{"id":344,"date":"2022-05-06T16:43:35","date_gmt":"2022-05-06T08:43:35","guid":{"rendered":"http:\/\/www.mapleriver.cn\/?p=344"},"modified":"2022-06-15T18:20:48","modified_gmt":"2022-06-15T10:20:48","slug":"materialpropertyblock","status":"publish","type":"post","link":"https:\/\/www.mapleriver.cn\/?p=344","title":{"rendered":"MaterialPropertyBlock"},"content":{"rendered":"

1.MaterialPropertyBlock<\/h3>\n

 \u00a0 \u5b9a\u4e49\uff1aA block of material values to apply.\uff08\u4e00\u5757\u53ef\u4ee5\u5e94\u7528\u7684\u6750\u8d28\u5c5e\u6027\uff09
\n \u00a0 Unity\u4e2d\u6240\u6709\u7684\u4e1c\u897f\u90fd\u662f\u901a\u8fc7\u6750\u8d28\uff08material\uff09\u6765\u8fdb\u884c\u6e32\u67d3\u7684\uff0c\u6750\u8d28\u53c8\u5f71\u54cd\u5230\u5408\u6279\u3002\u90a3\u4e48\u6709\u6ca1\u6709\u4e00\u4e2a\u65b9\u5f0f\u53c8\u8ba9\u7269\u4f53\u7528\u540c\u4e00\u4e2a\u6750\u8d28\u6e32\u67d3\uff08\u53ef\u4ee5\u5408\u6279\uff09\uff0c\u53c8\u53ef\u4ee5\u8ba9\u7269\u4f53\u8868\u73b0\u51fa\u4e0d\u540c\u7684\u6027\u8d28\u5462\uff1f\u90a3\u5c31\u8981\u7528\u5230MaterialPropertyBlock<\/code>\u4e86\u3002<\/p>\n

\n

 \u00a0 Use it in situations where you want to draw multiple objects with the same material, but slightly different properties. For example, if you want to slightly change the color of each mesh drawn. Changing the render state is not supported.
\n \u00a0 \u5f53\u4f60\u60f3\u7528\u76f8\u540c\u7684\u6750\u8d28\u7ed8\u5236\u591a\u4e2a\u5bf9\u8c61\uff0c\u4f46\u6bcf\u4e2a\u5bf9\u8c61\u5c5e\u6027\u7565\u6709\u4e0d\u540c\u7684\u65f6\u5019\u5c31\u53ef\u4ee5\u4f7f\u7528MaterialPropertyBlock\u3002\u4f8b\u5982\u7a0d\u5fae\u6539\u53d8\u6bcf\u4e2a\u7f51\u683c\u7684\u989c\u8272\u3002\u4f46\u4fee\u6539\u6e32\u67d3\u72b6\u6001\u4e0d\u652f\u6301\u4fee\u6539\u6bcf\u4e2a\u7f51\u683c\u989c\u8272\u3002
\n \u00a0 Unity's terrain engine uses MaterialPropertyBlock to draw trees; all of them use the same material, but each tree has different color, scale & wind factor.
\n \u00a0 Unity \u7684\u5730\u5f62\u5f15\u64ce\u4f7f\u7528 MaterialPropertyBlock \u7ed8\u5236\u6811\u6728\uff0c\u5b83\u4eec\u90fd\u4f7f\u7528\u76f8\u540c\u7684\u6750\u8d28\uff0c\u4f46\u6bcf\u68f5\u6811\u90fd\u6709\u4e0d\u540c\u7684\u989c\u8272\u3001\u6bd4\u4f8b\u548c\u98ce\u7cfb\u6570\u3002
\n \u00a0 Note that this is not compatible with SRP Batcher. Using this in the Universal Render Pipeline (URP), High Definition Render Pipeline (HDRP) or a custom render pipeline based on the Scriptable Render Pipeline (SRP) will likely result in a drop in performance.
\n \u00a0 \u6b64\u5916\u8981\u6ce8\u610f\u7684\u662f\uff0cMaterialPropertyBlock\u4e0eSRP Batcher\u4e0d\u517c\u5bb9\uff0c\u5728URP\/HDRP\/SRP\u4e2d\u4f7f\u7528\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\u3002\uff08\u5b98\u65b9\u5410\u69fd\uff1a\u8c01\u77e5\u9053\u4f60\u4eec\u81ea\u5b9a\u4e49\u7684\u7ba1\u7ebf\u652f\u4e0d\u652f\u6301\u6211\u4eecMaterialPropertyBlock\u5440~\uff09<\/p>\n<\/blockquote>\n

