e4d11e58ce
This was an attempt to avoid scratch gc creation and validation for paintwin because that was expensive. This is not the case in current servers, and the danger of failure to implement it correctly (as seen in all previous implementations) is high enough to justify removing it. No performance difference detected with x11perf -create -move -resize -circulate on Xvfb. Leave the screen hooks for PaintWindow* in for now to avoid ABI change.
550 lines
14 KiB
C
550 lines
14 KiB
C
/*
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* Copyright © 2004 Eric Anholt
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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 Eric Anholt 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. Eric Anholt 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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* ERIC ANHOLT 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 ERIC ANHOLT 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 <string.h>
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#include "gcstruct.h"
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#include "windowstr.h"
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#include "cw.h"
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#define CW_DEBUG 1
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#if CW_DEBUG
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#define CW_ASSERT(x) do { \
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if (!(x)) { \
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ErrorF("composite wrapper: assertion failed at %s:%d\n", __FUNC__, \
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__LINE__); \
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} \
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} while (0)
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#else
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#define CW_ASSERT(x) do {} while (0)
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#endif
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int cwGCIndex;
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int cwScreenIndex;
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int cwWindowIndex;
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#ifdef RENDER
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int cwPictureIndex;
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#endif
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static unsigned long cwGeneration = 0;
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extern GCOps cwGCOps;
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static Bool
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cwCloseScreen (int i, ScreenPtr pScreen);
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static void
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cwValidateGC(GCPtr pGC, unsigned long stateChanges, DrawablePtr pDrawable);
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static void
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cwChangeGC(GCPtr pGC, unsigned long mask);
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static void
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cwCopyGC(GCPtr pGCSrc, unsigned long mask, GCPtr pGCDst);
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static void
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cwDestroyGC(GCPtr pGC);
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static void
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cwChangeClip(GCPtr pGC, int type, pointer pvalue, int nrects);
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static void
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cwCopyClip(GCPtr pgcDst, GCPtr pgcSrc);
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static void
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cwDestroyClip(GCPtr pGC);
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GCFuncs cwGCFuncs = {
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cwValidateGC,
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cwChangeGC,
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cwCopyGC,
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cwDestroyGC,
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cwChangeClip,
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cwDestroyClip,
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cwCopyClip,
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};
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/* Find the real drawable to draw to, and provide offsets that will translate
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* window coordinates to backing pixmap coordinates.
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*/
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DrawablePtr
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cwGetBackingDrawable(DrawablePtr pDrawable, int *x_off, int *y_off)
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{
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PixmapPtr pPixmap;
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if (pDrawable->type == DRAWABLE_WINDOW &&
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(pPixmap = getCwPixmap ((WindowPtr) pDrawable)))
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{
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*x_off = pDrawable->x - pPixmap->screen_x;
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*y_off = pDrawable->y - pPixmap->screen_y;
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return &pPixmap->drawable;
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} else {
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*x_off = *y_off = 0;
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return pDrawable;
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}
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}
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#define FUNC_PROLOGUE(pGC, pPriv) do { \
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(pGC)->funcs = (pPriv)->wrapFuncs; \
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(pGC)->ops = (pPriv)->wrapOps; \
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} while (0)
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#define FUNC_EPILOGUE(pGC, pPriv) do { \
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(pPriv)->wrapFuncs = (pGC)->funcs; \
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(pPriv)->wrapOps = (pGC)->ops; \
