diff options
Diffstat (limited to 'xorg-server/fb/fbgc.c')
| -rw-r--r-- | xorg-server/fb/fbgc.c | 614 |
1 files changed, 307 insertions, 307 deletions
diff --git a/xorg-server/fb/fbgc.c b/xorg-server/fb/fbgc.c index 8108c3acb..e9511b6c5 100644 --- a/xorg-server/fb/fbgc.c +++ b/xorg-server/fb/fbgc.c @@ -1,307 +1,307 @@ -/* - * 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 <stdlib.h> - -#include "fb.h" - -const GCFuncs fbGCFuncs = { - fbValidateGC, - miChangeGC, - miCopyGC, - miDestroyGC, - miChangeClip, - miDestroyClip, - miCopyClip, -}; - -const GCOps fbGCOps = { - fbFillSpans, - fbSetSpans, - fbPutImage, - fbCopyArea, - fbCopyPlane, - fbPolyPoint, - fbPolyLine, - fbPolySegment, - fbPolyRectangle, - fbPolyArc, - miFillPolygon, - fbPolyFillRect, - fbPolyFillArc, - miPolyText8, - miPolyText16, - miImageText8, - miImageText16, - fbImageGlyphBlt, - fbPolyGlyphBlt, - fbPushPixels -}; - -Bool -fbCreateGC(GCPtr pGC) -{ - pGC->ops = (GCOps *) &fbGCOps; - pGC->funcs = (GCFuncs *) &fbGCFuncs; - - /* fb wants to translate before scan conversion */ - pGC->miTranslate = 1; - pGC->fExpose = 1; - - fbGetGCPrivate(pGC)->bpp = BitsPerPixel (pGC->depth); - return TRUE; -} - -/* - * Pad pixmap to FB_UNIT bits wide - */ -void -fbPadPixmap (PixmapPtr pPixmap) -{ - int width; - FbBits *bits; - FbBits b; - FbBits mask; - int height; - int w; - int stride; - int bpp; - _X_UNUSED int xOff, yOff; - - fbGetDrawable (&pPixmap->drawable, bits, stride, bpp, xOff, yOff); - - width = pPixmap->drawable.width * pPixmap->drawable.bitsPerPixel; - height = pPixmap->drawable.height; - mask = FbBitsMask (0, width); - while (height--) - { - b = READ(bits) & mask; - w = width; - while (w < FB_UNIT) - { - b = b | FbScrRight(b, w); - w <<= 1; - } - WRITE(bits, b); - bits += stride; - } - - fbFinishAccess (&pPixmap->drawable); -} - -/* - * Verify that 'bits' repeats every 'len' bits - */ -static Bool -fbBitsRepeat (FbBits bits, int len, int width) -{ - FbBits mask = FbBitsMask(0, len); - FbBits orig = bits & mask; - int i; - - if (width > FB_UNIT) - width = FB_UNIT; - for (i = 0; i < width / len; i++) - { - if ((bits & mask) != orig) - return FALSE; - bits = FbScrLeft(bits,len); - } - return TRUE; -} - -/* - * Check whether an entire bitmap line is a repetition of - * the first 'len' bits - */ -static Bool -fbLineRepeat (FbBits *bits, int len, int width) -{ - FbBits first = bits[0]; - - if (!fbBitsRepeat (first, len, width)) - return FALSE; - width = (width + FB_UNIT-1) >> FB_SHIFT; - bits++; - while (--width) - if (READ(bits) != first) - return FALSE; - return TRUE; -} - -/* - * The even stipple code wants the first FB_UNIT/bpp bits on - * each scanline to represent the entire stipple - */ -static Bool -fbCanEvenStipple (PixmapPtr pStipple, int bpp) -{ - int len = FB_UNIT / bpp; - FbBits *bits; - int stride; - int stip_bpp; - _X_UNUSED int stipXoff, stipYoff; - int h; - - /* can't even stipple 24bpp drawables */ - if ((bpp & (bpp-1)) != 0) - return FALSE; - /* make sure the stipple width is a multiple of the even stipple width */ - if (pStipple->drawable.width % len != 0) - return FALSE; - fbGetDrawable (&pStipple->drawable, bits, stride, stip_bpp, stipXoff, stipYoff); - h = pStipple->drawable.height; - /* check to see that the stipple repeats horizontally */ - while (h--) - { - if (!fbLineRepeat (bits, len, pStipple->drawable.width)) { - fbFinishAccess (&pStipple->drawable); - return FALSE; - } - bits += stride; - } - fbFinishAccess (&pStipple->drawable); - return TRUE; -} - -void -fbValidateGC(GCPtr pGC, unsigned long changes, DrawablePtr pDrawable) -{ - FbGCPrivPtr pPriv = fbGetGCPrivate(pGC); - FbBits mask; - - /* - * if the client clip is different or moved OR the subwindowMode has - * changed OR the window's clip has changed since the last validation - * we need to recompute the composite clip - */ - - if ((changes & (GCClipXOrigin|GCClipYOrigin|GCClipMask|GCSubwindowMode)) || - (pDrawable->serialNumber != (pGC->serialNumber & DRAWABLE_SERIAL_BITS)) - ) - { - miComputeCompositeClip (pGC, pDrawable); - } - - if (pPriv->bpp != pDrawable->bitsPerPixel) - { - changes |= GCStipple|GCForeground|GCBackground|GCPlaneMask; - pPriv->bpp = pDrawable->bitsPerPixel; - } - if ((changes & GCTile) && fbGetRotatedPixmap(pGC)) - { - (*pGC->pScreen->DestroyPixmap) (fbGetRotatedPixmap(pGC)); - fbGetRotatedPixmap(pGC) = 0; - } - - if (pGC->fillStyle == FillTiled) - { - PixmapPtr pOldTile, pNewTile; - - pOldTile = pGC->tile.pixmap; - if (pOldTile->drawable.bitsPerPixel != pDrawable->bitsPerPixel) - { - pNewTile = fbGetRotatedPixmap(pGC); - if (!pNewTile || pNewTile ->drawable.bitsPerPixel != pDrawable->bitsPerPixel) - { - if (pNewTile) - (*pGC->pScreen->DestroyPixmap) (pNewTile); - pNewTile = fb24_32ReformatTile (pOldTile, pDrawable->bitsPerPixel); - } - if (pNewTile) - { - fbGetRotatedPixmap(pGC) = pOldTile; - pGC->tile.pixmap = pNewTile; - changes |= GCTile; - } - } - } - if (changes & GCTile) - { - if (!pGC->tileIsPixel && - FbEvenTile (pGC->tile.pixmap->drawable.width * - pDrawable->bitsPerPixel)) - fbPadPixmap (pGC->tile.pixmap); - } - if (changes & GCStipple) - { - pPriv->evenStipple = FALSE; - - if (pGC->stipple) { - - /* can we do an even stipple ?? */ - if (FbEvenStip (pGC->stipple->drawable.width, - pDrawable->bitsPerPixel) && - (fbCanEvenStipple (pGC->stipple, pDrawable->bitsPerPixel))) - pPriv->evenStipple = TRUE; - - if (pGC->stipple->drawable.width * pDrawable->bitsPerPixel < FB_UNIT) - fbPadPixmap (pGC->stipple); - } - } - /* - * Recompute reduced rop values - */ - if (changes & (GCForeground|GCBackground|GCPlaneMask|GCFunction)) - { - int s; - FbBits depthMask; - - mask = FbFullMask(pDrawable->bitsPerPixel); - depthMask = FbFullMask(pDrawable->depth); - - pPriv->fg = pGC->fgPixel & mask; - pPriv->bg = pGC->bgPixel & mask; - - if ((pGC->planemask & depthMask) == depthMask) - pPriv->pm = mask; - else - pPriv->pm = pGC->planemask & mask; - - s = pDrawable->bitsPerPixel; - while (s < FB_UNIT) - { - pPriv->fg |= pPriv->fg << s; - pPriv->bg |= pPriv->bg << s; - pPriv->pm |= pPriv->pm << s; - s <<= 1; - } - pPriv->and = fbAnd(pGC->alu, pPriv->fg, pPriv->pm); - pPriv->xor = fbXor(pGC->alu, pPriv->fg, pPriv->pm); - pPriv->bgand = fbAnd(pGC->alu, pPriv->bg, pPriv->pm); - pPriv->bgxor = fbXor(pGC->alu, pPriv->bg, pPriv->pm); - } - if (changes & GCDashList) - { - unsigned short n = pGC->numInDashList; - unsigned char *dash = pGC->dash; - unsigned int dashLength = 0; - - while (n--) - dashLength += (unsigned int ) *dash++; - pPriv->dashLength = dashLength; - } -} +/*