 \u00a0 \u4ece\u5b98\u65b9\u6587\u6863\u4e2d\u5f88\u660e\u767d\u7684\u5c31\u80fd\u770b\u51fa\u6765\uff1a<\/p>\n

    \n
  • Block\u662f\u51cc\u9a7e\u4e8eMaterial\u4e4b\u4e0a\u7684\uff0c\u6bd4\u5982\u4f60\u4f7f\u7528Block\u8fdb\u884c\u7ed8\u5236\u989c\u8272\u7684\u65f6\u5019\uff0c\u539f\u672cmaterial\u4e0a\u7684\u989c\u8272\u5c31\u4f1a\u5931\u6548\u3002<\/li>\n
  • \u4f7f\u7528\u4e86Block\u53ef\u4ee5\u5b9e\u73b0\u76f8\u540c\u6750\u8d28\u8868\u73b0\u51fa\u4e0d\u4e00\u6837\u7684\u6548\u679c\u3002<\/li>\n<\/ul>\n

    2.\u90a3\u4e48\u8fd9\u4e2a\u73a9\u610f\u513f\u5230\u5e95\u600e\u4e48\u7528\u5462\uff1f<\/h3>\n

     \u00a0 Block\u53ef\u4ee5\u7528\u4f5c\u7ed8\u5236Mesh\u6216\u8005\u66f4\u6539Renderer\u4e0a\u7684\u6750\u8d28\u5c5e\u6027\uff0c\u6750\u8d28\u672c\u8d28\u4e0a\u5b58\u50a8\u7684\u662fshader\u4e2d\u4f7f\u7528\u7684\u5404\u79cd\u5c5e\u6027\u3002<\/p>\n

