b5b2a0522e
Changed the semantics of the Convolution filter a bit. It now doesn't try
to normalize the filter values but leaves this to the client. This
gives more reasonable behaviour in the limit where the filter
parameters sum up to 0.
626 lines
17 KiB
C
626 lines
17 KiB
C
/*
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* $XFree86: xc/programs/Xserver/render/mipict.c,v 1.15tsi Exp $
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*
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* Copyright © 1999 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "scrnintstr.h"
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#include "gcstruct.h"
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#include "pixmapstr.h"
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#include "windowstr.h"
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#include "mi.h"
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#include "picturestr.h"
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#include "mipict.h"
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#ifndef __GNUC__
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#define __inline
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#endif
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int
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miCreatePicture (PicturePtr pPicture)
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{
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return Success;
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}
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void
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miDestroyPicture (PicturePtr pPicture)
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{
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if (pPicture->freeCompClip)
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REGION_DESTROY(pPicture->pDrawable->pScreen, pPicture->pCompositeClip);
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}
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void
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miDestroyPictureClip (PicturePtr pPicture)
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{
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switch (pPicture->clientClipType) {
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case CT_NONE:
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return;
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case CT_PIXMAP:
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(*pPicture->pDrawable->pScreen->DestroyPixmap) ((PixmapPtr) (pPicture->clientClip));
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break;
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default:
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/*
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* we know we'll never have a list of rectangles, since ChangeClip
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* immediately turns them into a region
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*/
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REGION_DESTROY(pPicture->pDrawable->pScreen, pPicture->clientClip);
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break;
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}
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pPicture->clientClip = NULL;
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pPicture->clientClipType = CT_NONE;
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}
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int
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miChangePictureClip (PicturePtr pPicture,
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int type,
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pointer value,
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int n)
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{
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ScreenPtr pScreen = pPicture->pDrawable->pScreen;
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PictureScreenPtr ps = GetPictureScreen(pScreen);
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pointer clientClip;
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int clientClipType;
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switch (type) {
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case CT_PIXMAP:
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/* convert the pixmap to a region */
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clientClip = (pointer) BITMAP_TO_REGION(pScreen, (PixmapPtr) value);
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if (!clientClip)
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return BadAlloc;
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clientClipType = CT_REGION;
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(*pScreen->DestroyPixmap) ((PixmapPtr) value);
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break;
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case CT_REGION:
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clientClip = value;
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clientClipType = CT_REGION;
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break;
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case CT_NONE:
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clientClip = 0;
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clientClipType = CT_NONE;
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break;
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default:
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clientClip = (pointer) RECTS_TO_REGION(pScreen, n,
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(xRectangle *) value,
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type);
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if (!clientClip)
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return BadAlloc;
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clientClipType = CT_REGION;
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xfree(value);
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break;
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}
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(*ps->DestroyPictureClip) (pPicture);
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pPicture->clientClip = clientClip;
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pPicture->clientClipType = clientClipType;
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pPicture->stateChanges |= CPClipMask;
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return Success;
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}
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void
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miChangePicture (PicturePtr pPicture,
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Mask mask)
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{
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return;
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}
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void
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miValidatePicture (PicturePtr pPicture,
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Mask mask)
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{
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DrawablePtr pDrawable = pPicture->pDrawable;
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ScreenPtr pScreen = pDrawable->pScreen;
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if ((mask & (CPClipXOrigin|CPClipYOrigin|CPClipMask|CPSubwindowMode)) ||
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(pDrawable->serialNumber != (pPicture->serialNumber & DRAWABLE_SERIAL_BITS)))
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{
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if (pDrawable->type == DRAWABLE_WINDOW)
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{
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WindowPtr pWin = (WindowPtr) pDrawable;
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RegionPtr pregWin;
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Bool freeTmpClip, freeCompClip;
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if (pPicture->subWindowMode == IncludeInferiors)
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{
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pregWin = NotClippedByChildren(pWin);
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freeTmpClip = TRUE;
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}
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else
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{
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pregWin = &pWin->clipList;
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freeTmpClip = FALSE;
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}
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freeCompClip = pPicture->freeCompClip;
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/*
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* if there is no client clip, we can get by with just keeping the
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* pointer we got, and remembering whether or not should destroy
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* (or maybe re-use) it later. this way, we avoid unnecessary
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* copying of regions. (this wins especially if many clients clip
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* by children and have no client clip.)
