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| [05:59:59] | <yoav> | zcorpan: Thoughts on ? |
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| [13:42:18] | <yoav> | landed |
| [13:43:03] | <yoav> | so images won't upscale for up to (and including) 1x DPR |
| [13:43:19] | <yoav> | we still need some research tho |
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| [13:54:28] | <newtron> | yoav: a guy at my work offered to help get some research started |
| [13:54:44] | <newtron> | he'll work off the proposal i posted yesterday, unless anybody has feedback |
| [14:01:20] | <yoav> | newtron: Awesome! :) |
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| [14:45:24] | <newtron> | we can get a user's DPR with JS, right? |
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| [15:12:48] | <yoav> | newtron: window.devicePixelRatio IIRC |
| [15:13:06] | <newtron> | yoav: thx |
| [15:50:35] | <yoav> | newtron: I would add ssim scores to each phase in your survey |
| [15:51:13] | <yoav> | (as part of building the survey, rather than asking people) |
| [15:51:52] | <yoav> | (although, we could render them on canvas and calculate ssim on the user's machine</crazy>) |
| [15:53:50] | <newtron> | yoav: ya, i dssim as something to do a subgroup analysis on |
| [15:54:17] | <newtron> | i think the test cases can stay the same, but we can log the ssim/dssim for each pair and see if there's an effect |
| [15:54:59] | <newtron> | once i have the test images generated i'll make sure there's a decent enough spread of dssim scores or if i need to generate more test cases |
| [15:55:21] | <newtron> | (i'm doing this part because i'm a sucker; nik is going to build the interface for the survey and data collection) |
| [15:56:04] | <yoav> | very cool |
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| [16:41:02] | <zcorpan> | gregwhitworth shared spartan's test results for - 6 fails, of which 2 are expected (since they only support x) |
| [16:42:05] | <zcorpan> | Fail "data:,a 1w 1h" |
| [16:42:05] | <zcorpan> | Fail "data:,a 1h 1w" |
| [16:42:05] | <zcorpan> | Fail "data:,a 0x" |
| [16:42:07] | <zcorpan> | Fail "data:,a -0x" |
| [16:42:09] | <zcorpan> | Fail "data:,a 1.x" |
| [16:42:11] | <zcorpan> | Fail "data:,a +1x" |
| [16:43:05] | <zcorpan> | yoav: r? (spartan correctly fails this btw) |
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| [16:48:54] | <yoav> | looking |
| [16:49:07] | <yoav> | zcorpan: Did you see my question on ? |
| [16:49:15] | <eeeps> | newtron: would it be possible to vary not only on software (browsers) but also on hardware (devices)? |
| [16:49:55] | <zcorpan> | yoav: nopew |
| [16:49:55] | <newtron> | eeeps: you mean the devices on which the test images are generated, or the devices users are using to view the test images? |
| [16:50:04] | <eeeps> | for viewing |
| [16:50:23] | * eeeps might be totally not understanding the test architecture |
| [16:50:27] | <zcorpan> | yoav: ... HTML4? |
| [16:51:17] | <newtron> | eeeps: ya, i think that makes sense |
| [16:51:21] | <newtron> | especially in terms of DPR |
| [16:51:35] | <newtron> | that's why i asked above about collecting DPR with JS |
| [16:51:53] | <newtron> | do you think it makes sense to ask the users what kind of device they're on? |
| [16:52:01] | <yoav> | zcorpan: Can you comment on the bug with the HTML5 link that makes this irrelevant so I can delete the irrelevant test? |
| [16:52:06] | <zcorpan> | yoav: yep |
| [16:52:28] | <eeeps> | newtron yep! then you can kind of work out the angle each pixel subtends on their retina based on dpr and a guestamate of the viewing distance for that device |
| [16:52:39] | <eeeps> | ~guesstimate |
| [16:52:44] | <newtron> | eeeps: good idea |
| [16:53:14] | <newtron> | so just like phone/tablet/laptop/desktop/other? |
| [16:53:30] | <newtron> | (+tv, +other handheld?) |
| [16:54:07] | <eeeps> | yeah maybe. more detail = better, but seems like you have to strike a balance between getting more data and making the test cumbersome, and I have no idea where that lies |
| [16:55:05] | <newtron> | ya that's what i'd be worried about. i'd rather they spend time rating images instead of getting bored by the prelim questions |
| [16:55:09] | <zcorpan> | yoav: done |
| [16:55:31] | <newtron> | a broad device question + user agent string should be able to give us a pretty good idea in most cases |
| [16:55:55] | <eeeps> | newtron: *thumbs up* |
| [16:56:17] | <newtron> | + maybe screen/viewport dimensions from JS too |
| [16:56:48] | <eeeps> | yep collect all of the “free” data that you can… |
| [16:58:27] | <newtron> | anybody have a windows machine + spartan and want to do some screenshots for me? |
| [16:58:50] | <newtron> | (there would be a lot…) |
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| [19:42:14] | <yoav> | and async image loading has landed: |
| [19:46:11] | <Wilto> | Niiiice. |
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| [20:21:06] | <newtron> | yoav: like images are just loaded async by default with that change? |
| [20:21:54] | <yoav> | async in the sense that the load is not triggered synchronously, but using a microtask |
| [20:22:02] | <yoav> | just like Blink does it |
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| [21:31:26] | <newtron> | cool |
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