* nvidia: how to use overlay
@ 2005-01-20 12:18 feedback
2005-01-20 22:00 ` Antonino A. Daplas
0 siblings, 1 reply; 2+ messages in thread
From: feedback @ 2005-01-20 12:18 UTC (permalink / raw)
To: linux-fbdev-devel
gongpu (gongp03@hotmail.com) has submitted this feedback
for nvidia
In my project which I\'m working on, I want to display two layer. One is for some video information. The other is for some symbols. I know how to use frame buffer to write directly to the video ram. But how to implement these two layers?
SDL sdk gives some overlay functions, but I think it was implemented in software. How to use hardware overlay?
Of course, I\'m sure that my video card surpport this kind of overlay.
I\'ll be very appreciated if you can tell me how to do it or where I can find relative information. Thanks for reading. Waiting for your answer.
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: nvidia: how to use overlay
2005-01-20 12:18 nvidia: how to use overlay feedback
@ 2005-01-20 22:00 ` Antonino A. Daplas
0 siblings, 0 replies; 2+ messages in thread
From: Antonino A. Daplas @ 2005-01-20 22:00 UTC (permalink / raw)
To: linux-fbdev-devel, feedback
On Thursday 20 January 2005 20:18, feedback@linux-fbdev.sourceforge.net wrote:
> gongpu (gongp03@hotmail.com) has submitted this feedback
> for nvidia
>
> In my project which I\'m working on, I want to display two layer. One is
> for some video information. The other is for some symbols. I know how to
> use frame buffer to write directly to the video ram. But how to implement
> these two layers? SDL sdk gives some overlay functions, but I think it was
> implemented in software. How to use hardware overlay? Of course, I\'m sure
> that my video card surpport this kind of overlay. I\'ll be very appreciated
> if you can tell me how to do it or where I can find relative information.
> Thanks for reading. Waiting for your answer.
Try DirectFB (www.directfb.org). They have an nvidia driver that supports
multiple layers (usually primary + overlay). You can use SDL on DirectFB by
the way.
Note: I don't know the status of the DirectFB nvidia driver, but it seems
there is a flurry of development recently.
Tony
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2005-01-20 22:00 ` Antonino A. Daplas
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