Brief Answers to the Big (Pyra) Questions


levi

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The question was about graphics. As far as I know there's only one SGX core regardless of how many CPU cores there are on the die. The PS Vita's screen only has 540 lines (it's quarter 1080p) while the Pyra has 720 lines though, so it's not directly comparable in my book.
 

God Ginrai

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The question was about graphics. As far as I know there's only one SGX core regardless of how many CPU cores there are on the die. The PS Vita's screen only has 540 lines (it's quarter 1080p) while the Pyra has 720 lines though, so it's not directly comparable in my book.
No, as @elvissteinjr stated, the Vita's SGX has 4 cores of its own that are not CPU cores, but GPU cores, and the Pyra's has 2.

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TrashyMG

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The question was about graphics. As far as I know there's only one SGX core regardless of how many CPU cores there are on the die. The PS Vita's screen only has 540 lines (it's quarter 1080p) while the Pyra has 720 lines though, so it's not directly comparable in my book.
Yeah like the others said, sure there is only one SGX die as it were as it's literally built into the SoC of the OMAP5, but there are two GPU cores on the OMAP5 configuration of the SGX. The vita has the SGX543mp4 variant, we have the SGX544MP2 in the OMAP5

https://en.wikipedia.org/wiki/PowerVR#Series5XT_(SGX)
 

traylorpark

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Cool!
I'm not very programmery, so I am quite beholden to any game engine and its capabilities (likely godot in gles2 mode). But that said, I am super interested in experimenting with the graphics capabilities to see what's the prettiest image I can get on the hardware, while running at a playable frame rate.

How does the memory on the Pyra work? Does the GPU have seperate Vram or is it shared with the main 2gigs? That is one area the Pyra has an obvious advantage over the Vita's 512 ram/128 vram. I'm thinking a possibility of higher res textures, especially things like baked lightmaps and baked ambient occlusion.
 

levi

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IIRC from the Pandora, the GPU doesn't have dedicated or dual-port RAM like PCs do. Instead, when you use the SGX the kernel allocates a chunk of memory for it, and the SGX writes back its rendering into those pages.
 

RZR

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Alright, here's a silly question:
Regarding general graphical capabilities, which console would the Pyra be most similar to?
I've been wondering the same thing, so I did a bit of math I'll leave here for future reference; regarding raw graphical processing power:

The Pyra packs a SGX544MP2 at 533MHz -> 34.112 GFLOPS
->PS Vita: 28.4 GFLOPS
->XBOX: 20 GFLOPS
->PS2: 6.2 GFLOPS
->Wii: 12 GFLOPS
->Pandora: 0.88 GFLOPS
->Pandora 1GHz: 1.6 GFLOPS
->iPad 2: 16 GFLOPS
->iPad 3: 32 GFLOPS
->N3DS: 4.8 GFLOPS
->PSP: 2.6 GFLOPS
->Dreamcast: 2.1 GFLOPS
->GameCube: 9.4 GFLOPS
->Switch undocked: 157.2 GFLOPS
->PS3: 228.8 GFLOPS

So regarding floating point operations per second the Pyra is X times more capable than...:

->1.2 times the PS Vita
->1.7 times the XBOX
->5.5 times the PS2
->2.8 times the Wii
->38.8 times the Pandora
->21.3 times the Pandora 1GHz
->2.1 times the iPad 2

For other SOC floating point performance info: https://gflops.surge.sh/

This reading the leaflet, real performance will depend on thermal management and other considerations. You will need to benchmark a retail Pyra to get real data.
 
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levi

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GFLOPs aren't graphical; they're still maths. They are thousands of millions of floating point maths operations. Sure, they can be used to do 3d maths. They aren't an artefact of the GPU, they come from the CPU core, with it's (these days) intrinsic FPU. It you want to measure the GPU you need something like millions of vertices per second I think.
 

traylorpark

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[Amazing Data]
Let's mark that down as one of the most useful posts ever! GFlops don't tell the whole story of course, but it does help add to it.

As a little aside, I'm playing Mario 3D All Stars, and checking out Mario Galaxy for the first time. What strikes me is that, while the game is not super modern by visual standards, its still attractive and a joy to play. Good art and good controls go a very long way in making a game timeless. I hope someone will take the time to make something like that on the Pyra, because it certainly has enough power to do it.
 

levi

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Super Mario Galaxy is a great game, but it takes more than raw computing power to make something like that. Critically it takes the design nous of Miyamoto-san, and many months of professional coding. I wouldn't expect anything that pretty and enjoyable to play from an open source project to be honest. But luckily there are plenty of fun open source games that perhaps aren't quite as original and pretty to look at.
 
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matzesu

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I was quite scared when (i put my sword in the air and shoot: By the Might of Greyscal, i have the power !!!!), and nothing happens ^^

i opened my USB Stick and my Pyra Voucher TXT wasnt there, i know i have the file on my DADs Windows 8 PC, but if not: I also found the Email when i searched for "Voucher" in Thunderbird, could it be that its the "Thanks" from 2017? Whit the Voucher worth of 400 €, And dos this code ends whit a "." ? 123525. (not the actual Number), as i cant open the whole Email yet
 
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