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fix div/0

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Glenn Maynard
2002-11-02 21:20:18 +00:00
parent 2e3b122c68
commit afcd1ff1c6
1 changed files with 5 additions and 1 deletions
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stepmania/src/SDL_dither.cpp
+4
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@@ -74,6 +74,10 @@ void SM_SDL_OrderedDither(const SDL_Surface *src, SDL_Surface *dst)
{ {
int MaxInputIntensity = (1 << src_cbits[i])-1; int MaxInputIntensity = (1 << src_cbits[i])-1;
int MaxOutputIntensity = (1 << dst_cbits[i])-1; int MaxOutputIntensity = (1 << dst_cbits[i])-1;
/* If the source is missing the channel, avoid div/0. */
if(MaxInputIntensity == 0)
conv[i] = 0;
else
conv[i] = MaxOutputIntensity * 65536 / MaxInputIntensity; conv[i] = MaxOutputIntensity * 65536 / MaxInputIntensity;
} }