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Fix tRNS size calc

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Andrew 2023-05-27 00:10:06 +12:00 committed by Josh Holmer
parent 4ae64c568b
commit 945064d709
1 changed files with 2 additions and 3 deletions
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5
src/png/mod.rs
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@ -279,9 +279,8 @@ impl PngImage {
match &self.ihdr.color_type {
ColorType::Indexed { palette } => {
let plte = 12 + palette.len() * 3;
let trns = palette.iter().filter(|p| p.a != 255).count();
if trns != 0 {
plte + 12 + trns
if let Some(trns) = palette.iter().rposition(|p| p.a != 255) {
plte + 12 + trns + 1
} else {
plte
}