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retrogamehandheld / pcsx4all_gles

An attempt to get PCXS4ALL for MIPS to offload 3D processing to the GPU
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etnaviv/mesa/buildroot versions #1

Open npaladin2000 opened 4 years ago

npaladin2000 commented 4 years ago

Little conversation i had with glebm in the channel, shed some light n what we're facing:

glebm Today at 1:02 PM etnaviv has been merged into mesa mainline we're just on a really old buildroot

npaladin2000 Today at 1:03 PM So our mesa doesn't have it?

glebm Today at 1:04 PM our mesa is from 2014 but we also have an ancient etna_viv if we upgrade mesa we won't need etna_viv -- it's part of mesa now and maintained in mesa etnaviv driver is also in mainline linux kernel now but our kernel is too old

npaladin2000 Today at 1:05 PM That means updating buildroot. That's a major thing..and it means using the new PCSX4ALL would require a firmware update

glebm Today at 1:05 PM yes, i think step 1 would need to be to rebase buildroot and kernel customization on top of the latest versions our buildroot is of 2014 vintage

npaladin2000 Today at 1:07 PM Well, that's kind of a big hang-up. We'll have to wait on a new kernel/firmware before we can get started

glebm Today at 1:07 PM You could probably get something work with the current drivers and kernel but IMO this effort would be better spent updating the kernel and buildroot mainline driver development is pretty active https://lists.freedesktop.org/archives/dri-devel/2019-August/231410.html

npaladin2000 Today at 1:08 PM We'll have to coordinate somehow

glebm Today at 1:08 PM probably lots of performance benefits for switching

jbd1986 commented 4 years ago

Podulator has already built a mucher newer buildroot from opendingux. We haven't messed with it further yet though.

Could be something I look at soon, now that initial images are building and I have a better idea of the overall system.

npaladin2000 commented 4 years ago

Well, if we've already got the newer buildroot that's a big hurdle. That gives us current mesa, with built in etnaviv support. We don't have to figure out how to incorporate that.

jbd1986 commented 4 years ago

https://github.com/podulator/buildroot/commits/opendingux

jbd1986 commented 4 years ago

we're on an older kernel though... don't know if that's gonna be a showstopper. I think @tonyjih was contemplating upgrading the kernel. This would be a good reason to do so.

npaladin2000 commented 4 years ago

I agree, if we can move up to a kernel with built in etnaviv support it will take us where we want to go.

tonyjih commented 4 years ago

I'm preparing to move jz-4.9 soon