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phetsims / bending-light

"Bending Light" is an educational simulation in HTML5, by PhET Interactive Simulations.
http://phet.colorado.edu/en/simulation/bending-light
GNU General Public License v3.0
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Fuzziness in iFrame #332

Closed elisemorgan closed 8 years ago

elisemorgan commented 8 years ago

Test device: iPad 2, Witten

Operating System: iOS 9.2 (13C75)

Browser: Safari

Problem description: there is a noticeable amount of fuzziness when the sim is loaded in the iFrame. Most prominent in the intro screen.

Steps to reproduce: Opem sim in iFrame

Severity: minor

Screenshots: image

Troubleshooting information (do not edit): Name: ‪Bending Light‬ URL: http://www.colorado.edu/physics/phet/dev/html/bending-light/1.0.0-rc.1/bending-light_en.html Version: 1.0.0-rc.1 2015-12-18 17:54:28 UTC Features missing: fullscreen User Agent: Mozilla/5.0 (iPad; CPU OS 9_2 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Version/9.0 Mobile/13C75 Safari/601.1 Language: en-us Window: 1024x671 Pixel Ratio: 1/1 WebGL: WebGL 1.0 (OpenGL ES 2.0 IMGSGX543-124.1) GLSL: WebGL GLSL ES 1.0 (OpenGL ES GLSL ES 1.00) Vendor: WebKit (WebKit WebGL) Vertex: attribs: 16 varying: 8 uniform: 128 Texture: size: 4096 imageUnits: 8 (vertex: 8, combined: 8) Max viewport: 4096x4096 OES_texture_float: true Dependencies JSON: {"assert":{"sha":"d4909677","branch":"HEAD"},"axon":{"sha":"60075be9","branch":"HEAD"},"babel":{"sha":"dd59a2a4","branch":"master"},"bending-light":{"sha":"79a6385f","branch":"HEAD"},"brand":{"sha":"c9282935","branch":"HEAD"},"chipper":{"sha":"d18a2538","branch":"HEAD"},"dot":{"sha":"24f07fa0","branch":"HEAD"},"joist":{"sha":"f73eef15","branch":"HEAD"},"kite":{"sha":"a4907ccc","branch":"HEAD"},"phet-core":{"sha":"73a034c6","branch":"HEAD"},"phetcommon":{"sha":"d712ace0","branch":"HEAD"},"scenery":{"sha":"98ea2eeb","branch":"HEAD"},"scenery-phet":{"sha":"a62aafce","branch":"HEAD"},"sherpa":{"sha":"be8c4fc9","branch":"HEAD"},"sun":{"sha":"1b39dfc5","branch":"HEAD"},"tandem":{"sha":"87f3d2ab","branch":"HEAD"}}

samreid commented 8 years ago

The same problem does not appear on OS X Safari:

image

samreid commented 8 years ago

The problem does not occur on retina ipad (testing iPad3) iOS 9.2:

ipad3

We previously investigated the fuzzy iPad2 laser in this issue https://github.com/phetsims/bending-light/issues/253 but decided the issue wasn't too problematic. The WebGL jaggedness for the web view seems tricky to solve and I have not investigated it.

Since this report indicated severity "minor" and the fixes seem like trouble, I'll close this issue. We can re-open if we are getting lots of reports from clients having this issue on iPad2.