aboutsummaryrefslogtreecommitdiff
path: root/nx-X11/programs/Xserver/fb/fbstipple.c
diff options
context:
space:
mode:
authorReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
committerReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
commitf4092abdf94af6a99aff944d6264bc1284e8bdd4 (patch)
tree2ac1c9cc16ceb93edb2c4382c088dac5aeafdf0f /nx-X11/programs/Xserver/fb/fbstipple.c
parenta840692edc9c6d19cd7c057f68e39c7d95eb767d (diff)
downloadnx-libs-f4092abdf94af6a99aff944d6264bc1284e8bdd4.tar.gz
nx-libs-f4092abdf94af6a99aff944d6264bc1284e8bdd4.tar.bz2
nx-libs-f4092abdf94af6a99aff944d6264bc1284e8bdd4.zip
Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1
Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository
Diffstat (limited to 'nx-X11/programs/Xserver/fb/fbstipple.c')
-rw-r--r--nx-X11/programs/Xserver/fb/fbstipple.c316
1 files changed, 316 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/fb/fbstipple.c b/nx-X11/programs/Xserver/fb/fbstipple.c
new file mode 100644
index 000000000..44aa5f331
--- /dev/null
+++ b/nx-X11/programs/Xserver/fb/fbstipple.c
@@ -0,0 +1,316 @@
+/*
+ * Id: fbstipple.c,v 1.1 1999/11/02 03:54:45 keithp Exp $
+ *
+ * Copyright © 1998 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, 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 Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Keith Packard makes no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD 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.
+ */
+/* $XFree86: xc/programs/Xserver/fb/fbstipple.c,v 1.6 2000/02/23 20:29:47 dawes Exp $ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "fb.h"
+
+#ifndef FBNOPIXADDR
+/*
+ * This is a slight abuse of the preprocessor to generate repetitive
+ * code, the idea is to generate code for each case of a copy-mode
+ * transparent stipple
+ */
+#define LaneCases1(c,a) case c: \
+ while (n--) { (void)FbLaneCase(c,a); a++; } \
+ break
+#define LaneCases2(c,a) LaneCases1(c,a); LaneCases1(c+1,a)
+#define LaneCases4(c,a) LaneCases2(c,a); LaneCases2(c+2,a)
+#define LaneCases8(c,a) LaneCases4(c,a); LaneCases4(c+4,a)
+#define LaneCases16(c,a) LaneCases8(c,a); LaneCases8(c+8,a)
+#define LaneCases32(c,a) LaneCases16(c,a); LaneCases16(c+16,a)
+#define LaneCases64(c,a) LaneCases32(c,a); LaneCases32(c+32,a)
+#define LaneCases128(c,a) LaneCases64(c,a); LaneCases64(c+64,a)
+#define LaneCases256(c,a) LaneCases128(c,a); LaneCases128(c+128,a)
+
+#if FB_SHIFT == 6
+#define LaneCases(a) LaneCases256(0,a)
+#endif
+
+#if FB_SHIFT == 5
+#define LaneCases(a) LaneCases16(0,a)
+#endif
+
+/*
+ * Repeat a transparent stipple across a scanline n times
+ */
+
+void
+fbTransparentSpan (FbBits *dst,
+ FbBits stip,
+ FbBits fgxor,
+ int n)
+{
+ FbStip s;
+
+ s = ((FbStip) (stip ) & 0x01);
+ s |= ((FbStip) (stip >> 8) & 0x02);
+ s |= ((FbStip) (stip >> 16) & 0x04);
+ s |= ((FbStip) (stip >> 24) & 0x08);
+#if FB_SHIFT > 5
+ s |= ((FbStip) (stip >> 32) & 0x10);
+ s |= ((FbStip) (stip >> 40) & 0x20);
+ s |= ((FbStip) (stip >> 48) & 0x40);
+ s |= ((FbStip) (stip >> 56) & 0x80);
+#endif
+ switch (s) {
+ LaneCases(dst);
+ }
+}
+#endif
+
+void
+fbEvenStipple (FbBits *dst,
+ FbStride dstStride,
+ int dstX,
+ int dstBpp,
+
+ int width,
+ int height,
+
+ FbStip *stip,
+ FbStride stipStride,
+ int stipHeight,
+
+ FbBits fgand,
+ FbBits fgxor,
+ FbBits bgand,
+ FbBits bgxor,
+
+ int xRot,
+ int yRot)
+{
+ FbBits startmask, endmask;
+ FbBits mask, and, xor;
+ int nmiddle, n;
+ FbStip *s, *stipEnd, bits;
+ int rot, stipX, stipY;
+ int pixelsPerDst;
+ const FbBits *fbBits;
+ Bool transparent;
