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2.8 KiB
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1 line
2.8 KiB
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{"version":3,"file":"checkMaxIfStatementsInShader.mjs","sources":["../../../../../src/rendering/batcher/gl/utils/checkMaxIfStatementsInShader.ts"],"sourcesContent":["import type { GlRenderingContext } from '../../../renderers/gl/context/GlRenderingContext';\n\nconst fragTemplate = [\n 'precision mediump float;',\n 'void main(void){',\n 'float test = 0.1;',\n '%forloop%',\n 'gl_FragColor = vec4(0.0);',\n '}',\n].join('\\n');\n\nfunction generateIfTestSrc(maxIfs: number): string\n{\n let src = '';\n\n for (let i = 0; i < maxIfs; ++i)\n {\n if (i > 0)\n {\n src += '\\nelse ';\n }\n\n if (i < maxIfs - 1)\n {\n src += `if(test == ${i}.0){}`;\n }\n }\n\n return src;\n}\n\nexport function checkMaxIfStatementsInShader(maxIfs: number, gl: GlRenderingContext): number\n{\n if (maxIfs === 0)\n {\n throw new Error('Invalid value of `0` passed to `checkMaxIfStatementsInShader`');\n }\n\n const shader = gl.createShader(gl.FRAGMENT_SHADER);\n\n try\n {\n while (true) // eslint-disable-line no-constant-condition\n {\n const fragmentSrc = fragTemplate.replace(/%forloop%/gi, generateIfTestSrc(maxIfs));\n\n gl.shaderSource(shader, fragmentSrc);\n gl.compileShader(shader);\n\n if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS))\n {\n maxIfs = (maxIfs / 2) | 0;\n }\n else\n {\n // valid!\n break;\n }\n }\n }\n finally\n {\n gl.deleteShader(shader);\n }\n\n return maxIfs;\n}\n"],"names":[],"mappings":";AAEA,MAAM,YAAe,GAAA;AAAA,EACjB,0BAAA;AAAA,EACA,kBAAA;AAAA,EACA,mBAAA;AAAA,EACA,WAAA;AAAA,EACA,2BAAA;AAAA,EACA,GAAA;AACJ,CAAA,CAAE,KAAK,IAAI,CAAA,CAAA;AAEX,SAAS,kBAAkB,MAC3B,EAAA;AACI,EAAA,IAAI,GAAM,GAAA,EAAA,CAAA;AAEV,EAAA,KAAA,IAAS,CAAI,GAAA,CAAA,EAAG,CAAI,GAAA,MAAA,EAAQ,EAAE,CAC9B,EAAA;AACI,IAAA,IAAI,IAAI,CACR,EAAA;AACI,MAAO,GAAA,IAAA,SAAA,CAAA;AAAA,KACX;AAEA,IAAI,IAAA,CAAA,GAAI,SAAS,CACjB,EAAA;AACI,MAAA,GAAA,IAAO,cAAc,CAAC,CAAA,KAAA,CAAA,CAAA;AAAA,KAC1B;AAAA,GACJ;AAEA,EAAO,OAAA,GAAA,CAAA;AACX,CAAA;AAEgB,SAAA,4BAAA,CAA6B,QAAgB,EAC7D,EAAA;AACI,EAAA,IAAI,WAAW,CACf,EAAA;AACI,IAAM,MAAA,IAAI,MAAM,+DAA+D,CAAA,CAAA;AAAA,GACnF;AAEA,EAAA,MAAM,MAAS,GAAA,EAAA,CAAG,YAAa,CAAA,EAAA,CAAG,eAAe,CAAA,CAAA;AAEjD,EACA,IAAA;AACI,IAAA,OAAO,IACP,EAAA;AACI,MAAA,MAAM,cAAc,YAAa,CAAA,OAAA,CAAQ,aAAe,EAAA,iBAAA,CAAkB,MAAM,CAAC,CAAA,CAAA;AAEjF,MAAG,EAAA,CAAA,YAAA,CAAa,QAAQ,WAAW,CAAA,CAAA;AACnC,MAAA,EAAA,CAAG,cAAc,MAAM,CAAA,CAAA;AAEvB,MAAA,IAAI,CAAC,EAAG,CAAA,kBAAA,CAAmB,MAAQ,EAAA,EAAA,CAAG,cAAc,CACpD,EAAA;AACI,QAAA,MAAA,GAAU,SAAS,CAAK,GAAA,CAAA,CAAA;AAAA,OAG5B,MAAA;AAEI,QAAA,MAAA;AAAA,OACJ;AAAA,KACJ;AAAA,GAEJ,SAAA;AAEI,IAAA,EAAA,CAAG,aAAa,MAAM,CAAA,CAAA;AAAA,GAC1B;AAEA,EAAO,OAAA,MAAA,CAAA;AACX;;;;"} |