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(pGC)->funcs = &cwGCFuncs; \
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(pGC)->ops = &cwGCOps; \
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} while (0)
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static Bool
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cwCreateBackingGC(GCPtr pGC, DrawablePtr pDrawable)
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{
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cwGCRec *pPriv = getCwGC(pGC);
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int status, x_off, y_off;
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XID noexpose = xFalse;
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DrawablePtr pBackingDrawable;
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pBackingDrawable = cwGetBackingDrawable(pDrawable, &x_off, &y_off);
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pPriv->pBackingGC = CreateGC(pBackingDrawable, GCGraphicsExposures,
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&noexpose, &status);
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if (status != Success)
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return FALSE;
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pPriv->serialNumber = 0;
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pPriv->stateChanges = (1 << (GCLastBit + 1)) - 1;
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return TRUE;
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}
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static void
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cwDestroyBackingGC(GCPtr pGC)
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{
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cwGCPtr pPriv;
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pPriv = (cwGCPtr) getCwGC (pGC);
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if (pPriv->pBackingGC) {
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FreeGC(pPriv->pBackingGC, (XID)0);
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pPriv->pBackingGC = NULL;
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}
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}
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static void
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cwValidateGC(GCPtr pGC, unsigned long stateChanges, DrawablePtr pDrawable)
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{
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GCPtr pBackingGC;
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cwGCPtr pPriv;
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DrawablePtr pBackingDrawable;
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int x_off, y_off;
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pPriv = (cwGCPtr) getCwGC (pGC);
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FUNC_PROLOGUE(pGC, pPriv);
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/*
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* Must call ValidateGC to ensure pGC->pCompositeClip is valid
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*/
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(*pGC->funcs->ValidateGC)(pGC, stateChanges, pDrawable);
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if (!cwDrawableIsRedirWindow(pDrawable)) {
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cwDestroyBackingGC(pGC);
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FUNC_EPILOGUE(pGC, pPriv);
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return;
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} else {
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if (!pPriv->pBackingGC && !cwCreateBackingGC(pGC, pDrawable)) {
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FUNC_EPILOGUE(pGC, pPriv);
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return;
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}
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}
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pBackingGC = pPriv->pBackingGC;
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pBackingDrawable = cwGetBackingDrawable(pDrawable, &x_off, &y_off);
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pPriv->stateChanges |= stateChanges;
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/*
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* Copy the composite clip into the backing GC if either
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* the drawable clip list has changed or the client has changed
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* the client clip data
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*/
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if (pDrawable->serialNumber != pPriv->serialNumber ||
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(pPriv->stateChanges & (GCClipXOrigin|GCClipYOrigin|GCClipMask)))
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{
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XID vals[2];
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RegionPtr pCompositeClip;
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pCompositeClip = REGION_CREATE (pScreen, NULL, 0);
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REGION_COPY (pScreen, pCompositeClip, pGC->pCompositeClip);
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/* Either the drawable has changed, or the clip list in the drawable has
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* changed. Copy the new clip list over and set the new translated
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* offset for it.
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*/
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(*pBackingGC->funcs->ChangeClip) (pBackingGC, CT_REGION,
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(pointer) pCompositeClip, 0);
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vals[0] = x_off - pDrawable->x;
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vals[1] = y_off - pDrawable->y;
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dixChangeGC(NullClient, pBackingGC,
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(GCClipXOrigin | GCClipYOrigin), vals, NULL);
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pPriv->serialNumber = pDrawable->serialNumber;
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/*
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* Mask off any client clip changes to make sure
