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phetsims / blackbody-spectrum

"Blackbody Spectrum" is an educational simulation in HTML5, by PhET Interactive Simulations.
GNU General Public License v3.0
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Slight lag of temperature controls in certain situations. #79

Closed KatieWoe closed 5 years ago

KatieWoe commented 5 years ago

Test device: Dell and Jordan Operating System: Win 10 and Mac 10.14 Browser: firefox, chrome, and safari Problem description: For https://github.com/phetsims/QA/issues/285 Easier to see in slightly slower devices such as the mac. When both axis of the graph are zoomed far out and the temperature is near the bottom of the scale, the temperature control is noticeably more laggy. Steps to reproduce:

  1. Preferably use a slightly slower platform that isn't consistently laggy (so firefox but not edge)
  2. Zoom y-axis to 700 and x-axis to 48
  3. Drag temperature to lower end of scale and drag it around.

Screenshots: May be hard to see as screen recording sometimes causes lag itself lagatlowtemp

Troubleshooting information (do not edit):

Name: ‪Blackbody Spectrum‬ URL: https://phet-dev.colorado.edu/html/blackbody-spectrum/1.0.0-dev.13/phet/blackbody-spectrum_en_phet.html Version: 1.0.0-dev.13 2019-02-12 21:36:32 UTC Flags: pixelRatioScaling User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:65.0) Gecko/20100101 Firefox/65.0 Language: en-US Window: 1536x760 Pixel Ratio: 2.5/1 WebGL: WebGL 1.0 GLSL: WebGL GLSL ES 1.0 Vendor: Mozilla (Mozilla) Vertex: attribs: 16 varying: 30 uniform: 4096 Texture: size: 16384 imageUnits: 16 (vertex: 16, combined: 32) Max viewport: 32767x32767 OES_texture_float: true Dependencies JSON: {}
KatieWoe commented 5 years ago

This is much more pronounced, and through the entire thermometer, when saved lines at low temps are present.

KatieWoe commented 5 years ago

This shows the lag better than the earlier example: betteratshowinglag

arnabp commented 5 years ago

I believe the problem has been identified. Will keep this open to watch out for in future rounds of testing

KatieWoe commented 5 years ago

Looks a fair bit better. Will continue to keep an out and close if nothing else shows up.

JRomero0613 commented 5 years ago

Looks better, tested on Safari on Jordan.

KatieWoe commented 5 years ago

Seems good