This thread was closed & he asked that it be opened back up to point out that it really is a difference. I think it might have to do with the new GPU's coming out & he can't talk about it until after they are revealed.
Xbox One: DirectX 11.1+ AMD GPU , PS4: DirectX 11.2+ AMD GPU what's the difference?
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This thread was closed & he asked that it be opened back up to point out that it really is a difference. I think it might have to do with the new GPU's coming out & he can't talk about it until after they are revealed.
Thanks for the explanation MJP. I wasn't aware of the issue you mention in regards to RAGE by iD.
I found some new and interesting information about Tiled Resources and Anisotropic Filtering in the Granite SDK webpage, and the improvements in both technologies.
http://graphinesoftware.com/Announcing-Granite-2.0
What does that mean? Kind of more efficient and cheaper AF? No pop-up anymore when it comes to textures?
The programmers in the Tiled Resources presentation video also said:
It seems to show that there is a hardware implementation on the Xbox One because of the 32mb of eSram:smile2:and also judging by the reviews of the AMD 7790 HD Bonaire.
They also point out what can really work well when it comes to Tiled Resources. -at 29 minutes mark or so in the Tiled Resources presentation video, the middleware company Graphine mentions this about Tiled Resources-
Well, doesn't all of this sound very friendly/compatible with a small pool of eSram? :smile2: I think this is the exact reason why Microsoft have chosen the path they have. I wonder if Microsoft will ask that every Xbox One game shall be programmed using Tiled Resources.
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lol thanks, wondered why I even wrote that until I realised I was in a rush and just said what evolve did.
It's just elaborating on what I was saying earlier: if you implement virtual textures without tiled resources, you need to manually handle AF in the shader and so AF becomes more expensive than it would be without virtual textures. With tiled resources the hardware handles AF, and so it has the same cost as if you didn't use virtual textures.
I'm sure that having hardware PRT will help programmers to better utilize embedded RAM in a lot of cases, but I would be surprised if MS based their entire GPU design around that one feature.
Of course not, that would be silly. Tiles resources will be useful for some things, not so much others. It would make no sense at all to mandate its use with no regard for the specifics of a game and its graphics engine.
Of course you can. And you can also access it with all other (global) memory instructions. The FLAT* instructions are only there to fuse the global memory address space with the local memory space (the 64kB in each CU, not the eSRAM). The GPU shader code doesn't have to know (and it won't know) if a specific address is mapped to DRAM or eSRAM, it's completely transparent at this level.
Brown Intruder
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I dont know if this has already been discussed.. But didn't AMD say that their NEW cards were the only cards that supported DX11.2?? If so, then neither console can support this right??
Sorry if it is a stupid question
Sorry if it is a stupid question
All AMD GCN cards currently support DX11.2 (once windows 8.1 is out there will be a driver update)
Currently on the market there are 2 GCN variants. GCN 1.0 and GCN 1.1.
GCN 1.0 = DX11.2 tier 1.
GCN 1.1 = DX11.2 tier 2.
XB1 supports DX 11.2
PS4 at a hardware level supports DX11.2 functionality (as it's GCN based like XB1), but will not have DX11.2 drivers as it where.
We don't know which (if either) console is GCN 1.1.
B has been broken into tiles and only the tiles needed to draw the current graphics are loaded into memory. These are still stored as a 2D matrix of texture data though, so they look like A in RAM. An alternative representation would be to have 32 separate small textures
It looks like only the lightened (vs darkened) tiles from B are pulled into memory. I'm assuming those are the only resources needed for this texture.
So instead of having to read in the entire image B, only certain tiles are moved to memory. (If I can count it looks like only 25 of 64 are need, I would think the bandwidth required to load those into memory would be reduced by a similar factor),
So instead of having to read in the entire image B, only certain tiles are moved to memory. (If I can count it looks like only 25 of 64 are need, I would think the bandwidth required to load those into memory would be reduced by a similar factor),
Section A represents what the GPU has loaded for its immediate needs, the other portions of the images are not needed, and space savings would be pretty hard to realize if the resident tiles had to be arranged with respect to data that is not there.
That example keeps a linear relationship from A to B. If you trace along from left to right and top to bottom, there is an order to the tiles, just a discontinuity when you hop over unused tiles.
The neat and tidy example may be just for the slide.
That example keeps a linear relationship from A to B. If you trace along from left to right and top to bottom, there is an order to the tiles, just a discontinuity when you hop over unused tiles.
The neat and tidy example may be just for the slide.