+ * 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 <stdlib.h>
+
+#include "fb.h"
+
+const GCFuncs fbGCFuncs = {
+ fbValidateGC,
+ miChangeGC,
+ miCopyGC,
+ miDestroyGC,
+ miChangeClip,
+ miDestroyClip,
+ miCopyClip,
+};
+
+const GCOps fbGCOps = {
+ fbFillSpans,
+ fbSetSpans,
+ fbPutImage,
+ fbCopyArea,
+ fbCopyPlane,
+ fbPolyPoint,
+ fbPolyLine,
+ fbPolySegment,
+ fbPolyRectangle,
+ fbPolyArc,
+ miFillPolygon,
+ fbPolyFillRect,
+ fbPolyFillArc,
+ miPolyText8,
+ miPolyText16,
+ miImageText8,
+ miImageText16,
+ fbImageGlyphBlt,
+ fbPolyGlyphBlt,
+ fbPushPixels
+};
+
+Bool
+fbCreateGC(GCPtr pGC)
+{
+ pGC->ops = (GCOps *) &fbGCOps;
+ pGC->funcs = (GCFuncs *) &fbGCFuncs;
+
+ /* fb wants to translate before scan conversion */
+ pGC->miTranslate = 1;
+ pGC->fExpose = 1;
+
+ fbGetGCPrivate(pGC)->bpp = BitsPerPixel (pGC->depth);
+ return TRUE;
+}
+
+/*
+ * Pad pixmap to FB_UNIT bits wide
+ */
+void
+fbPadPixmap (PixmapPtr pPixmap)
+{
+ int width;
+ FbBits *bits;
+ FbBits b;
+ FbBits mask;
+ int height;
+ int w;
+ int stride;
+ int bpp;
+ _X_UNUSED int xOff, yOff;
+
+ fbGetDrawable (&pPixmap->drawable, bits, stride, bpp, xOff, yOff);
+
+ width = pPixmap->drawable.width * pPixmap->drawable.bitsPerPixel;
+ height = pPixmap->drawable.height;
+ mask = FbBitsMask (0, width);
+ while (height--)
+ {
+ b = READ(bits) & mask;
+ w = width;
+ while (w < FB_UNIT)
+ {
+ b = b | FbScrRight(b, w);
+ w <<= 1;
+ }
+ WRITE(bits, b);
+ bits += stride;
+ }
+
+ fbFinishAccess (&pPixmap->drawable);
+}
+
+/*
+ * Verify that 'bits' repeats every 'len' bits
+ */
+static Bool
+fbBitsRepeat (FbBits bits, int len, int width)
+{
+ FbBits mask = FbBitsMask(0, len);
+ FbBits orig = bits & mask;
+ int i;
+
+ if (width > FB_UNIT)
+ width = FB_UNIT;
+ for (i = 0; i < width / len; i++)
+ {
+ if ((bits & mask) != orig)
+ return FALSE;
+ bits = FbScrLeft(bits,len);
+ }
+ return TRUE;
+}
+
+/*
+ * Check whether an entire bitmap line is a repetition of
+ * the first 'len' bits
+ */
+static Bool
+fbLineRepeat (FbBits *bits, int len, int width)
+{
+ FbBits first = bits[0];
+
+ if (!fbBitsRepeat (first, len, width))
+ return FALSE;
+ width = (width + FB_UNIT-1) >> FB_SHIFT;
+ bits++;
+ while (--width)
+ if (READ(bits) != first)
+ return FALSE;
+ return TRUE;
+}
+
+/*
+ * The even stipple code wants the first FB_UNIT/bpp bits on
+ * each scanline to represent the entire stipple
+ */
+static Bool
+fbCanEvenStipple (PixmapPtr pStipple, int bpp)
+{
+ int len = FB_UNIT / bpp;
+ FbBits *bits;
+ int stride;
+ int stip_bpp;
+ _X_UNUSED int stipXoff, stipYoff;
+ int h;
+
+ /* can't even stipple 24bpp drawables */
+ if ((bpp & (bpp-1)) != 0)
+ return FALSE;
+ /* make sure the stipple width is a multiple of the even stipple width */
+ if (pStipple->drawable.width % len != 0)
+ return FALSE;
+ fbGetDrawable (&pStipple->drawable, bits, stride, stip_bpp, stipXoff, stipYoff);
+ h = pStipple->drawable.height;
+ /* check to see that the stipple repeats horizontally */
+ while (h--)
+ {
+ if (!fbLineRepeat (bits, len, pStipple->drawable.width)) {
+ fbFinishAccess (&pStipple->drawable);
