大量の要素を高速に表示するためのバーチャルレンダリング入門 / Virtual Rendering Introduction

by 久保田光則

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େྔͷཁૉΛߴ଎ʹදࣔ͢Δ όʔνϟϧϨϯμϦϯάೖ໳ "TQFDUJWF--$ٱอాޫଇ!BOBUPP

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ࣗݾ঺հ ٱอాޫଇ "TQFDUJWF--$୅ද !BOBUPP HJUIVCDPNBOBUPP

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ΞδΣϯμ όʔνϟϧϨϯμϦϯάͱ͸ ࢓૊Έͱ࣮૷

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όʔνϟϧϨϯμϦϯάͱ͸

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όʔνϟϧϨϯμϦϯάͱ͸ ύϑΥʔϚϯεͷͨΊͷςΫχοΫ ΢ΣϒϖʔδʹେྔͷཁૉΛߴ଎ʹ දࣔ͢ΔͨΊͷςΫχοΫ

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େྔͬͯͲΕ͙Β͍

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਺ઍ͔Β਺ඦສͷཁૉ

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࣮ྫ (PPHMF4QSFBETIFFU

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ͳͥඞཁ ී௨ʹ୔ࢁͷཁૉΛදࣔ͢ΔͱͲ͏ͳΔ͔ ྫ͑͹%0.ཁૉΛ਺ेສݸ௥Ճ͢ΔͱͲ͏ ͳΔ͔ ϨϯμϦϯά͕ͱͯ΋ॏͨ͘ͳΔ

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IUUQTEFWFMPQFSTHPPHMFDPNXFCGVOEBNFOUBMTQFSGPSNBODFSFOEFSJOH ϨϯμϦϯάͷྲྀΕ

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શ%0.ཁૉͷ ελΠϧΛܭࢉ

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શͯͷࢹ֮ཁૉͷ ϨΠΞ΢τΛܭࢉ

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શͯͷࢹ֮ཁૉΛ ඳը͢ΔͨΊͷ໋ྩΛ ੜ੒ͯ͠ϥελϥΠζ

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࢓૊Έ্͠ΐ͏͕ͳ͍ %0.ཁૉ͕૿͑Ε͹૿͑Δ΄Ͳ  ϨϯμϦϯά͕ॏͨ͘ͳΔ ΠϯλϥΫγϣϯͷࡍͷ࠶ϨϯμϦ ϯά΋ॏͨ͘ͳΔ

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͜Εʹର͢Δબ୒ࢶ ཁ݅Λมߋ͢Δ ཁ݅Λม͑ͣʹٕज़Ͱղܾ͢Δ

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ཁ݅Λมߋ͢Δ

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ϖʔδૹΓΛ࠾༻͢Δ ੲͳ͕Βͷ΍Γํ

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ϖʔδૹΓΛ࠾༻ͨ͘͠ͳ͍৔߹ 41"ͰϦονͳମݧΛఏڙ͍ͨ͠ $PSEPWBͰϞόΠϧΞϓϦͬΆ͍ͨ͘͠ &MFDUSPOͰσεΫτοϓΞϓϦͬΆ͍ͨ͘͠ (PPHMF4QSFBETIFFUͳͲΞϓϦέʔγϣϯͷ ಛੑ্ϖʔδૹΓͰ͖ͳ͍৔߹΋

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ཁ݅Λม͑ͣʹόʔνϟϧ ϨϯμϦϯάͰղܾ͢Δ

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όʔνϟϧϨϯμϦϯά ࣮࣭తඳը %0.ཁૉ਺Λಈతʹ؅ཧ͢Δ࢓૊Έ

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جຊతͳΞΠσΞ ຊ౰ʹඞཁͳ%0.ཁૉ͚ͩΛϩʔυ ඞཁͳ͘ͳͬͨΒΞϯϩʔυ͢Δ %0.ཁૉ਺Λ཈͑Δ

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ຊ౰ʹඞཁͳ%0.ཁૉͱ͸

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http:// ϒϥ΢βͷWJFXQPSU

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ίϯςϯπશମ

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http:// ϒϥ΢βͷWJFXQPSU ίϯςϯπશମ

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WJFXQPSU͔Β֎Εͨཁૉ͸ඳը ͠ͳͯ͘΋ྑ͍ͷͰ͸

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ίϯςϯπશମ όʔνϟϧϨϯμϦϯά http:// ϒϥ΢βͷWJFXQPSU ίϯςϯπશମ ී௨ʹදࣔ

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ݟ͑ͳ͍෦෼ͷඳըΛαϘΔ

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ΞϧΰϦζϜͷྲྀΕ

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εΫϩʔϧྖҬͷ֬อ %0.ཁૉͷϩʔυɾΞϯϩʔυ εΫϩʔϧΛิ଍ͯ͠ʹ໭Δ

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εΫϩʔϧྖҬͷ֬อ εΫϩʔϧྖҬΛܭࢉ͢Δ ۭͷ%*7Λ࡞ͬͯεΫϩʔϧྖҬΛ ֬อ͢Δ

