1 files changed, 148 insertions, 0 deletions
diff --git a/hw/xfree86/xaa/xaaLineMisc.c b/hw/xfree86/xaa/xaaLineMisc.c
new file mode 100644
index 000000000..370921002
--- /dev/null
+++ b/hw/xfree86/xaa/xaaLineMisc.c
@@ -0,0 +1,148 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/xaa/xaaLineMisc.c,v 1.5 1999/01/14 13:05:27 dawes Exp $ */
+
+#include "misc.h"
+#include "xf86.h"
+#include "xf86_ansic.h"
+#include "xf86_OSproc.h"
+
+#include "X.h"
+#include "scrnintstr.h"
+#include "miline.h"
+#include "xf86str.h"
+#include "xaa.h"
+#include "xaalocal.h"
+   
+
+void 
+XAASolidHorVertLineAsRects(
+   ScrnInfoPtr pScrn,
+   int x, int y, int len, int dir
+){
+    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn);
+
+    if(dir == DEGREES_0) 
+	(*infoRec->SubsequentSolidFillRect)(pScrn, x, y, len, 1);
+    else
+	(*infoRec->SubsequentSolidFillRect)(pScrn, x, y, 1, len);
+}
+   
+
+void 
+XAASolidHorVertLineAsTwoPoint(
+   ScrnInfoPtr pScrn,
+   int x, int y, int len, int dir
+){
+    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn);
+
+    len--;
+
+    if(dir == DEGREES_0) 
+	(*infoRec->SubsequentSolidTwoPointLine)(pScrn, x, y, x + len, y, 0);
+    else
+	(*infoRec->SubsequentSolidTwoPointLine)(pScrn, x, y, x, y + len, 0);
+}
+   
+void 
+XAASolidHorVertLineAsBresenham(
+   ScrnInfoPtr pScrn,
+   int x, int y, int len, int dir
+){
+    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn);
+
+    if(dir == DEGREES_0) 
+	(*infoRec->SubsequentSolidBresenhamLine)(
+		pScrn, x, y, len << 1, 0, -len, len, 0);
+    else
+	(*infoRec->SubsequentSolidBresenhamLine)(
+		pScrn, x, y, len << 1, 0, -len, len, YMAJOR);
+}
+
+
+void
+XAAComputeDash(GCPtr pGC)
+{
+    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
+    XAAGCPtr   pGCPriv = (XAAGCPtr) (pGC)->devPrivates[XAAGCIndex].ptr;
+    Bool EvenDash = (pGC->numInDashList & 0x01) ? FALSE : TRUE;
+    int PatternLength = 0;
+    unsigned char* DashPtr = (unsigned char*)pGC->dash;
+    CARD32 *ptr;
+    int count = pGC->numInDashList; 
+    int shift, value, direction;
+    Bool set;
+
+    if(pGCPriv->DashPattern)
+	xfree(pGCPriv->DashPattern);
+
+    pGCPriv->DashPattern = NULL;
+    pGCPriv->DashLength = 0; 
+ 
+    while(count--) 
+	PatternLength += *(DashPtr++);
+
+    if(!EvenDash)
+	PatternLength <<= 1;
+
+    if(PatternLength > infoRec->DashPatternMaxLength) 
+	return;
+
+    if((infoRec->DashedLineFlags & LINE_PATTERN_POWER_OF_2_ONLY) && 
+				(PatternLength & (PatternLength - 1)))
+	return;
+
+    pGCPriv->DashPattern = xcalloc((PatternLength + 31) >> 5, 4);
+    if(!pGCPriv->DashPattern) return;
+    pGCPriv->DashLength = PatternLength;
+
+    if(infoRec->DashedLineFlags & (LINE_PATTERN_LSBFIRST_MSBJUSTIFIED |
+ 	 	 		   LINE_PATTERN_LSBFIRST_LSBJUSTIFIED)) {
+	direction = 1;
+	set = TRUE;
+	DashPtr = (unsigned char*)pGC->dash;
+    } else {
+	direction = -1;
+	set = FALSE;
+	DashPtr = (unsigned char*)pGC->dash + pGC->numInDashList - 1;
+    }
+
+    if(infoRec->DashedLineFlags & (LINE_PATTERN_LSBFIRST_MSBJUSTIFIED |
+ 	 	 		   LINE_PATTERN_MSBFIRST_MSBJUSTIFIED))
+	shift = 32 - (PatternLength & 31);
+    else
+	shift = 0;
+
+    ptr = (CARD32*)(pGCPriv->DashPattern);
+
+CONCATENATE:
+
+    count = pGC->numInDashList;
+
+    while(count--) {
+	value = *DashPtr;
+	DashPtr += direction;
+	while(value) {
+	    if(value < (32 - shift)) {
+		if(set) *ptr |= XAAShiftMasks[value] << shift;
+		shift += value;
+		break;
+	     } else {
+		if(set) *ptr |= ~0L << shift;
+		value -= (32 - shift);
+		shift = 0;
+		ptr++;
+	     }
+	}
+	if(set) set = FALSE;
+	else set = TRUE;
+    }
+
+    if(!EvenDash) {
+	EvenDash = TRUE;
+	if(infoRec->DashedLineFlags & (LINE_PATTERN_LSBFIRST_MSBJUSTIFIED |
+				       LINE_PATTERN_LSBFIRST_LSBJUSTIFIED))
+	   DashPtr = (unsigned char*)pGC->dash;
+	else
+	   DashPtr = (unsigned char*)pGC->dash + pGC->numInDashList;
+	goto CONCATENATE;
+    }
+}