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lottie: fix gradient populating

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When populating the gradient, the color/alpha should
be assigned the first possible value from the provided
ones, rather than the default value of 255.
This commit is contained in:
Mira Grudzinska 2024-09-30 13:59:52 +02:00 • committed by Hermet Park
parent f446e5d079
commit 1c48cd3cdc
1 changed files with 6 additions and 2 deletions
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8
src/loaders/lottie/tvgLottieModel.cpp
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@ -216,7 +216,7 @@ uint32_t LottieGradient::populate(ColorStop& color)
if (output.count > 0) {
auto p = ((*color.input)[cidx] - output.last().offset) / ((*color.input)[aidx] - output.last().offset);
cs.a = lerp<uint8_t>(output.last().a, (uint8_t)nearbyint((*color.input)[aidx + 1] * 255.0f), p);
} else cs.a = 255;
} else cs.a = (uint8_t)nearbyint((*color.input)[aidx + 1] * 255.0f);
cidx += 4;
} else {
cs.offset = (*color.input)[aidx];
@ -227,7 +227,11 @@ uint32_t LottieGradient::populate(ColorStop& color)
cs.r = lerp<uint8_t>(output.last().r, (uint8_t)nearbyint((*color.input)[cidx + 1] * 255.0f), p);
cs.g = lerp<uint8_t>(output.last().g, (uint8_t)nearbyint((*color.input)[cidx + 2] * 255.0f), p);
cs.b = lerp<uint8_t>(output.last().b, (uint8_t)nearbyint((*color.input)[cidx + 3] * 255.0f), p);
} else cs.r = cs.g = cs.b = 255;
} else {
cs.r = (uint8_t)nearbyint((*color.input)[cidx + 1] * 255.0f);
cs.g = (uint8_t)nearbyint((*color.input)[cidx + 2] * 255.0f);
cs.b = (uint8_t)nearbyint((*color.input)[cidx + 3] * 255.0f);
}
aidx += 2;
}
output.push(cs);