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Avoid an extra palette entry for the mask color in PaletteOptimizer::calculate() (fix #771)

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This commit is contained in:
David Capello 2015-08-24 19:05:36 -03:00
parent 2bb926742f
commit ffba179712
1 changed files with 11 additions and 1 deletions
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12
src/render/quantization.cpp
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@ -379,13 +379,23 @@ void PaletteOptimizer::feedWithRgbaColor(color_t color)
void PaletteOptimizer::calculate(Palette* palette, int maskIndex,
PaletteOptimizerDelegate* delegate)
{
bool addMask;
if ((palette->size() > 1) &&
(maskIndex >= 0 && maskIndex < palette->size())) {
palette->resize(palette->size()-1);
addMask = true;
}
else
addMask = false;
// If the sprite has a background layer, the first entry can be
// used, in other case the 0 indexed will be the mask color, so it
// will not be used later in the color conversion (from RGB to
// Indexed).
int usedColors = m_histogram.createOptimizedPalette(palette);
if (maskIndex >= 0 && maskIndex < usedColors) {
if (addMask) {
palette->resize(usedColors+1);
Remap remap(palette->size());