unity3d中玻璃反射周围环境怎么表现

unity3d中玻璃反射周围环境怎么表现

反射上面加个衰减.衰减类型用fresnel折射用纯白烟雾颜色是控制玻璃颜色的地方。

透明玻璃材质和镜面反射材质都是需要光影技术（shader）配合的，属于特效材质。 转给你个车身、玻璃材质的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"="true" "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" struct 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 "parallax specular/ppl" } fallback "reflective/vertexlit", 1 } 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"="true" "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" struct 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 "parallax 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 = true; rtex.iscubemap = true; rtex.hideflags = hideflags.hideanddontsave; renderer.sharedmaterial.settexture ("_cube", rtex); } cam.transform.position = transform.position; cam.rendertocubemap (rtex, facemask); } function ondisable () { destroyimmediate (cam); destroyimmediate (rtex); }