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Render dimmed DMD using shaded palette #392

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Dec 21, 2024
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Render dimmed DMD using shaded palette #392

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6 changes: 5 additions & 1 deletion src/wpc/core.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2013,6 +2013,8 @@ static void drawChar(struct mame_bitmap *bitmap, int row, int col, UINT16 seg_bi
}
}

#define DMD_PAL(x) ((unsigned int)sizeof(core_palette)/3u - 48u + ((unsigned int)(x) * 47u) / 255u) // The trail of PinMAME palette has 48 DMD dot shades
const UINT8 lum4[] = { 0, 85, 170, 255 };
for (kk = 0; kk < s->rows; kk++) {
BMTYPE * __restrict line = &((BMTYPE **)(bitmap->line))[row+kk][col + s->cols];
// size is limited to 15 cols
Expand All @@ -2021,11 +2023,13 @@ static void drawChar(struct mame_bitmap *bitmap, int row, int col, UINT16 seg_bi
for (ll = 0; ll < s->cols; ll++, p >>= 2, np >>= 2)
{
if (p & 0x03) // segment set?
*(--line) = dimming ? dim_LUT[(p & 0x03)-1][dim[kk][ll]] : Machine->pens[palSize - 33 + (3 - (p & 0x03))*16];
//*(--line) = dimming ? dim_LUT[(p & 0x03)-1][dim[kk][ll]] : Machine->pens[palSize - 33 + (3 - (p & 0x03))*16];
*(--line) = dimming ? DMD_PAL((dim[kk][ll] * (4u - (p & 3))) / 3u) : DMD_PAL(((4u - (p & 3)) * 255u) / 3u);
else
*(--line) = Machine->pens[offPens[np & 0x03]];
}
}
#undef DMD_PAL
}


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