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Prevent light scale overflow (#1605)

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ceski 2024-03-19 23:29:14 -07:00 committed by GitHub
parent 57c2b98999
commit 2cf75df1f3
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src/r_main.c
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@ -480,7 +480,7 @@ void R_SmoothLight(void)
int R_GetLightIndex(fixed_t scale) int R_GetLightIndex(fixed_t scale)
{ {
const int index = FixedDiv(scale * 160, lightfocallength) >> LIGHTSCALESHIFT; const int index = ((int64_t)scale * (160 << FRACBITS) / lightfocallength) >> LIGHTSCALESHIFT;
return BETWEEN(0, MAXLIGHTSCALE - 1, index); return BETWEEN(0, MAXLIGHTSCALE - 1, index);
} }