Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2025-08-05 18:42:56 +00:00
Code Issues Projects Releases Packages Wiki Activity

[WIN32K]

Browse source 
Apply proper formatting to polyfill.c

svn path=/trunk/; revision=66645
This commit is contained in:
Timo Kreuzer 2015-03-10 00:11:43 +00:00
parent fe4dc5d9d5
commit 42587dd1d3
1 changed files with 389 additions and 378 deletions
Download patch file Download diff file Expand all files Collapse all files

107
reactos/win32ss/gdi/ntgdi/polyfill.c
View file

@ -77,18 +77,21 @@ FASTCALL
POLYGONFILL_DestroyEdgeList(FILL_EDGE_LIST* list) POLYGONFILL_DestroyEdgeList(FILL_EDGE_LIST* list)
{ {
int i; int i;
if ( list )
if (list)
{ {
if ( list->Edges ) if (list->Edges)
{ {
for ( i = 0; i < list->Count; i++ ) for (i = 0; i < list->Count; i++)
{ {
if ( list->Edges[i] ) if (list->Edges[i])
EngFreeMem ( list->Edges[i] ); EngFreeMem(list->Edges[i]);
} }
EngFreeMem ( list->Edges );
EngFreeMem(list->Edges);
} }
EngFreeMem ( list );
EngFreeMem(list);
} }
} }
@ -188,8 +191,9 @@ POLYGONFILL_ActiveListInsert(FILL_EDGE** activehead, FILL_EDGE* NewEdge )
{ {
FILL_EDGE *pPrev, *pThis; FILL_EDGE *pPrev, *pThis;
//DPRINT1("In POLYGONFILL_ActiveListInsert()\n"); //DPRINT1("In POLYGONFILL_ActiveListInsert()\n");
ASSERT ( activehead && NewEdge ); ASSERT(activehead && NewEdge);
if ( !*activehead )
if (!*activehead)
{ {
NewEdge->pNext = NULL; NewEdge->pNext = NULL;
*activehead = NewEdge; *activehead = NewEdge;
@ -204,6 +208,7 @@ POLYGONFILL_ActiveListInsert(FILL_EDGE** activehead, FILL_EDGE* NewEdge )
*activehead = NewEdge; *activehead = NewEdge;
return; return;
} }
/* /*
** Ok, now scan to the next spot to put this item. ** Ok, now scan to the next spot to put this item.
*/ */
@ -233,7 +238,7 @@ POLYGONFILL_MakeEdgeList(PPOINT Points, int Count)
FILL_EDGE_LIST* list = 0; FILL_EDGE_LIST* list = 0;
FILL_EDGE* e = 0; FILL_EDGE* e = 0;
if ( 0 == Points || 2 > Count ) if (0 == Points || 2 > Count)
return 0; return 0;
list = (FILL_EDGE_LIST*)EngAllocMem(FL_ZERO_MEMORY, sizeof(FILL_EDGE_LIST), FILL_EDGE_ALLOC_TAG); list = (FILL_EDGE_LIST*)EngAllocMem(FL_ZERO_MEMORY, sizeof(FILL_EDGE_LIST), FILL_EDGE_ALLOC_TAG);
@ -244,17 +249,17 @@ POLYGONFILL_MakeEdgeList(PPOINT Points, int Count)
if ( !list->Edges ) if ( !list->Edges )
goto fail; goto fail;
memset ( list->Edges, 0, Count * sizeof(FILL_EDGE*) ); memset(list->Edges, 0, Count * sizeof(FILL_EDGE*));
for ( CurPt = 1; CurPt < Count; ++CurPt ) for (CurPt = 1; CurPt < Count; ++CurPt)
{ {
e = POLYGONFILL_MakeEdge ( Points[CurPt-1], Points[CurPt] ); e = POLYGONFILL_MakeEdge ( Points[CurPt-1], Points[CurPt] );
if ( !e ) if (!e)
goto fail; goto fail;
// If a straight horizontal line - who cares? // If a straight horizontal line - who cares?
if ( !e->absdy ) if (!e->absdy)
EngFreeMem ( e ); EngFreeMem(e);
else else
list->Edges[list->Count++] = e; list->Edges[list->Count++] = e;
} }
@ -262,8 +267,8 @@ POLYGONFILL_MakeEdgeList(PPOINT Points, int Count)
if ( !e ) if ( !e )
goto fail; goto fail;
if ( !e->absdy ) if (!e->absdy)
EngFreeMem ( e ); EngFreeMem(e);
else else
list->Edges[list->Count++] = e; list->Edges[list->Count++] = e;
return list; return list;
@ -287,20 +292,20 @@ void
FASTCALL FASTCALL
POLYGONFILL_UpdateScanline(FILL_EDGE* pEdge, int Scanline) POLYGONFILL_UpdateScanline(FILL_EDGE* pEdge, int Scanline)
{ {
if ( 0 == pEdge->dy ) if (0 == pEdge->dy)
return; return;
ASSERT ( pEdge->FromY <= Scanline && pEdge->ToY > Scanline ); ASSERT(pEdge->FromY <= Scanline && pEdge->ToY > Scanline);
