Initial revision

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);
+} 
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