LuaJIT
a Just-in-Time compiler
for the language Lua
Lua
World of Warcraft
Angry Birds
Civilization 5
Homeworld 2...
http://en.wikipedia.org/wiki/Category:Lua-scripted_video_games
...AND YOU(possibly)
Lua
Lua/C API
=>Extensible & Embeddable
Lua
Lua
LuaJIT
http://luajit.org
Michael (Mike) Pall
2005~ LuaJIT 1.x (stable 1.1.6)
2009~ LuaJIT 2.0-beta releases
Now =>LuaJIT 2.0-beta6
(google for LuaJIT Roadmap 2011)
Just-in-Time Compiler?
Source code => bytecode => machine code
Java Hotspot
C# .Net
Javascript V8/Trace(Jaeger) Monkey
Python Pypy
...
JIT
&
LuaJIT 2.0
interpreter 2x-4x
Lua 5.1
drop-in replacement
Beta
Foreign Function Interface(beta6)
x86/64
LuaJIT in Games?
The Settlers 7 LuaJIT2-beta
Civilization 5 LuaJIT1
bytecode
Mike ...
LuaJIT
Lua table overhead
closure
inner loop
global object
for i = 1, 100000000 do
local t = {'a','b','c'}
for j = 1, 3 do t[j] = .. end
End --p.s. unroll loop
LuaJIT
-jv option
Bytecode Lua 5.1
Lua 5.2
LuaJIT
Qualcomm ARM Port
Foreign Function Interface
local ffi = require("ffi")
ffi.cdef[[
typedef struct { float x,y,z; } SVertex;
int MessageBoxA(void*,char const*,char const*,int);
]]
ffi.C.MessageBoxA(nil, "Hello world!", "Test", 0)
local img = ffi.new("SVertex[?]", 100)
img[0].x = 123
What's to come?
2011
LuaJIT 2.0 2.1
ARM port of LuaJIT 2.0
About 2.1
New Garbage Collector
FFI C-preprocessor (?)
What's to come?
LuaJIT FFI to C++ (!?)
Binding Lua ...
...Full Lua 3D engines ?
...Full Lua Triple-A Titles ?
What's in the next level ?
My 2 Cents:
Lua nature1
Lua nature2
=>
x86/64ARM
Demo Time
Game of Life benchmark
C/C++
=>
GL primitiveVertex Array
VBOPBO
[1]
https://github.com/archilifelin/mysandbox/blob/master/lua/lifegame_ffi_sdl_gl.lua
[2]
https://github.com/archilifelin/mysandbox/tree/master/cpp/lifegame_sdl
Lua
CoronaSDK
Scripting-Layer for Android (SL4A)
Gamekit (based on Ogre)
ShiVa Engine
Love2D
...and more
Love2D
http://love2d.org
OpenGL 2D
Box2D integration
TrueType Fontno unicode yet
Pure Lua
function love.draw() love.graphics.print('Hello World!', 400,
300)end
Q & A
Lua mailing list
http://luajit.org
http://love2d.org
http://en.wikipedia.org
http://shootout.alioth.debian.org
cubeat dot tw at gmail dot com
http://igdshare.blogspot.com
