{"id":295,"date":"2024-11-10T22:01:23","date_gmt":"2024-11-10T14:01:23","guid":{"rendered":"http:\/\/chenglixue.top\/?p=295"},"modified":"2024-11-10T22:03:50","modified_gmt":"2024-11-10T14:03:50","slug":"%e6%a8%a1%e6%9d%bf%e7%bc%93%e5%86%b2%e5%8c%ba%e5%8f%8a%e6%a8%a1%e6%9d%bf%e6%b5%8b%e8%af%95","status":"publish","type":"post","link":"http:\/\/chenglixue.top\/?p=295","title":{"rendered":"\u6a21\u677f\u7f13\u51b2\u533a\u53ca\u6a21\u677f\u6d4b\u8bd5"},"content":{"rendered":"<p><div class=\"has-toc have-toc\"><\/div><\/p>\n<h1>\u524d\u8a00<\/h1>\n<p>Unity\u5173\u4e8e\u6a21\u677f\u7f13\u51b2\u533a\u548c\u6a21\u677f\u6d4b\u8bd5\u4e0edx12\u7c7b\u4f3c\uff0c\u4f46\u4e5f\u6709\u4e0d\u540c\uff0c\u672c\u6587\u5c06\u57fa\u4e8edx12 \u6765\u603b\u7ed3Unity\u4e2d\u7684\u6a21\u677f\u7f13\u51b2\u533a\u53ca\u6a21\u677f\u6d4b\u8bd5\u7684\u542b\u4e49<\/p>\n<h1>\u6a21\u677f\u7f13\u51b2\u533a<\/h1>\n<h2>\u4ec0\u4e48\u662f\u6a21\u677f\u7f13\u51b2\u533a?<\/h2>\n<ul>\n<li>\u6211\u4eec\u77e5\u9053\u6df1\u5ea6\u7f13\u51b2\u533a\u5b58\u50a8\u6bcf\u4e2a\u50cf\u7d20\u7684\u6df1\u5ea6\u503cz\uff0c\u800c\u6a21\u677f\u7f13\u51b2\u533a\u662f\u4e00\u4e2a\u989d\u5916\u7684buffer,\u5b83\u7684\u5206\u8fa8\u7387\u5927\u5c0f\u548c\u6df1\u5ea6\u7f13\u51b2\u533a\u76f8\u540c\uff0c\u4f46<span class=\"text-highlighted-inline\" style=\"background-color: #fffd38;\">\u6a21\u677f\u7f13\u51b2\u533a\u7684\u4e00\u4e2a\u50cf\u7d20\u70b9\u53608bit\uff0c\u4e14\u683c\u5f0f\u4e3aUINT<\/span>(\u683c\u5f0f\u6709\u4e24\u79cd\uff0c\u90fd\u4e3aUINT\uff0c\u4f46\u4e00\u79cd\u4ec5\u4ec58\u4f4dbit\uff1b\u53e6\u4e00\u79cd\u867d\u7136\u536032\u4f4d\uff0c\u4f46\u6709\u7528\u7684\u53ea\u6709\u524d8\u4f4d\uff0c\u5269\u4e0b\u768424\u4f4d\u4ec5\u7528\u4e8e\u586b\u5145)\uff0c\u800c\u8fd98bit\u7684\u4f5c\u7528\u4e4b\u4e00\u662f<span class=\"text-highlighted-inline\" style=\"background-color: #fffd38;\">\u63a7\u5236\u989c\u8272\u7f13\u51b2\u533a\u548cz\u7f13\u51b2\u533a\u7684\u6e32\u67d3<\/span>\uff0c\u6bd4\u5982\u5728\u4e00\u4e2a\u50cf\u7d20\u7684\u6a21\u677f\u7f13\u51b2\u533a\u4e2d\u5b58\u653e1\uff0c\u8868\u793a\u8be5\u50cf\u7d20\u5bf9\u5e94\u7684\u7a7a\u95f4\u70b9\u5904\u4e8e\u9634\u5f71\u4f53\u4e2d\n<p>\u6ce8\u610f\uff1a<span class=\"text-highlighted-inline\" style=\"background-color: #fffd38;\">\u6a21\u677f\u7f13\u51b2\u533a\u9700\u8981\u642d\u914d\u6df1\u5ea6\u7f13\u51b2\u533a\u4e00\u8d77\u5de5\u4f5c<\/span>\uff0c\u6240\u4ee5\u63a5\u4e0b\u6765\u4f1a\u7ecf\u5e38\u770b\u5230\u6df1\u5ea6\u7f13\u51b2\u533a\u7684\u8eab\u5f71<\/p>\n<\/li>\n<\/ul>\n<h2>\u4e3a\u4ec0\u4e48\u9700\u8981\u6a21\u677f\u7f13\u51b2\u533a\uff1f<\/h2>\n<ul>\n<li>\u6a21\u677f\u7f13\u51b2\u533a\u4e3b\u8981\u7528\u4e8e\u5b9e\u73b0\u7279\u6548\u3001\u8349\u8fd9\u6837\u7684\u9762\u7247<\/li>\n<li>\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u82e5\u5728\u6a21\u677f\u7f13\u51b2\u533a\u4e2d\u7ed8\u5236\u4e86\u4e00\u4e2a\u7a7a\u5fc3\u77e9\u5f62\uff0c\u6a21\u677f\u7f13\u51b2\u4e2d\u7684\u503c\u6700\u5f00\u59cb\u65f6\u4f1a\u88ab\u9ed8\u8ba4\u4e3a0\uff0c\u4e4b\u540e\u5728\u6a21\u677f\u7f13\u51b2\u533a\u4e2d\u4f7f\u75281\u586b\u5145\u4e86\u4e00\u4e2a\u7a7a\u5fc3\u77e9\u5f62\uff0c\u573a\u666f\u4e2d\u7684\u7247\u6bb5\u5c06\u4f1a\u53ea\u5728\u7247\u6bb5\u7684\u6a21\u677f\u503c\u4e3a1\u7684\u65f6\u5019\u4f1a\u88ab\u6e32\u67d3<br \/>\n<img decoding=\"async\"   class=\"lazyload\" data-src=\"https:\/\/pic.imgdb.cn\/item\/659f9fa5871b83018ab81987.jpg\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/moezx\/cdn@3.0.2\/img\/svg\/loader\/trans.ajax-spinner-preloader.svg\" onerror=\"imgError(this)\"  alt=\"\" \/><\/li >\n<noscript><img decoding=\"async\" src=\"https:\/\/pic.imgdb.cn\/item\/659f9fa5871b83018ab81987.jpg\" alt=\"\" \/><\/li><\/noscript>\n<\/ul>\n<h2>\u5982\u4f55\u4f7f\u7528\u6a21\u677f\u7f13\u51b2\u533a\uff1f<\/h2>\n<ul>\n<li>\n<p>\u5728DX12\u4e2d\uff0c\u9700\u8981\u586b\u5199<span class=\"text-highlighted-inline\" style=\"background-color: #fffd38;\">\u6a21\u677f\u7f13\u51b2\u533a\u7684\u63cf\u8ff0\u7b26<\/span>(D3D12_DEPTH_STENCIL_DESC)\u5e76\u5c06\u8be5\u63cf\u8ff0\u7b26\u586b\u5165<span class=\"text-highlighted-inline\" style=\"background-color: #fffd38;\">\u6e32\u67d3\u7ba1\u7ebf\u5bf9\u8c61<\/span>(D3D12_GRAPHICS_PIPELINE_STATE_DESC)<\/p>\n<\/li>\n<li>\n<p>\u4f46\u5728Unity\u4e2d\uff0c\u4e3a\u4e86\u63d0\u5347\u5f00\u53d1\u8005\u7684\u5f00\u53d1\u6548\u7387\uff0c\u5bf9\u6a21\u677f\u7f13\u51b2\u533a\u7684\u4f7f\u7528\u65b9\u5f0f\u8fdb\u884c\u4e86\u5c01\u88c5<\/p>\n<\/li>\n<li>\n<p>\u4f7f\u7528\u6846\u67b6\u5982\u4e0b<br \/>\n\u58f0\u660e Stencil\uff0c\u7136\u540e\u5728\u5173\u952e\u5b57\u540e\u586b\u5199\u9700\u8981\u7684\u5185\u5bb9\u5373\u53ef<\/p>\n<pre><code class=\"line-numbers\">Stencil\n{\n  Ref &lt;ref&gt;\n  ReadMask &lt;readMask&gt;\n  WriteMask &lt;writeMask&gt;\n  Comp &lt;comparisonOperation&gt;\n  Pass &lt;passOperation&gt;\n  Fail &lt;failOperation&gt;\n  ZFail &lt;zFailOperation&gt;\n  CompBack &lt;comparisonOperationBack&gt;\n  PassBack &lt;passOperationBack&gt;\n  FailBack &lt;failOperationBack&gt;\n  ZFailBack &lt;zFailOperationBack&gt;\n  CompFront &lt;comparisonOperationFront&gt;\n  PassFront &lt;passOperationFront&gt;\n  FailFront &lt;failOperationFront&gt;\n  ZFailFront &lt;zFailOperationFront&gt;\n}\n<\/code><\/pre>\n<p>\u5173\u4e8e\u8fd9\u4e9b\u5173\u952e\u8bcd\u7684\u542b\u4e49\u5728\u4e0b\u9762\u7684\u6a21\u677f\u6d4b\u8bd5\u4f1a\u8bb2\u5230<\/p>\n<\/li>\n<\/ul>\n<h1>\u6a21\u677f\u6d4b\u8bd5<\/h1>\n<h2>\u5b9a\u4e49<\/h2>\n<p>\u5141\u8bb8\u5f00\u53d1\u8005\u5728\u6e32\u67d3\u7247\u5143\u65f6\u5c06\u6a21\u677f\u7f13\u51b2\u533a\u4e2d\u7684\u503c\u8bbe\u5b9a\u4e3a\u4e00\u4e2a\u7279\u5b9a\u7684\u503c\uff0c\u901a\u8fc7\u5728\u6e32\u67d3\u65f6\u4fee\u6539\u6a21\u677f\u7f13\u51b2\u7684\u5185\u5bb9\uff0c\u5199\u5165\u6a21\u677f\u7f13\u51b2\u3002\u5728\u63a5\u4e0b\u6765\u7684\u6e32\u67d3\u8fed\u4ee3\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u8bfb\u53d6\u8fd9\u4e9b\u503c\uff0c\u6765<span class=\"text-highlighted-inline\" style=\"background-color: #fffd38;\">\u51b3\u5b9a\u4e22\u5f03\/\u4fdd\u7559\u67d0\u4e2a\u7247\u6bb5<\/span><\/p>\n<h2>\u6267\u884c\u9636\u6bb5<\/h2>\n<p>\u8f93\u51fa\u5408\u5e76\u9636\u6bb5\u3002\u5f53\u7247\u5143\u7740\u8272\u5668\u5904\u7406\u5b8c\u4e00\u4e2a\u7247\u6bb5\u4e4b\u540e\uff0c\u6a21\u677f\u6d4b\u8bd5(Stencil Test)\u4f1a\u5f00\u59cb\u6267\u884c<\/p>\n<h2>\u5927\u81f4\u6d41\u7a0b<\/h2>\n<ol>\n<li>\u542f\u7528\u6a21\u677f\u7f13\u51b2\u7684\u5199\u5165<\/li>\n<li>\u6e32\u67d3\u7269\u4f53\uff0c\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a<\/p>\n<\/li>\n<li>\n<p>\u7981\u7528\u6a21\u677f\u7f13\u51b2\u7684\u5199\u5165<\/p>\n<\/li>\n<li>\n<p>\u6e32\u67d3\uff08\u5176\u5b83\uff09\u7269\u4f53\uff0c\u8fd9\u6b21\u6839\u636e\u6a21\u677f\u7f13\u51b2\u7684\u5185\u5bb9\u4e22\u5f03\/\u4fdd\u7559\u7279\u5b9a\u7684\u7247\u6bb5<\/p>\n<\/li>\n<\/ol>\n<h2>\u4e22\u5f03\/\u4fdd\u7559\u7279\u5b9a\u7684\u7247\u6bb5\u7684\u8ba1\u7b97\u539f\u7406<\/h2>\n<p>if( StencilRef &amp; StencilReadMask <span class=\"katex math inline\">\\unlhd<\/span> Value &amp; StencilReadMask )<br \/>\n    accept pixel<br \/>\nelse<br \/>\n    reject pixel<\/p>\n<ul>\n<li>\u200b    StencilRef \uff08\u5bf9\u5e94Unity\u7684<span class=\"text-highlighted-inline\" style=\"background-color: #fffd38;\">Ref<\/span>\uff09\uff1a\u6a21\u677f\u53c2\u8003\u503c\u3002UINT\uff0c\u8303\u56f4[0, 255]\uff0c\u9ed8\u8ba40<\/p>\n<\/li>\n<li>\n<p>\u200b    StencilReadMask\uff08\u5bf9\u5e94Unity\u7684<span class=\"text-highlighted-inline\" style=\"background-color: #fffd38;\">ReadMask<\/span>\uff09\uff1a\u5728\u6a21\u677f\u6d4b\u8bd5\u65f6\u4f7f\u7528\u63a9\u7801\u503c\u3002UINT\uff0c\u8303\u56f4[0, 255]\uff0c\u9ed8\u8ba4255\uff080xff\uff09<\/p>\n<\/li>\n<li>\n<p>\u200b    <span class=\"katex math inline\">\\unlhd<\/span>\uff08\u5bf9\u5e94Unity\u7684<span class=\"text-highlighted-inline\" style=\"background-color: #fffd38;\">Comp<\/span>\uff09\uff1a\u6bd4\u8f83\u51fd\u6570\uff0c\u7528\u4e8e\u6bd4\u8f83\u5de6\u53f3\u4e24\u8fb9\u7684\u503c\uff0c\u82e5\u4e3atrue\uff0c\u5219\u901a\u8fc7\u6a21\u677f\u6d4b\u8bd5\uff1b\u5426\u5219\uff0c\u5931\u8d25<\/p>\n<\/li>\n<li>\n<p>\u200b    Comp<\/p>\n<ul>\n<li>\u5728DX12\u4e2d\uff0c\u901a\u8fc7\u4f7f\u7528enum D3D12_COMPARISON_FUNC\u4e2d\u7684\u7279\u5b9a\u503c\u6765\u786e\u5b9a\u6bd4\u8f83\u51fd\u6570<\/li>\n<\/ul>\n<pre><code class=\"line-numbers\">\/\/\u4ee5\u4e0b\u6bd4\u8f83\u8fd0\u7b97\u7b26\u8fd4\u56detrue\u5219\u901a\u8fc7\u6d4b\u8bd5\ntypedef enum D3D12_COMPARISON_FUNC {\n  D3D12_COMPARISON_FUNC_NEVER = 1,  \/\/\u53ea\u8fd4\u56defalse.\u6c38\u8fdc\u4e0d\u901a\u8fc7\u6df1\u5ea6\u6d4b\u8bd5\n  D3D12_COMPARISON_FUNC_LESS = 2,   \/\/\"&lt;\".\u7247\u6bb5\u6df1\u5ea6\u503c\u5c0f\u4e8e\u7f13\u51b2\u533a\u7684\u6df1\u5ea6\u503c\n  D3D12_COMPARISON_FUNC_EQUAL = 3,  \/\/\"==\".\u7247\u6bb5\u6df1\u5ea6\u503c\u7b49\u4e8e\u7f13\u51b2\u533a\u7684\u6df1\u5ea6\u503c\n  D3D12_COMPARISON_FUNC_LESS_EQUAL = 4, \/\/\"\u2264\".\u7247\u6bb5\u6df1\u5ea6\u503c\u5c0f\u4e8e\u7b49\u4e8e\u7f13\u51b2\u533a\u7684\u6df1\u5ea6\u503c\n  D3D12_COMPARISON_FUNC_GREATER = 5,    \/\/\"&gt;\".\u7247\u6bb5\u6df1\u5ea6\u503c\u5927\u4e8e\u7f13\u51b2\u533a\u7684\u6df1\u5ea6\u503c\n  D3D12_COMPARISON_FUNC_NOT_EQUAL = 6,  \/\/\"!