Color conversion functions used by the pw_display draw library and tests.
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using | pw::display::ColorRgba8888 = uint32_t |
| | Base type for pixels in RGBA8888 format.
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using | pw::display::ColorRgb565 = uint16_t |
| | Base type for pixels in RGB565 format.
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◆ EncodeRgb565()
| constexpr ColorRgb565 pw::display::EncodeRgb565 |
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uint8_t |
r, |
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uint8_t |
g, |
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uint8_t |
b |
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constexpr |
Encode an RGB565 value from individual red, green, blue and alpha values.
This will introduce some loss in color as values are mapped from 8 bits per color down to 5 for red, 6 for green, and 5 for blue.
◆ EncodeRgba8888() [1/2]
Encode an RGBA8888 value from RGB565.
This will scale each color up to 8 bits per pixel. Red and blue are scaled from 5 bits to 8 bits. Green from 6 bits to 8 bits. There is no alpha channel in the RGB565 format so alpha is set to 255 representing 100% opaque.
◆ EncodeRgba8888() [2/2]
| constexpr ColorRgba8888 pw::display::EncodeRgba8888 |
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uint8_t |
r, |
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uint8_t |
g, |
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uint8_t |
b, |
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uint8_t |
a |
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) |
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constexpr |
Encode an RGBA8888 value from individual red, green, blue and alpha values.
1.9.6 