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Implement transparency handling

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Though none of this has been tested so far...
This commit is contained in:
ISSOtm
2022-03-13 11:28:20 +01:00
committed by Eldred Habert
parent e86eb9337a
commit 3c9d5b05d6
6 changed files with 32 additions and 24 deletions
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6
src/gfx/pal_sorting.cpp
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@@ -30,15 +30,15 @@ void indexed(std::vector<Palette> &palettes, int palSize, png_color const *palRG
Palette &palette = palettes[0];
// Build our candidate array of colors
decltype(palette.colors) colors{UINT16_MAX, UINT16_MAX, UINT16_MAX, UINT16_MAX};
for (int i = 0; i < options.maxPalSize(); ++i) {
colors[i] = pngToRgb(i).cgbColor();
for (int i = 0; i < options.maxOpaqueColors(); ++i) {
colors[i + options.hasTransparentPixels] = pngToRgb(i).cgbColor();
}
// Check that the palette only uses those colors
if (std::all_of(palette.begin(), palette.end(), [&colors](uint16_t color) {
return std::find(colors.begin(), colors.end(), color) != colors.end();
})) {
if (palette.size() != options.maxPalSize()) {
if (palette.size() != options.maxOpaqueColors()) {
warning("Unused color in PNG embedded palette was re-added; please use `-c "
"embedded` to get this in future versions");
}