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* the clip list set above remains in effect
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*/
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pPriv->stateChanges &= ~(GCClipXOrigin|GCClipYOrigin|GCClipMask);
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}
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if (pPriv->stateChanges) {
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CopyGC(pGC, pBackingGC, pPriv->stateChanges);
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pPriv->stateChanges = 0;
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}
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if ((pGC->patOrg.x + x_off) != pBackingGC->patOrg.x ||
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(pGC->patOrg.y + y_off) != pBackingGC->patOrg.y)
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{
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XID vals[2];
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vals[0] = pGC->patOrg.x + x_off;
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vals[1] = pGC->patOrg.y + y_off;
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dixChangeGC(NullClient, pBackingGC,
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(GCTileStipXOrigin | GCTileStipYOrigin), vals, NULL);
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}
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ValidateGC(pBackingDrawable, pBackingGC);
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FUNC_EPILOGUE(pGC, pPriv);
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}
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static void
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cwChangeGC(GCPtr pGC, unsigned long mask)
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{
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cwGCPtr pPriv = (cwGCPtr)(pGC)->devPrivates[cwGCIndex].ptr;
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FUNC_PROLOGUE(pGC, pPriv);
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(*pGC->funcs->ChangeGC) (pGC, mask);
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FUNC_EPILOGUE(pGC, pPriv);
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}
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static void
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cwCopyGC(GCPtr pGCSrc, unsigned long mask, GCPtr pGCDst)
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{
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cwGCPtr pPriv = (cwGCPtr)(pGCDst)->devPrivates[cwGCIndex].ptr;
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FUNC_PROLOGUE(pGCDst, pPriv);
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(*pGCDst->funcs->CopyGC) (pGCSrc, mask, pGCDst);
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FUNC_EPILOGUE(pGCDst, pPriv);
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}
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static void
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cwDestroyGC(GCPtr pGC)
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{
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cwGCPtr pPriv = (cwGCPtr)(pGC)->devPrivates[cwGCIndex].ptr;
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FUNC_PROLOGUE(pGC, pPriv);
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cwDestroyBackingGC(pGC);
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(*pGC->funcs->DestroyGC) (pGC);
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/* leave it unwrapped */
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}
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static void
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cwChangeClip(GCPtr pGC, int type, pointer pvalue, int nrects)
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{
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cwGCPtr pPriv = (cwGCPtr)(pGC)->devPrivates[cwGCIndex].ptr;
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FUNC_PROLOGUE(pGC, pPriv);
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(*pGC->funcs->ChangeClip)(pGC, type, pvalue, nrects);
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FUNC_EPILOGUE(pGC, pPriv);
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}
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static void
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cwCopyClip(GCPtr pgcDst, GCPtr pgcSrc)
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{
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cwGCPtr pPriv = (cwGCPtr)(pgcDst)->devPrivates[cwGCIndex].ptr;
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FUNC_PROLOGUE(pgcDst, pPriv);
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(*pgcDst->funcs->CopyClip)(pgcDst, pgcSrc);
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FUNC_EPILOGUE(pgcDst, pPriv);
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}
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static void
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cwDestroyClip(GCPtr pGC)
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{
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cwGCPtr pPriv = (cwGCPtr)(pGC)->devPrivates[cwGCIndex].ptr;
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FUNC_PROLOGUE(pGC, pPriv);
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(*pGC->funcs->DestroyClip)(pGC);
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FUNC_EPILOGUE(pGC, pPriv);
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}
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/*
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* Screen wrappers.
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*/
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#define SCREEN_PROLOGUE(pScreen, field) \
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((pScreen)->field = getCwScreen(pScreen)->field)
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#define SCREEN_EPILOGUE(pScreen, field, wrapper) do { \
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getCwScreen(pScreen)->field = (pScreen)->field; \
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(pScreen)->field = (wrapper); \
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} while (0)
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static Bool
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cwCreateGC(GCPtr pGC)
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{
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cwGCPtr pPriv = getCwGC(pGC);
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ScreenPtr pScreen = pGC->pScreen;
