610 lines
19 KiB
C
610 lines
19 KiB
C
/*
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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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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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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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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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RegionDestroy(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->
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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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RegionDestroy(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, int type, pointer value, 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) BitmapToRegion(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) RegionFromRects(n, (xRectangle *) value, type);
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if (!clientClip)
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return BadAlloc;
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clientClipType = CT_REGION;
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free(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, 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, Mask mask)
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{
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DrawablePtr pDrawable = pPicture->pDrawable;
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if ((mask & (CPClipXOrigin | CPClipYOrigin | CPClipMask | CPSubwindowMode))
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|| (pDrawable->serialNumber !=
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(pPicture->serialNumber & DRAWABLE_SERIAL_BITS))) {
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if (pDrawable->type == DRAWABLE_WINDOW) {
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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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pregWin = NotClippedByChildren(pWin);
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freeTmpClip = TRUE;
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}
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else {
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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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if (freeCompClip)
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RegionDestroy(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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* 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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RegionTranslate(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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RegionIntersect(pPicture->pCompositeClip,
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pregWin, pPicture->clientClip);
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if (freeTmpClip)
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RegionDestroy(pregWin);
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}
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else if (freeTmpClip) {
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RegionIntersect(pregWin, pregWin, pPicture->clientClip);
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pPicture->pCompositeClip = pregWin;
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}
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else {
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pPicture->pCompositeClip = RegionCreate(NullBox, 0);
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RegionIntersect(pPicture->pCompositeClip,
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pregWin, pPicture->clientClip);
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}
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pPicture->freeCompClip = TRUE;
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RegionTranslate(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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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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RegionReset(pPicture->pCompositeClip, &pixbounds);
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}
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else {
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pPicture->freeCompClip = TRUE;
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pPicture->pCompositeClip = RegionCreate(&pixbounds, 1);
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}
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if (pPicture->clientClipType == CT_REGION) {
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if (pDrawable->x || pDrawable->y) {
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RegionTranslate(pPicture->clientClip,
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pDrawable->x + pPicture->clipOrigin.x,
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pDrawable->y + pPicture->clipOrigin.y);
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RegionIntersect(pPicture->pCompositeClip,
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pPicture->pCompositeClip,
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pPicture->clientClip);
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RegionTranslate(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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else {
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RegionTranslate(pPicture->pCompositeClip,
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-pPicture->clipOrigin.x,
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-pPicture->clipOrigin.y);
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RegionIntersect(pPicture->pCompositeClip,
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pPicture->pCompositeClip,
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pPicture->clientClip);
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RegionTranslate(pPicture->pCompositeClip,
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pPicture->clipOrigin.x,
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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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int
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miChangePictureTransform(PicturePtr pPicture, PictTransform * transform)
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{
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return Success;
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}
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int
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miChangePictureFilter(PicturePtr pPicture,
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int filter, xFixed * params, int nparams)
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{
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return Success;
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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 pixman_bool_t
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miClipPictureReg(pixman_region16_t * pRegion,
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pixman_region16_t * pClip, int dx, int dy)
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{
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if (pixman_region_n_rects(pRegion) == 1 &&
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pixman_region_n_rects(pClip) == 1) {
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pixman_box16_t *pRbox = pixman_region_rectangles(pRegion, NULL);
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pixman_box16_t *pCbox = pixman_region_rectangles(pClip, NULL);
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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 || pRbox->y1 >= pRbox->y2) {
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pixman_region_init(pRegion);
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}
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}
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else if (!pixman_region_not_empty(pClip))
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return FALSE;
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else {
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if (dx || dy)
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pixman_region_translate(pRegion, -dx, -dy);
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if (!pixman_region_intersect(pRegion, pRegion, pClip))
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return FALSE;
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if (dx || dy)
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pixman_region_translate(pRegion, dx, dy);
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}
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return pixman_region_not_empty(pRegion);
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}
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static inline Bool
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miClipPictureSrc(RegionPtr pRegion, PicturePtr pPicture, int dx, int dy)
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{
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if (pPicture->clientClipType != CT_NONE) {
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Bool result;
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pixman_region_translate(pPicture->clientClip,
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pPicture->clipOrigin.x + dx,
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pPicture->clipOrigin.y + dy);
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result = RegionIntersect(pRegion, pRegion, pPicture->clientClip);
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pixman_region_translate(pPicture->clientClip,
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-(pPicture->clipOrigin.x + dx),
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-(pPicture->clipOrigin.y + dy));
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if (!result)
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return FALSE;
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}
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return TRUE;