=\".\u7247\u6bb5\u6df1\u5ea6\u503c\u4e0d\u7b49\u4e8e\u7f13\u51b2\u533a\u7684\u6df1\u5ea6\u503c\n  D3D12_COMPARISON_FUNC_GREATER_EQUAL = 7,  \/\/\"\u2265\".\u7247\u6bb5\u6df1\u5ea6\u503c\u5927\u4e8e\u7b49\u4e8e\u7f13\u51b2\u533a\u7684\u6df1\u5ea6\u503c\n  D3D12_COMPARISON_FUNC_ALWAYS = 8  \/\/\u53ea\u8fd4\u56detrue.\u6c38\u8fdc\u901a\u8fc7\u6df1\u5ea6\u6d4b\u8bd5\n} ;\n<\/code><\/pre>\n<ul>\n<li>\u5728Unity\u4e2d\uff0c\u5bf9\u6bd4\u8f83\u51fd\u6570\u8fdb\u884c\u4e86\u7b80\u5316\u66f4\u52a0\u76f4\u89c2<\/li>\n<\/ul>\n<pre><code class=\"line-numbers\">enum CompareFunction\n{\n    Never = 1,\n    Less = 2,\n    Equal = 3,\n    LEqual = 4,\n    Greater = 5,\n    NotEqual = 6,\n    GEqual = 7,\n    Always = 8\n};\n<\/code><\/pre>\n<\/li>\n<\/ul>\n<h2>\u6a21\u677f\u6d4b\u8bd5\u540e\u7684\u903b\u8f91<\/h2>\n<p>\u4e0d\u7ba1\u8be5\u7247\u5143\u7684\u6a21\u677f\u6d4b\u8bd5\u662f\u5426\u901a\u8fc7\uff0c\u90fd\u9700\u8981\u7531\u5f00\u53d1\u8005\u6765<span class=\"text-highlighted-inline\" style=\"background-color: #fffd38;\">\u51b3\u5b9a\u5176\u53bb\u7559<\/span><\/p>\n<ul>\n<li>\u5728DX12\u4e2d\uff0c\u586b\u5199\u63cf\u8ff0\u7b26D3D12_DEPTH_STENCILOP_DESC\u6765\u51b3\u5b9a\n<pre><code class=\"line-numbers\">typedef struct D3D12_DEPTH_STENCILOP_DESC {\nD3D12_STENCIL_OP      StencilFailOp;    \/\/\u63cf\u8ff0\u5f53\u7247\u5143\u5728\u6a21\u677f\u6d4b\u8bd5\u5931\u8d25\u65f6\uff0c\u5e94\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a\nD3D12_STENCIL_OP      StencilDepthFailOp;   \/\/\u63cf\u8ff0\u5f53\u7247\u5143\u901a\u8fc7\u6a21\u677f\u6d4b\u8bd5\uff0c\u4f46\u5728\u6df1\u5ea6\u6d4b\u8bd5\u5931\u8d25\u65f6\uff0c\u5e94\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a\nD3D12_STENCIL_OP      StencilPassOp;    \/\/\u63cf\u8ff0\u5f53\u7247\u5143\u901a\u8fc7\u6a21\u677f\u6d4b\u8bd5\u3001\u6df1\u5ea6\u6d4b\u8bd5\u65f6\uff0c\u5e94\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a\nD3D12_COMPARISON_FUNC StencilFunc;  \/\/\u6a21\u677f\u6d4b\u8bd5\u4e2d\u6240\u7528\u7684\u6bd4\u8f83\u51fd\u6570\n} D3D12_DEPTH_STENCILOP_DESC;\n\n\/\/\u6307\u5b9a\u5728\u6df1\u5ea6\/\u6a21\u677f\u6d4b\u8bd5\u671f\u95f4\u88ab\u6267\u884c\u7684\u6a21\u677f\u8fd0\u7b97\u7b26\ntypedef enum D3D12_STENCIL_OP {\nD3D12_STENCIL_OP_KEEP = 1,  \/\/ \u4e0d\u4fee\u6539\u6a21\u677f\u7f13\u51b2\u533a\nD3D12_STENCIL_OP_ZERO = 2,  \/\/ \u5c06\u6a21\u677f\u7f13\u51b2\u533a\u4e2d\u7684\u5143\u7d20\u7f6e\u4e3a0\nD3D12_STENCIL_OP_REPLACE = 3,   \/\/ \u5c06\u6a21\u677f\u7f13\u51b2\u533a\u4e2d\u7684\u5143\u7d20\u66ff\u6362\u4e3a\u7528\u4e8e\u6a21\u677f\u6d4b\u8bd5\u7684\u6a21\u677f\u53c2\u8003\u503c(StencilRef).\u53ea\u6709\u5f53\u6df1\u5ea6\/\u6a21\u677f\u7f13\u51b2\u533a\u72b6\u6001\u5757\u7ed1\u5b9a\u81f3\u7ba1\u7ebf\u65f6\uff0c\u624d\u80fd\u8bbe\u5b9a\u8be5\u503c\nD3D12_STENCIL_OP_INCR_SAT = 4,\/\/ \u5bf9\u6a21\u677f\u7f13\u51b2\u533a\u4e2d\u7684\u5143\u7d20\u8fdb\u884c\u9012\u589e.\u82e5\u8d85\u51fa\u8303\u56f4\u4f1a\u8fdb\u884c\u94b3\u5236\nD3D12_STENCIL_OP_DECR_SAT = 5,\/\/ \u5bf9\u6a21\u677f\u7f13\u51b2\u533a\u4e2d\u7684\u5143\u7d20\u8fdb\u884c\u9012\u51cf.