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MP Core Mixer fade: Use fixed instead of double calc (fixes buildbots)

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mazmazz 2018-09-19 19:18:35 -04:00
parent 1da3b921dd
commit de47ab63f2
1 changed files with 3 additions and 3 deletions
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6
src/sdl/mixer_sound.c
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@ -565,11 +565,11 @@ static UINT32 music_fade(UINT32 interval, void *param)
else else
{ {
UINT8 delta = abs(fading_target - fading_source); UINT8 delta = abs(fading_target - fading_source);
double factor = (double)(fading_duration - fading_timer) / (double)fading_duration; fixed_t factor = FixedDiv(fading_duration - fading_timer, fading_duration);
if (fading_target < fading_source) if (fading_target < fading_source)
internal_volume = max(min(internal_volume, fading_source - (UINT8)round(delta * factor)), fading_target); internal_volume = max(min(internal_volume, fading_source - FixedMul(delta, factor)), fading_target);
else if (fading_target > fading_source) else if (fading_target > fading_source)
internal_volume = min(max(internal_volume, fading_source + (UINT8)round(delta * factor)), fading_target); internal_volume = min(max(internal_volume, fading_source + FixedMul(delta, factor)), fading_target);
Mix_VolumeMusic(get_real_volume(music_volume)); Mix_VolumeMusic(get_real_volume(music_volume));
return interval; return interval;
} }