Ingo Chou Posted October 23, 2015 Share Posted October 23, 2015 Hello, Can BABYLONJS support large scale scene of more than 10 million triangular faces? How can I manager the large scale scene and ensure that FPS over 30? Thanks for your reply. Quote Link to comment Share on other sites More sharing options...
davrous Posted October 23, 2015 Share Posted October 23, 2015 Hi, This question is too generic to be answered as-is. Can you please share which kind of scene you're thinking of? There is a lot of things to take into considerations: - the GPU and CPU you're targetting (desktop? mobile?) - some WebGL & JS limitations. JS is mono-threaded, so if you have a lot of draw calls, performance will fall down much sooner than 10 million faces - is it just for rendering or do you need collisions enabled? Collisions will be handled by JS thread and will cost perf also. - 10 million faces can be handled at 30 fps but you need very few draw calls, use a modern browser such as Chrome or MS Edge and uses instances like this demo: http://www.babylonjs.com/index.html?INSTANCEDBONES This is theorically possible but on a good hardware with a very specific scenario. One of our biggest scenes are Mansion and Hill Valley and are using around 1 million faces max. Using specific algorithm (LOD + mesh streaming), one of our partner managed to displayed up to 20 M triangles using babylon.js: http://www.cintoo3d.com/demo/demo/ Bye, David jerome 1 Quote Link to comment Share on other sites More sharing options...
jessepmason Posted October 23, 2015 Share Posted October 23, 2015 @davrous That "mesh streaming" sounds interesting.... would you care to explain more? Quote Link to comment Share on other sites More sharing options...
Ingo Chou Posted October 26, 2015 Author Share Posted October 26, 2015 Hi, David Thanks for your reply. BABYLONJS is，as everyone knows， a very good JS Engine! It is very excellent! So I want to develop a game with BABYLONJS. There are many cities and definitely need collisions. My scene contents have gradually increased. Now there are more than 10 million faces in my scene and it's draw call is about 10 thousand. I test it with DX, but I want to develop it with HTML5 finally. So I want to know: Can BABYLONJS render this large scale scene? Thanks again. Quote Link to comment Share on other sites More sharing options...
Convergence Posted October 26, 2015 Share Posted October 26, 2015 Why don't you just give it a try with Babylon and see the answer for yourself? If you keep the number of meshes and draw calls low, be smart with .isVisible and LOD, don't use too large textures, and you have a decent GFX card, you may get quite far. Quote Link to comment Share on other sites More sharing options...
davrous Posted October 26, 2015 Share Posted October 26, 2015 10 000 draw calls!!! OMG. This is far too much for WebGL and JS to handle. 200 to 300 draw calls is really something maximum you should target to be able to be executed on most PCs. Probably a bit more on big & fast CPU but you've got the idea. Same for your models. Keep in mind that targetting the web today with WebGL 1 is like targetting a mobile. You've got more or less the same restrictions on texture quality, number of faces, number of draw calls. But we'll be happy to support your project! With which tool are you creating your 3D models? 3DS Max, Blender? altreality 1 Quote Link to comment Share on other sites More sharing options...
Ingo Chou Posted October 27, 2015 Author Share Posted October 27, 2015 Hello, David and Convergence. Thank you for your reply and guidance! I'll try my best to restrict number of faces and draw calls. We create 3D models with Blender because it's free. Quote Link to comment Share on other sites More sharing options...
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