1 files changed, 100 insertions, 0 deletions
diff --git a/hw/xfree86/xf4bpp/emulOpStip.c b/hw/xfree86/xf4bpp/emulOpStip.c
new file mode 100644
index 000000000..e9ac98dc9
--- /dev/null
+++ b/hw/xfree86/xf4bpp/emulOpStip.c
@@ -0,0 +1,100 @@
+/* $XFree86: xc/programs/Xserver/hw/xfree86/xf4bpp/emulOpStip.c,v 1.3 1999/06/06 08:48:54 dawes Exp $ */
+/*
+ * Copyright IBM Corporation 1987,1988,1989
+ *
+ * All Rights Reserved
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose and without fee is hereby granted,
+ * provided that the above copyright notice appear in all copies and that 
+ * both that copyright notice and this permission notice appear in
+ * supporting documentation, and that the name of IBM not be
+ * used in advertising or publicity pertaining to distribution of the
+ * software without specific, written prior permission.
+ *
+ * IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+ * IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ *
+*/
+/* $XConsortium: emulOpStip.c /main/4 1996/02/21 17:56:12 kaleb $ */
+
+/* ppc OpaqueStipple
+ *
+ * Based on the private stipple; does a foreground, and then an inverted
+ * on the background 
+ *
+ */
+
+#include "xf4bpp.h"
+#include "OScompiler.h"
+#include "mfbmap.h"
+#include "mfb.h"
+
+void 
+xf4bppOpaqueStipple( pWin, pStipple, fg, bg, alu, planes, x, y, w, h, xSrc, ySrc )
+WindowPtr pWin; /* GJA */
+register PixmapPtr pStipple ;
+unsigned long int fg ;
+unsigned long int bg ;
+int alu ;
+unsigned long int planes ;
+register int x, y, w, h ;
+int xSrc, ySrc ;
+{
+    /* DO BACKGROUND */
+    switch ( alu ) {
+	/* Easy Cases -- i.e. Final Result Doesn't Depend On Initial Dest. */
+	case GXclear:		/* 0x0 Zero 0 */
+	case GXset:		/* 0xf 1 */
+ 	    /* Foreground And Background Are Both The Same !! */
+	    xf4bppFillSolid( pWin, bg, alu, planes, x, y, w, h ) ;
+	case GXnoop:		/* 0x5 dst */
+	    break ;
+	case GXcopy:		/* 0x3 src */
+	case GXcopyInverted:	/* 0xc NOT src */
+	    { /* Special Case Code */
+ 		register int vtarget, htarget ;
+
+ 		/* We Can Draw Just One Copy Then Blit The Rest !! */
+		/* Draw The One Copy */
+		htarget = MIN( w, pStipple->drawable.width ) ;
+		vtarget = MIN( h, pStipple->drawable.height ) ;
+
+		/* First The Background */
+		xf4bppFillSolid( pWin, bg, alu, planes, x, y,
+					htarget, vtarget ) ;
+		/* Then The Foreground */
+		xf4bppFillStipple( pWin, pStipple, fg, alu, planes,
+				       x, y, htarget, vtarget,
+				       xSrc, ySrc ) ;
+
+		/* Here We Double The Size Of The BLIT Each Iteration */
+		xf4bppReplicateArea(pWin, x, y, planes, w, h, htarget, vtarget);
+	    }
+	    break ;
+	default:
+	/* Hard Cases -- i.e. Final Result DOES Depend On Initial Dest. */
+	    { /* Do The Background */
+		register int i, j;
+		register PixmapPtr pInvPixmap = xf4bppCopyPixmap( pStipple ) ;
+		register unsigned char *data = pInvPixmap->devPrivate.ptr ;
+
+		/* INVERT PIXMAP  OK, jeff, this is for you */
+		for ( i = pInvPixmap->drawable.height ; i-- ; )
+			for ( j = pInvPixmap->devKind ; j-- ; data++ )
+				*data = ~ ( *data ) ;
+
+	        xf4bppFillStipple( pWin, pInvPixmap, bg, alu, planes, x, y, w, h, xSrc, ySrc );
+	        mfbDestroyPixmap( pInvPixmap ) ;
+	        /* DO FOREGROUND */
+	        xf4bppFillStipple( pWin, pStipple, fg, alu, planes, x, y, w, h, xSrc, ySrc );
+	    }
+	break ;
+    }
+    return;
+}