View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0005617 | Spring engine | General | public | 2017-06-22 00:15 | 2017-06-22 17:11 |
| Reporter | DeinFreund | Assigned To | Kloot | ||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | resolved | Resolution | fixed | ||
| Product Version | 103.0 +git | ||||
| Summary | 0005617: Unit icons have very sharp (aliased) edges | ||||
| Description | http://i.imgur.com/0pEmrTz.png http://i.imgur.com/xqj8fze.png | ||||
| Steps To Reproduce | build 1048, win32, 2560x1440 resolution, nvidia proprietary gfx. | ||||
| Tags | No tags attached. | ||||
| Attached Files | |||||
| Checked infolog.txt for Errors | |||||
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My springsettings are: FSAA = 1, FSAALevel = 2, Units and terrain is properly anti-aliased. |
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Full settings in json: http://paste.springfiles.com/view/5ad6bcd4 And an infolog if that helps: http://paste.springfiles.com/view/d06318d1 |
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set FSAALevel = 6 (or larger) to enable A2C sampling for icons. |
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Level 8: 1: https://i.imgur.com/TssAX3m.png 2: https://i.imgur.com/05E2sOG.png Especially on the second image there is still no AA going on. The icon has a sharp edge from black to map color. I would expect the edge to be mixed map color/icon color. But there seems to be some other rescaling algorithm that is causing the images to be more blurred now. What is A2C? |
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tested locally with 1048 (1440x900 res), my icons look the same as yours at level 8. however they also look no different than in 103.0 (or even 98.0) so it's not an engine regression. afaics the rendering for energysolar matches 1:1 with https://github.com/ZeroK-RTS/Zero-K/blob/master/icons/energy_med.png which hasn't been touched in years. |
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In this case consider this a feature request. It's just something that seemed striking after coming back to Spring from other games, adding to the dated look. |
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Oh so maybe this is actually a fault of the uniticons and if they'd use partial transparency at the border pixels it'd look smooth? |
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yes. a binary alpha channel creates this effect, similar to https://springrts.com/phpbb/viewtopic.php?f=13&t=30332 |
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I've replaced the icon by a higher resolution version. This definitely helps by avoiding upscaling, but isn't correctly antialiased either. https://i.imgur.com/0sjGx7S.png On the right I've marked the pixels red that I'd expect to be more transparent. Here's the icon used, as you can see it's perfectly smooth with an antialiased border: https://i.imgur.com/lRa9mJF.png I also wouldn't mind if one could simply render the icon ingame at 1:1 resolution, so the antialiasing is done in the image editor. I'm not sure if that's possible or makes any sense. |
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Are unit icons limited to binary alpha? Then they'd never look smoth. |
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http://zero-k.info/Forum/Post/175663#175663 seems to confirm binary alpha. |
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engine code still uses a binary test (which only passes samples with alpha > 0.5), wait a few hours. the icon texture magnification filter might also need adjustment, seems to be nearest. edit: https://springrts.com/mantis/file_download.php?file_id=3501&type=bug |
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Fix 68344e1f0c9e1a3f1b5ebbc2c67c74f573d40737 committed to develop branch: fix 0005617 (enable non-binary AT for unit icons), repo: spring changeset id: 8431 |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2017-06-22 00:15 | DeinFreund | New Issue | |
| 2017-06-22 00:20 | DeinFreund | Note Added: 0017861 | |
| 2017-06-22 00:24 | DeinFreund | Note Added: 0017862 | |
| 2017-06-22 00:33 | Kloot | Note Added: 0017863 | |
| 2017-06-22 00:39 | DeinFreund | Note Added: 0017864 | |
| 2017-06-22 01:19 | Kloot | Note Added: 0017865 | |
| 2017-06-22 01:21 | Kloot | Note Edited: 0017865 | |
| 2017-06-22 01:25 | Kloot | Note Edited: 0017865 | |
| 2017-06-22 12:03 | DeinFreund | Note Added: 0017866 | |
| 2017-06-22 12:06 | DeinFreund | Note Added: 0017867 | |
| 2017-06-22 12:26 | Kloot | Note Added: 0017868 | |
| 2017-06-22 12:43 | DeinFreund | Note Added: 0017869 | |
| 2017-06-22 12:46 | DeinFreund | Note Added: 0017870 | |
| 2017-06-22 12:49 | DeinFreund | Note Added: 0017871 | |
| 2017-06-22 12:53 | Kloot | Note Added: 0017872 | |
| 2017-06-22 13:09 | Kloot | File Added: screen00000.jpg | |
| 2017-06-22 13:10 | Kloot | Note Edited: 0017872 | |
| 2017-06-22 17:11 | Kloot | Changeset attached | => spring develop 68344e1f |
| 2017-06-22 17:11 | Kloot | Note Added: 0017873 | |
| 2017-06-22 17:11 | Kloot | Assigned To | => Kloot |
| 2017-06-22 17:11 | Kloot | Status | new => resolved |
| 2017-06-22 17:11 | Kloot | Resolution | open => fixed |
