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docs: Fix RGB565 format documentation and bit masks #57210

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merged 3 commits into from
Dec 16, 2024
Merged

docs: Fix RGB565 format documentation and bit masks #57210

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docs: Fix RGB565 format documentation and bit masks\n\nThe RGB565 for…
MyriadSoft Dec 15, 2024
75048c2
Formatting
cbracken Dec 16, 2024
fcb98c2
Minor punctuation + capitalisation fixes
cbracken Dec 16, 2024
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11 changes: 6 additions & 5 deletions shell/platform/embedder/embedder.h
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Original file line number Diff line number Diff line change
Expand Up @@ -327,9 +327,10 @@ typedef enum {
/// occupying the lowest memory address.
///
/// - all other formats are called packed formats, and the component order
/// as specified in the format name refers to the order in the native type.
/// for example, for kFlutterSoftwarePixelFormatRGB565, the R component
/// uses the 5 least significant bits of the uint16_t pixel value.
/// as specified in the format name refers to the order from most significant
/// to least significant bits in the native type.
/// for example, for kFlutterSoftwarePixelFormatRGB565, R occupies the 5 most
/// significant bits, G the middle 6 bits, and B the 5 least significant bits.
///
/// Each pixel format in this list is documented with an example on how to get
/// the color components from the pixel.
Expand All @@ -348,11 +349,11 @@ typedef enum {
kFlutterSoftwarePixelFormatGray8,

/// pixel with 5 bits red, 6 bits green, 5 bits blue, in 16-bit word.
/// r = p & 0x3F; g = (p>>5) & 0x3F; b = p>>11;
/// r = (p >> 11) & 0x1F; g = (p >> 5) & 0x3F; b = p & 0x1F;
kFlutterSoftwarePixelFormatRGB565,

/// pixel with 4 bits for alpha, red, green, blue; in 16-bit word.
/// r = p & 0xF; g = (p>>4) & 0xF; b = (p>>8) & 0xF; a = p>>12;
/// r = (p >> 8) & 0xF; g = (p >> 4) & 0xF; b = p & 0xF; a = (p >> 12) & 0xF;
kFlutterSoftwarePixelFormatRGBA4444,

/// pixel with 8 bits for red, green, blue, alpha.
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