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}
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static void
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SourceValidateOnePicture(PicturePtr pPicture)
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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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pScreen->SourceValidate(pDrawable, 0, 0, pDrawable->width,
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pDrawable->height, pPicture->subWindowMode);
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}
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}
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void
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miCompositeSourceValidate(PicturePtr pPicture)
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{
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SourceValidateOnePicture(pPicture);
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if (pPicture->alphaMap)
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SourceValidateOnePicture(pPicture->alphaMap);
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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, INT16 yDst, CARD16 width, 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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pixman_region_init(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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pixman_region_fini(pRegion);
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return FALSE;
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}
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if (pDst->alphaMap) {
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if (!miClipPictureReg(pRegion, pDst->alphaMap->pCompositeClip,
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-pDst->alphaOrigin.x, -pDst->alphaOrigin.y)) {
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pixman_region_fini(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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pixman_region_fini(pRegion);
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return FALSE;
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}
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if (pSrc->alphaMap) {
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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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pixman_region_fini(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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if (!miClipPictureSrc(pRegion, pMask, xDst - xMask, yDst - yMask)) {
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pixman_region_fini(pRegion);
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return FALSE;
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}
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if (pMask->alphaMap) {
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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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pixman_region_fini(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);
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if (pMask)
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miCompositeSourceValidate(pMask);
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return TRUE;
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}
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void
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miRenderColorToPixel(PictFormatPtr format, xRenderColor * color, 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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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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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) {
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pixel |= pixel << bits;
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bits <<= 1;
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}
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return (CARD16) pixel;
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}
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Bool
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miIsSolidAlpha(PicturePtr pSrc)
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{
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ScreenPtr pScreen;
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char line[1];
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if (!pSrc->pDrawable)
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return FALSE;
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pScreen = pSrc->pDrawable->pScreen;
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/* Alpha-only */
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if (PICT_FORMAT_TYPE(pSrc->format) != PICT_TYPE_A)
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return FALSE;
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/* repeat */
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if (!pSrc->repeat)
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return FALSE;
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/* 1x1 */
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if (pSrc->pDrawable->width != 1 || pSrc->pDrawable->height != 1)
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return FALSE;
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line[0] = 1;
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(*pScreen->GetImage) (pSrc->pDrawable, 0, 0, 1, 1, ZPixmap, ~0L, line);
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switch (pSrc->pDrawable->bitsPerPixel) {
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case 1:
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return (CARD8) line[0] == 1 || (CARD8) line[0] == 0x80;
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case 4:
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return (CARD8) line[0] == 0xf || (CARD8) line[0] == 0xf0;
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case 8:
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return (CARD8) line[0] == 0xff;
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default:
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return FALSE;
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}
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}
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void
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miRenderPixelToColor(PictFormatPtr format, CARD32 pixel, xRenderColor * color)
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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 = (pixel >> format->direct.red) & format->direct.redMask;
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g = (pixel >> format->direct.green) & format->direct.greenMask;
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b = (pixel >> format->direct.blue) & format->direct.blueMask;
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a = (pixel >> format->direct.alpha) & format->direct.alphaMask;
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color->red = miFillColor(r, Ones(format->direct.redMask));
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color->green = miFillColor(g, Ones(format->direct.greenMask));
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color->blue = miFillColor(b, Ones(format->direct.blueMask));
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color->alpha = miFillColor(a, Ones(format->direct.alphaMask));
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break;
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case PictTypeIndexed:
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pIndexed = (miIndexedPtr) (format->index.devPrivate);
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pixel = pIndexed->rgba[pixel & (MI_MAX_INDEXED - 1)];
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r = (pixel >> 16) & 0xff;
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g = (pixel >> 8) & 0xff;
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b = (pixel) & 0xff;
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color->red = miFillColor(r, 8);
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color->green = miFillColor(g, 8);
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color->blue = miFillColor(b, 8);
|
|
color->alpha = 0xffff;
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
miTriStrip(CARD8 op,
|
|
PicturePtr pSrc,
|
|
PicturePtr pDst,
|
|
PictFormatPtr maskFormat,
|
|
INT16 xSrc, INT16 ySrc, int npoints, xPointFixed * points)
|
|
{
|
|
xTriangle *tris, *tri;
|
|
int ntri;
|
|
|
|
ntri = npoints - 2;
|
|
tris = malloc(ntri * sizeof(xTriangle));
|
|
if (!tris)
|
|
return;
|
|
|
|
for (tri = tris; npoints >= 3; npoints--, points++, tri++) {
|
|
tri->p1 = points[0];
|
|
tri->p2 = points[1];
|
|
tri->p3 = points[2];
|
|
}
|
|
CompositeTriangles(op, pSrc, pDst, maskFormat, xSrc, ySrc, ntri, tris);
|
|
free(tris);
|
|
}
|
|
|
|
void
|
|
miTriFan(CARD8 op,
|
|
PicturePtr pSrc,
|
|
PicturePtr pDst,
|
|
PictFormatPtr maskFormat,
|
|
INT16 xSrc, INT16 ySrc, int npoints, xPointFixed * points)
|
|
{
|
|
xTriangle *tris, *tri;
|
|
xPointFixed *first;
|
|
int ntri;
|
|
|
|
ntri = npoints - 2;
|
|
tris = malloc(ntri * sizeof(xTriangle));
|
|
if (!tris)
|
|
return;
|
|
|
|
first = points++;
|
|
for (tri = tris; npoints >= 3; npoints--, points++, tri++) {
|
|
tri->p1 = *first;
|
|
tri->p2 = points[0];
|
|
tri->p3 = points[1];
|
|
}
|
|
CompositeTriangles(op, pSrc, pDst, maskFormat, xSrc, ySrc, ntri, tris);
|
|
free(tris);
|
|
}
|
|
|
|
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;
|
|
ps->ChangePictureTransform = miChangePictureTransform;
|
|
ps->ChangePictureFilter = miChangePictureFilter;
|
|
ps->RealizeGlyph = miRealizeGlyph;
|
|
ps->UnrealizeGlyph = miUnrealizeGlyph;
|
|
|
|
/* MI rendering routines */
|
|
ps->Composite = 0; /* requires DDX support */
|
|
ps->Glyphs = miGlyphs;
|
|
ps->CompositeRects = miCompositeRects;
|
|
ps->Trapezoids = 0;
|
|
ps->Triangles = 0;
|
|
|
|
ps->RasterizeTrapezoid = 0; /* requires DDX support */
|
|
ps->AddTraps = 0; /* requires DDX support */
|
|
ps->AddTriangles = 0; /* requires DDX support */
|
|
|
|
ps->TriStrip = miTriStrip; /* converts call to CompositeTriangles */
|
|
ps->TriFan = miTriFan;
|
|
|
|
return TRUE;
|
|
}
|