Initial revision

1 files changed, 130 insertions, 0 deletions

diff --git a/src/ffb_gspans.c b/src/ffb_gspans.c
new file mode 100644
index 0000000..5c00cb7
--- /dev/null
+++ b/src/ffb_gspans.c
@@ -0,0 +1,130 @@
+/*
+ * Acceleration for the Creator and Creator3D framebuffer - Get 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_gspans.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"
+
+void
+CreatorGetSpans(DrawablePtr pDrawable, int wMax, DDXPointPtr ppt,
+		int *pwidth, int nspans, char *pchardstStart)
+{
+	FFBPtr pFfb = GET_FFB_FROM_SCREEN (pDrawable->pScreen);
+	ffb_fbcPtr ffb = pFfb->regs;
+	char *addrp;
+
+	FFBLOG(("CreatorGetSpans: wmax(%d) nspans(%d)\n", wMax, nspans));
+
+	/* Punt early for this case. */
+	if(pDrawable->bitsPerPixel == 1) {
+		mfbGetSpans(pDrawable, wMax, ppt, pwidth,
+			    nspans, pchardstStart);
+		return;
+	}
+
+	/* This code only works when sucking bits directly from
+	 * the framebuffer.
+	 */
+	if(pDrawable->type != DRAWABLE_WINDOW) {
+		if (pDrawable->bitsPerPixel == 8)
+			cfbGetSpans(pDrawable, wMax, ppt, pwidth,
+				    nspans, pchardstStart);
+		else
+			cfb32GetSpans(pDrawable, wMax, ppt, pwidth,
+				      nspans, pchardstStart);
+		return;
+	}
+
+	/*
+	 * XFree86 DDX empties the root borderClip when the VT is
+	 * switched away; this checks for that case
+	 */
+	if (!cfbDrawableEnabled(pDrawable))
+		return;
+    
+	/* We're just reading pixels from SFB, but we could be using
+	 * a different read buffer when double-buffering.
+	 */
+	FFB_ATTR_SFB_VAR_WIN(pFfb, 0x00ffffff, GXcopy, (WindowPtr)pDrawable);
+	FFBWait(pFfb, ffb);
+
+	if (pDrawable->bitsPerPixel == 32) {
+		unsigned int *pdst = (unsigned int *)pchardstStart;
+
+		addrp = (char *) pFfb->sfb32;
+
+		if ((nspans == 1) && (*pwidth == 1)) {
+			*pdst = *(unsigned int *)(addrp + (ppt->y << 13) + (ppt->x << 2));
+			return;
+		}
+
+		while(nspans--) {
+			int w = min(ppt->x + *pwidth, 2048) - ppt->x;
+			unsigned int *psrc = (unsigned int *) (addrp +
+							       (ppt->y << 13) +
+							       (ppt->x << 2));
+			unsigned int *pdstNext = pdst + w;
+
+			while (w--)
+				*psrc++ = *pdst++;
+			pdst = pdstNext;
+			ppt++;
+			pwidth++;
+		}
+	} else {
+		unsigned char *pdst = (unsigned char *)pchardstStart;
+
+		addrp = (char *) pFfb->sfb8r;
+
+		if ((nspans == 1) && (*pwidth == 1)) {
+			*pdst = *(unsigned char *)(addrp + (ppt->y << 11) + (ppt->x << 0));
+			return;
+		}
+
+		while(nspans--) {
+			int w = min(ppt->x + *pwidth, 2048) - ppt->x;
+			unsigned char *psrc = (unsigned char *) (addrp +
+							       (ppt->y << 11) +
+							       (ppt->x << 0));
+			unsigned char *pdstNext = pdst + w;
+
+			while (w--)
+				*psrc++ = *pdst++;
+			pdst = pdstNext;
+			ppt++;
+			pwidth++;
+		}
+	}
+}