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[Merged by Bors] - Add conversions from Color to u32 #4088

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[Merged by Bors] - Add conversions from Color to u32 #4088

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Azorlogh
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@Azorlogh Azorlogh commented Mar 3, 2022

Objective

Solution

  • Added Color::as_rgba_u32 and Color::as_linear_rgba_u32

@github-actions github-actions bot added the S-Needs-Triage This issue needs to be labelled label Mar 3, 2022
@alice-i-cecile alice-i-cecile added A-Rendering Drawing game state to the screen C-Usability A simple quality-of-life change that makes Bevy easier to use and removed S-Needs-Triage This issue needs to be labelled labels Mar 3, 2022
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alice-i-cecile approved these changes Mar 3, 2022
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Looks good! Thanks :)

superdump
superdump requested changes Mar 3, 2022
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Minor comment typo. LGTM.

crates/bevy_render/src/color/mod.rs Outdated
}
}

/// Converts a `Color` to a `u32` from linear RBG colorspace
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/// Converts a `Color` to a `u32` from linear RBG colorspace
/// Converts a `Color` to a `u32` from linear RGB colorspace

@superdump superdump mentioned this pull request Mar 3, 2022
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@alice-i-cecile alice-i-cecile added the S-Ready-For-Final-Review This PR has been approved by the community. It's ready for a maintainer to consider merging it label Mar 4, 2022
mockersf
mockersf reviewed Mar 5, 2022
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crates/bevy_render/src/color/mod.rs Outdated
@@ -487,6 +487,92 @@ impl Color {
} => [hue, saturation, lightness, alpha],
}
}

/// Converts a `Color` to a `u32` from sRGB colorspace.
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Would it makes sense to describe how the colour is converted to u32 (each channel as a u8, order as alpha-blue-green-red) or is it standard enough to do it that way?

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I think it should be described. Perhaps both endianness (it wasn’t obvious to me a while ago that GPUs were generally little endian) and order.

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Should I change the comment to the following?
Converts Color to a u32 from sRGB colorspace, mapping the RGBA channels in this order to a little-endian byte array (meaning A will be the most significant byte and R the least significant).

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Sounds good to me.

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Suggested change
/// Converts a `Color` to a `u32` from sRGB colorspace.
/// Converts Color to a u32 from sRGB colorspace
///
/// Maps the RGBA channels in RGBA order to a little-endian byte array (GPUs are little-endian).
/// A will be the most significant byte and R the least significant.

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A will be the most significant byte

that took me two reads to understand, with "will" being also a noun 😄

@alice-i-cecile alice-i-cecile mentioned this pull request Mar 7, 2022
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mockersf commented Mar 8, 2022

bors r+

bors bot pushed a commit that referenced this pull request Mar 8, 2022
@Azorlogh
Add conversions from Color to u32 (#4088)
e36c9b6 
# Objective

- `Mesh::ATTRIBUTE_COLOR` expects colors as `u32`s but there is no function for easy conversion.
- See #4037 (review)

## Solution

- Added `Color::as_rgba_u32` and `Color::as_linear_rgba_u32`
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bors bot commented Mar 8, 2022

Pull request successfully merged into main.

Build succeeded:

@bors bors bot changed the title Add conversions from Color to u32 [Merged by Bors] - Add conversions from Color to u32 Mar 8, 2022
@bors bors bot closed this Mar 8, 2022
@rparrett rparrett mentioned this pull request Mar 29, 2022
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bors bot pushed a commit that referenced this pull request Mar 29, 2022
@rparrett
Clean up duplicated color conversion code (#4360)
7ff3d87 
# Objective

Cleans up some duplicated color -> u32 conversion code in `bevy_sprite` and `bevy_ui`

## Solution

Use `as_linear_rgba_u32` which was added recently by #4088
aevyrie pushed a commit to aevyrie/bevy that referenced this pull request Jun 7, 2022
@Azorlogh @aevyrie
Add conversions from Color to u32 (bevyengine#4088)
cb56563 
# Objective

- `Mesh::ATTRIBUTE_COLOR` expects colors as `u32`s but there is no function for easy conversion.
- See bevyengine#4037 (review)

## Solution

- Added `Color::as_rgba_u32` and `Color::as_linear_rgba_u32`
aevyrie pushed a commit to aevyrie/bevy that referenced this pull request Jun 7, 2022
@rparrett @aevyrie
Clean up duplicated color conversion code (bevyengine#4360)
08c08e4 
# Objective

Cleans up some duplicated color -> u32 conversion code in `bevy_sprite` and `bevy_ui`

## Solution

Use `as_linear_rgba_u32` which was added recently by bevyengine#4088
ItsDoot pushed a commit to ItsDoot/bevy that referenced this pull request Feb 1, 2023
@Azorlogh @ItsDoot
Add conversions from Color to u32 (bevyengine#4088)
947adbb 
# Objective

- `Mesh::ATTRIBUTE_COLOR` expects colors as `u32`s but there is no function for easy conversion.
- See bevyengine#4037 (review)

## Solution

- Added `Color::as_rgba_u32` and `Color::as_linear_rgba_u32`
ItsDoot pushed a commit to ItsDoot/bevy that referenced this pull request Feb 1, 2023
@rparrett @ItsDoot
Clean up duplicated color conversion code (bevyengine#4360)
5330510 
# Objective

Cleans up some duplicated color -> u32 conversion code in `bevy_sprite` and `bevy_ui`

## Solution

Use `as_linear_rgba_u32` which was added recently by bevyengine#4088
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