search

phetsims / charges-and-fields

"Charges And Fields" is an educational simulation in HTML5, by PhET Interactive Simulations.
GNU General Public License v3.0
8 stars 7 forks source link

Blocky voltage, particularly for negative charge #190

Closed KatieWoe closed 3 years ago

KatieWoe commented 3 years ago

Test device MacBook Air Operating System Mac 10.15.7 Browser Safari 14.0 Problem description For https://github.com/phetsims/QA/issues/559. I noticed that the voltage colorization was blockier on Safari 14 then I expected. The blockiness seemed particularly noticeable with the blue negative voltage. Did not see this in Chrome on the same device.

Visuals Screen Shot 2020-10-13 at 10 29 19 AM

Troubleshooting information:

!!!!! DO NOT EDIT !!!!! Name: ‪Charges and Fields‬ URL: https://phet-dev.colorado.edu/html/charges-and-fields/1.0.48-rc.1/charges-and-fields_all.html Version: 1.0.48-rc.1 2020-10-01 19:33:46 UTC Features missing: touch User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0 Safari/605.1.15 Language: en-us Window: 1313x734 Pixel Ratio: 1/1 WebGL: WebGL 1.0 GLSL: WebGL GLSL ES 1.0 (1.0) Vendor: WebKit (WebKit WebGL) Vertex: attribs: 16 varying: 15 uniform: 1024 Texture: size: 16384 imageUnits: 16 (vertex: 16, combined: 32) Max viewport: 8192x8192 OES_texture_float: true Dependencies JSON: {"assert":{"sha":"7d27130a","branch":"HEAD"},"axon":{"sha":"1fd91832","branch":"HEAD"},"babel":{"sha":"d69aa800","branch":"master"},"brand":{"sha":"e4981a6a","branch":"HEAD"},"charges-and-fields":{"sha":"610fef38","branch":"HEAD"},"chipper":{"sha":"b5faea63","branch":"HEAD"},"dot":{"sha":"3f60cfcc","branch":"HEAD"},"joist":{"sha":"57af1e31","branch":"HEAD"},"kite":{"sha":"3b656b9a","branch":"HEAD"},"phet-core":{"sha":"bebc92b7","branch":"HEAD"},"phetcommon":{"sha":"a4865924","branch":"HEAD"},"phetmarks":{"sha":"3fdfece0","branch":"HEAD"},"scenery":{"sha":"1802fce2","branch":"HEAD"},"scenery-phet":{"sha":"4608a681","branch":"HEAD"},"sherpa":{"sha":"5ddfccd4","branch":"HEAD"},"sun":{"sha":"4b852127","branch":"HEAD"},"tandem":{"sha":"43ebdfb3","branch":"HEAD"}}
KatieWoe commented 3 years ago

Interestingly enough, it looks better in screenshots taken with the phet menu

jonathanolson commented 3 years ago

This is a consequence of the workaround for Safari 14. @ariel-phet, how much time would it be worth to investigate trying to get the higher-quality one working? (Already spent about 2 hours)

ariel-phet commented 3 years ago

@jonathanolson @KatieWoe the presentation of voltage is acceptable, especially since this visualization is for giving a qualitative feel and the "blockiness" observed is not problematic in my opinion.

Closing as wontfix