if ( pEdge->xmajor ) if (pEdge->xmajor)
{ {
int steps; int steps;
ASSERT ( pEdge->y == Scanline ); ASSERT(pEdge->y == Scanline);
// Now shoot to end of scanline collision // Now shoot to end of scanline collision
steps = (pEdge->ErrorMax-pEdge->Error-1)/pEdge->absdy; steps = (pEdge->ErrorMax-pEdge->Error-1)/pEdge->absdy;
if ( steps ) if (steps)
{ {
// Record first collision with scanline // Record first collision with scanline
int x1 = pEdge->x; int x1 = pEdge->x;
@ -317,10 +322,10 @@ POLYGONFILL_UpdateScanline(FILL_EDGE* pEdge, int Scanline)
} }
// We should require exactly 1 step to step onto next scanline... // We should require exactly 1 step to step onto next scanline...
ASSERT ( (pEdge->ErrorMax-pEdge->Error-1) / pEdge->absdy == 0 ); ASSERT((pEdge->ErrorMax-pEdge->Error-1) / pEdge->absdy == 0);
pEdge->x += pEdge->XDirection; pEdge->x += pEdge->XDirection;
pEdge->Error += pEdge->absdy; pEdge->Error += pEdge->absdy;
ASSERT ( pEdge->Error >= pEdge->ErrorMax ); ASSERT(pEdge->Error >= pEdge->ErrorMax);
// Now step onto next scanline... // Now step onto next scanline...
pEdge->Error -= pEdge->absdx; pEdge->Error -= pEdge->absdx;
@ -334,7 +339,7 @@ POLYGONFILL_UpdateScanline(FILL_EDGE* pEdge, int Scanline)
pEdge->Error += pEdge->absdx; pEdge->Error += pEdge->absdx;
pEdge->y++; pEdge->y++;
if ( pEdge->Error >= pEdge->ErrorMax ) if (pEdge->Error >= pEdge->ErrorMax)
{ {
pEdge->Error -= pEdge->ErrorMax; pEdge->Error -= pEdge->ErrorMax;
pEdge->x += pEdge->XDirection; pEdge->x += pEdge->XDirection;
@ -352,20 +357,23 @@ POLYGONFILL_UpdateScanline(FILL_EDGE* pEdge, int Scanline)
static static
void void
APIENTRY APIENTRY
POLYGONFILL_BuildActiveList ( int Scanline, FILL_EDGE_LIST* list, FILL_EDGE** ActiveHead ) POLYGONFILL_BuildActiveList(
int Scanline,
FILL_EDGE_LIST* list,
FILL_EDGE** ActiveHead)
{ {
int i; int i;
ASSERT ( list && ActiveHead ); ASSERT(list && ActiveHead);
*ActiveHead = 0; *ActiveHead = 0;
for ( i = 0; i < list->Count; i++ ) for (i = 0; i < list->Count; i++)
{ {
FILL_EDGE* pEdge = list->Edges[i]; FILL_EDGE* pEdge = list->Edges[i];
ASSERT(pEdge); ASSERT(pEdge);
if ( pEdge->FromY <= Scanline && pEdge->ToY > Scanline ) if (pEdge->FromY <= Scanline && pEdge->ToY > Scanline)
{ {
POLYGONFILL_UpdateScanline ( pEdge, Scanline ); POLYGONFILL_UpdateScanline(pEdge, Scanline);
POLYGONFILL_ActiveListInsert ( ActiveHead, pEdge ); POLYGONFILL_ActiveListInsert(ActiveHead, pEdge);
} }
} }
} }
@ -387,18 +395,18 @@ POLYGONFILL_FillScanLineAlternate(
{ {
FILL_EDGE *pLeft, *pRight; FILL_EDGE *pLeft, *pRight;
if ( !ActiveHead ) if (!ActiveHead)
return; return;
pLeft = ActiveHead; pLeft = ActiveHead;
pRight = pLeft->pNext; pRight = pLeft->pNext;
ASSERT(pRight); ASSERT(pRight);
while ( NULL != pRight ) while (NULL != pRight)
{ {
int x1 = pLeft->XIntercept[0]; int x1 = pLeft->XIntercept[0];
int x2 = pRight->XIntercept[1]; int x2 = pRight->XIntercept[1];
if ( x2 > x1 ) if (x2 > x1)
{ {
RECTL BoundRect; RECTL BoundRect;
BoundRect.top = ScanLine; BoundRect.top = ScanLine;
@ -437,7 +445,7 @@ POLYGONFILL_FillScanLineWinding(
int x1, x2, winding = 0; int x1, x2, winding = 0;
RECTL BoundRect; RECTL BoundRect;
if ( !ActiveHead ) if (!ActiveHead)
return; return;
BoundRect.top = ScanLine; BoundRect.top = ScanLine;
@ -463,11 +471,10 @@ POLYGONFILL_FillScanLineWinding(
if ( winding ) if ( winding )
{ {
// Check and see if this new line touches the previous... // Check and see if this new line touches the previous...
if ( (newx1 >= x1 && newx1 <= x2) if ((newx1 >= x1 && newx1 <= x2) ||
