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| duflu | robert_ancell: Only coding style? :) | 03:40 |
|---|---|---|
| robert_ancell | duflu, that was the easy changes.. | 03:41 |
| duflu | I expect more complaints. So many more that I would not recommend upstreaming right now | 03:42 |
| robert_ancell | duflu, I have a simplified branch that I'm trying to propose. It removes as much as possible to get a first step | 03:42 |
| duflu | robert_ancell: If you mean removing dri2 I would like to do that but it's critical to keep on desktop | 03:43 |
| robert_ancell | duflu, yeah, it's just software support | 03:43 |
| duflu | robert_ancell: Yeah please don't bother. Real desktops need the dri2 backend | 03:43 |
| robert_ancell | duflu, it's worth us having a smaller delta | 03:44 |
| duflu | robert_ancell: Well, if you're working in a separate branch then sure. Don't want to cripple the main one is all | 03:44 |
| robert_ancell | duflu, it's a separate branch | 03:44 |
| duflu | Ugh, same problems with Mesa. We really don't want to upstream egl-platform-mir with the open bugs we know about | 03:45 |
| duflu | Although that's less severe. Not really blocking I guess | 03:46 |
| RAOF | No, we don't want to upstream egl-platform-mir because we're about to completely rewrite it. | 03:48 |
| RAOF | From the interface up. | 03:48 |
| RAOF | Bugs are fine when submitting upstream; knowing that you're about to change the whole platform is not. | 03:50 |
| duflu | RAOF: That's worse. At least now it's stable and mature-ish. If we rewrite it we won't have the same confidence and definitely can't upstream any time soon | 03:51 |
| RAOF | We don't want to upstream mature code. | 03:51 |
| duflu | But maybe soon is not a requirement | 03:51 |
| RAOF | We want to upstream code that we *want* to mature. | 03:51 |
| RAOF | Ideally we should be upstreaming code *well* before its mature. | 03:51 |
| duflu | Fair point. Trunk isn't a place for maturation | 03:51 |
| RAOF | Also, upstreaming is highly likely to involve changes. | 03:52 |
| RAOF | Possibly significant ones. | 03:52 |
| RAOF | “Upstreaming” is almost never “here is this perfectly fine code ready to just drop without changes into your project”. Although, because we're awesome, that totally applies to the Mir EGL platform :) | 03:53 |
| duflu | RAOF: Can you add any more bugs detailing what's missing to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bugs?field.tag=egl-platform-mir | 03:53 |
| RAOF | Huh. Why do you want EGL_SWAP_BEHAVIOUR_PRESERVED? | 03:54 |
| RAOF | That's guaranteed to be slow. | 03:54 |
| duflu | RAOF: I know... but Xmir. Either that or single buffering | 03:54 |
| duflu | Xmir dri/glx copy sub-buffer stuff | 03:55 |
| RAOF | Why do you need it? | 03:55 |
| RAOF | Ah. | 03:55 |
| RAOF | That stupid idea :) | 03:55 |
| duflu | Yep. And the apps already exist | 03:55 |
| RAOF | You can implement it just as efficiently in Xmir, you know. | 03:55 |
| duflu | RAOF: I know and I tried. Failed so far for reasons... not entirely clear | 03:56 |
| duflu | Probably the same reasons why our src/dest FBOs are wrong (the stuttering) | 04:03 |
| duflu | At a guess | 04:03 |
| duflu | Single buffering would actually be most appropriate and have no performance penalty either | 04:04 |
| RAOF | Well, you can do that with MirPresentationChain. | 04:05 |
| RAOF | Indeed, that solves all your problems. | 04:06 |
| RAOF | Mostly. | 04:06 |
| duflu | It's not a massive issue right now as offenders are (confusingly) copying sub-buffers that are the whole window | 04:12 |
| TheKit | is Intel GPU currently not supported by Mir? | 04:12 |
| duflu | TheKit: Intel GPUs are better supported than any other :) | 04:12 |
| duflu | Have been for several years | 04:12 |
| TheKit | ah, ok, thanks | 04:13 |
| duflu | Hmm, actually that might be another Xmir bug | 04:13 |
| RAOF | MirPresentationChain would make it very nearly easy to implement DRI3. | 04:21 |
| RAOF | And then you could ignore all the DRI2 madness. | 04:21 |
| duflu | OK, sounds good. | 04:24 |
| RAOF | (We'd need to add a MirBuffer constructor that took an fd, but that's easy) | 04:25 |
| RAOF | * | 04:25 |
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| alan_g | greyback: just to alert you, the miral-qt stuff needs some tweaks for yakkety (unity-shell-application) and for mir trunk (new DisplayConfiguration fields). | 14:53 |
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