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Simplify miFillPolyHelper and miLineArc.

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Both functions compute a set of spans and either fill them immediately
or accumulate them into a caller-provided buffer.

Computing the spans used only the miTranslate and lineWidth fields of
pGC, and neither could have been changed by the initial
ChangeGC/ValidateGC pair, so it's safe to compute the spans first.

Then both functions consume the spans the same way, so factor that into
a new fillSpans function.

Signed-off-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Jamey Sharp 2010-05-08 12:06:50 -07:00
parent 83f7ec9727
commit bff8525f84
1 changed files with 27 additions and 52 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

79
mi/miwideline.c
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@ -105,6 +105,31 @@ static void miLineArc(DrawablePtr pDraw, GCPtr pGC,
* spans-based polygon filler
*/
static void
fillSpans(DrawablePtr pDrawable, GCPtr pGC, unsigned long pixel, Spans *spans, SpanDataPtr spanData)
{
if (!spanData)
{
XID oldPixel = pGC->fgPixel;
if (pixel != oldPixel)
{
XID tmpPixel = (XID)pixel;
dixChangeGC (NullClient, pGC, GCForeground, &tmpPixel, NULL);
ValidateGC (pDrawable, pGC);
}
(*pGC->ops->FillSpans) (pDrawable, pGC, spans->count, spans->points, spans->widths, TRUE);
free(spans->widths);
free(spans->points);
if (pixel != oldPixel)
{
dixChangeGC (NullClient, pGC, GCForeground, &oldPixel, NULL);
ValidateGC (pDrawable, pGC);
}
}
else
AppendSpanGroup (pGC, pixel, spans, spanData);
}
static void
miFillPolyHelper (DrawablePtr pDrawable, GCPtr pGC, unsigned long pixel,
SpanDataPtr spanData, int y, int overall_height,
@ -126,27 +151,13 @@ miFillPolyHelper (DrawablePtr pDrawable, GCPtr pGC, unsigned long pixel,
DDXPointPtr ppt;
int *pwidth;
XID oldPixel;
int xorg;
Spans spanRec;
left_height = 0;
right_height = 0;
if (!InitSpans(&spanRec, overall_height))
return;
ppt = spanRec.points;
pwidth = spanRec.widths;
if (!spanData)
{
oldPixel = pGC->fgPixel;
if (pixel != oldPixel)
{
XID tmpPixel = (XID)pixel;
dixChangeGC (NullClient, pGC, GCForeground, &tmpPixel, NULL);
ValidateGC (pDrawable, pGC);
}
}
xorg = 0;
if (pGC->miTranslate)
@ -219,19 +230,7 @@ miFillPolyHelper (DrawablePtr pDrawable, GCPtr pGC, unsigned long pixel,
}
}
spanRec.count = ppt - spanRec.points;
if (!spanData)
{
(*pGC->ops->FillSpans) (pDrawable, pGC, spanRec.count, spanRec.points, spanRec.widths, TRUE);
free(spanRec.widths);
free(spanRec.points);
if (pixel != oldPixel)
{
dixChangeGC (NullClient, pGC, GCForeground, &oldPixel, NULL);
ValidateGC (pDrawable, pGC);
}
}
else
AppendSpanGroup (pGC, pixel, &spanRec, spanData);
fillSpans (pDrawable, pGC, pixel, &spanRec, spanData);
}
static void
@ -1042,7 +1041,6 @@ miLineArc (
Bool isInt)
{
int xorgi = 0, yorgi = 0;
XID oldPixel;
Spans spanRec;
int n;
PolyEdgeRec edge1, edge2;
@ -1088,16 +1086,6 @@ miLineArc (
}
if (!InitSpans(&spanRec, pGC->lineWidth))
return;
if (!spanData)
{
oldPixel = pGC->fgPixel;
if (pixel != oldPixel)
{
XID tmpPixel = (XID)pixel;
dixChangeGC(NullClient, pGC, GCForeground, &tmpPixel, NULL);
ValidateGC (pDraw, pGC);
}
}
if (isInt)
n = miLineArcI(pDraw, pGC, xorgi, yorgi, spanRec.points, spanRec.widths);
else
@ -1105,20 +1093,7 @@ miLineArc (
&edge1, edgey1, edgeleft1,
&edge2, edgey2, edgeleft2);
spanRec.count = n;
if (!spanData)
{
(*pGC->ops->FillSpans)(pDraw, pGC, spanRec.count, spanRec.points, spanRec.widths, TRUE);
free(spanRec.widths);
free(spanRec.points);
if (pixel != oldPixel)
{
dixChangeGC(NullClient, pGC, GCForeground, &oldPixel, NULL);
ValidateGC (pDraw, pGC);
}
}
else
AppendSpanGroup (pGC, pixel, &spanRec, spanData);
fillSpans (pDraw, pGC, pixel, &spanRec, spanData);
}
static void