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*/
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if (pPicture->clientClipType == CT_NONE)
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{
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if (freeCompClip)
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REGION_DESTROY(pScreen, pPicture->pCompositeClip);
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pPicture->pCompositeClip = pregWin;
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pPicture->freeCompClip = freeTmpClip;
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}
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else
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{
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/*
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* we need one 'real' region to put into the composite clip. if
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* pregWin the current composite clip are real, we can get rid of
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* one. if pregWin is real and the current composite clip isn't,
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* use pregWin for the composite clip. if the current composite
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* clip is real and pregWin isn't, use the current composite
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* clip. if neither is real, create a new region.
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*/
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REGION_TRANSLATE(pScreen, pPicture->clientClip,
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pDrawable->x + pPicture->clipOrigin.x,
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pDrawable->y + pPicture->clipOrigin.y);
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if (freeCompClip)
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{
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REGION_INTERSECT(pScreen, pPicture->pCompositeClip,
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pregWin, pPicture->clientClip);
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if (freeTmpClip)
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REGION_DESTROY(pScreen, pregWin);
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}
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else if (freeTmpClip)
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{
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REGION_INTERSECT(pScreen, pregWin, pregWin, pPicture->clientClip);
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pPicture->pCompositeClip = pregWin;
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}
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else
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{
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pPicture->pCompositeClip = REGION_CREATE(pScreen, NullBox, 0);
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REGION_INTERSECT(pScreen, pPicture->pCompositeClip,
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pregWin, pPicture->clientClip);
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}
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pPicture->freeCompClip = TRUE;
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REGION_TRANSLATE(pScreen, pPicture->clientClip,
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-(pDrawable->x + pPicture->clipOrigin.x),
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-(pDrawable->y + pPicture->clipOrigin.y));
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}
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} /* end of composite clip for a window */
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else
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{
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BoxRec pixbounds;
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/* XXX should we translate by drawable.x/y here ? */
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/* If you want pixmaps in offscreen memory, yes */
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pixbounds.x1 = pDrawable->x;
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pixbounds.y1 = pDrawable->y;
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pixbounds.x2 = pDrawable->x + pDrawable->width;
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pixbounds.y2 = pDrawable->y + pDrawable->height;
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if (pPicture->freeCompClip)
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{
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REGION_RESET(pScreen, pPicture->pCompositeClip, &pixbounds);
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}
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else
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{
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pPicture->freeCompClip = TRUE;
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pPicture->pCompositeClip = REGION_CREATE(pScreen, &pixbounds, 1);
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}
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if (pPicture->clientClipType == CT_REGION)
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{
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if(pDrawable->x || pDrawable->y) {
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REGION_TRANSLATE(pScreen, pPicture->clientClip,
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pDrawable->x + pPicture->clipOrigin.x,
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pDrawable->y + pPicture->clipOrigin.y);
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REGION_INTERSECT(pScreen, pPicture->pCompositeClip,
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pPicture->pCompositeClip, pPicture->clientClip);
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REGION_TRANSLATE(pScreen, pPicture->clientClip,
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-(pDrawable->x + pPicture->clipOrigin.x),
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-(pDrawable->y + pPicture->clipOrigin.y));
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} else {
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REGION_TRANSLATE(pScreen, pPicture->pCompositeClip,
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-pPicture->clipOrigin.x, -pPicture->clipOrigin.y);
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REGION_INTERSECT(pScreen, pPicture->pCompositeClip,
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pPicture->pCompositeClip, pPicture->clientClip);
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REGION_TRANSLATE(pScreen, pPicture->pCompositeClip,
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pPicture->clipOrigin.x, pPicture->clipOrigin.y);
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}
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}
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} /* end of composite clip for pixmap */
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}
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}
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#define BOUND(v) (INT16) ((v) < MINSHORT ? MINSHORT : (v) > MAXSHORT ? MAXSHORT : (v))
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static __inline Bool
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miClipPictureReg (RegionPtr pRegion,
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RegionPtr pClip,
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int dx,
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int dy)
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{
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if (REGION_NUM_RECTS(pRegion) == 1 &&
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REGION_NUM_RECTS(pClip) == 1)
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{
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BoxPtr pRbox = REGION_RECTS(pRegion);
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BoxPtr pCbox = REGION_RECTS(pClip);
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int v;
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if (pRbox->x1 < (v = pCbox->x1 + dx))
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pRbox->x1 = BOUND(v);
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if (pRbox->x2 > (v = pCbox->x2 + dx))
