{"id":251,"date":"2017-08-02T11:29:15","date_gmt":"2017-08-02T03:29:15","guid":{"rendered":"http:\/\/www.yarpee.com\/?p=251"},"modified":"2017-08-02T11:31:25","modified_gmt":"2017-08-02T03:31:25","slug":"transform_tex","status":"publish","type":"post","link":"http:\/\/www.yarpee.cn\/?p=251","title":{"rendered":"TRANSFORM_TEX"},"content":{"rendered":"<p>TRANSFORM_TEX\u662fUnity Shader\u91cc\u63d0\u4f9b\u7684\u4e00\u4e2a\u83b7\u53d6\u6b63\u786e\u7684UV\u5750\u6807\u7684\u5b8f\u5b9a\u4e49\u51fd\u6570\uff0c\u5b83\u5b9a\u4e49\u5728UnityCG.cginc\u91cc\uff1a<\/p>\n<blockquote><p>\/\/ Transforms 2D UV by scale\/bias property<br \/>\n#define TRANSFORM_TEX(tex,name) (tex.xy * name##_ST.xy + name##_ST.zw)<\/p><\/blockquote>\n<p>Vertex Shader\u7684\u8f93\u5165\u53c2\u6570\u91cc\u5df2\u7ecf\u4f20\u5165\u4e86\u9876\u70b9\u7684UV\u5750\u6807\u4e86\uff0c\u4e3a\u4ec0\u4e48\u4ecd\u9700\u8981TRANSFORM_TEX\u6765\u505a\u8f6c\u6362\u5462\uff1f<\/p>\n<p>\u539f\u56e0\u662f\u5f53\u6211\u4eec\u7684Shader\u4e2d\u6709\u5bf9Texture\u8fdb\u884c\u5f15\u7528\u3001\u91c7\u6837\u65f6\uff0cUnity\u7684\u6750\u8d28\u7f16\u8f91\u5668\u9ed8\u8ba4\u652f\u6301\u4e86\u5bf9Texture\u7684Tiling\uff08\u5e73\u94fa\uff09\u548cOffset\u3002<\/p>\n<p><a href=\"http:\/\/www.yarpee.cn\/wp-content\/uploads\/2017\/08\/1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-252\" src=\"http:\/\/www.yarpee.cn\/wp-content\/uploads\/2017\/08\/1.jpg\" alt=\"\" width=\"264\" height=\"73\" \/><\/a><\/p>\n<p>\u6ca1\u6709\u901a\u8fc7TRANSFORM_TEX\u8fdb\u884c\u8f6c\u6362\u7684UV\u5750\u6807Tiling\u548cOffset\u7684\u8bbe\u7f6e\u5c31\u4e0d\u4f1a\u751f\u6548\u3002\u90a3\u4e48Unity Shader\u662f\u5982\u4f55\u901a\u8fc7TRANSFORM_TEX\u5b9e\u73b0Tiling\u548cOffset\u7684\u5462\uff1f\u7b54\u6848\u5c31\u5728\u5b83\u7684\u5b8f\u5b9a\u4e49\u91cc\u3002<\/p>\n<p>tex\u662f\u4f20\u5165\u7684UV\u5750\u6807\uff0c\u5b83\u662ffloat4\u7c7b\u578b\uff0c\u4f46UV\u53ea\u4f7f\u7528\u4e86\u5176xy\u503c\u3002<\/p>\n<p>name\u662fUV\u5c06\u8981Sampler\u7684Texture\u540d\uff0c\u901a\u8fc7\u5b8f\u7684##\u8fde\u6210\u4e86\u4e00\u4e2a\u53ebname_ST\u7684\u53d8\u91cf\u540d\uff0c\u8fd9\u4e2a\u53d8\u91cf\u5c31\u662f\u7528\u6765\u5b58\u50a8Tiling\u548cOffset\u7684\uff0c\u5176\u4e2dxy\u662fTiling\uff0czw\u662fOffset\u3002<\/p>\n<p>\u56e0\u6b64Unity Shader\u4e2d\u5f53\u4f60\u5b9a\u4e49\u4e00\u4e2aTexture Sampler\u7684\u65f6\u5019\uff08\u5982sampler2D _MainTex;\uff09\u603b\u8981\u540c\u65f6\u5b9a\u4e49\u4e00\u4e2afloat4\u53d8\u91cf\uff08\u5982float4 _MainTex_ST;\uff09\uff0c\u8fd9\u4e2a\u53d8\u91cf\u770b\u4f3c\u6ca1\u88ab\u4f7f\u7528\uff0c\u5176\u5b9e\u662f\u5b83\u7684\u4f7f\u7528\u88ab\u5305\u542b\u5728TRANSFORM_TEX\u91cc\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>TRANSFORM_TEX\u662fUnity Shader\u91cc\u63d0\u4f9b\u7684\u4e00\u4e2a\u83b7\u53d6\u6b63\u786e\u7684UV\u5750\u6807\u7684\u5b8f\u5b9a\u4e49\u51fd\u6570\uff0c\u5b83\u5b9a\u4e49\u5728Uni &hellip; <\/p>\n<p class=\"link-more\"><a href=\"http:\/\/www.yarpee.cn\/?p=251\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u201cTRANSFORM_TEX\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-251","post","type-post","status-publish","format-standard","hentry","category-unity"],"_links":{"self":[{"href":"http:\/\/www.yarpee.cn\/index.php?rest_route=\/wp\/v2\/posts\/251"}],"collection":[{"href":"http:\/\/www.yarpee.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.yarpee.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.yarpee.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.yarpee.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=251"}],"version-history":[{"count":2,"href":"http:\/\/www.yarpee.cn\/index.php?rest_route=\/wp\/v2\/posts\/251\/revisions"}],"predecessor-version":[{"id":254,"href":"http:\/\/www.yarpee.cn\/index.php?rest_route=\/wp\/v2\/posts\/251\/revisions\/254"}],"wp:attachment":[{"href":"http:\/\/www.yarpee.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=251"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yarpee.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=251"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yarpee.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=251"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}