{"id":3574,"date":"2021-10-17T17:55:08","date_gmt":"2021-10-17T09:55:08","guid":{"rendered":"https:\/\/www.yumefx.com\/?p=3574"},"modified":"2021-10-17T23:40:56","modified_gmt":"2021-10-17T15:40:56","slug":"screenuv%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.yumefx.com\/?p=3574","title":{"rendered":"ScreenUV\u4f7f\u7528"},"content":{"rendered":"\n<h1 style=\"text-align: center;\">\u524d\u8a00<\/h1>\n<p>\u5728<a title=\"UV\u6d41\u52a8\u4e0eUV\u6270\u52a8\" href=\"https:\/\/www.yumefx.com\/?p=3493\" rel=\"bookmark\">UV\u6d41\u52a8\u4e0eUV\u6270\u52a8<\/a>\u4e00\u6587\u4e2d\uff0c\u7b80\u5355\u6f14\u793a\u4e86\u5bf9\u4e8eUV\u8fdb\u884c\u504f\u79fb\u5f97\u5230\u7684\u6548\u679c\uff0c\u672c\u6587\u63a5\u7740\u8bf4\u4e00\u4e0bScreenUV\u7684\u539f\u7406\u53ca\u5b9e\u73b0\u3002<\/p>\n<h1>&nbsp;<\/h1>\n<h1 style=\"text-align: center;\">\u5b9e\u73b0<\/h1>\n<p>ScreenUV\u6307\u7684\u662f\uff0c\u6a21\u578b\u4e0a\u7684\u7eb9\u7406\u5728\u5c4f\u5e55\u4e0a\u5c55\u5f00\u6295\u5c04\u5230\u7269\u4f53\u4e0a\uff0c\u6a21\u578b\u7684\u7f29\u653e\u3001\u79fb\u52a8\u3001\u65cb\u8f6c\u90fd\u4e0d\u4f1a\u5f71\u54cd\u7eb9\u7406\u7684\u5c55\u793a\u6548\u679c\uff0c\u5927\u6982\u50cf\u4e0b\u9762\u8fd9\u6837\u3002<\/p>\n<p><img loading=\"lazy\" class=\"size-full wp-image-3582 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/10\/ScreenUV_02.gif\" alt=\"\" width=\"1172\" height=\"641\"><\/p>\n<p>\u8fd9\u4e2a\u6548\u679c\u5f88\u7b80\u5355\uff0c\u65e2\u7136\u7eb9\u7406\u662f\u4e0e\u5c4f\u5e55\u76f8\u5173\uff0c\u90a3\u4e48\u5148\u628a\u9ed8\u8ba4\u7684ObjectSpace\u7269\u4f53\u7a7a\u95f4\u7684\u9876\u70b9\u4f4d\u7f6e\u8f6c\u6362\u5230ViewSpace\u89c2\u5bdf\u7a7a\u95f4\uff0c\u518d\u53bb\u5bf9\u7eb9\u7406\u8fdb\u884c\u91c7\u6837\u5c31\u53ef\u4ee5\u3002<\/p>\n<p>\u4e0d\u8fc7\u53ea\u662f\u8fd9\u6837\u7684\u8bdd\u6548\u679c\u5f88\u5446\uff0c\u9700\u8981\u518d\u8fdb\u884c\u7578\u53d8\u77eb\u6b63\u8ba9\u7269\u4f53\u8fb9\u7f18\u5904\u626d\u66f2\u6548\u679c\u66f4\u52a0\u771f\u5b9e\uff0c\u5e76\u4fee\u590d\u77eb\u6b63\u7578\u53d8\u5bfc\u81f4\u7684\u7eb9\u7406\u5927\u5c0f\u88ab\u9501\u5b9a\u4e0d\u80fd\u901a\u8fc7\u8ddd\u79bb\u63a7\u5236\u7eb9\u7406\u5927\u5c0f\u7684\u95ee\u9898\uff0c\u589e\u52a0\u901a\u8fc7Tilling\u63a7\u5236\u5c4f\u5e55\u7eb9\u7406\u504f\u79fb\u548c\u7f29\u653e<span style=\"font-size: inherit;\">\uff0c\u6700\u7ec8\u6548\u679c\u5982\u4e0b\u3002<\/span><\/p>\n<p><img loading=\"lazy\" class=\"size-full wp-image-3583 aligncenter\" src=\"https:\/\/www.yumefx.com\/wp-content\/uploads\/2021\/10\/ScreenUV_03.gif\" alt=\"\" width=\"1172\" height=\"641\"><\/p>\n<p>\u5b9e\u9645\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre><span>\/\/ shader\u7684\u8def\u5f84\u548c\u540d\u79f0<\/span>\n<span>Shader \"Shader Forge\/ScreenUV\" {<\/span>\n<span>    \/\/ \u66b4\u9732\u5c5e\u6027\u5230\u9762\u677f<\/span>\n<span>    Properties {<\/span>\n<span>        _MainTex(\"RGB: Color  A: Alpha\", 2d) = \"gray\"{}<\/span>\n<span>        _Opacity(\"Opacity\", range(0.0, 1.0)) = 1.0<\/span>\n<span>        _ScreenMap(\"ScreenUV