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- Fixed overflow for precise blend mode

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This commit is contained in:
Magnus Norddahl 2017-08-29 19:25:05 +02:00
parent 20d7c01fc8
commit 77faab5a75
1 changed files with 6 additions and 6 deletions
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12
src/swrenderer/drawers/r_draw_pal.cpp
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@ -1398,9 +1398,9 @@ namespace swrenderer
{
uint32_t val = colormap[source[frac >> FRACBITS]] << 2;
int r = (palette[*dest].r * (255-val) + palette[color].r * val) >> 10;
int g = (palette[*dest].g * (255-val) + palette[color].g * val) >> 10;
int b = (palette[*dest].b * (255-val) + palette[color].b * val) >> 10;
int r = (palette[*dest].r * (256-val) + palette[color].r * val) >> 10;
int g = (palette[*dest].g * (256-val) + palette[color].g * val) >> 10;
int b = (palette[*dest].b * (256-val) + palette[color].b * val) >> 10;
*dest = RGB256k.RGB[clamp(r,0,63)][clamp(g,0,63)][clamp(b,0,63)];
dest += pitch;
@ -1441,9 +1441,9 @@ namespace swrenderer
{
uint32_t val = colormap[source[frac >> FRACBITS]] << 2;
int r = (palette[*dest].r * (255) + palette[color].r * val) >> 10;
int g = (palette[*dest].g * (255) + palette[color].g * val) >> 10;
int b = (palette[*dest].b * (255) + palette[color].b * val) >> 10;
int r = (palette[*dest].r * (256) + palette[color].r * val) >> 10;
int g = (palette[*dest].g * (256) + palette[color].g * val) >> 10;
int b = (palette[*dest].b * (256) + palette[color].b * val) >> 10;
*dest = RGB256k.RGB[clamp(r,0,63)][clamp(g,0,63)][clamp(b,0,63)];
dest += pitch;