+ return FALSE;
+ }
+ bits += stride;
+ }
+ fbFinishAccess (&pStipple->drawable);
+ return TRUE;
+}
+
+void
+fbValidateGC(GCPtr pGC, unsigned long changes, DrawablePtr pDrawable)
+{
+ FbGCPrivPtr pPriv = fbGetGCPrivate(pGC);
+ FbBits mask;
+
+ /*
+ * if the client clip is different or moved OR the subwindowMode has
+ * changed OR the window's clip has changed since the last validation
+ * we need to recompute the composite clip
+ */
+
+ if ((changes & (GCClipXOrigin|GCClipYOrigin|GCClipMask|GCSubwindowMode)) ||
+ (pDrawable->serialNumber != (pGC->serialNumber & DRAWABLE_SERIAL_BITS))
+ )
+ {
+ miComputeCompositeClip (pGC, pDrawable);
+ }
+
+ if (pPriv->bpp != pDrawable->bitsPerPixel)
+ {
+ changes |= GCStipple|GCForeground|GCBackground|GCPlaneMask;
+ pPriv->bpp = pDrawable->bitsPerPixel;
+ }
+ if ((changes & GCTile) && fbGetRotatedPixmap(pGC))
+ {
+ (*pGC->pScreen->DestroyPixmap) (fbGetRotatedPixmap(pGC));
+ fbGetRotatedPixmap(pGC) = 0;
+ }
+
+ if (pGC->fillStyle == FillTiled)
+ {
+ PixmapPtr pOldTile, pNewTile;
+
+ pOldTile = pGC->tile.pixmap;
+ if (pOldTile->drawable.bitsPerPixel != pDrawable->bitsPerPixel)
+ {
+ pNewTile = fbGetRotatedPixmap(pGC);
+ if (!pNewTile || pNewTile ->drawable.bitsPerPixel != pDrawable->bitsPerPixel)
+ {
+ if (pNewTile)
+ (*pGC->pScreen->DestroyPixmap) (pNewTile);
+ pNewTile = fb24_32ReformatTile (pOldTile, pDrawable->bitsPerPixel);
+ }
+ if (pNewTile)
+ {
+ fbGetRotatedPixmap(pGC) = pOldTile;
+ pGC->tile.pixmap = pNewTile;
+ changes |= GCTile;
+ }
+ }
+ }
+ if (changes & GCTile)
+ {
+ if (!pGC->tileIsPixel &&
+ FbEvenTile (pGC->tile.pixmap->drawable.width *
+ pDrawable->bitsPerPixel))
+ fbPadPixmap (pGC->tile.pixmap);
+ }
+ if (changes & GCStipple)
+ {
+ pPriv->evenStipple = FALSE;
+
+ if (pGC->stipple) {
+
+ /* can we do an even stipple ?? */
+ if (FbEvenStip (pGC->stipple->drawable.width,
+ pDrawable->bitsPerPixel) &&
+ (fbCanEvenStipple (pGC->stipple, pDrawable->bitsPerPixel)))
+ pPriv->evenStipple = TRUE;
+
+ if (pGC->stipple->drawable.width * pDrawable->bitsPerPixel < FB_UNIT)
+ fbPadPixmap (pGC->stipple);
+ }
+ }
+ /*
+ * Recompute reduced rop values
+ */
+ if (changes & (GCForeground|GCBackground|GCPlaneMask|GCFunction))
+ {
+ int s;
+ FbBits depthMask;
+
+ mask = FbFullMask(pDrawable->bitsPerPixel);
+ depthMask = FbFullMask(pDrawable->depth);
+
+ pPriv->fg = pGC->fgPixel & mask;
+ pPriv->bg = pGC->bgPixel & mask;
+
+ if ((pGC->planemask & depthMask) == depthMask)
+ pPriv->pm = mask;
+ else
+ pPriv->pm = pGC->planemask & mask;
+
+ s = pDrawable->bitsPerPixel;
+ while (s < FB_UNIT)
+ {
+ pPriv->fg |= pPriv->fg << s;
+ pPriv->bg |= pPriv->bg << s;
+ pPriv->pm |= pPriv->pm << s;
+ s <<= 1;
+ }
+ pPriv->and = fbAnd(pGC->alu, pPriv->fg, pPriv->pm);
+ pPriv->xor = fbXor(pGC->alu, pPriv->fg, pPriv->pm);
+ pPriv->bgand = fbAnd(pGC->alu, pPriv->bg, pPriv->pm);
+ pPriv->bgxor = fbXor(pGC->alu, pPriv->bg, pPriv->pm);
+ }
+ if (changes & GCDashList)
+ {
+ unsigned short n = pGC->numInDashList;
+ unsigned char *dash = pGC->dash;
+ unsigned int dashLength = 0;
+
+ while (n--)
+ dashLength += (unsigned int ) *dash++;
+ pPriv->dashLength = dashLength;
+ }
+}
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