Initial revision

1 files changed, 166 insertions, 0 deletions

diff --git a/src/ffb_sspans.c b/src/ffb_sspans.c
new file mode 100644
index 0000000..3d4b2ae
--- /dev/null
+++ b/src/ffb_sspans.c
@@ -0,0 +1,166 @@
+/*
+ * Acceleration for the Creator and Creator3D framebuffer - Set spans.
+ *
+ * Copyright (C) 1998,1999 Jakub Jelinek (jakub@redhat.com)
+ * Copyright (C) 1999 David S. Miller (davem@redhat.com)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * JAKUB JELINEK OR DAVID MILLER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/sunffb/ffb_sspans.c,v 1.2 2000/05/23 04:47:45 dawes Exp $ */
+
+#include "ffb.h"
+#include "ffb_regs.h"
+#include "ffb_rcache.h"
+#include "ffb_fifo.h"
+
+#include "pixmapstr.h"
+#include "scrnintstr.h"
+
+#define PSZ 8
+#include "cfb.h"
+#undef PSZ
+#include "cfb32.h"
+
+/* PPC does all of the planemask and ROP'ing on the written pixels,
+ * and we know various other things are constant, so this is easy.
+ */
+static void
+CreatorSetScanline(int y, int xOrigin, int xStart, int xEnd,
+		   unsigned int *_psrc, char *sfb, int depth)
+{
+	if (depth == 8) {
+		unsigned char *psrc = (unsigned char *)_psrc;
+		unsigned char *pdst = (unsigned char *)(sfb +
+							(y << 11) +
+							(xStart << 0));
+		int w = xEnd - xStart;
+
+		psrc += (xStart - xOrigin);
+		while(w--)
+			*pdst++ = *psrc++;
+	} else {
+		unsigned int *psrc = (unsigned int *)_psrc;
+		unsigned int *pdst = (unsigned int *)(sfb +
+						      (y << 13) +
+						      (xStart << 2));
+		int w = xEnd - xStart;
+
+		psrc += (xStart - xOrigin);
+		while(w--)
+			*pdst++ = *psrc++;
+	}
+}
+
+void
+CreatorSetSpans(DrawablePtr pDrawable, GCPtr pGC, char *pcharsrc,
+		DDXPointPtr ppt, int *pwidth, int nspans, int fSorted)
+{
+	WindowPtr pWin = (WindowPtr) pDrawable;
+	FFBPtr pFfb = GET_FFB_FROM_SCREEN (pDrawable->pScreen);
+	ffb_fbcPtr ffb = pFfb->regs;
+	unsigned int *psrc = (unsigned int *)pcharsrc;
+	BoxPtr pbox, pboxLast, pboxTest;
+	DDXPointPtr pptLast;
+	RegionPtr prgnDst;
+	char *addrp;
+	int xStart, xEnd, yMax;
+
+	if(pDrawable->type != DRAWABLE_WINDOW) {
+		if (pDrawable->bitsPerPixel == 8)
+			cfbSetSpans(pDrawable, pGC, pcharsrc, ppt,
+				    pwidth, nspans, fSorted);
+		else
+			cfb32SetSpans(pDrawable, pGC, pcharsrc, ppt,
+				      pwidth, nspans, fSorted);
+		return;
+	}
+	FFBLOG(("CreatorSetSpans: ALU(%x) PMSK(%08x) nspans(%d) fsorted(%d)\n",
+		pGC->alu, pGC->planemask, nspans, fSorted));
+	if (pGC->alu == GXnoop)
+		return;
+
+	/* Get SFB ready. */
+	FFB_ATTR_SFB_VAR_WIN(pFfb, pGC->planemask, pGC->alu, pWin);
+	FFBWait(pFfb, ffb);
+
+	if (pGC->depth == 8)
+		addrp = (char *) pFfb->sfb8r;
+	else
+		addrp = (char *) pFfb->sfb32;
+
+	yMax = (int) pDrawable->y + (int) pDrawable->height;
+	prgnDst = cfbGetCompositeClip(pGC);
+	pbox = REGION_RECTS(prgnDst);
+	pboxLast = pbox + REGION_NUM_RECTS(prgnDst);
+	pptLast = ppt + nspans;
+	if(fSorted) {
+		pboxTest = pbox;
+		while(ppt < pptLast) {
+			pbox = pboxTest;
+			if(ppt->y >= yMax)
+				break;
+			while(pbox < pboxLast) {
+				if(pbox->y1 > ppt->y) {
+					break;
+				} else if(pbox->y2 <= ppt->y) {
+					pboxTest = ++pbox;
+					continue;
+				} else if(pbox->x1 > ppt->x + *pwidth) {
+					break;
+				} else if(pbox->x2 <= ppt->x) {
+					pbox++;
+					continue;
+				}
+				xStart = max(pbox->x1, ppt->x);
+				xEnd = min(ppt->x + *pwidth, pbox->x2);
+				CreatorSetScanline(ppt->y, ppt->x, xStart, xEnd,
+						   psrc, addrp, pGC->depth);
+				if(ppt->x + *pwidth <= pbox->x2)
+					break;
+				else
+					pbox++;
+			}
+			ppt++;
+			psrc += *pwidth++;
+		}
+	} else {
+		while(ppt < pptLast) {
+			if(ppt->y >= 0 && ppt->y < yMax) {
+				for(pbox = REGION_RECTS(prgnDst); pbox < pboxLast; pbox++) {
+					if(pbox->y1 > ppt->y) {
+						break;
+					} else if(pbox->y2 <= ppt->y) {
+						pbox++;
+						break;
+					}
+					if(pbox->x1 <= ppt->x + *pwidth &&
+					   pbox->x2 > ppt->x) {
+						xStart = max(pbox->x1, ppt->x);
+						xEnd = min(pbox->x2, ppt->x + *pwidth);
+						CreatorSetScanline(ppt->y, ppt->x,
+								   xStart, xEnd,
+								   psrc, addrp, pGC->depth);
+					}
+				}
+			}
+			ppt++;
+			psrc += *pwidth++;
+		}
+	}
+}