ChanServ changed the topic of #dri-devel to: <ajax> nothing involved with X should ever be unable to find a bar
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<wyatt8740>
No, they aren't the same as each other i think
<wyatt8740>
or llvmpipe, softpipe, and swrast wouldn't all have different behaviours
<HdkR>
One thing to note is that the phrasing mostly comes down to swr != swrast. swr referring to https://www.openswr.org/
<HdkR>
Which is an upstream software rasterizer but your version of mesa very likely doesn't have it compiled in.
<HdkR>
(It also only works on x86)
<jenatali>
Right, swrast is the generic name for using a software rasterizer, and then softpipe, llvmpipe, and swr are the specific software rasterizers
<jenatali>
Which one is used depends on how the binary was compiled and environment variables
<jenatali>
I.e. MESA_LOADER_DRIVER_OVERRIDE=llvmpipe wouldn't work, MESA_LOADER_DRIVER_OVERRIDE=swrast does, GALLIUM_DRIVER=swrast doesn't work, GALLIUM_DRIVER=llvmpipe does
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<wyatt8740>
except MESA_LOADER_DRIVER_OVERRIDE=swrast loads llvmpipe and dies because of some unimplemented thing on ppc32 llvm
<wyatt8740>
so swrast… isn't working
<wyatt8740>
unless i'm still missing the point
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<jenatali>
The point I was making is that swr and softpipe are also swrast
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<jenatali>
karolherbst: airlied: I was gonna see if I could make some progress towards unifying CLOn12's compiler LLVM stuff with clover's, so I tried re-adding Clover to my Windows build env
<jenatali>
And uh... hoo boy, c++20 treating 'module' as a keyword is going to be fun
<karolherbst>
jenatali: crap....
<jenatali>
Yeah...
<jenatali>
I might see if I can get it cleaned up - opinions on "program" instead of "module"?
<jenatali>
Oh nvm there's already a program
<karolherbst>
yeah....
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<karolherbst>
modules are essentially the parts
<karolherbst>
maybe objects?
<jenatali>
Yeah that might work
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<karolherbst>
it's used for "binaries" and "symbols" as far as I can tell
<karolherbst>
pmoreau: any ideas to what we could rename module?
<karolherbst>
but yeah.. I think object might work
<jenatali>
Until C++23 when "object" becomes a keyword :P
<jenatali>
(Kidding)
<karolherbst>
:D
<jenatali>
Ugh, there's already an object.hpp for implementing the API objects
<karolherbst>
ehh
<jenatali>
Cool, got it building
<jenatali>
Lots of 'module' references left though, 'm' variable names, etc
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<karolherbst>
jenatali: oh well... :(
<jenatali>
I'll send an mr in a bit
<airlied>
jenatali: oh a rename bikeshed :-p
<jenatali>
airlied: Not *just* a bikeshed, but yeah a rename needs to happen
<airlied>
clover uses object already, progmod is my paint color
<jenatali>
Right, just a file named object.hpp, no classes/structs named object though
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<airlied>
yeah but that wont be confusing at all :-p
<jenatali>
I guess
<jenatali>
It's easy enough to just rename that file though, that's what I did
<jenatali>
But maybe renaming it to something like api_objects.hpp instead of just objects.hpp would be better?
<jenatali>
I don't really have any skin in the game here though, but I don't really want to redo that rename :P
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<airlied>
jenatali: yeah api_objects.hpp might cover that alright
<airlied>
I suppose we gotta give curro a couple of days to chime in
<airlied>
jenatali: I assume your plan is to move the CLon12 compiler code to common the port clover to it
<airlied>
since clover does compiler very different
<jenatali>
airlied: I think so, based on the MR that jekstrand started a while ago
<jenatali>
Probably gonna be weekend projects though so might take a while
<airlied>
I'd really like to start using the generated opencl prototypes that clang is doing now as well instead of opencl-c.h
<airlied>
and that is probably a good first step towards that
<jenatali>
That'd be great
<jenatali>
That means we wouldn't have to embed opencl-c.h in our DLL
<jenatali>
airlied: Are they more or less complete for targeting CL3.0 compared to the header?
<airlied>
jenatali: not sure, I'm just fixing the header first
<airlied>
then I can fix clover to use the new things and fix regressions
<airlied>
though firstly I'm opening SPIRVWriter.cpp and having to think about entrypoints
<jenatali>
:D
<jenatali>
Guess this means we're going to want to jump on LLVM 14 ASAP
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<airlied>
jenatali: btw I was thinking, is there any reason the entrypoint name needs to be different to the function names, aren't the names decorative? apart from linking which I think should use the Linkage attributes
<jenatali>
Hm...
<jenatali>
I suppose that makes sense, though the converter is supposed to be bi-directional, and I don't know what'd happen if you tried to take SPIR-V that had 2 functions with the same name and convert it to LLVM IR
<jenatali>
Or I guess I don't know what'd happen if you tried to convert SPIR-V with anonymous functions either :)
<airlied>
I think going the other way should just drop the entrypoint decl or merge them
<jenatali>
Yeah the only reason I thought it'd need another name is so that transforming it back to SPIR would produce valid code too
* airlied
isn't as caring about the alternate direction :-P
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<jenatali>
I'm seeing about cleaning up my Clover-on-Windows patches to something that's actually upstreamable
<jenatali>
It's really just the static pipe loader, but also my copy of LLVM wasn't built with RTTI and I don't want to rebuild it... so I'm trying to understand why Mesa enforces that RTTI has to match between LLVM and the rest of the codebase
<jenatali>
From my research, it seems like it should work, as long as you don't try to dynamic_cast any of the LLVM types
<airlied>
jenatali: I think it's one of those wierd things can happen, so why bother
<jenatali>
It's just weird to me that it's only enforced between LLVM and Mesa
<jenatali>
Not any of the other dependencies
<airlied>
jenatali: which other deps? non-llvm ones?
<jenatali>
Yeah
<bnieuwenhuizen>
I think it is the only C++ dep where the C++ interface actually gets used?
<jenatali>
Eh I guess most of them are C
<jenatali>
I guess I can buy that, if you do try to use RTTI on an LLVM type in Mesa when LLVM wasn't built with RTTI, sure that's bad... but forcing RTTI to match as a whole seems like overkill to me
<bnieuwenhuizen>
IIRC it is pretty hard to avoid that, especially once templated types get involved
<jenatali>
It's just exceptions, dynamic_cast, or typeinfo() that'd need RTTI? And the types they'd need it on are pretty scoped at that point
<jenatali>
Seems easy to avoid
<jenatali>
(And on Windows, exceptions aren't part of that list)
<airlied>
at least for me llvm would have recompiled by now :-P
<jenatali>
:P yeah... I guess I can just do that, it's just a pain
<jenatali>
FWIW I still think it's a big hammer that doesn't need to be there :)
<jenatali>
Gonna make an RFC MR to get more opinions
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<karolherbst>
the only solution to RTTI is to not use it ¯\_(ツ)_/¯
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<karolherbst>
if chromium doesn't need RTTI, nobody will :p
<karolherbst>
but I think I am even more astonished by the fact they even disable exceptions
<jenatali>
Windows mostly builds without it, and I know for sure our entire graphics stack doesn't use it
<jenatali>
We still use exceptions, but on Windows that doesn't require RTTI