On 25 Aug, this message from Josh Huber echoed through cyberspace:
> Peter Meilstrup <[EMAIL PROTECTED]> writes:
>
>>> Are you sure? Because things seem to play pretty well on my 400 MHz iMac.
>>
>> The 500 flops figure is based on assuming it takes half as long as
>> the simplest implementation of an FFT. There might be better
>> implementations of the algorithm however.
>>
>> Define "pretty well" and what environment you're running in... under
>> linux the best I can get is very noticeably jerky on my 500Mhz
>> Ibook2. Under MacOS the DVD player software uses the ATI card to to
>> the grunt work.
>
> Well, DVDs play great in MacOS on my Lombard...do these have hardware
> DVD decoder support?
Not dedicated hardware, but they do use the Mach64's advanced features.
> The mach64 probably doesn't help too much,
> right?
Depends. I don't know that chip too much, but for sure it has hardware
YUV-to-RGB-conversion-and-scaling, which is used, by the way, with XFree
4's ati driver (maybe only the GATOS one) to implement Xvideo.
> XVideo seems to think the only thing this video hardware is good for
> is Putimage:
>
> [EMAIL PROTECTED]:~]-$> xvinfo
> X-Video Extension version 2.2
> screen #0
> Adaptor #0: "ATI mach64 Video Overlay"
> number of ports: 1
> port base: 42
> operations supported: PutImage
That's expected. Here is my 3dfx Voodoo3 on an i386:
[EMAIL PROTECTED] mlan]$ xvinfo
X-Video Extension version 2.2
screen #0
Adaptor #0: "3dfx Video Overlay"
number of ports: 1
port base: 46
operations supported: PutImage
supported visuals:
depth 24, visualID 0x23
depth 24, visualID 0x24
depth 24, visualID 0x25
depth 24, visualID 0x26
number of attributes: 2
"XV_COLORKEY" (range 0 to 16777215)
client settable attribute
client gettable attribute (current value is 30)
"XV_FILTER_QUALITY" (range 0 to 1)
client settable attribute
client gettable attribute (current value is 1)
maximum XvImage size: 2048 x 2048
Number of image formats: 4
id: 0x32595559 (YUY2)
guid: 59555932-0000-0010-8000-00aa00389b71
bits per pixel: 16
number of planes: 1
type: YUV (packed)
id: 0x59565955 (UYVY)
guid: 55595659-0000-0010-8000-00aa00389b71
bits per pixel: 16
number of planes: 1
type: YUV (packed)
id: 0x32315659 (YV12)
guid: 59563132-0000-0010-8000-00aa00389b71
bits per pixel: 12
number of planes: 3
type: YUV (planar)
id: 0x30323449 (I420)
guid: 49343230-0000-0010-8000-00aa00389b71
bits per pixel: 12
number of planes: 3
type: YUV (planar)
(this is with X 4.1.0)
Cheers
Michel
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Michel Lanners | " Read Philosophy. Study Art.
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