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pRbox->x2 = BOUND(v);
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if (pRbox->y1 < (v = pCbox->y1 + dy))
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pRbox->y1 = BOUND(v);
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if (pRbox->y2 > (v = pCbox->y2 + dy))
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pRbox->y2 = BOUND(v);
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if (pRbox->x1 >= pRbox->x2 ||
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pRbox->y1 >= pRbox->y2)
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{
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REGION_EMPTY(pScreen, pRegion);
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}
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}
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else if (!REGION_NOTEMPTY (pScreen, pClip))
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return FALSE;
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else
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{
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if (dx || dy)
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REGION_TRANSLATE(pScreen, pRegion, -dx, -dy);
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if (!REGION_INTERSECT (pScreen, pRegion, pRegion, pClip))
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return FALSE;
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if (dx || dy)
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REGION_TRANSLATE(pScreen, pRegion, dx, dy);
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}
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return REGION_NOTEMPTY(pScreen, pRegion);
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}
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static __inline Bool
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miClipPictureSrc (RegionPtr pRegion,
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PicturePtr pPicture,
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int dx,
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int dy)
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{
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/* XXX what to do with clipping from transformed pictures? */
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if (pPicture->transform || !pPicture->pDrawable)
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return TRUE;
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if (pPicture->repeat)
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{
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if (pPicture->clientClipType != CT_NONE)
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{
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REGION_TRANSLATE(pScreen, pRegion,
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dx - pPicture->clipOrigin.x,
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dy - pPicture->clipOrigin.y);
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if (!REGION_INTERSECT (pScreen, pRegion, pRegion,
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(RegionPtr) pPicture->clientClip))
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return FALSE;
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REGION_TRANSLATE(pScreen, pRegion,
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- (dx - pPicture->clipOrigin.x),
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- (dy - pPicture->clipOrigin.y));
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}
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return TRUE;
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}
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else
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{
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return miClipPictureReg (pRegion,
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pPicture->pCompositeClip,
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dx,
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dy);
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}
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}
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static void
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miCompositeSourceValidate (PicturePtr pPicture,
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INT16 x,
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INT16 y,
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CARD16 width,
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CARD16 height)
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{
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DrawablePtr pDrawable = pPicture->pDrawable;
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ScreenPtr pScreen;
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if (!pDrawable)
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return;
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pScreen = pDrawable->pScreen;
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if (pScreen->SourceValidate)
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{
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x -= pPicture->pDrawable->x;
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y -= pPicture->pDrawable->y;
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if (pPicture->transform)
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{
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xPoint points[4];
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int i;
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int xmin, ymin, xmax, ymax;
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#define VectorSet(i,_x,_y) { points[i].x = _x; points[i].y = _y; }
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VectorSet (0, x, y);
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VectorSet (1, x + width, y);
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VectorSet (2, x, y + height);
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VectorSet (3, x + width, y + height);
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xmin = ymin = 32767;
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xmax = ymax = -32737;
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for (i = 0; i < 4; i++)
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{
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PictVector t;
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t.vector[0] = IntToxFixed (points[i].x);
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t.vector[1] = IntToxFixed (points[i].y);
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t.vector[2] = xFixed1;
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if (PictureTransformPoint (pPicture->transform, &t))
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{
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int tx = xFixedToInt (t.vector[0]);
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int ty = xFixedToInt (t.vector[1]);
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if (tx < xmin) xmin = tx;
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if (tx > xmax) xmax = tx;
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if (ty < ymin) ymin = ty;
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if (ty > ymax) ymax = ty;
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}
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}
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x = xmin;
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y = ymin;
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width = xmax - xmin;
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height = ymax - ymin;
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}
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(*pScreen->SourceValidate) (pDrawable, x, y, width, height);
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}
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}
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/*
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* returns FALSE if the final region is empty. Indistinguishable from
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* an allocation failure, but rendering ignores those anyways.