|| (newx2 >= x1 && newx2 <= x2) (newx2 >= x1 && newx2 <= x2) ||
|| (x1 >= newx1 && x1 <= newx2) (x1 >= newx1 && x1 <= newx2) ||
|| (x2 >= newx2 && x2 <= newx2) (x2 >= newx2 && x2 <= newx2))
)
{ {
// Yup, just tack it on to our existing line // Yup, just tack it on to our existing line
x1 = min(x1,newx1); x1 = min(x1,newx1);
@ -494,10 +501,12 @@ POLYGONFILL_FillScanLineWinding(
x2 = newx2; x2 = newx2;
} }
} }
pLeft = pRight; pLeft = pRight;
pRight = pLeft->pNext; pRight = pLeft->pNext;
winding += pLeft->YDirection; winding += pLeft->YDirection;
} }
// There will always be a line left-over, render it now... // There will always be a line left-over, render it now...
BoundRect.left = x1; BoundRect.left = x1;
BoundRect.right = x2; BoundRect.right = x2;
@ -545,7 +554,7 @@ FillPolygon(
FILL_EDGE* ActiveHead, FILL_EDGE* ActiveHead,
SURFACE *psurf, SURFACE *psurf,
BRUSHOBJ *BrushObj, BRUSHOBJ *BrushObj,
MIX RopMode ); MIX RopMode);
//DPRINT("FillPolygon\n"); //DPRINT("FillPolygon\n");
@ -555,7 +564,7 @@ FillPolygon(
if (NULL == list) if (NULL == list)
return FALSE; return FALSE;
if ( WINDING == pdcattr->jFillMode ) if (WINDING == pdcattr->jFillMode)
FillScanLine = POLYGONFILL_FillScanLineWinding; FillScanLine = POLYGONFILL_FillScanLineWinding;
else /* Default */ else /* Default */
FillScanLine = POLYGONFILL_FillScanLineAlternate; FillScanLine = POLYGONFILL_FillScanLineAlternate;
@ -563,11 +572,11 @@ FillPolygon(
/* For each Scanline from BoundRect.bottom to BoundRect.top, /* For each Scanline from BoundRect.bottom to BoundRect.top,
* determine line segments to draw * determine line segments to draw
*/ */
for ( ScanLine = BoundRect.top; ScanLine < BoundRect.bottom; ++ScanLine ) for (ScanLine = BoundRect.top; ScanLine < BoundRect.bottom; ++ScanLine)
{ {
POLYGONFILL_BuildActiveList(ScanLine, list, &ActiveHead); POLYGONFILL_BuildActiveList(ScanLine, list, &ActiveHead);
//DEBUG_PRINT_ACTIVE_EDGELIST(ActiveHead); //DEBUG_PRINT_ACTIVE_EDGELIST(ActiveHead);
FillScanLine ( dc, ScanLine, ActiveHead, psurf, BrushObj, RopMode ); FillScanLine(dc, ScanLine, ActiveHead, psurf, BrushObj, RopMode);
} }
/* Free Edge List. If any are left. */ /* Free Edge List. If any are left. */
@ -600,23 +609,24 @@ IntFillPolygon(
return FALSE; return FALSE;
/* For each Scanline from DestRect.top to DestRect.bottom, determine line segments to draw */ /* For each Scanline from DestRect.top to DestRect.bottom, determine line segments to draw */
for ( ScanLine = DestRect.top; ScanLine < DestRect.bottom; ++ScanLine ) for (ScanLine = DestRect.top; ScanLine < DestRect.bottom; ++ScanLine)
{ {
POLYGONFILL_BuildActiveList(ScanLine, list, &ActiveHead); POLYGONFILL_BuildActiveList(ScanLine, list, &ActiveHead);
//DEBUG_PRINT_ACTIVE_EDGELIST(ActiveHead); //DEBUG_PRINT_ACTIVE_EDGELIST(ActiveHead);
if ( !ActiveHead ) if (!ActiveHead)
return FALSE; return FALSE;
pLeft = ActiveHead; pLeft = ActiveHead;
pRight = pLeft->pNext; pRight = pLeft->pNext;
ASSERT(pRight); ASSERT(pRight);
while ( NULL != pRight ) while (NULL != pRight)
{ {
int x1 = pLeft->XIntercept[0]; int x1 = pLeft->XIntercept[0];
int x2 = pRight->XIntercept[1]; int x2 = pRight->XIntercept[1];
if ( x2 > x1 )
if (x2 > x1)
{ {
RECTL LineRect; RECTL LineRect;
LineRect.top = ScanLine; LineRect.top = ScanLine;
@ -636,6 +646,7 @@ IntFillPolygon(
BrushOrigin, BrushOrigin,
ROP4_FROM_INDEX(R3_OPINDEX_PATCOPY)); ROP4_FROM_INDEX(R3_OPINDEX_PATCOPY));
} }
pLeft = pRight->pNext; pLeft = pRight->pNext;
pRight = pLeft ? pLeft->pNext : NULL; pRight = pLeft ? pLeft->pNext : NULL;
} }