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http:// ϒϥ΢βͷWJFXQPSU ίϯςϯπશମ

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%0.ཁૉͷϩʔυͱΞϯϩʔυ WJFXQPSU಺ʹԿ͕ϨϯμϦϯά͞ΕΔ ͷ͔Λܭࢉͯ͠%0.ཁૉΛϩʔυ͢Δ WJFXQPSU͔Β֎Εͨ%0.ཁૉΛΞϯ ϩʔυ͢Δ

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http:// ϒϥ΢βͷWJFXQPSU ίϯςϯπશମ ϩʔυ

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εΫϩʔϧΛݕ஌͢Δ εΫϩʔϧ͕͋ΔͱWJFXQPSUͷҐஔ ΋มΘΔͷͰॲཧΛ΍Γ௚͢

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http:// ϒϥ΢βͷWJFXQPSU ίϯςϯπશମ εΫϩʔϧ

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http:// ϒϥ΢βͷWJFXQPSU ίϯςϯπશମ ϩʔυ Ξϯϩʔυ

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ઃܭ࣮૷࣌ͷ೰ΈͲ͜Ζ

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WJFXQPSUʹରԠ͢Δ%0.ཁૉͱҐஔΛ  Ͳ͏΍ͬͯಛఆ͢Δͷ͔ http:// ϒϥ΢βͷWJFXQPSU ίϯςϯπશମ

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֤ཁૉͷେ͖͕͞ݻఆͳΒ࿩͸؆୯

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http:// ϒϥ΢βͷWJFXQPSU ίϯςϯπશମ Ծ૝తͳ ཁૉͷϦετ ^%0.πϦʔʹ ಡΈࠐΉ΂͖ ཁૉ

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֤ཁૉͷେ͖͕͞ෆఆͰ͋Δ৔߹

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http:// ϒϥ΢βͷWJFXQPSU ίϯςϯπશମ Ծ૝తͳ ཁૉͷϦετ ^%0.πϦʔʹ ಡΈࠐΉ΂͖ ཁૉ ͦΕͳΓʹܭࢉ͢Ε͹·͋େৎ෉

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֤ཁૉͷେ͖͕͞ෆఆ͔ͭ େ͖͕͞ࣄલʹΘ͔Βͳ͍৔߹

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http:// ϒϥ΢βͷWJFXQPSU ίϯςϯπશମ Ծ૝తͳ ཁૉͷϦετ %0.πϦʔʹ ಡΈࠐΉ΂͖ ཁૉ͸ͲΕ ͲͷҐஔʹ %0.ཁૉΛ දࣔ͢Ε͹ྑ͍

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ཁૉͷେ͖͕͞Θ͔Βͳ͍৔߹ ֤ཁૉͷେ͖͞ΛԾͰ͓࣋ͬͯ͘ εΫϩʔϧൣғͷେ͖͞ΛԾͰܭࢉ͢Δ ϨϯμϦϯά͔ͯ͠Βཁૉͷେ͖͞Λ HFU#PVOEJOH$MJFOU3FDU ͳͲΛ࢖ͬͯอଘ͓ͯ͘͠ 'PSDFE4ZODISPOPVT-BZPVUΛى͕ͪ͜͠ ࣮ࡍͷཁૉͷେ͖͕͞Θ͔ͬͨΒཁૉͷҐஔ΍εΫ ϩʔϧൣғ΍εΫϩʔϧҐஔΛߋ৽͢Δ

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݁ߏ໘౗

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՝୊

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՝୊ εΫϩʔϧͰ'14ग़͢ͷ͕೉͍͠ εΫϩʔϧΠϕϯτΛิ଍ͯ͠ɺͱ ͍͏ܗʹͳΔͷͰͦͷ෼εΫϩʔϧ ͕ॏͨ͘ͳΔ

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՝୊ղܾ΁ͷΞϓϩʔν 1BTTJWF&WFOU-JTUFOFS *OUFSTFDUJPO0CTFSWFS

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ิ଍

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ิ଍طଘͷ࣮૷ 0OTFO6*ͷPOTMB[ZMPBE 3FBDUKT༻ͷSFBDUWJSUVBMJ[FE "OHVMBS༻ͷBOHVMBSWJSUVBMMJTU ౳ͳͲ

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ิ଍ແݶεΫϩʔϧͱͷҧ͍ ແݶεΫϩʔϧͰ͸ɺ%0.ཁૉͷ ਺͸ͲΜͲΜ૿͍͑ͯ͘ɻݮΒͳ͍ όʔνϟϧϨϯμϦϯάͱซ༻͞Ε Δ͜ͱ΋͋Γ

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·ͱΊ %0.ཁૉ਺͕૿͑Δͱॏͨ͘ͳΔ ಈతʹ%0.ཁૉͷ਺Λௐ੔͢Δͷ ͕όʔνϟϧϨϯμϦϯά ࣮ࡍʹදࣔ͞ΕΔ%0.ཁૉʹண໨

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͝ਗ਼ௌ͋Γ͕ͱ͏ ͍͟͝·ͨ͠ɻ