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General => General discussions => Topic started by: purestrain on June 30, 2008, 12:56:19 pm

Title: SFML / Performance in VirtualBox
Post by: purestrain on June 30, 2008, 12:56:19 pm

Hello,

I've recently found SFML. Currently i'm using SDL (Bindings for D) and i'm planning to switch to SFML (again D Binding), but when will the Binding be ready? I didn't found something to download.

Second: How is the performance in Virtual Box? I mean, since SFML uses OpenGL, i think it will be much slower. Am i right?

Greetings

Title: SFML / Performance in VirtualBox
Post by: Laurent on June 30, 2008, 02:35:02 pm

Quote

I've recently found SFML. Currently i'm using SDL (Bindings for D) and i'm planning to switch to SFML (again D Binding), but when will the Binding be ready? I didn't found something to download.

In a couple of days. If you want you can already get it from SVN.

Quote

Second: How is the performance in Virtual Box? I mean, since SFML uses OpenGL, i think it will be much slower. Am i right?

Sorry, I don't know much about Virtual Box.

Title: SFML / Performance in VirtualBox
Post by: tgm on June 30, 2008, 08:40:06 pm

yeap.. since VirtualBox doesn't use the GPU SFML will be way slower... :lol:
moste likly SDL will be faster...

Title: SFML / Performance in VirtualBox
Post by: Wizzard on July 01, 2008, 06:33:00 am

How does VirtualBox change the performance of SFML?

Without using VirtualBox, SFML is in fact faster than SDL because SFML takes advantage of the GPU.

Title: SFML / Performance in VirtualBox
Post by: Xylankant on July 01, 2008, 07:52:00 pm

Quote from: "Wizzard"

How does VirtualBox change the performance of SFML?

Without using VirtualBox, SFML is in fact faster than SDL because SFML takes advantage of the GPU.

You can answer that yourself ;)

SFML takes advantage of the GPU, however, VirtualBox won't let SFML use these advantages.

Title: SFML / Performance in VirtualBox
Post by: Wizzard on July 01, 2008, 08:27:51 pm

So what advantage does this give SDL over SFML?

If SFML can work at all while it can't use the GPU, it'd be rendering in a software mode, which would just lower it to SDL's level of performance (assuming that the OpenGL implementation is as optimized as SDL).

It probably is faster with SDL, I trust you guys, but I'm just trying to understand it better.

Title: SFML / Performance in VirtualBox
Post by: Xylankant on July 01, 2008, 08:36:01 pm

Well, problem is how extensive SFML makes use of the GPU to increase performance.
I don't know about that issue, but if SFML's increase in performance over SDL is heavily GPU-related and it is not that optimized for CPU, maybe SDL has a better rate on CPU-usage only.

However, I'm not really on the inside of SFML, so I can only guess which API is slightly more performant, using a VirtualBox.

Title: SFML / Performance in VirtualBox
Post by: Wizzard on July 01, 2008, 08:55:25 pm

Alright, thanks for the info.

Title: SFML / Performance in VirtualBox
Post by: kullerhamPster on May 05, 2009, 09:08:06 pm

Sorry for pushing that one up again, but I thought it would be worth discussing the VirtualBox-question again, as VirtualBox now supports hardware-accelerated OpenGL for guest operating systems.

However, I tried it out and found that my simple SFML-application runs extremly slow. Has anyone else tried SFML in VirtualBox with OpenGL-support enabled?

Title: SFML / Performance in VirtualBox
Post by: Tank on May 05, 2009, 11:12:36 pm

VirtualBox supports OpenGL? Uh, have to check that out. :)

Title: SFML / Performance in VirtualBox
Post by: kullerhamPster on May 09, 2009, 03:54:23 pm

Quote from: "Tank"

VirtualBox supports OpenGL? Uh, have to check that out. :)

Yeah, since version 2.0 or so, I guess. It was only for Windows-guests in the first release (if I remember correctly), but now (since 2.2?!) it should also work with Linux guests.

I'm not sure if it's still beta.