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Implemented an additional setback value for "lef write -hide <value>"

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that produces a result that looks like "lef write -hide" in the middle
but "lef write" around the edge.  Can be useful for catching all the
detail around the edges but obscuring/simplifying the bulk of the cell
interior.
This commit is contained in:
Tim Edwards
2020-09-14 15:54:38 -04:00
parent a52590a10e
commit c3e8ed545d
2 changed files with 143 additions and 14 deletions
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lef/lefWrite.c
+114 -7
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@@ -1095,11 +1095,11 @@ LefWritePinHeader(f, lab)
*/
void
lefWriteMacro(def, f, scale, hide, toplayer)
lefWriteMacro(def, f, scale, setback, toplayer)
CellDef *def; /* Def for which to generate LEF output */
FILE *f; /* Output to this file */
float scale; /* Output distance units conversion factor */
bool hide; /* If TRUE, hide all detail except pins */
int setback; /* If >= 0, hide all detail except pins inside setback */
bool toplayer; /* If TRUE, only output topmost layer of pins */
{
bool propfound, ispwrrail;
@@ -1275,6 +1275,14 @@ lefWriteMacro(def, f, scale, hide, toplayer)
&boundary.r_ybot, &boundary.r_xtop, &boundary.r_ytop);
}
/* Check if (boundry less setback) is degenerate. If so, then */
/* there is no effect of the "-hide" option. */
if (setback > 0)
{
if ((boundary.r_xtop - boundary.r_xbot) < (2 * setback)) setback = -1;
if ((boundary.r_ytop - boundary.r_ybot) < (2 * setback)) setback = -1;
}
/* Write position and size information */
/* Note: Using "0.0 - X" prevents fprintf from generating "negative */
/* zeros" in the output. */
@@ -1399,7 +1407,7 @@ lefWriteMacro(def, f, scale, hide, toplayer)
scx.scx_area = labr;
SelectClear();
if (hide)
if (setback == 0)
{
Rect carea;
labelLinkedList *newlll;
@@ -1423,6 +1431,18 @@ lefWriteMacro(def, f, scale, hide, toplayer)
newlll->lll_next = lll;
lll = newlll;
}
else if (setback > 0)
{
Rect carea;
/* For -hide with setback, select the entire net and then */
/* remove the part inside the setback area. Note that this */
/* does not check if this causes the label to disappear. */
SelectNet(&scx, lab->lab_type, 0, NULL, FALSE);
GEO_EXPAND(&boundary, -setback, &carea);
SelRemoveArea(&carea, &DBAllButSpaceAndDRCBits);
}
else
SelectNet(&scx, lab->lab_type, 0, NULL, FALSE);
@@ -1578,7 +1598,7 @@ lefWriteMacro(def, f, scale, hide, toplayer)
/* Restrict to routing planes only */
if (hide)
if (setback >= 0)
{
/* If details of the cell are to be hidden, then first paint */
/* all route layers with an obstruction rectangle the size of */
@@ -1598,6 +1618,7 @@ lefWriteMacro(def, f, scale, hide, toplayer)
for (ttype = TT_TECHDEPBASE; ttype < DBNumTypes; ttype++)
if (TTMaskHasType(&lmask, ttype))
{
Rect r;
layerBound.r_xbot = layerBound.r_xtop = 0;
for (pNum = PL_TECHDEPBASE; pNum < DBNumPlanes; pNum++)
if (TTMaskHasType(&DBPlaneTypes[pNum], ttype))
@@ -1607,6 +1628,10 @@ lefWriteMacro(def, f, scale, hide, toplayer)
lefGetBound, (ClientData)(&layerBound));
}
/* Clip layerBound to setback boundary */
GEO_EXPAND(&boundary, -setback, &r);
GeoClip(&layerBound, &r);
DBPaint(lc.lefYank, &layerBound, ttype);
}
@@ -1630,6 +1655,43 @@ lefWriteMacro(def, f, scale, hide, toplayer)
DBErase(lc.lefYank, &thislll->lll_area, lab->lab_type);
freeMagic(thislll);
}
if (setback > 0)
{
/* For -hide with setback, yank everything in the area outside */
/* the setback. */
