<Kayden>
yeah...had two MRs fail to marge because CI was taking too long :/
<Kayden>
just one of those days I suppose :)
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<DemiMarie>
dj-death: is there any way to validate a DMA-BUF?
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<fastrabbit>
Derivative itself is easy concept, first derivative is linear algebra where the formula is derived from relation term for the focal term of interest, and second is substitution with values where the phenomenon of interest gets exact value and the dimension is at the time of interest, that's in mathematics as high maths and part of the integral computation as sub class or subject of math it's not complex to grown up man.
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<dwfreed>
.
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<Kayden>
I think something is wrong with the iris-kbl runners
<Kayden>
been trying to merge a patch series that doesn't affect kbl for 7 hours now
<Kayden>
and on one run they ran for 54 minutes and timed out, and on another they just sat queued for ages
<Kayden>
guess I can write a patch to disable them
<Kayden>
DavidHeidelberg: that's your farm, right? does disabling iris-kbl for now sound like the right thing to do?
<Kayden>
(also, no worries, just wondering what to do)
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<daniels>
Kayden: he’s in the US atm, but indeed please disable them if they’re problematic
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<colinmarc>
why is using VkMemoryDedicatedAllocateInfo necessary/relevant when importing a dmabuf? is that documented somewhere? I just fixed this nvidia bug I've been struggling with for months by chaining that into the memory creation call, and I have no idea why. (Credit to nowrep, who suggested it, but I guess he's not in this channel)
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<colinmarc>
I would like to submit docs upstream somewhere so the next person doesn't get stuck...
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<colinmarc>
JoshuaAshton: Right, I'm mostly wondering why that's important
<colinmarc>
it's not intuitive
<colinmarc>
I wonder if that validation error should cover dmabuf too?
<mlankhorst>
jani: looks sane, planning on later today. :)
<mlankhorst>
touches many places though
<mlankhorst>
Not sure what the policy is in that case
<jani>
mlankhorst: I pretty much said I'll take acks but merge anyway :)
<mlankhorst>
Ok, go for it so I can do a pull request
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<jani>
mlankhorst: done. thanks!
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<mlankhorst>
Ok, I' ll start writing. :)
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<zmike>
jenatali: I assume you do shader rewrites for legacy (4 component) shadow samplers?
<jenatali>
I think so?
<zmike>
I'm gonna move some of my handling into common
<zmike>
so maybe you can delete some code too
<jenatali>
I'm pretty sure our lowering is already in common
<zmike>
🤔
<zmike>
I don't see any tracking for this in shader_info?
<jenatali>
We barely use shader_info, most everything is variables and derefs
<jenatali>
But no, what I'm thinking of is nir_lower_tex_shadow which we only run on shadow textures with txl, txb, or txd
<zmike>
ah
<jenatali>
As of D3D shader model 6.7 we can support txl, and 6.8 finally added txb and txd so we can opt out of that lowering on new D3D drivers
<jenatali>
I'm trying to remember what we do for legacy shadow sampling instrs
<zmike>
does your shadow sampling have 4 components or 1?
<jenatali>
1
<zmike>
that's what I thought
<zmike>
so this will help you in some way
<zmike>
maybe
<jenatali>
Oh hm, the HLSL returns a float but I think the DXIL actually still returns a 4-component result
<zmike>
hm
<jenatali>
Yep, returns a "%dx.types.ResRet.f32" which is a 4-component result
<zmike>
I see
<zmike>
so then maybe this isn't useful after all...
<jenatali>
So we only do the 4 -> 1 thing when removing the shadow aspect of it
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<Lyude>
In a low memory situation (say, you have 16 GB of ram but only like 300MB free) a 77kb cache-coherent dma allocation shouldn't be that likely to fail should it? or am I underestimating the power of memory fragmentation?
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<robmur01>
Lyude: out of 16GB, I'd expect that 300MB-worth to be scattered all over the place, and finding a contiguous 128KB for an order 5 allocation quite possibly tricky indeed
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<robmur01>
especially if it's also constrained by trying to match a less-than-64-bit DMA mask
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