+ int startbyte, endbyte;
+
+ /*
+ * Check for a transparent stipple (stencil)
+ */
+ transparent = FALSE;
+ if (dstBpp >= 8 &&
+ fgand == 0 && bgand == FB_ALLONES && bgxor == 0)
+ transparent = TRUE;
+
+ pixelsPerDst = FB_UNIT / dstBpp;
+ /*
+ * Adjust dest pointers
+ */
+ dst += dstX >> FB_SHIFT;
+ dstX &= FB_MASK;
+ FbMaskBitsBytes (dstX, width, fgand == 0 && bgand == 0,
+ startmask, startbyte, nmiddle, endmask, endbyte);
+
+ if (startmask)
+ dstStride--;
+ dstStride -= nmiddle;
+
+ xRot *= dstBpp;
+ /*
+ * Compute stip start scanline and rotation parameters
+ */
+ stipEnd = stip + stipStride * stipHeight;
+ modulus (- yRot, stipHeight, stipY);
+ s = stip + stipStride * stipY;
+ modulus (- xRot, FB_UNIT, stipX);
+ rot = stipX;
+
+ /*
+ * Get pointer to stipple mask array for this depth
+ */
+ fbBits = 0; /* unused */
+ if (pixelsPerDst <= 8)
+ fbBits = fbStippleTable[pixelsPerDst];
+
+ while (height--)
+ {
+ /*
+ * Extract stipple bits for this scanline;
+ */
+ bits = *s;
+ s += stipStride;
+ if (s == stipEnd)
+ s = stip;
+#if FB_UNIT > 32
+ if (pixelsPerDst == 16)
+ mask = FbStipple16Bits(FbLeftStipBits(bits,16));
+ else
+#endif
+ mask = fbBits[FbLeftStipBits(bits,pixelsPerDst)];
+ /*
+ * Rotate into position and compute reduced rop values
+ */
+ mask = FbRotLeft(mask, rot);
+ and = (fgand & mask) | (bgand & ~mask);
+ xor = (fgxor & mask) | (bgxor & ~mask);
+
+#ifndef FBNOPIXADDR
+ if (transparent)
+ {
+ if (startmask)
+ {
+ fbTransparentSpan(dst, mask&startmask, fgxor, 1);
+ dst++;
+ }
+ fbTransparentSpan (dst, mask, fgxor, nmiddle);
+ dst += nmiddle;
+ if (endmask)
+ fbTransparentSpan(dst, mask&endmask, fgxor, 1);
+ }
+ else
+#endif
+ {
+ /*
+ * Fill scanline
+ */
+ if (startmask)
+ {
+ FbDoLeftMaskByteRRop (dst, startbyte, startmask, and, xor);
+ dst++;
+ }
+ n = nmiddle;
+ if (!and)
+ while (n--)
+ *dst++ = xor;
+ else
+ {
+ while (n--)
+ {
+ *dst = FbDoRRop (*dst, and, xor);
+ dst++;
+ }
+ }
+ if (endmask)
+ FbDoRightMaskByteRRop(dst, endbyte, endmask, and, xor);
+ }
+ dst += dstStride;
+ }
+}
+
+void
+fbOddStipple (FbBits *dst,
+ FbStride dstStride,
+ int dstX,
+ int dstBpp,
+
+ int width,
+ int height,
+
+ FbStip *stip,
+ FbStride stipStride,
+ int stipWidth,
+ int stipHeight,
+
+ FbBits fgand,
+ FbBits fgxor,
+ FbBits bgand,
+ FbBits bgxor,
+
+ int xRot,
+ int yRot)
+{
+ int stipX, stipY, sx;
+ int widthTmp;
+ int h, w;
+ int x, y;
+
+ modulus (- yRot, stipHeight, stipY);
+ modulus (dstX / dstBpp - xRot, stipWidth, stipX);
+ y = 0;
+ while (height)
+ {
+ h = stipHeight - stipY;
+ if (h > height)
+ h = height;
+ height -= h;
+ widthTmp = width;
+ x = dstX;
+ sx = stipX;
+ while (widthTmp)
+ {
+ w = (stipWidth - sx) * dstBpp;
+ if (w > widthTmp)
+ w = widthTmp;
+ widthTmp -= w;
+ fbBltOne (stip + stipY * stipStride,
+ stipStride,
+ sx,
+
+ dst + y * dstStride,
+ dstStride,
+ x,
+ dstBpp,
+
+ w, h,
+
+ fgand, fgxor, bgand, bgxor);
+ x += w;
+ sx = 0;
+ }
+ y += h;
+ stipY = 0;
+ }
+}
+
+void
+fbStipple (FbBits *dst,
+ FbStride dstStride,
+ int dstX,
+ int dstBpp,
+
+ int width,
+ int height,
+
+ FbStip *stip,
+ FbStride stipStride,
+ int stipWidth,
+ int stipHeight,
+ Bool even,
+
+ FbBits fgand,
+ FbBits fgxor,
+ FbBits bgand,
+ FbBits bgxor,
+
+ int xRot,
+ int yRot)
+{
+ if (even)
+ fbEvenStipple (dst, dstStride, dstX, dstBpp, width, height,
+ stip, stipStride, stipHeight,
+ fgand, fgxor, bgand, bgxor, xRot, yRot);
+ else
+ fbOddStipple (dst, dstStride, dstX, dstBpp, width, height,
+ stip, stipStride, stipWidth, stipHeight,
+ fgand, fgxor, bgand, bgxor, xRot, yRot);
+}