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- fix decals looking blackened due to low lookup table precision when alpha is zero

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This commit is contained in:
Magnus Norddahl 2018-12-21 10:15:09 +01:00
parent 9fab5f3b2c
commit b64dfb54a5
1 changed files with 13 additions and 7 deletions
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20
src/swrenderer/drawers/r_draw_pal.cpp
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@ -1385,9 +1385,12 @@ namespace swrenderer
do
{
uint32_t val = colormap[source[frac >> FRACBITS]];
uint32_t fg = fgstart[val << 8];
val = (Col2RGB8[64 - val][*dest] + fg) | 0x1f07c1f;
*dest = RGB32k.All[val & (val >> 15)];
if (val != 0)
{
uint32_t fg = fgstart[val << 8];
val = (Col2RGB8[64 - val][*dest] + fg) | 0x1f07c1f;
*dest = RGB32k.All[val & (val >> 15)];
}
dest += pitch;
frac += fracstep;
@ -1400,10 +1403,13 @@ namespace swrenderer
{
uint32_t val = colormap[source[frac >> FRACBITS]] << 2;
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)];
if (val != 0)
{
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;
frac += fracstep;