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Supposed speedup for TFB_ColorMapToRGB.

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git-svn-id: svn://svn.code.sf.net/p/sc2/code/trunk@153 8092fc87-c524-0410-9efc-e669fe64eaf9
This commit is contained in:
meep-eep
2002-10-26 20:25:47 +00:00
parent a31332695b
commit ea46c0c66d
1 changed files with 10 additions and 7 deletions
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sc2/src/sc2code/libs/graphics/cmap.c
+10 -7
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@@ -42,7 +42,7 @@ void TFB_ColorMapToRGB (TFB_Palette *pal, int colormap_index)
{
DWORD i, k;
UWORD cval;
UBYTE j, r, g, b;
UBYTE j, r, g, b, rtot, gtot, btot;
UBYTE *colors;
colors = (UBYTE*)_varPLUTs + (colormap_index * PLUT_BYTE_SIZE);
@@ -52,16 +52,19 @@ void TFB_ColorMapToRGB (TFB_Palette *pal, int colormap_index)
cval = MAKE_WORD (colors[1], colors[0]);
colors += 2;
r = (UBYTE)((cval >> 10) & 0x1f); // bits 10-14
g = (UBYTE)((cval >> 5) & 0x1f); // bits 5-9
b = (UBYTE)(cval & 0x1f); // bits 0-4
rtot = r = (UBYTE)((cval >> 10) & 0x1f); // bits 10-14
gtot = g = (UBYTE)((cval >> 5) & 0x1f); // bits 5-9
btot = b = (UBYTE)(cval & 0x1f); // bits 0-4
for (j = 0; j < 8; ++j)
{
k = ((j << 5) + i);
pal[k].r = r * (j + 1);
pal[k].g = g * (j + 1);
pal[k].b = b * (j + 1);
pal[k].r = rtot;
rtot += r;
pal[k].g = gtot;
gtot += g;
pal[k].b = btot;
btot += b;
}
}
}