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Bool ret;
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bzero(pPriv, sizeof(cwGCRec));
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SCREEN_PROLOGUE(pScreen, CreateGC);
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if ( (ret = (*pScreen->CreateGC)(pGC)) )
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FUNC_EPILOGUE(pGC, pPriv);
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SCREEN_EPILOGUE(pScreen, CreateGC, cwCreateGC);
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return ret;
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}
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static void
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cwGetImage(DrawablePtr pSrc, int x, int y, int w, int h, unsigned int format,
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unsigned long planemask, char *pdstLine)
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{
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ScreenPtr pScreen = pSrc->pScreen;
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DrawablePtr pBackingDrawable;
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int src_off_x, src_off_y;
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SCREEN_PROLOGUE(pScreen, GetImage);
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pBackingDrawable = cwGetBackingDrawable(pSrc, &src_off_x, &src_off_y);
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CW_OFFSET_XY_SRC(x, y);
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(*pScreen->GetImage)(pBackingDrawable, x, y, w, h, format, planemask,
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pdstLine);
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SCREEN_EPILOGUE(pScreen, GetImage, cwGetImage);
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}
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static void
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cwGetSpans(DrawablePtr pSrc, int wMax, DDXPointPtr ppt, int *pwidth,
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int nspans, char *pdstStart)
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{
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ScreenPtr pScreen = pSrc->pScreen;
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DrawablePtr pBackingDrawable;
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int i;
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int src_off_x, src_off_y;
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SCREEN_PROLOGUE(pScreen, GetSpans);
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pBackingDrawable = cwGetBackingDrawable(pSrc, &src_off_x, &src_off_y);
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for (i = 0; i < nspans; i++)
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CW_OFFSET_XY_SRC(ppt[i].x, ppt[i].y);
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(*pScreen->GetSpans)(pBackingDrawable, wMax, ppt, pwidth, nspans,
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pdstStart);
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SCREEN_EPILOGUE(pScreen, GetSpans, cwGetSpans);
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}
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static void
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cwCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)
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{
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ScreenPtr pScreen = pWin->drawable.pScreen;
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SCREEN_PROLOGUE(pScreen, CopyWindow);
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if (!cwDrawableIsRedirWindow((DrawablePtr)pWin)) {
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(*pScreen->CopyWindow)(pWin, ptOldOrg, prgnSrc);
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} else {
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GCPtr pGC;
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BoxPtr pExtents;
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int x_off, y_off;
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int dx, dy;
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PixmapPtr pBackingPixmap;
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RegionPtr pClip;
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int src_x, src_y, dst_x, dst_y, w, h;
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dx = ptOldOrg.x - pWin->drawable.x;
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dy = ptOldOrg.y - pWin->drawable.y;
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pExtents = REGION_EXTENTS(pScreen, prgnSrc);
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pBackingPixmap = (PixmapPtr) cwGetBackingDrawable((DrawablePtr)pWin,
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&x_off, &y_off);
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src_x = pExtents->x1 - pBackingPixmap->screen_x;
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src_y = pExtents->y1 - pBackingPixmap->screen_y;
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w = pExtents->x2 - pExtents->x1;
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h = pExtents->y2 - pExtents->y1;
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dst_x = src_x - dx;
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dst_y = src_y - dy;
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/* Translate region (as required by API) */
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REGION_TRANSLATE(pScreen, prgnSrc, -dx, -dy);
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pGC = GetScratchGC(pBackingPixmap->drawable.depth, pScreen);
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/*
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* Copy region to GC as clip, aligning as dest clip
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*/
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pClip = REGION_CREATE (pScreen, NULL, 0);
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REGION_INTERSECT(pScreen, pClip, &pWin->borderClip, prgnSrc);
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REGION_TRANSLATE(pScreen, pClip,
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-pBackingPixmap->screen_x,
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-pBackingPixmap->screen_y);
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(*pGC->funcs->ChangeClip) (pGC, CT_REGION, pClip, 0);
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ValidateGC(&pBackingPixmap->drawable, pGC);