\u82e5\u8d85\u51fa\u8303\u56f4\u4f1a\u8fdb\u884c\u94b3\u5236\nD3D12_STENCIL_OP_INVERT = 6,    \/\/ \u5bf9\u6a21\u677f\u7f13\u51b2\u533a\u4e2d\u7684\u5143\u7d20\u6309\u4e8c\u8fdb\u5236\u4f4d\u8fdb\u884c\u53cd\u8f6c\nD3D12_STENCIL_OP_INCR = 7,  \/\/ \u5bf9\u6a21\u677f\u7f13\u51b2\u533a\u4e2d\u7684\u5143\u7d20\u8fdb\u884c\u9012\u589e.\u82e5\u8d85\u51fa\u8303\u56f4\u4f1a\u56de\u5230\u6700\u5c0f\u503c0\nD3D12_STENCIL_OP_DECR = 8       \/\/ \u5bf9\u6a21\u677f\u7f13\u51b2\u533a\u4e2d\u7684\u5143\u7d20\u8fdb\u884c\u9012\u589e.\u82e5\u8d85\u51fa\u8303\u56f4\u4f1a\u56de\u5230\u6700\u5927\u503c255\n} ;\n<\/code><\/pre>\n<\/li>\n<li>\u5728Unity\u4e2d\uff0c\u5bf9\u5176\u8fdb\u884c\u4e86\u7b80\u5316\n<pre><code class=\"line-numbers\">enum StencilOp\n{\nKeep = 0,       \/\/ \u4e0d\u4fee\u6539\u6a21\u677f\u7f13\u51b2\u533a\nZero = 1,       \/\/ \u5c06\u6a21\u677f\u7f13\u51b2\u533a\u4e2d\u7684\u5143\u7d20\u7f6e\u4e3a0\nReplace = 2,    \/\/ \u5c06\u6a21\u677f\u7f13\u51b2\u533a\u4e2d\u7684\u5143\u7d20\u66ff\u6362\u4e3a\u6a21\u677f\u53c2\u8003\u503c(Ref)\nIncrSat = 3,    \/\/ \u5bf9\u6a21\u677f\u7f13\u51b2\u533a\u4e2d\u7684\u5143\u7d20\u8fdb\u884c\u9012\u589e.\u82e5\u8d85\u51fa\u8303\u56f4\u4f1aclamp\nDecrSat = 4,    \/\/ \u5bf9\u6a21\u677f\u7f13\u51b2\u533a\u4e2d\u7684\u5143\u7d20\u8fdb\u884c\u9012\u51cf.\u82e5\u8d85\u51fa\u8303\u56f4\u4f1a\u8fdb\u884cclamp\nInvert = 5,     \/\/ \u5bf9\u6a21\u677f\u7f13\u51b2\u533a\u4e2d\u7684\u5143\u7d20\u6309\u4e8c\u8fdb\u5236\u4f4d\u8fdb\u884c\u53cd\u8f6c\nIncrWrap = 6,   \/\/ \u5bf9\u6a21\u677f\u7f13\u51b2\u533a\u4e2d\u7684\u5143\u7d20\u8fdb\u884c\u9012\u589e.\u82e5\u8d85\u51fa\u8303\u56f4\u4f1a\u56de\u5230\u6700\u5c0f\u503c0\nDecrWrap = 7    \/\/ \u5bf9\u6a21\u677f\u7f13\u51b2\u533a\u4e2d\u7684\u5143\u7d20\u8fdb\u884c\u9012\u589e.\u82e5\u8d85\u51fa\u8303\u56f4\u4f1a\u56de\u5230\u6700\u5927\u503c255\n}\n<\/code><\/pre>\n<\/li>\n<\/ul>\n<h1>\u5b9a\u4e49\u6df1\u5ea6\/\u6a21\u677f\u72b6\u6001<\/h1>\n<p>\u6700\u540e\uff0c\u9700\u8981\u5b9a\u4e49\u6df1\u5ea6\/\u6a21\u677f\u7f13\u51b2\u533a\u72b6\u6001\uff1a\u5305\u62ec<span class=\"text-highlighted-inline\" style=\"background-color: #fffd38;\">\u662f\u5426\u542f\u7528\u6df1\u5ea6\/\u6a21\u677f\u6d4b\u8bd5\uff0c\u6bd4\u8f83\u51fd\u6570\uff0c\u662f\u5426\u8fdb\u884c\u6df1\u5ea6\/\u6a21\u677f\u5199\u5165\uff0c\u5bf9\u6a21\u578b\u7684\u6b63\u9762\u548c\u80cc\u9762\u505a\u4ec0\u4e48\u6a21\u677f\u8fd0\u7b97<\/span><\/p>\n<ul>\n<li>\u5728DX12\u4e2d\uff0c\u9700\u8981\u586b\u5199\u63cf\u8ff0\u7b26D3D12_DEPTH_STENCIL_DESC\n<pre><code class=\"line-numbers\">typedef struct D3D12_DEPTH_STENCIL_DESC {\nBOOL                       DepthEnable; \/\/ \u662f\u5426\u5f00\u542f\u6df1\u5ea6\u6d4b\u8bd5,TRUE\u5219\u5f00\u542f.\u9ed8\u8ba4TRUE\nD3D12_DEPTH_WRITE_MASK     DepthWriteMask;  \/\/ \u662f\u5426\u7981\u6b62\u6df1\u5ea6\u5199\u5165,\u82e5\u4e3aD3D12_DEPTH_WRITE_MASK_ZERO\u5219\u4e0d\u53ef\u8fdb\u884c\u6df1\u5ea6\u5199\u5165\uff0c\u82e5\u4e3aD3D12_DEPTH_WRITE_MASK_ALL\u5219\u53ef\u4ee5.