Unity la mot game engine đa nen tang đuoc phat trien boi Unity Technologies, ma chu yeu đe phat trien video game cho may tinh, consoles va đien thoai. Lan đau tien no đuoc cong bo chay tren he đieu hanh OS X, tai Apple's Worldwide Developers Conference vao nam 2005, đen nay đa mo rong 27 nen tang.
6 phien ban chinh cua phan mem nay đa đuoc phat hanh. Tai trien lam WWDC nam 2006, Apple đa trao thuong giai Best Use of Mac OS X Graphics cho ung dung nay.


Tong quan Unity ho tro đo hoa 2D va 3D, cac chuc nang đuoc viet chu yeu qua ngon ngu C#. Hai ngon ngu lap trinh khac cung đuoc ho tro: Boo, đa bi loai cung voi viec phat trien Unity 5 va UnityScript bi loai vao thang 8 nam 2017 sau khi phat hanh Unity 2017. UnityScript la mot ngon ngu lap trinh đoc quyen co cu phap tuong tu JavaScript. Phan mem nham muc tieu cac đo hoa APIs sau: Direct3D tren Windows va Xbox One; OpenGL tren Linux, macOS, va Windows; OpenGL ES tren Android va iOS; WebGL tren web; va APIs đoc quyen tren cac may choi video game. Ngoai ra, Unity ho tro APIs cap thap nhu Metal tren iOS va macOS va Vulkan tren Android, Linux, va Windows, cung nhu Direct3D 12 tren Windows va Xbox One. Trong 2D games, Unity cho phep nhap sprites va mot renderer the gioi 2D tien tien. Đoi voi 3D games, Unity cho phep thiet lap cac đap điem ky thuat cua cac ket cau va đo phan giai ma cong cu tro choi ho tro, cung cap cac ho tro cho bump mapping, reflection mapping, parallax mapping, canh khong gian ambient occlusion (SSAO), hieu ung bong đo bang cach su dung shadow maps, render thiet lap toan canh đen hieu ung. Unity cung cung cap cac dich vu cho nha phat trien, bao gom: Unity Ads, Unity Analytics, Unity Certification, Unity Cloud Build, Unity Everyplay, Unity API, Unity Multiplayer, Unity Performance Reporting and Unity Collaborate.
Unity noi bat voi kha nang xay dung tro choi chay tren nhieu nen tang. Cac nen tang đuoc ho tro hien nay la Android, Android TV, Facebook Gameroom, Fire OS, Gear VR, Google Cardboard, Google Daydream, HTC Vive, iOS, Linux, macOS, Microsoft HoloLens, Nintendo 3DS family, Nintendo Switch, Oculus Rift, PlayStation 4, PlayStation Vita, PlayStation VR, Samsung Smart TV, Tizen, tvOS, WebGL, Wii U, Windows, Windows Phone, Windows Store, va Xbox One. Unity truoc đay cung đa ho tro 7 nen tang khac chay tren Unity Web Player. Unity Web Player la mot plugin cua trinh duyet chay tren Windows va OS X, đa bi go bo vi loi ich cua WebGL.
Unity la bo cong cu phat trien phan mem mac đinh (SDK) cho may choi game video game Wii U cua Nintendo, kem theo ban mien phi cua Nintendo voi moi giay phep phat trien Wii U. Unity Technologies goi viec ket hop san xuat SDK voi mot ben thu ba la "industry first".


Cap phep Unity co 4 su lua chon đoi voi nguoi dung. Đay la danh sach cac lua chon hien co:


