diff options
Diffstat (limited to 'hw/xfree86/xaa/xaaRect.c')
| -rw-r--r-- | hw/xfree86/xaa/xaaRect.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/hw/xfree86/xaa/xaaRect.c b/hw/xfree86/xaa/xaaRect.c new file mode 100644 index 000000000..fe8d70de2 --- /dev/null +++ b/hw/xfree86/xaa/xaaRect.c @@ -0,0 +1,134 @@ +/* $XFree86: xc/programs/Xserver/hw/xfree86/xaa/xaaRect.c,v 1.3 1999/05/30 03:03:33 dawes Exp $ */ + +#include "misc.h" +#include "xf86.h" +#include "xf86_ansic.h" +#include "xf86_OSproc.h" + +#include "X.h" +#include "scrnintstr.h" +#include "pixmapstr.h" +#include "xf86str.h" +#include "xaa.h" +#include "xaalocal.h" + +/* + Much of this file based on code by + Harm Hanemaayer (H.Hanemaayer@inter.nl.net). +*/ + + +void +XAAPolyRectangleThinSolid( + DrawablePtr pDrawable, + GCPtr pGC, + int nRectsInit, + xRectangle *pRectsInit ) +{ + XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC); + int nClipRects; /* number of clip rectangles */ + BoxPtr pClipRects; /* points to the list of clip rects */ + int xOrigin; /* Drawables x origin */ + int yOrigin; /* Drawables x origin */ + xRectangle *pRect; /* list of rects */ + int nRects; /* running count of number of rects */ + int origX1, origY1; /* original rectangle's U/L corner */ + int origX2, origY2; /* original rectangle's L/R corner */ + int clippedX1; /* clipped rectangle's left x */ + int clippedY1; /* clipped rectangle's top y */ + int clippedX2; /* clipped rectangle's right x */ + int clippedY2; /* clipped rectangle's bottom y */ + int clipXMin; /* upper left corner of clip rect */ + int clipYMin; /* upper left corner of clip rect */ + int clipXMax; /* lower right corner of clip rect */ + int clipYMax; /* lower right corner of clip rect */ + int width, height; /* width and height of rect */ + + nClipRects = REGION_NUM_RECTS(pGC->pCompositeClip); + pClipRects = REGION_RECTS(pGC->pCompositeClip); + + if(!nClipRects) return; + + xOrigin = pDrawable->x; + yOrigin = pDrawable->y; + + + (*infoRec->SetupForSolidLine)(infoRec->pScrn, + pGC->fgPixel, pGC->alu, pGC->planemask); + + + for ( ; nClipRects > 0; + nClipRects--, pClipRects++ ) + { + clipYMin = pClipRects->y1; + clipYMax = pClipRects->y2 - 1; + clipXMin = pClipRects->x1; + clipXMax = pClipRects->x2 - 1; + + for (pRect = pRectsInit, nRects = nRectsInit; + nRects > 0; + nRects--, pRect++ ) + { + /* translate rectangle data over to the drawable */ + origX1 = pRect->x + xOrigin; + origY1 = pRect->y + yOrigin; + origX2 = origX1 + pRect->width; + origY2 = origY1 + pRect->height; + + /* reject entire rectangle if completely outside clip rect */ + if ((origX1 > clipXMax) || (origX2 < clipXMin) || + (origY1 > clipYMax) || (origY2 < clipYMin)) + continue; + + /* clip the rectangle */ + clippedX1 = max (origX1, clipXMin); + clippedX2 = min (origX2, clipXMax); + clippedY1 = max (origY1, clipYMin); + clippedY2 = min (origY2, clipYMax); + + width = clippedX2 - clippedX1 + 1; + + if (origY1 >= clipYMin) { + (*infoRec->SubsequentSolidHorVertLine)(infoRec->pScrn, + clippedX1, clippedY1, width, DEGREES_0); + + /* don't overwrite corner */ + clippedY1++; + } + + if ((origY2 <= clipYMax) && (origY1 != origY2)) { + (*infoRec->SubsequentSolidHorVertLine)(infoRec->pScrn, + clippedX1, clippedY2, width, DEGREES_0); + + /* don't overwrite corner */ + clippedY2--; + } + + if (clippedY2 < clippedY1) continue; + + height = clippedY2 - clippedY1 + 1; + + /* draw vertical edges using lines if not clipped out */ + if (origX1 >= clipXMin) + (*infoRec->SubsequentSolidHorVertLine)(infoRec->pScrn, + clippedX1, clippedY1, height, DEGREES_270); + + if ((origX2 <= clipXMax) && (origX2 != origX1)) + (*infoRec->SubsequentSolidHorVertLine)(infoRec->pScrn, + clippedX2, clippedY1, height, DEGREES_270); + } + } + + SET_SYNC_FLAG(infoRec); +} + + + + + + + + + + + |