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Diffstat (limited to 'xorg-server/hw/xfree86/xaa/xaaLineMisc.c')
-rw-r--r--xorg-server/hw/xfree86/xaa/xaaLineMisc.c151
1 files changed, 151 insertions, 0 deletions
diff --git a/xorg-server/hw/xfree86/xaa/xaaLineMisc.c b/xorg-server/hw/xfree86/xaa/xaaLineMisc.c
new file mode 100644
index 000000000..cefb59a8e
--- /dev/null
+++ b/xorg-server/hw/xfree86/xaa/xaaLineMisc.c
@@ -0,0 +1,151 @@
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include "misc.h"
+#include "xf86.h"
+#include "xf86_OSproc.h"
+
+#include <X11/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)dixLookupPrivate(&pGC->devPrivates,
+ XAAGetGCKey());
+ 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;
+ }
+}