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*/
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Bool
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miComputeCompositeRegion (RegionPtr pRegion,
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PicturePtr pSrc,
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PicturePtr pMask,
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PicturePtr pDst,
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INT16 xSrc,
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INT16 ySrc,
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INT16 xMask,
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INT16 yMask,
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INT16 xDst,
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INT16 yDst,
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CARD16 width,
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CARD16 height)
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{
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int v;
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pRegion->extents.x1 = xDst;
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v = xDst + width;
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pRegion->extents.x2 = BOUND(v);
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pRegion->extents.y1 = yDst;
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v = yDst + height;
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pRegion->extents.y2 = BOUND(v);
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pRegion->data = 0;
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/* Check for empty operation */
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if (pRegion->extents.x1 >= pRegion->extents.x2 ||
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pRegion->extents.y1 >= pRegion->extents.y2)
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{
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REGION_EMPTY (pDst->pDrawable->pScreen, pRegion);
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return FALSE;
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}
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/* clip against dst */
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if (!miClipPictureReg (pRegion, pDst->pCompositeClip, 0, 0))
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{
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REGION_UNINIT (pScreen, pRegion);
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return FALSE;
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}
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if (pDst->alphaMap)
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{
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if (!miClipPictureReg (pRegion, pDst->alphaMap->pCompositeClip,
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-pDst->alphaOrigin.x,
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-pDst->alphaOrigin.y))
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{
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REGION_UNINIT (pScreen, pRegion);
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return FALSE;
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}
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}
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/* clip against src */
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if (!miClipPictureSrc (pRegion, pSrc, xDst - xSrc, yDst - ySrc))
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{
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REGION_UNINIT (pScreen, pRegion);
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return FALSE;
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}
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if (pSrc->alphaMap)
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{
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if (!miClipPictureSrc (pRegion, pSrc->alphaMap,
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xDst - (xSrc + pSrc->alphaOrigin.x),
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yDst - (ySrc + pSrc->alphaOrigin.y)))
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{
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REGION_UNINIT (pScreen, pRegion);
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return FALSE;
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}
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}
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/* clip against mask */
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if (pMask)
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{
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if (!miClipPictureSrc (pRegion, pMask, xDst - xMask, yDst - yMask))
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{
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REGION_UNINIT (pScreen, pRegion);
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return FALSE;
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}
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if (pMask->alphaMap)
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{
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if (!miClipPictureSrc (pRegion, pMask->alphaMap,
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xDst - (xMask + pMask->alphaOrigin.x),
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yDst - (yMask + pMask->alphaOrigin.y)))
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{
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REGION_UNINIT (pScreen, pRegion);
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return FALSE;
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}
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}
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}
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miCompositeSourceValidate (pSrc, xSrc, ySrc, width, height);
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if (pMask)
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miCompositeSourceValidate (pMask, xMask, yMask, width, height);
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return TRUE;
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}
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void
