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fix some bugs in interpolate_specular()

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This commit is contained in:
Brian Paul
2006-11-01 00:13:16 +00:00
parent 90fcf6ccc3
commit e6f47d1855
1 changed files with 29 additions and 23 deletions
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src/mesa/swrast/s_span.c
+29 -23
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@@ -353,32 +353,38 @@ interpolate_specular(SWspan *span)
case GL_FLOAT:
{
GLfloat (*spec)[4] = span->array->color.sz4.spec;
#if CHAN_BITS <= 16
GLfloat r = CHAN_TO_FLOAT(FixedToChan(span->specRed));
GLfloat g = CHAN_TO_FLOAT(FixedToChan(span->specGreen));
GLfloat b = CHAN_TO_FLOAT(FixedToChan(span->specBlue));
#else
GLfloat r = span->specRed;
GLfloat g = span->specGreen;
GLfloat b = span->specBlue;
#endif
GLfloat dr, dg, db;
if (span->interpMask & SPAN_FLAT) {
GLfloat color[4];
color[RCOMP] = span->specRed;
color[GCOMP] = span->specGreen;
color[BCOMP] = span->specBlue;
color[ACOMP] = 0.0F;
for (i = 0; i < n; i++) {
COPY_4V(spec[i], color);
}
dr = dg = db = 0.0;
}
else {
GLfloat r = span->specRed;
GLfloat g = span->specGreen;
GLfloat b = span->specBlue;
GLfloat dr = span->specRedStep;
GLfloat dg = span->specGreenStep;
GLfloat db = span->specBlueStep;
for (i = 0; i < n; i++) {
spec[i][RCOMP] = r;
spec[i][GCOMP] = g;
spec[i][BCOMP] = b;
spec[i][ACOMP] = 0.0F;
r += dr;
g += dg;
b += db;
}
#if CHAN_BITS <= 16
dr = CHAN_TO_FLOAT(FixedToChan(span->specRedStep));
dg = CHAN_TO_FLOAT(FixedToChan(span->specGreenStep));
db = CHAN_TO_FLOAT(FixedToChan(span->specBlueStep));
#else
dr = span->specRedStep;
dg = span->specGreenStep;
db = span->specBlueStep;
#endif
}
for (i = 0; i < n; i++) {
spec[i][RCOMP] = r;
spec[i][GCOMP] = g;
spec[i][BCOMP] = b;
spec[i][ACOMP] = 0.0F;
r += dr;
g += dg;
b += db;
}
}
break;