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kdrive/savage: Long lines cant be drawn with accelerator

This commit is contained in:
Keith Packard 2001-10-24 20:14:52 +00:00
parent 28fd5f7525
commit a8518b3561
1 changed files with 47 additions and 20 deletions
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67
hw/kdrive/savage/s3draw.c
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@ -22,7 +22,7 @@
*
* Author: Keith Packard, SuSE, Inc.
*/
/* $XFree86: xc/programs/Xserver/hw/kdrive/savage/s3draw.c,v 1.5 2000/08/09 17:52:41 keithp Exp $ */
/* $XFree86: xc/programs/Xserver/hw/kdrive/savage/s3draw.c,v 1.6 2001/05/29 04:54:11 keithp Exp $ */
#include "s3.h"
#include "s3draw.h"
@ -1682,14 +1682,15 @@ s3PolyTEGlyphBlt (DrawablePtr pDrawable, GCPtr pGC,
s3ImageTEGlyphBlt (pDrawable, pGC, x, y, nglyph, ppci, (pointer) 1);
}
void
Bool
_s3Segment (DrawablePtr pDrawable,
GCPtr pGC,
int x1,
int y1,
int x2,
int y2,
Bool drawLast)
Bool drawLast,
Bool s3Set)
{
SetupS3(pDrawable->pScreen);
FbGCPrivPtr pPriv = fbGetGCPrivate(pGC);
@ -1709,19 +1710,11 @@ _s3Segment (DrawablePtr pDrawable,
unsigned int oc1; /* outcode of point 1 */
unsigned int oc2; /* outcode of point 2 */
s3SetGlobalBitmap (pDrawable->pScreen, s3GCMap (pGC));
nBox = REGION_NUM_RECTS (pClip);
pBox = REGION_RECTS (pClip);
CalcLineDeltas(x1, y1, x2, y2, adx, ady, signdx, signdy,
1, 1, octant);
cmd = LASTPIX;
if (signdx > 0)
cmd |= INC_X;
if (signdy > 0)
cmd |= INC_Y;
if (adx > ady)
{
axis = X_AXIS;
@ -1741,8 +1734,26 @@ _s3Segment (DrawablePtr pDrawable,
len = ady;
}
/* S3 line drawing hardware has limited resolution for error terms */
if (len >= 4096)
{
int dashOff = 0;
KdCheckSync (pDrawable->pScreen);
fbSegment (pDrawable, pGC, x1, y1, x2, y2, drawLast, &dashOff);
return FALSE;
}
FIXUP_ERROR (e, octant, bias);
nBox = REGION_NUM_RECTS (pClip);
pBox = REGION_RECTS (pClip);
if (signdx > 0)
cmd |= INC_X;
if (signdy > 0)
cmd |= INC_Y;
/* we have bresenham parameters and two points.
all we have to do now is clip and draw.
*/
@ -1757,6 +1768,12 @@ _s3Segment (DrawablePtr pDrawable,
OUTCODES(oc2, x2, y2, pBox);
if ((oc1 | oc2) == 0)
{
if (!s3Set)
{
s3SetGlobalBitmap (pDrawable->pScreen, s3GCMap (pGC));
_s3SetSolidFill (s3, pGC->fgPixel, pGC->alu, pGC->planemask);
s3Set = TRUE;
}
_s3SetCur (s3, x1, y1);
_s3ClipLine (s3, cmd, e1, e2, e, len);
break;
@ -1801,12 +1818,19 @@ _s3Segment (DrawablePtr pDrawable,
else
err += (e2 - e1) * clipdx + e1 * clipdy;
}
if (!s3Set)
{
s3SetGlobalBitmap (pDrawable->pScreen, s3GCMap (pGC));
_s3SetSolidFill (s3, pGC->fgPixel, pGC->alu, pGC->planemask);
s3Set = TRUE;
}
_s3SetCur (s3, new_x1, new_y1);
_s3ClipLine (s3, cmd, e1, e2, err, len);
}
pBox++;
}
} /* while (nBox--) */
return s3Set;
}
void
@ -1816,11 +1840,11 @@ s3Polylines (DrawablePtr pDrawable, GCPtr pGC,
SetupS3(pDrawable->pScreen);
int x, y, nx, ny;
int ox = pDrawable->x, oy = pDrawable->y;
Bool s3Set = FALSE;
if (!npt)
return;
_s3SetSolidFill (s3, pGC->fgPixel, pGC->alu, pGC->planemask);
x = ppt->x + ox;
y = ppt->y + oy;
while (--npt)
@ -1836,12 +1860,14 @@ s3Polylines (DrawablePtr pDrawable, GCPtr pGC,
nx = ppt->x + ox;
ny = ppt->y + oy;
}
_s3Segment (pDrawable, pGC, x, y, nx, ny,
npt == 1 && pGC->capStyle != CapNotLast);
s3Set = _s3Segment (pDrawable, pGC, x, y, nx, ny,
npt == 1 && pGC->capStyle != CapNotLast,
s3Set);
x = nx;
y = ny;
}
MarkSyncS3 (pDrawable->pScreen);
if (s3Set)
MarkSyncS3 (pDrawable->pScreen);
}
void
@ -1862,17 +1888,18 @@ s3PolySegment (DrawablePtr pDrawable, GCPtr pGC,
CARD32 cmd;
CARD32 init_cmd;
Bool drawLast;
Bool s3Set = FALSE;
drawLast = pGC->capStyle != CapNotLast;
_s3SetSolidFill (s3, pGC->fgPixel, pGC->alu, pGC->planemask);
for (nseg = nsegInit, pSeg = pSegInit; nseg--; pSeg++)
{
_s3Segment (pDrawable, pGC, pSeg->x1 + ox, pSeg->y1 + oy,
pSeg->x2 + ox, pSeg->y2 + oy, drawLast);
s3Set = _s3Segment (pDrawable, pGC, pSeg->x1 + ox, pSeg->y1 + oy,
pSeg->x2 + ox, pSeg->y2 + oy, drawLast, s3Set);
}
MarkSyncS3 (pDrawable->pScreen);
if (s3Set)
MarkSyncS3 (pDrawable->pScreen);
}
/*