Lich su Unity game engine khoi đong nam 2005, nham "dan chu hoa" phat trien game bang cach cung cap cho nhieu nha phat trien hon. Nam tiep theo, Unity đuoc vinh danh la a quan trong hang muc Best Use of Mac OS X Graphics tai Apple Design Awards cua Apple Inc. Unity ban đau đuoc phat hanh cho Mac OS X, sau đo bo sung ho tro cho Microsoft Windows va trinh duyet Web.
Unity 2.0 ra mat nam 2007 voi khoang 50 tinh nang moi. Ban phat hanh bao gom mot cong cu đia hinh đuoc toi uu hoa cho moi truong 3D, real-time dynamic shadows, directional lights va spotlights, phat lai video va cac tinh nang khac. Ban phat hanh cung bo sung cac tinh nang nho đo cac nha phat trien co the cong tac de dang hon. No bao gom mot Networking Layer đe cac nha phat trien tao game nhieu nguoi choi dua tren User Datagram Protocol, cung cap Network Address Translation, State Synchronization, va Remote Procedure Calls.
Khi Apple ra mat App Store cua ho nam 2008, Unity nhanh chong bo sung cac ho tro cho iPhone. Trong vai nam, cong cu nay đa khong đuoc thu nghiem tren iPhone va no tro nen noi tieng voi cac nha phat trien tro choi iOS.
Unity 3.0 ra mat thang 9 nam 2010 voi tinh nang mo rong cac tinh nang đo hoa cua engine cho may tinh đe ban va video game consoles. Ngoai ho tro Android, Unity 3 con co tinh nang tich hop cong cu Beast Lightmap cua Illuminate Labs, deferred rendering, mot built-in tree editor, ket xuat phong chu goc, anh xa UV tu đong va bo loc am thanh, cung nhieu thu khac.
Nam 2012, VentureBeat phat bieu rang "rat it cong ty đong gop vao su phat trien tro choi đoc lap nhu Unity Technologies... hon 1,3 trieu nguoi dung đang su dung Unity đe phat trien game tren iOS, Android, may choi game, PC, va tro choi tren web.... Unity se mo ra thoi ky phat trien cong cu phat trien tro choi đa nen tang." Mot khao sat vao thang 5/2012 cua tap chi Game Developer đa chi ra Unity la game engine hang đau danh cho nen tang di đong for mobile platforms. Thang 11 nam 2012, Unity Technologies phat hanh Unity 4.0. Phien ban nay bo sung cac ho tro cho DirectX 11 va Adobe Flash, cac cong cu hoat anh moi co ten Mecanim, va quyen truy cap vao ban xem truoc Linux.
Đoi voi Apple Design Awards tai cuoc trien lam thuong mai WWDC 2006, Apple, Inc. đa goi Unity la Best Use of Mac OS X Graphics (tam dich: Ung dung tot nhat cho đo hoa tren nen tang Mac OS X), mot nam sau khi Unity ra mat tai cung mot trien lam thuong mai. Unity Technologies cho biet đay la lan đau tien mot cong cu phat trien game đuoc trao giai thuong nay. Mot cuoc khao sat thang 5 nam 2012 cua tap chi Game Developer đa khang đinh Unity la cong cu phat trien tro choi hang đau tren di đong. Vao thang 7/2014, Unity đa đat giai "Best Engine" tai lien hoan trao giai thuong cong nghe hang nam cua Anh.
Unity 5 cung nhan đuoc nhung loi khen tuong tu, voi The Verge đa noi rang "Unity giup viec phat trien game tro nen de dang va pho bien... Unity 5 la mot bien tien đang mong đoi trong tuong lai."
Sau khi phat hanh Unity 5, Unity Technologies bi chi trich rang khoi luong lon cac game phat hanh tren Steam la cua cac nha phat trien thieu kinh nghiem. CEO John Riccitiello giai thich trong mot cuoc hop bao rang đay la tac dung phu khi chung ta xa hoi hoa viec phat trien game: "If I had my way, I'd like to see 50 million people using Unity – although I don't think we're going to get there any time soon. I'd like to see high school and college kids using it, people outside the core industry. I think it's sad that most people are consumers of technology and not creators. The world's a better place when people know how to create, not just consume, and that's what we're trying to promote." (tam dich: Neu chung toi co cach, toi muon 50 trieu nguoi su dung Unity - du chung toi biet rat kho đat đuoc đieu đo. Toi muon thay nhung đua tre o truong Trung hoc va Đai hoc su dung no, nhung nguoi ngoai nganh. Toi nghi rang that buon khi hau het moi nguoi la nguoi tieu dung ve cong nghe, chu khong phai nguoi sang tao. The gioi la mot noi tot đep hon khi nguoi ta biet lam the nao đe tao ra, khong chi tieu thu, va đo la nhung gi chung toi đang co gang đe thuc đay.)
Vao thang 12 nam 2016, Unity Technologies thong bao ho se thay đoi he thong so phien ban tren Unity tu đinh theo thu tu sang nam phat hanh đe sap xep cac phien ban voi nhip cap nhat thuong xuyen hon


Marketing Vao ngay 16/12/2013, Unity Technologies Japan tiet lo anh chup man hinh voi mot nu nhan vat linh vat chinh thuc ten Unity-chan (ユニティちゃん, Yuniti-chan), ten that la Kohaku Otori (大鳥 こはく, Otori Kohaku) (long tieng boi Asuka Kakumoto), voi trien lam trong su kien Comic Market 85 tai Tokyo Big Sight tu ngay 29 đen ngay 31 thang 12 cung nam, Unity-chan se đuoc cong bo cung voi long tieng cua co.Du lieu tro choi lien quan đen nhan vat đa đuoc cong bo nam 2014. Cac nhan vat đuoc thiet ke boi Unity Technologies Japan phac hoa "unity" nhu mot nu anh hung. Cong ty cho phep su dung Unity-chan va cac nhan vat lien quan trong mot du an thu cap duoi mot so licenses. Nhu la, Unity-chan xuat hien nhu la mot nhan vat đieu khien đuoc trong game Runbow. Co tro nen rat noi tieng, dan đen co cung xuat hien trong VOCALOID, gom co ca thu vien am thanh rieng trong VOCALOID4 va mot ban đac biet cua VOCALOID đe thich ung voi Unity Engine 5.0 goi la Unity with VOCALOID.


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