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legacy-imlib2
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unrolled span rendering a little more (switch stamement is now just once 

per span 0 thats good enough.... :) )


SVN revision: 3491
This commit is contained in:
Carsten Haitzler 2000-09-16 18:16:11 +00:00
parent 6cedec71a8
commit 77a68dc413
1 changed files with 43 additions and 24 deletions
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67
src/rgbadraw.c
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@ -1939,30 +1939,49 @@ span(ImlibImage * im, int y, edgeRec * pt1, edgeRec * pt2, DATA8 r, DATA8 g,
if (ix1 == ix2)
return;
do
{
p = &(im->data[(im->w * y) + ix1]);
switch (op)
{
case OP_RESHADE:
BLEND_RE(r, g, b, a, p);
break;
case OP_SUBTRACT:
BLEND_SUB(r, g, b, a, p);
break;
case OP_ADD:
BLEND_ADD(r, g, b, a, p);
break;
case OP_COPY:
BLEND(r, g, b, a, p);
break;
default:
break;
}
ix1++;
}
while (ix1 < ix2);
p = &(im->data[(im->w * y) + ix1]);
switch (op)
{
/* unrolled loop - on loop inside each render mode per span */
case OP_RESHADE:
do
{
BLEND_RE(r, g, b, a, p);
p++;
ix1++;
}
while (ix1 < ix2);
break;
case OP_SUBTRACT:
do
{
BLEND_SUB(r, g, b, a, p);
p++;
ix1++;
}
while (ix1 < ix2);
break;
case OP_ADD:
do
{
BLEND_ADD(r, g, b, a, p);
p++;
ix1++;
}
while (ix1 < ix2);
break;
case OP_COPY:
do
{
BLEND(r, g, b, a, p);
p++;
ix1++;
}
while (ix1 < ix2);
break;
default:
break;
}
}
void