Comments on: For Developers: Free Tigre 3D Engine

By: Nick

Nick — Sat, 28 Nov 2009 14:09:29 +0000

Check out the latest demos of the Galatea 3D engine for Windows Mobile if you want to see some amazing stuff… here's the link for the latest release: http://cafe.naver.com/bjphone.cafe?iframe_url=/Ar…

Runs amazing on my Touch Pro 2!

By: Lame

Lame — Wed, 18 Nov 2009 18:56:12 +0000

Sorry I couldn´t test it on my iolite yet, but yes Omnia2 has unfortunately only OpenGL2.0 driver afaik.
Well i wish u the best and hope your solution will suceed

By: Phippu

Phippu — Wed, 18 Nov 2009 17:02:12 +0000

I think Omnia 2 has OpenGl, probably even 2.0. Does the demo run fluid on the Iolite, i don't think this phone has a proper driver?!?

By: Lame

Lame — Wed, 18 Nov 2009 16:07:18 +0000

Ok thanks for your explanation.
Currently i have an HTC iolite with MSM 7225 and thinking to get a Samsung i8000 Omnia2, is this also supported?

By: Phippu

Phippu — Wed, 18 Nov 2009 15:31:48 +0000

Yes, Tigre will work out of the box with any GPU that supports OpenGl. For example if you buy a Touch HD as i have one, you can download the Tigre demo and it will work without any other software installed. This is because HTC has deployed the required driver already. This is the same on the desktop: it doesn't matter which gpu you have to play a game (mostly). So imagine that not every GPU is the same, but every GPU that has OpenGL ES implemented will offer a driver (LibGLES_CM.dll). This driver accepts common inputs that are specified by the opengl api. Tigre then can use those api calls to execute code on the GPU. Please note that not every driver does execute the code the same way. For example if you render the demo with vincent 3d it does not looks as good as a native driver. So what phone you have, does the demo not work on your device?

By: Lame

Lame — Wed, 18 Nov 2009 14:21:04 +0000

Im not a developer, just bothering.
with bundle i meant if tigre will support at least popular GPUs out of the box, but afaik GPUs are IPs and there is no framework for opengldrivers yet, which tigre is supposed to be, as far i understand it correctly, but don’t u have to purchase the OGL driver for your software directly from the Gpu vendor?

By: Phippu

Phippu — Wed, 18 Nov 2009 13:19:29 +0000

Im not sure what you mean. The only thing Tigre needs is a dll called "LibGLES_cm". This is the opengl driver, provided by htc or any other vendor. This file is diffrent from device to device. If your phone does not have this file, it seems that the manufacturer didn't depoly a valid driver, so you have to use a software renderer like vincent 3d (more on my site). And no, its not directX mobile, its totaly different (the engine would basicaly support this api). So opengl and directx (mobile and desktop) are apis to access the graphics hardware directly. So if you want to render a geometrc object like an teapot you have to to a lot of api calls and itse very complex. With Tigre or and other rendering engine you can do this very easily:

Tigre.Renderer r = new Tigre.Renderer;
Mesh m = Renderer.SceneManager.Add(Wavefront.load("teapot.obj");

Tigre then initializes the display, loads the file, does texturing, lighting etc.

With open gl you would need to write more than 100 lines! If you use Tigre you do not need to know much about opengl, so it's really easy to develop 3d games with tigre…

By: Lame

Lame — Wed, 18 Nov 2009 12:15:31 +0000

@phippu
So Does tigre come with bundle of opengl framework drivers included? If not wouldn’t it be just another direktXmobile?

By: Lame

Lame — Wed, 18 Nov 2009 12:12:46 +0000

@phillipu

By: Phippu

Phippu — Wed, 18 Nov 2009 08:26:04 +0000

Well, my idea was to make it easyer for other developers to use opengl with the popular .net runtime. If you think its too slow you just did'nt test my demo, its quit fast for a mobile device and there's a lot i can do for more performance(its just a early demo!). In the case of tigre "able" means that it runns hardware accelerated by default if the device does support it, and trust me use Tigre ist much easyer than call opengl directly. 2d UI's will be possible too, even combined with 3d scenes.