pixi.js/lib/scene/text/sdfShader/shader-bits/mSDFBit.mjs.map

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{"version":3,"file":"mSDFBit.mjs","sources":["../../../../../src/scene/text/sdfShader/shader-bits/mSDFBit.ts"],"sourcesContent":["/** @internal */\nexport const mSDFBit = {\n    name: 'msdf-bit',\n    fragment: {\n        header: /* wgsl */`\n            fn calculateMSDFAlpha(msdfColor:vec4<f32>, shapeColor:vec4<f32>, distance:f32) -> f32 {\n\n                // MSDF\n                var median = msdfColor.r + msdfColor.g + msdfColor.b -\n                    min(msdfColor.r, min(msdfColor.g, msdfColor.b)) -\n                    max(msdfColor.r, max(msdfColor.g, msdfColor.b));\n\n                // SDF\n                median = min(median, msdfColor.a);\n\n                var screenPxDistance = distance * (median - 0.5);\n                var alpha = clamp(screenPxDistance + 0.5, 0.0, 1.0);\n                if (median < 0.01) {\n                    alpha = 0.0;\n                } else if (median > 0.99) {\n                    alpha = 1.0;\n                }\n\n                // Gamma correction for coverage-like alpha\n                var luma: f32 = dot(shapeColor.rgb, vec3<f32>(0.299, 0.587, 0.114));\n                var gamma: f32 = mix(1.0, 1.0 / 2.2, luma);\n                var coverage: f32 = pow(shapeColor.a * alpha, gamma);\n\n                return coverage;\n\n            }\n        `,\n    }\n\n};\n\n/** @internal */\nexport const mSDFBitGl = {\n    name: 'msdf-bit',\n    fragment: {\n        header: /* glsl */`\n            float calculateMSDFAlpha(vec4 msdfColor, vec4 shapeColor, float distance) {\n\n                // MSDF\n                float median = msdfColor.r + msdfColor.g + msdfColor.b -\n                                min(msdfColor.r, min(msdfColor.g, msdfColor.b)) -\n                                max(msdfColor.r, max(msdfColor.g, msdfColor.b));\n\n                // SDF\n                median = min(median, msdfColor.a);\n\n                float screenPxDistance = distance * (median - 0.5);\n                float alpha = clamp(screenPxDistance + 0.5, 0.0, 1.0);\n\n                if (median < 0.01) {\n                    alpha = 0.0;\n                } else if (median > 0.99) {\n                    alpha = 1.0;\n                }\n\n                // Gamma correction for coverage-like alpha\n                float luma = dot(shapeColor.rgb, vec3(0.299, 0.587, 0.114));\n                float gamma = mix(1.0, 1.0 / 2.2, luma);\n                float coverage = pow(shapeColor.a * alpha, gamma);\n\n                return coverage;\n            }\n        `,\n    }\n\n};\n"],"names":[],"mappings":";AACO,MAAM,OAAU,GAAA;AAAA,EACnB,IAAM,EAAA,UAAA;AAAA,EACN,QAAU,EAAA;AAAA,IACN,MAAA;AAAA;AAAA,MAAkB,CAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA,QAAA,CAAA;AAAA,KAAA;AAAA,GA4BtB;AAEJ,EAAA;AAGO,MAAM,SAAY,GAAA;AAAA,EACrB,IAAM,EAAA,UAAA;AAAA,EACN,QAAU,EAAA;AAAA,IACN,MAAA;AAAA;AAAA,MAAkB,CAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA,QAAA,CAAA;AAAA,KAAA;AAAA,GA4BtB;AAEJ;;;;"}