for (pNum = PL_TECHDEPBASE; pNum < DBNumPlanes; pNum++)
{
Rect r;
lc.pNum = pNum;
r = def->cd_bbox;
r.r_ytop = boundary.r_ybot + setback;
DBSrPaintArea((Tile *)NULL, lefFlatDef->cd_planes[pNum],
&r, &DBAllButSpaceAndDRCBits,
lefYankGeometry, (ClientData) &lc);
r = def->cd_bbox;
r.r_ybot = boundary.r_ytop - setback;
DBSrPaintArea((Tile *)NULL, lefFlatDef->cd_planes[pNum],
&r, &DBAllButSpaceAndDRCBits,
lefYankGeometry, (ClientData) &lc);
r = def->cd_bbox;
r.r_ybot = boundary.r_ybot + setback;
r.r_ytop = boundary.r_ytop - setback;
r.r_xtop = boundary.r_xbot + setback;
DBSrPaintArea((Tile *)NULL, lefFlatDef->cd_planes[pNum],
&r, &DBAllButSpaceAndDRCBits,
lefYankGeometry, (ClientData) &lc);
r = def->cd_bbox;
r.r_ybot = boundary.r_ybot + setback;
r.r_ytop = boundary.r_ytop - setback;
r.r_xbot = boundary.r_xtop - setback;
DBSrPaintArea((Tile *)NULL, lefFlatDef->cd_planes[pNum],
&r, &DBAllButSpaceAndDRCBits,
lefYankGeometry, (ClientData) &lc);
}
}
}
else
{
@@ -1652,7 +1714,7 @@ lefWriteMacro(def, f, scale, hide, toplayer)
lefWriteGeometry, (ClientData) &lc);
/* Additional yank & write for contacts (although ignore contacts for -hide) */
if (!hide)
if (setback < 0)
{
lc.lefMode = LEF_MODE_OBS_CONTACT;
DBSrPaintArea((Tile *)NULL, lefFlatDef->cd_planes[pNum],
@@ -1663,6 +1725,51 @@ lefWriteMacro(def, f, scale, hide, toplayer)
lefWriteGeometry, (ClientData) &lc);
lc.lefMode = LEF_MODE_OBSTRUCT;
}
else if (setback > 0)
{
Rect r;
/* Apply only to area outside setback. */
lc.lefMode = LEF_MODE_OBS_CONTACT;
r = def->cd_bbox;
r.r_ytop = boundary.r_ybot + setback;
DBSrPaintArea((Tile *)NULL, lefFlatDef->cd_planes[pNum],
&r, &DBAllButSpaceAndDRCBits,
lefYankContacts, (ClientData) &lc);
DBSrPaintArea((Tile *)NULL, lc.lefYank->cd_planes[pNum],
&r, &lc.rmask, lefWriteGeometry, (ClientData) &lc);
r = def->cd_bbox;
r.r_ybot = boundary.r_ytop - setback;
DBSrPaintArea((Tile *)NULL, lefFlatDef->cd_planes[pNum],
&r, &DBAllButSpaceAndDRCBits,
lefYankContacts, (ClientData) &lc);
DBSrPaintArea((Tile *)NULL, lc.lefYank->cd_planes[pNum],
&r, &lc.rmask, lefWriteGeometry, (ClientData) &lc);
r = def->cd_bbox;
r.r_ybot = boundary.r_ybot + setback;
r.r_ytop = boundary.r_ytop - setback;
r.r_xtop = boundary.r_xbot + setback;
DBSrPaintArea((Tile *)NULL, lefFlatDef->cd_planes[pNum],
&r, &DBAllButSpaceAndDRCBits,
lefYankContacts, (ClientData) &lc);
DBSrPaintArea((Tile *)NULL, lc.lefYank->cd_planes[pNum],
&r, &lc.rmask, lefWriteGeometry, (ClientData) &lc);
r = def->cd_bbox;
r.r_ybot = boundary.r_ybot + setback;
r.r_ytop = boundary.r_ytop - setback;
r.r_xbot = boundary.r_xtop - setback;
DBSrPaintArea((Tile *)NULL, lefFlatDef->cd_planes[pNum],
&r, &DBAllButSpaceAndDRCBits,
lefYankContacts, (ClientData) &lc);
DBSrPaintArea((Tile *)NULL, lc.lefYank->cd_planes[pNum],
&r, &lc.rmask, lefWriteGeometry, (ClientData) &lc);
lc.lefMode = LEF_MODE_OBSTRUCT;
}
}
if (lc.numWrites > 0)
@@ -1843,7 +1950,7 @@ LefWriteAll(rootUse, writeTopCell, lefTech, lefHide, lefTopLayer, recurse)
CellUse *rootUse;
bool writeTopCell;
bool lefTech;
bool lefHide;
int lefHide;
bool lefTopLayer;
bool recurse;
{
@@ -1979,7 +2086,7 @@ LefWriteCell(def, outName, isRoot, lefTech, lefHide, lefTopLayer)
char *outName; /* Name of output file, or NULL. */
bool isRoot; /* Is this the root cell? */
bool lefTech; /* Output layer information if TRUE */
bool lefHide; /* Hide detail other than pins if TRUE */
int lefHide; /* Hide detail other than pins if >= 0 */
bool lefTopLayer; /* Use only topmost layer of pin if TRUE */
{
char *filename;