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Fix renderer table gradients

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The unsigned type would overflow when it was asked to represent negative values.
This commit is contained in:
Tamás Bálint Misius
2022-12-27 08:49:32 +01:00
parent 4304bda6d1
commit 6b133aced6
1 changed files with 3 additions and 3 deletions
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6
src/graphics/Graphics.cpp
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@@ -941,9 +941,9 @@ std::vector<pixel> Graphics::Gradient(std::vector<GradientStop> stops, int resol
auto &right = stops[stop + 1];
auto f = (point - left.point) / (right.point - left.point);
table[i] = PIXRGB(
int(PIXR(left.color) + (PIXR(right.color) - PIXR(left.color)) * f),
int(PIXG(left.color) + (PIXG(right.color) - PIXG(left.color)) * f),
int(PIXB(left.color) + (PIXB(right.color) - PIXB(left.color)) * f)
int(int(PIXR(left.color)) + (int(PIXR(right.color)) - int(PIXR(left.color))) * f),
int(int(PIXG(left.color)) + (int(PIXG(right.color)) - int(PIXG(left.color))) * f),
int(int(PIXB(left.color)) + (int(PIXB(right.color)) - int(PIXB(left.color))) * f)
);
}
}