63215a6123
bernd@ and oga@. Tested by many in snaphots.
174 lines
4.8 KiB
C
174 lines
4.8 KiB
C
/*****************************************************************************
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* driDrawable.c: Lean Version of DRI utilities.
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*
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* Copyright (c) 2005 Thomas Hellstrom. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHOR(S) OR COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <X11/Xlibint.h>
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#include <X11/Xutil.h>
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#include "xf86drm.h"
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#include "drm.h"
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#include "xf86dri.h"
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#include "drm_sarea.h"
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#include "driDrawable.h"
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static unsigned
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drawStamp(volatile drm_sarea_t * pSarea, int index)
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{
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return pSarea->drawableTable[index].stamp;
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}
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int
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getDRIDrawableInfoLocked(void *drawHash, Display * display, int screen,
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Drawable draw, unsigned lockFlags, int drmFD, drm_context_t drmContext,
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drmAddress sarea, Bool updateInfo, drawableInfo ** info,
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unsigned long infoSize)
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{
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drawableInfo *drawInfo;
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void *res;
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drm_drawable_t drmDraw = 0;
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volatile drm_sarea_t *pSarea = (drm_sarea_t *) sarea;
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drm_clip_rect_t *clipFront, *clipBack;
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int ret;
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if (drmHashLookup(drawHash, (unsigned long)draw, &res)) {
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/*
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* The drawable is unknown to us. Create it and put it in the
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* hash table.
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*/
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DRM_UNLOCK(drmFD, &pSarea->lock, drmContext);
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if (!uniDRICreateDrawable(display, screen, draw, &drmDraw)) {
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DRM_LOCK(drmFD, &pSarea->lock, drmContext, lockFlags);
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return 1;
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}
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DRM_LOCK(drmFD, &pSarea->lock, drmContext, lockFlags);
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drawInfo = (drawableInfo *) malloc(infoSize);
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if (!drawInfo)
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return 1;
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drawInfo->drmDraw = drmDraw;
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drawInfo->stamp = 0;
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drawInfo->clipFront = 0;
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drawInfo->clipBack = 0;
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drmHashInsert(drawHash, (unsigned long)draw, drawInfo);
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} else {
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drawInfo = res;
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}
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drawInfo->touched = FALSE;
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while (!drawInfo->clipFront
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|| drawInfo->stamp != drawStamp(pSarea, drawInfo->index)) {
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/*
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* The drawable has been touched since we last got info about it.
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* obtain new info from the X server.
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*/
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drawInfo->touched = TRUE;
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if (updateInfo || !drawInfo->clipFront) {
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DRM_UNLOCK(drmFD, &pSarea->lock, drmContext);
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ret = uniDRIGetDrawableInfo(display, screen, draw,
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&drawInfo->index, &drawInfo->stamp, &drawInfo->x,
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&drawInfo->y, &drawInfo->w, &drawInfo->h,
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&drawInfo->numClipFront, &clipFront,
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&drawInfo->backX, &drawInfo->backY,
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&drawInfo->numClipBack, &clipBack);
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DRM_LIGHT_LOCK(drmFD, &pSarea->lock, drmContext);
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/*
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* Error. Probably the drawable is destroyed. Return error and old values.
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*/
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if (!ret) {
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free(drawInfo);
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drawInfo = NULL;
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drmHashDelete(drawHash, (unsigned long)draw);
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DRM_UNLOCK(drmFD, &pSarea->lock, drmContext);
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uniDRIDestroyDrawable(display, screen, draw);
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DRM_LOCK(drmFD, &pSarea->lock, drmContext, lockFlags);
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return 1;
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}
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if (drawInfo->stamp != drawStamp(pSarea, drawInfo->index)) {
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/*
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* The info is already outdated. Sigh. Have another go.
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*/
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XFree(clipFront);
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XFree(clipBack);
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continue;
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}
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if (drawInfo->clipFront)
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XFree(drawInfo->clipFront);
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drawInfo->clipFront = clipFront;
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if (drawInfo->clipBack)
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XFree(drawInfo->clipBack);
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drawInfo->clipBack = clipBack;
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} else {
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if (!drawInfo->clipFront)
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drawInfo->clipFront = (drm_clip_rect_t *) ~ 0UL;
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drawInfo->stamp = drawStamp(pSarea, drawInfo->index);
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}
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}
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*info = drawInfo;
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return 0;
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}
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void
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driDestroyHashContents(void *drawHash)
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{
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unsigned long key;
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void *content;
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drawableInfo *drawInfo;
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if (drmHashFirst(drawHash, &key, &content) < 1)
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return;
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drawInfo = (drawableInfo *) content;
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if (drawInfo->clipBack)
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XFree(drawInfo->clipBack);
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if (drawInfo->clipFront)
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XFree(drawInfo->clipFront);
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free(drawInfo);
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while (drmHashNext(drawHash, &key, &content) == 1) {
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drawInfo = (drawableInfo *) content;
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if (drawInfo->clipBack)
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XFree(drawInfo->clipBack);
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if (drawInfo->clipFront)
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XFree(drawInfo->clipFront);
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free(drawInfo);
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}
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return;
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}
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