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[Merged by Bors] - changed diagnostics from seconds to milliseconds #5554

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[Merged by Bors] - changed diagnostics from seconds to milliseconds #5554

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McSpidey
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@McSpidey McSpidey commented Aug 2, 2022 •
edited

Co-authored-by: Alice Cecile alice.i.cecile@gmail.com

Objective

Change frametimediagnostic from seconds to milliseconds because this will always be less than one seconds and is the common diagnostic display unit for game engines.

Solution

  • multiplied the existing value by 1000

Changelog

Frametimes are now reported in milliseconds

@SyamaMishra @alice-i-cecile
changed diagnostics from seconds to milliseconds
827e67d 
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
@alice-i-cecile alice-i-cecile added A-Diagnostics Logging, crash handling, error reporting and performance analysis C-Usability A simple quality-of-life change that makes Bevy easier to use labels Aug 2, 2022
@McSpidey @alice-i-cecile
Update crates/bevy_diagnostic/src/frame_time_diagnostics_plugin.rs
7bbb0e3 
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
@mockersf mockersf added the C-Breaking-Change A breaking change to Bevy's public API that needs to be noted in a migration guide label Aug 2, 2022
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You should also update the example accessing that diagnostic. It will make it slightly more complicated as now one of the source of truth is in milliseconds while the other is still in seconds

bevy/examples/ui/text_debug.rs

Lines 169 to 181 in a9cb18e

let mut frame_time = time.delta_seconds_f64();
if let Some(frame_time_diagnostic) = diagnostics.get(FrameTimeDiagnosticsPlugin::FRAME_TIME)
{
if let Some(frame_time_avg) = frame_time_diagnostic.average() {
frame_time = frame_time_avg;
}
}
text.sections[0].value = format!(
"This text changes in the bottom right - {:.1} fps, {:.3} ms/frame",
fps,
frame_time * 1000.0,
);

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mockersf commented Aug 2, 2022

As someone not accustomed to other game engine, seconds is the natural unit for a duration, not milliseconds. Very quick google search seems to show in seconds for unreal, not sure about unity

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McSpidey commented Aug 2, 2022

Unreal and Unity both use milliseconds for frametimes.
https://docs.unrealengine.com/4.27/en-US/TestingAndOptimization/PerformanceAndProfiling/Overview/
https://docs.unity3d.com/Manual/ProfilerCPU.html

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mockersf commented Aug 3, 2022

You're right, for displaying, milliseconds makes a lot more sense.

I was looking for the unit used when accessing timings from code, for that I found seconds

@cart @mockersf
Update crates/bevy_diagnostic/src/frame_time_diagnostics_plugin.rs
187606d 
Co-authored-by: François <mockersf@gmail.com>
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cart approved these changes Aug 4, 2022
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Short term I think this makes sense. Long term we might want to do all unit conversions on the "display side" and store in the "base unit". But thats a conversation for another day.

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cart commented Aug 4, 2022

bors r+

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cart commented Aug 4, 2022

bors r-

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bors bot commented Aug 4, 2022

Canceled.

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cart commented Aug 4, 2022

bors r+

bors bot pushed a commit that referenced this pull request Aug 4, 2022
@McSpidey @SyamaMishra @cart
changed diagnostics from seconds to milliseconds (#5554)
0ffb544 
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>

# Objective

Change frametimediagnostic from seconds to milliseconds because this will always be less than one seconds and is the common diagnostic display unit for game engines.

## Solution

- multiplied the existing value by 1000

---

## Changelog

Frametimes are now reported in milliseconds

Co-authored-by: Syama Mishra <38512086+SyamaMishra@users.noreply.github.com>
Co-authored-by: McSpidey <mcspidey@gmail.com>
Co-authored-by: Carter Anderson <mcanders1@gmail.com>
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bors bot commented Aug 4, 2022

Pull request successfully merged into main.

Build succeeded:

@bors bors bot changed the title changed diagnostics from seconds to milliseconds [Merged by Bors] - changed diagnostics from seconds to milliseconds Aug 4, 2022
@bors bors bot closed this Aug 4, 2022
maccesch pushed a commit to Synphonyte/bevy that referenced this pull request Aug 5, 2022
@McSpidey @SyamaMishra
@cart @maccesch
changed diagnostics from seconds to milliseconds (bevyengine#5554)
302de28 
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>

# Objective

Change frametimediagnostic from seconds to milliseconds because this will always be less than one seconds and is the common diagnostic display unit for game engines.

## Solution

- multiplied the existing value by 1000

---

## Changelog

Frametimes are now reported in milliseconds

Co-authored-by: Syama Mishra <38512086+SyamaMishra@users.noreply.github.com>
Co-authored-by: McSpidey <mcspidey@gmail.com>
Co-authored-by: Carter Anderson <mcanders1@gmail.com>
inodentry pushed a commit to BroovyJammy/bevy that referenced this pull request Aug 19, 2022
@McSpidey @SyamaMishra
@cart @inodentry
changed diagnostics from seconds to milliseconds (bevyengine#5554)
a943d5a 
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>

# Objective

Change frametimediagnostic from seconds to milliseconds because this will always be less than one seconds and is the common diagnostic display unit for game engines.

## Solution

- multiplied the existing value by 1000

---

## Changelog

Frametimes are now reported in milliseconds

Co-authored-by: Syama Mishra <38512086+SyamaMishra@users.noreply.github.com>
Co-authored-by: McSpidey <mcspidey@gmail.com>
Co-authored-by: Carter Anderson <mcanders1@gmail.com>
james7132 pushed a commit to james7132/bevy that referenced this pull request Oct 28, 2022
@McSpidey @SyamaMishra
@cart @james7132
changed diagnostics from seconds to milliseconds (bevyengine#5554)
6b2e5d7 
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>

# Objective

Change frametimediagnostic from seconds to milliseconds because this will always be less than one seconds and is the common diagnostic display unit for game engines.

## Solution

- multiplied the existing value by 1000

---

## Changelog

Frametimes are now reported in milliseconds

Co-authored-by: Syama Mishra <38512086+SyamaMishra@users.noreply.github.com>
Co-authored-by: McSpidey <mcspidey@gmail.com>
Co-authored-by: Carter Anderson <mcanders1@gmail.com>
ItsDoot pushed a commit to ItsDoot/bevy that referenced this pull request Feb 1, 2023
@McSpidey @SyamaMishra
@cart @ItsDoot
changed diagnostics from seconds to milliseconds (bevyengine#5554)
efc9887 
Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>

# Objective

Change frametimediagnostic from seconds to milliseconds because this will always be less than one seconds and is the common diagnostic display unit for game engines.

## Solution

- multiplied the existing value by 1000

---

## Changelog

Frametimes are now reported in milliseconds

Co-authored-by: Syama Mishra <38512086+SyamaMishra@users.noreply.github.com>
Co-authored-by: McSpidey <mcspidey@gmail.com>
Co-authored-by: Carter Anderson <mcanders1@gmail.com>
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A-Diagnostics Logging, crash handling, error reporting and performance analysis C-Breaking-Change A breaking change to Bevy's public API that needs to be noted in a migration guide C-Usability A simple quality-of-life change that makes Bevy easier to use
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