diff options
Diffstat (limited to 'xorg-server/fb/fbstipple.c')
| -rw-r--r-- | xorg-server/fb/fbstipple.c | 616 |
1 files changed, 308 insertions, 308 deletions
diff --git a/xorg-server/fb/fbstipple.c b/xorg-server/fb/fbstipple.c index 1316d5113..dc1fd468f 100644 --- a/xorg-server/fb/fbstipple.c +++ b/xorg-server/fb/fbstipple.c @@ -1,308 +1,308 @@ -/*
- * 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.
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include "fb.h"
-
-/*
- * 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--) { 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);
- }
-}
-
-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
- */
- /* fbStippleTable covers all valid bpp (4,8,16,32) */
- fbBits = fbStippleTable[pixelsPerDst];
-
- while (height--)
- {
- /*
- * Extract stipple bits for this scanline;
- */
- bits = READ(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);
-
- 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
- {
- /*
- * Fill scanline
- */
- if (startmask)
- {
- FbDoLeftMaskByteRRop (dst, startbyte, startmask, and, xor);
- dst++;
- }
- n = nmiddle;
- if (!and)
- while (n--)
- WRITE(dst++, xor);
- else
- {
- while (n--)
- {
- WRITE(dst, FbDoRRop (READ(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);
-}
+/* + * 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. + */ + +#ifdef HAVE_DIX_CONFIG_H +#include <dix-config.h> +#endif + +#include "fb.h" + +/* + * 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--) { 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); + } +} + +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 + */ + /* fbStippleTable covers all valid bpp (4,8,16,32) */ + fbBits = fbStippleTable[pixelsPerDst]; + + while (height--) + { + /* + * Extract stipple bits for this scanline; + */ + bits = READ(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); + + 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 + { + /* + * Fill scanline + */ + if (startmask) + { + FbDoLeftMaskByteRRop (dst, startbyte, startmask, and, xor); + dst++; + } + n = nmiddle; + if (!and) + while (n--) + WRITE(dst++, xor); + else + { + while (n--) + { + WRITE(dst, FbDoRRop (READ(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); +} |