Re: D3DPRESENTFLAG_VIDEO
From: joreg (no_at_spam.com)
Date: 02/04/05
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Date: Fri, 04 Feb 2005 03:15:09 +0100
Phil Taylor wrote:
> driver and hw dependent.
ok. thats what i already understood from the line in the docs saying
that its a hint to the driver. still i don't have a glue what a driver
would choose to do in case it gets that hint. and if i would therefore
like my application to hint the driver this flag or not.
> it doesnt give you any opportunities to do anything special in the
> app, so why are you worrying about it?
perdon? i am worrying because i want to understand what the code that i
am writing does. when my code relies on someone elses code i try to
understand that code too. in this particular case i saw no other
opportunity to find out about the meaning of this flag than asking here.
if you don't know an answer, maybe someone else still does.
thanks anyway for your comments.
joreg.
>
> all this does is allow the driver/hw to understand that the current
> rendering may contain video. if that means the driver/hw needs to do
> something special, it has a hint and doesnt need to guess. what it does,
> certainly varies from each generation and likely within a generation
> depending on level of chip ( x300,x600,x800 for ati, 6300,6600,6800 for
> nvidia ).
>
> it doesnt give you any opportunities to do anything special in the app, so
> why are you worrying about it?
>
> "joreg" <no@spam.com> wrote in message
> news:unElb%23YCFHA.960@TK2MSFTNGP09.phx.gbl...
>
>>yeah. thanks i saw that.
>>but do you have any idea what a driver does with that hint?
>>
>>Phil Taylor wrote:
>>
>>>in the docs, under D3DPRESENTFLAG, I see
>>>
>>> D3DPRESENTFLAG_VIDEO 0x00000010 This is a hint to the driver that
>>>the back buffers will contain video data.
>>>
>>>
>>>do you not see that?
>>>
>>>"joreg" <no@spam.com> wrote in message
>>>news:%23ii8AHXCFHA.3936@TK2MSFTNGP09.phx.gbl...
>>>
>>>
>>>>halo.
>>>>
>>>>in the Flag item of the D3DPRESENT_PARAMETERS i can set a flag named:
>>>>D3DPRESENTFLAG_VIDEO
>>>>
>>>>but i cannot find any further documentation on this. any ideas?
>>>>
>>>>thnaks.
>>>>joreg.
>>>
>>>
>
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