R420 Might Support Branching after all.

rwolf said:
Unless I am mistaken, Microsoft had listed branching as a P_3_0 Feature, but now its suddenly a P_2_x feature.
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Branching is required under PS 3.0. It is optional under PS 2.x.
 
Well, there is still the notes to Huddy's GDC presentation that seem to indicate conclusively that R420 does not have branching. Tho, as I understand it, they could support every 3.0 feature and if they are still 24-bit max then they aren't 3.0 --but from a developer pov that might not matter a whit in the time-frame where it would make a difference.
 
Wasn't R420 supposedly going to use 2_b profile? Of course, it might support the entire SM 3.0 for all we know.
 
Interesting. So does it mean that a chip that doesn't support Dynamic Flow Control but does support all of the other revised PS 3.0 features is now PS 3.0 compliant?

EDIT: The anwer is clearly no. Nevermind.
 
rwolf said:
I could have sworn that Dynamic Flow control was under 3.0 before...
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It's a cap in ps_2_x and required in ps_3_0. Most 3.0 features are capped in 2.x.
 
Does anyone have a link from Microsoft that shows where PS3.0 requires temp register precision to be s23e8? I've looked all over the MSDN site and found nothing of the sort, the only semi-solid evidence I've seen of this requirement was from the ATI leak and for all we know that may have just been FUD.
 
akira888 said:
Does anyone have a link from Microsoft that shows where PS3.0 requires temp register precision to be s23e8? I've looked all over the MSDN site and found nothing of the sort, the only semi-solid evidence I've seen of this requirement was from the ATI leak and for all we know that may have just been FUD.
Click to expand...

The "save the nanosecond" are bach on Ati.comm, both the slides as PDF (without notes) and the speech as streamed video are availeble.
 
jvd said:
thats assuming its for the r420 .

It could be for any other card
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That's the key. What other card could the PS 2_b profile be for? Well, only about a week to wait.
 
Chalnoth said:
jvd said:
thats assuming its for the r420 .

It could be for any other card
Click to expand...
That's the key. What other card could the PS 2_b profile be for? Well, only about a week to wait.
Click to expand...

a new deltachrome part ? new volari or whatever part ?

Perhaps even yet another update of the r3x0 core that will become the low end card with a few more features .

There are alot of things
 
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