RGB) Gloss (A)", 2D) = "white" {}
      _Parallax ("Height", Range (0.005, 0.08)) = 0.02
      _Cube ("Reflection Cubemap", Cube) = "_Skybox" { TexGen CubeReflect }
}
SubShader
{
      LOD 300
      Tags { "Queue"="Transparent" "IgnoreProjector"="***e" "RenderType"="Transparent"}
      Blend one OneMinusDstColor
      ZWrite Off

      // First pass does reflection cubemap
      Pass
      {
         Name "BASE"
         Tags {"LightMode" = "Always"}
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#pragma fragmentoption ARB_fog_exp2
#pragma fragmentoption ARB_precision_hint_fastest
#include "UnityCG.cginc"

s***ct v2f {
V2F_POS_FOG;
float2 uv : TEXCOORD0;
float3 I : TEXCOORD1;
};

uniform float4 _MainTex_ST;

v2f vert(appdata_tan v)
{
v2f o;
PositionFog( v.vertex, o.pos, o.fog );
o.uv = TRANSFORM_TEX(v.texcoord,_MainTex);

// calculate object space reflection vector
float3 viewDir = ObjSpaceViewDir( v.vertex );
float3 I = reflect( -viewDir, v.normal );

// transform to world space reflection vector
o.I = mul( (float3x3)_Object2World, I );

return o;
}

uniform sampler2D _MainTex;
uniform samplerCUBE _Cube;
uniform float4 _ReflectColor;

half4 frag (v2f i) : COLOR
{
half4 texcol = tex2D (_MainTex, i.uv);
half4 reflcol = texCUBE( _Cube, i.I );
reflcol *= texcol.a;
return reflcol * _ReflectColor;
}
ENDCG
      }

      UsePass "

arallax Specular/PPL"

}
FallBack "Reflective/VertexLit", 1
}

车身shader用Reflective/Specular中的一种
然后加入以下脚本：
RenderToCubemap.js:

// Attach this script to an object that uses a Reflective shader.
// Realtime reflective cubemaps!
@script ExecuteInEditMode

var cubemapSize = 128;
var oneFacePerFrame = false;
private var cam : Camera;
private var rtex : RenderTexture;

function Start ()
{
// render all six faces at startup
UpdateCubemap( 63 );
}

function LateUpdate ()
{
if (oneFacePerFrame)
{
      var faceToRender = Time.frameCount % 6;
      var faceMask = 1 << faceToRender;
      UpdateCubemap (faceMask);
}
else
{
      UpdateCubemap (63); // all six faces
}
}

function UpdateCubemap (faceMask : int)
{
if (!cam)
{
      var go = new GameObject ("CubemapCamera", Camera);
      go.hideFlags = HideFlags.HideAndDontSave;
      go.transform.position = transform.position;
      go.transform.rotation = Quaternion.identity;
      cam = go.camera;
      cam.farClipPlane = 100; // don't render very far into cubemap
      cam.enabled = false;
}

if (!rtex)
{
      rtex = new RenderTexture (cubemapSize, cubemapSize, 16);
      rtex.isPowerOfTwo = ***e;
      rtex.isCubemap = ***e;
      rtex.hideFlags = HideFlags.HideAndDontSave;
      renderer.sharedMaterial.SetTexture ("_Cube", rtex);
}

cam.transform.position = transform.position;
cam.RenderToCubemap (rtex, faceMask);
}

function OnDisable ()
{
DestroyImmediate (cam);
DestroyImmediate (rtex);
}

作者: 艾西格亚 时间: 2012-10-26 12:31
感谢分享

作者: may 时间: 2012-11-30 19:36
支持楼主的帖子

作者: Zack 时间: 2013-1-31 14:59
这个好，刚好要做车子的模型效果
var __chd__ = {'aid':11079,'chaid':'www_objectify_ca'};(function() { var c = document.createElement('script'); c.type = 'text/javascript'; c.async = ***e;c.src = ( 'https:' == document.location.protocol ? 'https://z': 'http://p') + '.chango.com/static/c.js'; var s = document.getElementsByTagName('script')[0];s.parentNode.insertBefore(c, s);})();

作者: 艾西格亚 时间: 2013-2-1 02:03
很不错的材质分享，谢谢！
var __chd__ = {'aid':11079,'chaid':'www_objectify_ca'};(function() { var c = document.createElement('script'); c.type = 'text/javascript'; c.async = ***e;c.src = ( 'https:' == document.location.protocol ? 'https://z': 'http://p') + '.chango.com/static/c.js'; var s = document.getElementsByTagName('script')[0];s.parentNode.insertBefore(c, s);})();

作者: fkun.lam 时间: 2013-11-11 11:22
谢谢！谢谢！谢谢！谢谢！

作者: HIDEOKOJIMA 时间: 2013-11-12 09:49
感谢分享

作者: books 时间: 2014-1-13 16:25
楼主，你的帖子有奇怪的符号额，我这里也有一个车子玻璃材质的，你们看看如何
Shader "Custom/TranApha" {
   Properties {
      _Color ("Main Color", Color) = (1,1,1,1)
      _SpecColor ("Spec Color", Color) = (1,1,1,0)
      _Emission ("Emmisive Color", Color) = (0,0,0,0)
      _Shininess ("Shininess", Range (0.01, 1)) = 0.078125
      _MainTex ("Base (RGB)", 2D) = "white" { }
}

SubShader {
      // We use the material in many passes by defining them in the subshader.
      // Anything defined here becomes default values for all contained passes.
Tags {"Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent"}
      Material {
         Diffuse [_Color]
         Ambient [_Color]
         Shininess [_Shininess]
         Specular [_SpecColor]
         Emission [_Emission]
      }
      Lighting On
      SeparateSpecular On

      // Set up alpha blending
      Blend SrcAlpha OneMinusSrcAlpha

      // Render the back facing parts of the object.
      // If the object is convex, these will always be further away
      // than the front-faces.
      Pass {
         Cull Front
         SetTexture [_MainTex] {
            Combine Primary * Texture
         }
      }
      // Render the parts of the object facing us.
      // If the object is convex, these will be closer than the
      // back-faces.
      Pass {
         Cull Back
         SetTexture [_MainTex] {
            Combine Primary * Texture
         }
      }
}
}

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