\u9ed8\u8ba4D3D12_DEPTH_WRITE_MASK_ALL\nD3D12_COMPARISON_FUNC      DepthFunc;       \/\/ \u6307\u5b9a\u6bd4\u8f83\u51fd\u6570\nBOOL                       StencilEnable;   \/\/ \u662f\u5426\u5f00\u542f\u6a21\u677f\u6d4b\u8bd5,\u82e5\u4e3atrue\u5219\u5f00\u542f.\u9ed8\u8ba4FALSE\nUINT8                      StencilReadMask; \/\/ \u63a9\u7801\u503c\uff0c\u7528\u4e8e\u6a21\u677f\u6d4b\u8bd5\nUINT8                      StencilWriteMask;    \/\/ \u63a9\u7801\u503c\uff0c\u7528\u4e8e\u5c4f\u853d\u5bf9\u5e94\u4f4d\u7684\u5199\u5165\u64cd\u4f5c\nD3D12_DEPTH_STENCILOP_DESC FrontFace;       \/\/\u6307\u793a\u6839\u636e\u6d4b\u8bd5\u548c\u6df1\u5ea6\u6d4b\u8bd5\u7684\u7ed3\u679c\uff0c\u5bf9\u6b63\u9762\u671d\u5411\u7684\u4e09\u89d2\u5f62\u8fdb\u884c\u6307\u5b9a\u7684\u6a21\u677f\u8fd0\u7b97\nD3D12_DEPTH_STENCILOP_DESC BackFace;        \/\/\u6307\u793a\u6839\u636e\u6d4b\u8bd5\u548c\u6df1\u5ea6\u6d4b\u8bd5\u7684\u7ed3\u679c\uff0c\u5bf9\u80cc\u9762\u671d\u5411\u7684\u4e09\u89d2\u5f62\u8fdb\u884c\u6307\u5b9a\u7684\u6a21\u677f\u8fd0\u7b97\n} D3D12_DEPTH_STENCIL_DESC;\n\n\/\/\u662f\u5426\u7981\u6b62\u6df1\u5ea6\u5199\u5165\ntypedef enum D3D12_DEPTH_WRITE_MASK {\nD3D12_DEPTH_WRITE_MASK_ZERO = 0,\nD3D12_DEPTH_WRITE_MASK_ALL = 1\n} ;\n\n\/\/\u7528\u4e8e\u6a21\u677f\u6d4b\u8bd5\u7684\u63a9\u7801\u503c\u7684\u9ed8\u8ba4\u503c\u2014\u2014\u4e0d\u4f1a\u5c4f\u853d\u4efb\u4f55\u4e00\u4f4d\u6a21\u677f\u503c\n#define D3D12_DEFAULT_STENCIL_READ_MASK (0xff)\n\n\/\/\u5199\u63a9\u7801\u503c\u7684\u9ed8\u8ba4\u503c\u2014\u2014\u4e0d\u4f1a\u5c4f\u853d\u4efb\u4f55\u4e00\u4f4d\u6a21\u677f\u503c\n#define D3D12_DEFAULT_STENCIL_WRITE_MASK (0xff)\n<\/code><\/pre>\n<\/li>\n<li>\u5728Unity\u4e2d\uff0c\u5bf9\u4e8e\u6df1\u5ea6\u6d4b\u8bd5\/\u5199\u5165\u548c\u6a21\u677f\u6d4b\u8bd5\/\u5199\u5165\u7684\u5904\u7406\u662f\u5206\u5f00\u7684\uff0c\u56e0\u6b64\u8fd9\u91cc\u53ea\u63d0\u53ca\u6a21\u677f\n<pre><code class=\"line-numbers\">Stencil\n{\nPass &lt;passOperation&gt;    \/\/ \u901a\u8fc7\u6a21\u677f\u3001\u6df1\u5ea6\u6d4b\u8bd5\u540e\uff0c\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a(\u53cc\u9762)\n  Fail &lt;failOperation&gt;  \/\/ \u672a\u901a\u8fc7\u6a21\u677f\u6d4b\u8bd5\u540e\uff0c\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a(\u53cc\u9762)\n  ZFail &lt;zFailOperation&gt;    \/\/ \u901a\u8fc7\u6a21\u677f\u6d4b\u8bd5\uff0c\u4f46\u672a\u901a\u8fc7\u6df1\u5ea6\u6d4b\u8bd5\uff0c\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a(\u53cc\u9762)\n  CompBack &lt;comparisonOperationBack&gt;    \/\/ \u4e3a\u6a21\u578b\u7684\u80cc\u9762\u5b9a\u4e49\u7684\u6bd4\u8f83\u51fd\u6570\n  PassBack &lt;passOperationBack&gt;  \/\/ \u901a\u8fc7\u6a21\u677f\u3001\u6df1\u5ea6\u6d4b\u8bd5\u540e\uff0c\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a(\u80cc\u9762)\n  FailBack &lt;failOperationBack&gt;  \/\/ \u672a\u901a\u8fc7\u6a21\u677f\u6d4b\u8bd5\u540e\uff0c\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a(\u80cc\u9762)\n  ZFailBack &lt;zFailOperationBack&gt;    \/\/ \u901a\u8fc7\u6a21\u677f\u6d4b\u8bd5\uff0c\u4f46\u672a\u901a\u8fc7\u6df1\u5ea6\u6d4b\u8bd5\uff0c\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a(\u80cc\u9762)\n  CompFront &lt;comparisonOperationFront&gt;  \/\/ \u4e3a\u6a21\u578b\u7684\u6b63\u9762\u5b9a\u4e49\u7684\u6bd4\u8f83\u51fd\u6570\n  PassFront &lt;passOperationFront&gt;    \/\/ \u901a\u8fc7\u6a21\u677f\u3001\u6df1\u5ea6\u6d4b\u8bd5\u540e\uff0c\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a(\u6b63\u9762)\n  FailFront &lt;failOperationFront&gt;    \/\/ \u672a\u901a\u8fc7\u6a21\u677f\u6d4b\u8bd5\u540e\uff0c\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a(\u6b63\u9762)\n  ZFailFront &lt;zFailOperationFront&gt;  \/\/ \u901a\u8fc7\u6a21\u677f\u6d4b\u8bd5\uff0c\u4f46\u672a\u901a\u8fc7\u6df1\u5ea6\u6d4b\u8bd5\uff0c\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a(\u6b63\u9762)\n}\n<\/code><\/pre>\n<\/li>\n<\/ul>\n<h1>\u603b\u7ed3<\/h1>\n<ul>\n<li>\u4e0d\u96be\u770b\u51fa\uff0c\u6a21\u677f\u4e0e\u6df1\u5ea6\u76f8\u5dee\u65e0\u51e0\uff0c\u53ea\u662f\u6a21\u677f\u6d4b\u8bd5\u7684\u8fd0\u7b97\u903b\u8f91\u66f4\u52a0\u590d\u6742\uff0c\u4f46\u672c\u8d28\u548c\u6df1\u5ea6\u7f13\u51b2\u533a\u4e00\u6837\uff0c\u90fd\u662f\u8fdb\u884c\u6d4b\u8bd5\u7559\u4e0b\u5f00\u53d1\u8005\u60f3\u8981\u7684\u90e8\u5206<\/p>\n<\/li>\n<li>\n<p>\u6700\u540e\uff0c\u603b\u7ed3\u4e00\u4e0bUnity\u4e2dStencil\u7684\u4f7f\u7528\u65b9\u6cd5\u548c\u5404\u53c2\u6570\u7684\u542b\u4e49<\/p>\n<pre><code class=\"line-numbers\">Stencil\n{\n  Ref &lt;ref&gt;                         \/\/ \u53c2\u8003\u503c\uff0c\u6bd4\u8f83\u51fd\u6570\u6bd4\u8f83\u7684\u5bf9\u8c61.UINT\uff0c\u8303\u56f4[0, 255]\uff0c\u9ed8\u8ba40\n  ReadMask &lt;readMask&gt;                   \/\/ \u5728\u6a21\u677f\u6d4b\u8bd5\u65f6\uff0c\u4f7f\u7528\u6b64\u503c\u4f5c\u4e3a\u906e\u7f69.UINT\uff0c\u8303\u56f4[0, 255]\uff0c\u9ed8\u8ba4255\n  WriteMask &lt;writeMask&gt;             \/\/ \u5728\u5199\u5165\u6a21\u677f\u7f13\u51b2\u533a\uff0c\u4f7f\u7528\u6b64\u503c\u4f5c\u4e3a\u906e\u7f69.UINT\uff0c\u8303\u56f4[0, 255]\uff0c\u9ed8\u8ba4255\n  Comp &lt;comparisonOperation&gt;            \/\/ \u6bd4\u8f83\u51fd\u6570\n  Pass &lt;passOperation&gt;              \/\/ \u901a\u8fc7\u6a21\u677f\u3001\u6df1\u5ea6\u6d4b\u8bd5\u540e\uff0c\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a(\u53cc\u9762)\n  Fail &lt;failOperation&gt;              \/\/ \u672a\u901a\u8fc7\u6a21\u677f\u6d4b\u8bd5\u540e\uff0c\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a(\u53cc\u9762)\n  ZFail &lt;zFailOperation&gt;                \/\/ \u901a\u8fc7\u6a21\u677f\u6d4b\u8bd5\uff0c\u4f46\u672a\u901a\u8fc7\u6df1\u5ea6\u6d4b\u8bd5\uff0c\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a(\u53cc\u9762)\n  CompBack &lt;comparisonOperationBack&gt;    \/\/ \u4e3a\u6a21\u578b\u7684\u80cc\u9762\u5b9a\u4e49\u7684\u6bd4\u8f83\u51fd\u6570\n  PassBack &lt;passOperationBack&gt;      \/\/ \u901a\u8fc7\u6a21\u677f\u3001\u6df1\u5ea6\u6d4b\u8bd5\u540e\uff0c\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a(\u80cc\u9762)\n  FailBack &lt;failOperationBack&gt;      \/\/ \u672a\u901a\u8fc7\u6a21\u677f\u6d4b\u8bd5\u540e\uff0c\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a(\u80cc\u9762)\n  ZFailBack &lt;zFailOperationBack&gt;        \/\/ \u901a\u8fc7\u6a21\u677f\u6d4b\u8bd5\uff0c\u4f46\u672a\u901a\u8fc7\u6df1\u5ea6\u6d4b\u8bd5\uff0c\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a(\u80cc\u9762)\n  CompFront &lt;comparisonOperationFront&gt;\/\/ \u4e3a\u6a21\u578b\u7684\u6b63\u9762\u5b9a\u4e49\u7684\u6bd4\u8f83\u51fd\u6570\n  PassFront &lt;passOperationFront&gt;        \/\/ \u901a\u8fc7\u6a21\u677f\u3001\u6df1\u5ea6\u6d4b\u8bd5\u540e\uff0c\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a(\u6b63\u9762)\n  FailFront &lt;failOperationFront&gt;        \/\/ \u672a\u901a\u8fc7\u6a21\u677f\u6d4b\u8bd5\u540e\uff0c\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a(\u6b63\u9762)\n  ZFailFront &lt;zFailOperationFront&gt;  \/\/ \u901a\u8fc7\u6a21\u677f\u6d4b\u8bd5\uff0c\u4f46\u672a\u901a\u8fc7\u6df1\u5ea6\u6d4b\u8bd5\uff0c\u5982\u4f55\u66f4\u65b0\u6a21\u677f\u7f13\u51b2\u533a(\u6b63\u9762)\n}\n<\/code><\/pre>\n<\/li>\n<\/ul>\n<h1>reference<\/h1>\n<p><a class=\"wp-editor-md-post-content-link\" href=\"https:\/\/docs.unity3d.com\/cn\/2021.3\/Manual\/SL-Stencil.html\" target=\"_blank\"  rel=\"nofollow\" >ShaderLab \u547d\u4ee4\uff1a\u6a21\u677f<\/a><\/p>\n<p>Directx12 3D \u6e38\u620f\u5f00\u53d1\u5b9e\u6218<\/p>\n<p>https:\/\/github.com\/QianMo\/Game-Programmer-Study-Notes<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u8a00 Unity\u5173\u4e8e\u6a21\u677f\u7f13\u51b2\u533a\u548c\u6a21\u677f\u6d4b\u8bd5\u4e0edx12\u7c7b\u4f3c\uff0c\u4f46\u4e5f\u6709\u4e0d\u540c\uff0c\u672c\u6587\u5c06\u57fa\u4e8edx12 \u6765\u603b\u7ed3Unity\u4e2d\u7684\u6a21\u677f\u7f13\u51b2\u533a\u53ca\u6a21\u677f\u6d4b\u8bd5\u7684 &#8230;<\/p>","protected":false},"author":1,"featured_media":277,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"_links":{"self":[{"href":"http:\/\/chenglixue.top\/index.php?rest_route=\/wp\/v2\/posts\/295"}],"collection":[{"href":"http:\/\/chenglixue.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/chenglixue.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/chenglixue.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/chenglixue.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=295"}],"version-history":[{"count":3,"href":"http:\/\/chenglixue.top\/index.php?rest_route=\/wp\/v2\/posts\/295\/revisions"}],"predecessor-version":[{"id":298,"href":"http:\/\/chenglixue.top\/index.php?rest_route=\/wp\/v2\/posts\/295\/revisions\/298"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/chenglixue.top\/index.php?rest_route=\/wp\/v2\/media\/277"}],"wp:attachment":[{"href":"http:\/\/chenglixue.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=295"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/chenglixue.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=295"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/chenglixue.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=295"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}