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miRenderColorToPixel (PictFormatPtr format,
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xRenderColor *color,
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CARD32 *pixel)
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{
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CARD32 r, g, b, a;
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miIndexedPtr pIndexed;
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switch (format->type) {
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case PictTypeDirect:
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r = color->red >> (16 - Ones (format->direct.redMask));
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g = color->green >> (16 - Ones (format->direct.greenMask));
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b = color->blue >> (16 - Ones (format->direct.blueMask));
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a = color->alpha >> (16 - Ones (format->direct.alphaMask));
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r = r << format->direct.red;
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g = g << format->direct.green;
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b = b << format->direct.blue;
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a = a << format->direct.alpha;
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*pixel = r|g|b|a;
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break;
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case PictTypeIndexed:
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pIndexed = (miIndexedPtr) (format->index.devPrivate);
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if (pIndexed->color)
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{
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r = color->red >> 11;
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g = color->green >> 11;
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b = color->blue >> 11;
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*pixel = miIndexToEnt15 (pIndexed, (r << 10) | (g << 5) | b);
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}
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else
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{
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r = color->red >> 8;
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g = color->green >> 8;
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b = color->blue >> 8;
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*pixel = miIndexToEntY24 (pIndexed, (r << 16) | (g << 8) | b);
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}
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break;
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}
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}
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static CARD16
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miFillColor (CARD32 pixel, int bits)
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{
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while (bits < 16)
|
|
{
|
|
pixel |= pixel << bits;
|
|
bits <<= 1;
|
|
}
|
|
return (CARD16) pixel;
|
|
}
|
|
|
|
Bool
|
|
miIsSolidAlpha (PicturePtr pSrc)
|
|
{
|
|
ScreenPtr pScreen;
|
|
char line[1];
|
|
|
|
if (!pSrc->pDrawable)
|
|
return FALSE;
|
|
|
|
pScreen = pSrc->pDrawable->pScreen;
|
|
|
|
/* Alpha-only */
|
|
if (PICT_FORMAT_TYPE (pSrc->format) != PICT_TYPE_A)
|
|
return FALSE;
|
|
/* repeat */
|
|
if (!pSrc->repeat)
|
|
return FALSE;
|
|
/* 1x1 */
|
|
if (pSrc->pDrawable->width != 1 || pSrc->pDrawable->height != 1)
|
|
return FALSE;
|
|
line[0] = 1;
|
|
(*pScreen->GetImage) (pSrc->pDrawable, 0, 0, 1, 1, ZPixmap, ~0L, line);
|
|
switch (pSrc->pDrawable->bitsPerPixel) {
|
|
case 1:
|
|
return (CARD8) line[0] == 1 || (CARD8) line[0] == 0x80;
|
|
case 4:
|
|
return (CARD8) line[0] == 0xf || (CARD8) line[0] == 0xf0;
|
|
case 8:
|
|
return (CARD8) line[0] == 0xff;
|
|
default:
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
void
|
|
miRenderPixelToColor (PictFormatPtr format,
|
|
CARD32 pixel,
|
|
xRenderColor *color)
|
|
{
|
|
CARD32 r, g, b, a;
|
|
miIndexedPtr pIndexed;
|
|
|
|
switch (format->type) {
|
|
case PictTypeDirect:
|
|
r = (pixel >> format->direct.red) & format->direct.redMask;
|
|
g = (pixel >> format->direct.green) & format->direct.greenMask;
|
|
b = (pixel >> format->direct.blue) & format->direct.blueMask;
|
|
a = (pixel >> format->direct.alpha) & format->direct.alphaMask;
|
|
color->red = miFillColor (r, Ones (format->direct.redMask));
|
|
color->green = miFillColor (g, Ones (format->direct.greenMask));
|
|
color->blue = miFillColor (b, Ones (format->direct.blueMask));
|
|
color->alpha = miFillColor (a, Ones (format->direct.alphaMask));
|
|
break;
|
|
case PictTypeIndexed:
|
|
pIndexed = (miIndexedPtr) (format->index.devPrivate);
|
|
pixel = pIndexed->rgba[pixel & (MI_MAX_INDEXED-1)];
|
|
r = (pixel >> 16) & 0xff;
|
|
g = (pixel >> 8) & 0xff;
|
|
b = (pixel ) & 0xff;
|
|
color->red = miFillColor (r, 8);
|
|
color->green = miFillColor (g, 8);
|
|
color->blue = miFillColor (b, 8);
|
|
color->alpha = 0xffff;
|
|
break;
|
|
}
|
|
}
|
|
|
|
Bool
|
|
miPictureInit (ScreenPtr pScreen, PictFormatPtr formats, int nformats)
|
|
{
|
|
PictureScreenPtr ps;
|
|
|
|
if (!PictureInit (pScreen, formats, nformats))
|
|
return FALSE;
|
|
ps = GetPictureScreen(pScreen);
|
|
ps->CreatePicture = miCreatePicture;
|
|
ps->DestroyPicture = miDestroyPicture;
|
|
ps->ChangePictureClip = miChangePictureClip;
|
|
ps->DestroyPictureClip = miDestroyPictureClip;
|
|
ps->ChangePicture = miChangePicture;
|
|
ps->ValidatePicture = miValidatePicture;
|
|
ps->InitIndexed = miInitIndexed;
|
|
ps->CloseIndexed = miCloseIndexed;
|
|
ps->UpdateIndexed = miUpdateIndexed;
|
|
|
|
/* MI rendering routines */
|
|
ps->Composite = 0; /* requires DDX support */
|
|
ps->Glyphs = miGlyphs;
|
|
ps->CompositeRects = miCompositeRects;
|
|
ps->Trapezoids = miTrapezoids;
|
|
ps->Triangles = miTriangles;
|
|
ps->TriStrip = miTriStrip;
|
|
ps->TriFan = miTriFan;
|
|
|
|
ps->RasterizeTrapezoid = 0; /* requires DDX support */
|
|
ps->AddTraps = 0; /* requires DDX support */
|
|
ps->AddTriangles = 0; /* requires DDX support */
|
|
|
|
return TRUE;
|
|
}
|