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Merge pull request #773 from jpcima/image-alpha

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Support transparent background images
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JP Cimalando 2021-04-04 01:19:40 +02:00 • committed by GitHub
commit 387297fdc6
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1 changed files with 11 additions and 2 deletions
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13
plugins/editor/src/editor/ImageHelpers.cpp
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@ -42,8 +42,17 @@ SharedPointer<CBitmap> loadAnyFormatImage(const fs::path& filePath)
const unsigned char* pixel = image.get();
do {
CColor c(pixel[0], pixel[1], pixel[2], pixel[3]);
accessor->setColor(c);
uint8_t r = pixel[0];
uint8_t g = pixel[1];
uint8_t b = pixel[2];
uint8_t a = pixel[3];
// premultiply alpha
r = uint8_t((r * a) / 255);
g = uint8_t((g * a) / 255);
b = uint8_t((b * a) / 255);
accessor->setColor(CColor(r, g, b, a));
pixel += 4;
} while (++*accessor);
accessor = nullptr;