I want to use fb device for my 3D game. Can it do what I need?

I want to use fb device for my 3D game. Can it do what I need?

[Andrew Walrond]

Hello list!

I have developed a software library for rendering 3D scenes.
It would be very cool if I could use the fb device so that X needn't be 
running, freeing considerable resources for the application
Note that it is a _software_ renderer, I don't need access to 3D hardware 
acceleration, just a means of copying/bliting frames to the screen as fast as 
possible, and a double buffering facility

So what I need is an api allowing me to

- Set the screen resolution/colour depth. (16bit colour depth or better is 
required)

- Allocate front and back buffers

- Copy scene to back buffer

- Swap buffers synced with vertical refresh

Does fbdev have the facilities I need?

Andrew Walrond



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Re: I want to use fb device for my 3D game. Can it do what I need?

[Otto Solares]

On Fri, Jan 09, 2004 at 10:00:10PM +0000, Andrew Walrond wrote:
> Hello list!
> 
> I have developed a software library for rendering 3D scenes.

Hmm.. cool! how you construct the 3D scenes?

> It would be very cool if I could use the fb device so that X needn't be 
> running, freeing considerable resources for the application
> Note that it is a _software_ renderer, I don't need access to 3D hardware 
> acceleration, just a means of copying/bliting frames to the screen as fast as 
> possible, and a double buffering facility
> 
> So what I need is an api allowing me to
> 
> - Set the screen resolution/colour depth. (16bit colour depth or better is 
> required)

Already part of fbdev.

> - Allocate front and back buffers
> 
> - Copy scene to back buffer
>
> - Swap buffers synced with vertical refresh
>
> Does fbdev have the facilities I need?

You would probably want to look at SDL's fbdev backend.

-solca



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Re: I want to use fb device for my 3D game. Can it do what I need?

[Andrew Walrond]

On Friday 09 Jan 2004 10:34 pm, Otto Solares wrote:
>
> Hmm.. cool! how you construct the 3D scenes?
>
Big question in ... 8 words!
Quick answer - custom 3D renderer :)

>
> You would probably want to look at SDL's fbdev backend.
>

Good hint. I've just checked out SDL and it looks useful.

Andrew



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