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- change previous /0 fix: as suggested here: cb8ae0b560 (commitcomment-53414064)

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This commit is contained in:
Rachael Alexanderson 2021-07-13 06:32:38 -04:00
parent 0cffeef2c6
commit eb2646b613
1 changed files with 2 additions and 6 deletions
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8
src/common/fonts/v_font.cpp
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@ -673,10 +673,6 @@ void V_ApplyLuminosityTranslation(int translation, uint8_t* pixel, int size)
int lum_range = (lum_max - lum_min + 1); int lum_range = (lum_max - lum_min + 1);
PalEntry* remap = paletteptr + colorrange * 256; PalEntry* remap = paletteptr + colorrange * 256;
// why was this ever allowed to divide by zero?
if (!lum_max)
lum_max++;
for (int i = 0; i < size; i++, pixel += 4) for (int i = 0; i < size; i++, pixel += 4)
{ {
// we must also process the transparent pixels here to ensure proper filtering on the characters' edges. // we must also process the transparent pixels here to ensure proper filtering on the characters' edges.
@ -685,13 +681,13 @@ void V_ApplyLuminosityTranslation(int translation, uint8_t* pixel, int size)
int index = clamp(lumadjust, 0, 255); int index = clamp(lumadjust, 0, 255);
PalEntry newcol = remap[index]; PalEntry newcol = remap[index];
// extend the range if we find colors outside what initial analysis provided. // extend the range if we find colors outside what initial analysis provided.
if (gray < lum_min) if (gray < lum_min && lum_min != 0)
{ {
newcol.r = newcol.r * gray / lum_min; newcol.r = newcol.r * gray / lum_min;
newcol.g = newcol.g * gray / lum_min; newcol.g = newcol.g * gray / lum_min;
newcol.b = newcol.b * gray / lum_min; newcol.b = newcol.b * gray / lum_min;
} }
else if (gray > lum_max) else if (gray > lum_max && lum_max != 0)
{ {
newcol.r = clamp(newcol.r * gray / lum_max, 0, 255); newcol.r = clamp(newcol.r * gray / lum_max, 0, 255);
newcol.g = clamp(newcol.g * gray / lum_max, 0, 255); newcol.g = clamp(newcol.g * gray / lum_max, 0, 255);