    \/\/\u66f4\u6539Renderer\u4e0a\u7684Block\nRenderer.SetPropertyBlock\n\/\/\u76f4\u63a5\u5728mesh\u4e0a\u7ed8\u5236\nGraphics.DrawMesh<\/code><\/pre>\n
     \u00a0 \u4e3e\u4e2a\u6817\u5b50\uff1a<\/p>\n
    public class ExampleClass : MonoBehaviour\n{\n    public Mesh mesh;\n    private MeshRenderer meshRenderer;\n    public Material material;\n    private MaterialPropertyBlock block;\n    private int colorID;\n    void Start()\n    {\n        block = new MaterialPropertyBlock();\n        colorID = Shader.PropertyToID("_Color");\n    }\n\n    void Update()\n    {\n        \/\/Block\u6709\u4e24\u79cd\u8bbe\u7f6e\u65b9\u5f0f\uff1a\n        \/\/\u901a\u8fc7\u6750\u8d28\u4e0a\u7684\u5c5e\u6027\u540d\u8bbe\u7f6e\n        block.SetColor("_Color", Color.red);\n        \/\/\u901a\u8fc7\u63d0\u524d\u83b7\u53d6\u5c5e\u6027ID\u8fdb\u884c\u8bbe\u7f6e\n        block.SetColor(colorID, Color.red);\n\n        \/\/\u76f4\u63a5\u5728mesh\u4e0a\u7ed8\u5236\n        Graphics.DrawMesh(mesh, new Vector3(0, 0, 0), Quaternion.identity, material, 0, null, 0, block);\n        \/\/\u66f4\u6539Renderer\u4e0a\u7684Block\n        meshRenderer.SetPropertyBlock(block);\n    }\n}<\/code><\/pre>\n
    3.\u6211\u60f3\u83b7\u53d6\u4e0a\u6b21\u8bbe\u7f6e\u7684Block\u8be5\u548b\u529e\uff1f<\/h3>\n
     \u00a0 \u6211\u5728\u4e0a\u4e00\u5e27\u4fee\u6539\u4e86\u5f88\u591aBlock\u5c5e\u6027\uff0c\u4f46\u662f\u8fd9\u4e00\u5e27\u53ea\u60f3\u6539\u53d8\u5176\u4e2d\u7684\u67d0\u4e00\u9879\u3002
    \n \u00a0 \u6216\u8005\u662f\u4e0a\u4e00\u5e27A\u8bbe\u7f6e\u4e86\u4e00\u5927\u5806Block\u5c5e\u6027\u8fdb\u53bb\uff0c\u8fd9\u4e00\u5e27B\u8981\u4fee\u6539\u5176\u4e2d\u7684\u67d0\u4e00\u9879\u3002
    \n \u00a0 Unity\u63d0\u4f9b\u4e86\u63a5\u53e3GetPropertyBlock<\/code><\/p>\n
    \n
    public void GetPropertyBlock(MaterialPropertyBlock properties);
    \npublic void GetPropertyBlock(MaterialPropertyBlock properties, int materialIndex);<\/p>\n<\/blockquote>\n
     \u00a0 \u4f46\u662f\u8fd9\u4e2a\u51fd\u6570\u660e\u660e\u53ebGet\uff0c\u4e3a\u4ec0\u4e48\u8fd4\u56de\u503c\u662f\u4e2avoid\u5462\uff1f<\/p>\n
    \n
    Get per-Renderer or per-Material property block.
    \nThe retrieved properties are stored in the property block passed in through "properties". If no properties are set, the property block is cleared. In either case the property block you pass in is completely overwritten.
    \n\u83b7\u53d6per-Renderer\u6216per-Material\u5c5e\u6027\u5757
    \n\u628a\u4e4b\u524d\u5b58\u50a8\u7684\u5c5e\u6027\u901a\u8fc7\u53c2\u6570properties\u8fdb\u884c\u6062\u590d\u3002\u5982\u679c\u4e4b\u524d\u6ca1\u8bbe\u7f6eBlock\uff0c\u5c31\u628aproperties\u6e05\u7a7a\u3002\uff08\u8fd9\u4e0d\u5c31\u662f\u4e2aref\u5417\uff1f\uff09
    \n\u4e0d\u7ba1\u600e\u6837\uff0c\u4f60\u4f20\u8fdb\u6765\u7684properties\u5c5e\u6027\u90fd\u4f1a\u88ab\u5b8c\u5168\u8986\u76d6\uff08\u4f55\u5fc5\u5462\uff0c\u4e3a\u5565\u4e0d\u52a0\u4e2aref\u5462\uff1f\u6211\u7784\u4e86\u4e00\u773cBlock\u4e5f\u4e0d\u662f\u7ed3\u6784\u4f53\u554a\uff09<\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"
    1.MaterialPropertyBlock  \u00a0 \u5b9a\u4e49\uff1aA block of mate […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[36],"tags":[],"class_list":["post-344","post","type-post","status-publish","format-standard","hentry","category-unity"],"_links":{"self":[{"href":"https:\/\/www.mapleriver.cn\/index.php?rest_route=\/wp\/v2\/posts\/344","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mapleriver.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mapleriver.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mapleriver.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mapleriver.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=344"}],"version-history":[{"count":3,"href":"https:\/\/www.mapleriver.cn\/index.php?rest_route=\/wp\/v2\/posts\/344\/revisions"}],"predecessor-version":[{"id":348,"href":"https:\/\/www.mapleriver.cn\/index.php?rest_route=\/wp\/v2\/posts\/344\/revisions\/348"}],"wp:attachment":[{"href":"https:\/\/www.mapleriver.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=344"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mapleriver.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=344"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mapleriver.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=344"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}