jsFLUIDS v.2 - A Fast, Open Source, Fluid Simulator.

Port of Fluids v.2 to javascript using emscripten.

Licensed under ZLib license.

Ported by Johannes Ahlmann, 2013-03-12, http://johannesahlmann.com

• Chrome
  • canvas
    • runs blazingly fast
    • impressively 60% of time is spent in easel/canvas
  • webgl
    • THE BOMB!
    • 34% in canvas particle renderer
    • 12% in three.js "render"
• Firefox
  • canvas
    • runs ok-ish
    • 50% of time spent in easel/canvas
    • 15% in ComputePressureGridEv
    • 10% in emulated Math.imul
  • webgl
    • much better
    • 30% ComputePressureGridEv
    • 20% Math.imul emulation
    • 14% canvas particleRender

• compile with closure (currently gives errors ;(
• check performance on iPhone (probably terrible)
• test performance improvements in fluids_v3
• build adapter to box2d/rigid body physics
• use stats.js for benchmarking

FLUIDS v.2 - SPH Fluid Simulator for CPU and GPU.

Copyright (C) 2008. Rama Hoetzlein, http://www.rchoetzlein.com

A fast CPU and GPU fluid simulator. See website above for details.

• ver 2.0: Oct 2009

  • CUDA ver 2.3 now builds with Visual Studio 2008. The build solutions for VS2005 are no longer needed or included.
  • CUDA ver 2.3 drivers are required for GPU build
  • Freeglut 2.6.0 is now used instead of GLUT
  • Both CPU and GPU projects are in the same Visual Studio solution. If you do not have a CUDA GPU, you can select and build the CPU only project inside Visual Studio. (Right click the Fluid project, select Build)

• Press 'h' for help screen. This shows keyboard cmds available.

• By default, GPU simulation is off. When running the fluid_gpu.exe, press 'g' to start/stop GPU simulation.

• Disabling shadows in common_defs.h will greatly speed up the simulation (You can also press 's' to render without shadows)

• The GPU integrator is not yet complete. Integration always takes place on the CPU, in both CPU and GPU modes. (As a result, this forces a bus transfer to and from the GPU per cycle. Once the integrator is finished, GPU simulation performance should increase significantly.)

• Occassionally, the GPU simulation with crash cuda, causing the screen to blink and particles to move randomly. This is believed to be due to a not-yet-found out of bounds condition.

This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.