Textrue\", 2d) = \"white\"{}<\/span>\n<span>    }<\/span>\n<span>    SubShader {<\/span>\n<span>        Tags {<\/span>\n<span>            \"Queue\"=\"Transparent\"                \/\/\u8c03\u6574\u6e32\u67d3\u987a\u5e8f<\/span>\n<span>            \"RenderType\"=\"Transparent\"           \/\/\u6539\u4e3a\u5bf9\u5e94\u7684<\/span>\n<span>            \"ForceNoShadowCasting\"=\"True\"        \/\/\u5173\u95ed\u9634\u5f71\u6295\u5c04<\/span>\n<span>            \"IgnoreProjector\"=\"True\"             \/\/\u4e0d\u54cd\u5e94\u6295\u5c04\u5668<\/span>\n<span>        }<\/span>\n<span>        Pass {<\/span>\n<span>            Name \"FORWARD\"<\/span>\n<span>            Tags {<\/span>\n<span>                \"LightMode\"=\"ForwardBase\"<\/span>\n<span>            }<\/span>\n<span>            Blend One OneMinusSrcAlpha          \/\/\u4fee\u6539\u6df7\u5408\u6a21\u5f0f<\/span>\n<span>            <\/span>\n<span>            CGPROGRAM<\/span>\n<span>            #pragma vertex vert<\/span>\n<span>            #pragma fragment frag<\/span>\n<span>            #include \"UnityCG.cginc\"<\/span>\n<span>            #pragma multi_compile_fwdbase_fullshadows<\/span>\n<span>            #pragma target 3.0<\/span>\n<span>            <\/span>\n<span>            \/\/ \u58f0\u660e\u53d8\u91cf<\/span>\n<span>            uniform sampler2D _MainTex; <\/span>\n<span>            uniform half _Opacity;<\/span>\n<span>            uniform sampler2D _ScreenMap; uniform float4 _ScreenMap_ST; \/\/\u652f\u6301UV TillingOffset<\/span>\n<span>            <\/span>\n<span>            \/\/ \u8f93\u5165\u7ed3\u6784<\/span>\n<span>            struct VertexInput {<\/span>\n<span>                float4 vertex : POSITION;<\/span>\n<span>                float2 uv : TEXCOORD0;<\/span>\n<span>            };<\/span>\n<span>            <\/span>\n<span>            \/\/ \u8f93\u51fa\u7ed3\u6784<\/span>\n<span>            struct VertexOutput {<\/span>\n<span>                float4 pos : SV_POSITION;<\/span>\n<span>                float2 uv : TEXCOORD0;<\/span>\n<span>                float2 screenUV : TEXCOORD1;<\/span>\n<span>            };<\/span>\n<span>            <\/span>\n<span>            \/\/ \u9876\u70b9shader<\/span>\n<span>            VertexOutput vert (VertexInput v) {<\/span>\n<span>                VertexOutput o = (VertexOutput)0;<\/span>\n<span>                o.pos = UnityObjectToClipPos( v.vertex );<\/span>\n<span>                o.uv = v.uv;<\/span>\n<span><\/span>\n<span>                float3 posVS = UnityObjectToViewPos( v.vertex ).xyz;  \/\/\u5f97\u5230\u9876\u70b9\u7684\u89c2\u5bdf\u7a7a\u95f4\u4f4d\u7f6e<\/span>\n<span>                float originDist = UnityObjectToViewPos( float3(0.0, 0.0, 0.0) ).z; \/\/\u539f\u70b9\u7684\u89c2\u5bdf\u7a7a\u95f4\u4f4d\u7f6e\u6df1\u5ea6<\/span>\n<span>                <\/span>\n<span>                o.screenUV = posVS.xy \/ posVS.z;       \/\/\u7578\u53d8\u77eb\u6b63<\/span>\n<span>                o.screenUV *= originDist;              \/\/\u4fee\u590d\u7578\u53d8\u77eb\u6b63\u5e26\u6765\u7684\u7eb9\u7406\u5927\u5c0f\u88ab\u9501\u5b9a\u95ee\u9898\uff0c\u8ba9\u7eb9\u7406\u5927\u5c0f\u968f\u8ddd\u79bb\u53d8\u5316<\/span>\n<span>                o.screenUV = TRANSFORM_TEX(o.screenUV, _ScreenMap); \/\/\u542f\u7528Tilling<\/span>\n<span><\/span>\n<span>                return o;<\/span>\n<span>            }<\/span>\n<span>            <\/span>\n<span>            \/\/ \u50cf\u7d20shader<\/span>\n<span>            float4 frag(VertexOutput i) : COLOR {<\/span>\n<span>                half4 var_MainTex = tex2D(_MainTex, i.uv);   <\/span>\n<span>                half4 var_ScreenMap = tex2D(_ScreenMap, i.screenUV);<\/span>\n<span>                <\/span>\n<span>                half finalOpacity = var_MainTex.a * _Opacity * var_ScreenMap.r;  <\/span>\n<span>                return half4(var_MainTex.rgb * _Opacity,finalOpacity);<\/span>\n<span>            }<\/span>\n<span>            ENDCG<\/span>\n<span>        }<\/span>\n<span>    }<\/span>\n<span>    FallBack \"Diffuse\"<\/span>\n<span>}<\/span>\n<\/pre>\n\n\n\n<p style=\"text-align: center;\">\u00a0<\/p>\n<p>\u672c\u6587\u540c\u6837\u53c2\u8003\u81ea<a href=\"https:\/\/space.bilibili.com\/6373917\/video\">B\u7ad9\u5e84\u61c2\u7684\u6280\u672f\u7f8e\u672f\u5165\u95e8\u8bfe<\/a>\uff0c\u611f\u8c22\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>\u4eba\u53ea\u8981\u8ba9\u6b65\u4e00\u6b21\uff0c<br \/>\u5c31\u4f1a\u4e0d\u65ad\u8ba9\u6b65\uff0c<br \/>\u4e00\u6b21\u59a5\u534f\u52bf\u5fc5\u5bfc\u81f4\u4e00\u8fde\u4e32\u65b0\u7684\u59a5\u534f\u3002<\/p>\n<p style=\"text-align: right;\">\u2014\u2014\u8328\u5a01\u683c<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u8a00 \u5728UV\u6d41\u52a8\u4e0eUV\u6270\u52a8\u4e00\u6587\u4e2d\uff0c\u7b80\u5355\u6f14\u793a\u4e86\u5bf9\u4e8eUV\u8fdb\u884c\u504f\u79fb\u5f97\u5230\u7684\u6548\u679c\uff0c\u672c\u6587\u63a5\u7740\u8bf4\u4e00\u4e0bScreenUV\u7684\u539f\u7406\u53ca [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3589,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4,69],"tags":[71,14,72],"_links":{"self":[{"href":"https:\/\/www.yumefx.com\/index.php?rest_route=\/wp\/v2\/posts\/3574"}],"collection":[{"href":"https:\/\/www.yumefx.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yumefx.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yumefx.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yumefx.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3574"}],"version-history":[{"count":0,"href":"https:\/\/www.yumefx.com\/index.php?rest_route=\/wp\/v2\/posts\/3574\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.yumefx.com\/index.php?rest_route=\/wp\/v2\/media\/3589"}],"wp:attachment":[{"href":"https:\/\/www.yumefx.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3574"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yumefx.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3574"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yumefx.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3574"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}