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(*pGC->ops->CopyArea) (&pBackingPixmap->drawable,
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&pBackingPixmap->drawable, pGC,
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src_x, src_y, w, h, dst_x, dst_y);
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(*pGC->funcs->DestroyClip) (pGC);
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FreeScratchGC(pGC);
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}
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SCREEN_EPILOGUE(pScreen, CopyWindow, cwCopyWindow);
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}
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static PixmapPtr
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cwGetWindowPixmap (WindowPtr pWin)
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{
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PixmapPtr pPixmap = getCwPixmap (pWin);
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if (!pPixmap)
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{
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ScreenPtr pScreen = pWin->drawable.pScreen;
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SCREEN_PROLOGUE(pScreen, GetWindowPixmap);
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if (pScreen->GetWindowPixmap)
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pPixmap = (*pScreen->GetWindowPixmap) (pWin);
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SCREEN_EPILOGUE(pScreen, GetWindowPixmap, cwGetWindowPixmap);
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}
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return pPixmap;
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}
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static void
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cwSetWindowPixmap (WindowPtr pWindow, PixmapPtr pPixmap)
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{
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ScreenPtr pScreen = pWindow->drawable.pScreen;
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if (pPixmap == (*pScreen->GetScreenPixmap) (pScreen))
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pPixmap = NULL;
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setCwPixmap (pWindow, pPixmap);
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}
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/* Screen initialization/teardown */
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void
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miInitializeCompositeWrapper(ScreenPtr pScreen)
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{
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cwScreenPtr pScreenPriv;
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#ifdef RENDER
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Bool has_render = GetPictureScreenIfSet(pScreen) != NULL;
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#endif
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if (cwGeneration != serverGeneration)
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{
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cwScreenIndex = AllocateScreenPrivateIndex();
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if (cwScreenIndex < 0)
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return;
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cwGCIndex = AllocateGCPrivateIndex();
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cwWindowIndex = AllocateWindowPrivateIndex();
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#ifdef RENDER
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if (has_render)
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cwPictureIndex = AllocatePicturePrivateIndex();
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#endif
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cwGeneration = serverGeneration;
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}
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if (!AllocateGCPrivate(pScreen, cwGCIndex, sizeof(cwGCRec)))
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return;
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if (!AllocateWindowPrivate(pScreen, cwWindowIndex, 0))
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return;
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#ifdef RENDER
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if (has_render) {
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if (!AllocatePicturePrivate(pScreen, cwPictureIndex, 0))
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return;
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}
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#endif
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pScreenPriv = (cwScreenPtr)xalloc(sizeof(cwScreenRec));
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if (!pScreenPriv)
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return;
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pScreen->devPrivates[cwScreenIndex].ptr = (pointer)pScreenPriv;
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|
|
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SCREEN_EPILOGUE(pScreen, CloseScreen, cwCloseScreen);
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SCREEN_EPILOGUE(pScreen, GetImage, cwGetImage);
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|
SCREEN_EPILOGUE(pScreen, GetSpans, cwGetSpans);
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|
SCREEN_EPILOGUE(pScreen, CreateGC, cwCreateGC);
|
|
SCREEN_EPILOGUE(pScreen, CopyWindow, cwCopyWindow);
|
|
|
|
SCREEN_EPILOGUE(pScreen, SetWindowPixmap, cwSetWindowPixmap);
|
|
SCREEN_EPILOGUE(pScreen, GetWindowPixmap, cwGetWindowPixmap);
|
|
|
|
#ifdef RENDER
|
|
if (has_render)
|
|
cwInitializeRender(pScreen);
|
|
#endif
|
|
}
|
|
|
|
static Bool
|
|
cwCloseScreen (int i, ScreenPtr pScreen)
|
|
{
|
|
cwScreenPtr pScreenPriv;
|
|
#ifdef RENDER
|
|
PictureScreenPtr ps = GetPictureScreenIfSet(pScreen);
|
|
#endif
|
|
|
|
pScreenPriv = (cwScreenPtr)pScreen->devPrivates[cwScreenIndex].ptr;
|
|
|
|
pScreen->CloseScreen = pScreenPriv->CloseScreen;
|
|
pScreen->GetImage = pScreenPriv->GetImage;
|
|
pScreen->GetSpans = pScreenPriv->GetSpans;
|
|
pScreen->CreateGC = pScreenPriv->CreateGC;
|
|
pScreen->CopyWindow = pScreenPriv->CopyWindow;
|
|
|
|
#ifdef RENDER
|
|
if (ps)
|
|
cwFiniRender(pScreen);
|
|
#endif
|
|
|
|
xfree((pointer)pScreenPriv);
|
|
|
|
return (*pScreen->CloseScreen)(i, pScreen);
|
|
}
|