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/*
Copyright (C) 1999. The XFree86 Project Inc.
Copyright 2014 Red Hat, Inc.
Written by Mark Vojkovich (mvojkovi@ucsd.edu)
Pre-fb-write callbacks and RENDER support - Nolan Leake (nolan@vmware.com)
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include <X11/X.h>
#include <X11/Xproto.h>
#include "misc.h"
#include "pixmapstr.h"
#include "input.h"
#include <X11/fonts/font.h>
#include "mi.h"
#include "scrnintstr.h"
#include "windowstr.h"
#include "gcstruct.h"
#include "dixfontstr.h"
#include <X11/fonts/fontstruct.h>
#include "xf86.h"
#include "xf86str.h"
#include "shadowfb.h"
#include "picturestr.h"
static Bool ShadowCloseScreen(ScreenPtr pScreen);
static Bool ShadowCreateScreenResources(ScreenPtr pScreen);
typedef struct {
ScrnInfoPtr pScrn;
RefreshAreaFuncPtr preRefresh;
RefreshAreaFuncPtr postRefresh;
CloseScreenProcPtr CloseScreen;
CreateScreenResourcesProcPtr CreateScreenResources;
} ShadowScreenRec, *ShadowScreenPtr;
static DevPrivateKeyRec ShadowScreenKeyRec;
static ShadowScreenPtr
shadowfbGetScreenPrivate(ScreenPtr pScreen)
{
return dixLookupPrivate(&(pScreen)->devPrivates, &ShadowScreenKeyRec);
}
Bool
ShadowFBInit2(ScreenPtr pScreen,
RefreshAreaFuncPtr preRefreshArea,
RefreshAreaFuncPtr postRefreshArea)
{
ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
ShadowScreenPtr pPriv;
if (!preRefreshArea && !postRefreshArea)
return FALSE;
if (!dixRegisterPrivateKey(&ShadowScreenKeyRec, PRIVATE_SCREEN, 0))
return FALSE;
if (!(pPriv = (ShadowScreenPtr) malloc(sizeof(ShadowScreenRec))))
return FALSE;
dixSetPrivate(&pScreen->devPrivates, &ShadowScreenKeyRec, pPriv);
pPriv->pScrn = pScrn;
pPriv->preRefresh = preRefreshArea;
pPriv->postRefresh = postRefreshArea;
pPriv->CloseScreen = pScreen->CloseScreen;
pPriv->CreateScreenResources = pScreen->CreateScreenResources;
pScreen->CloseScreen = ShadowCloseScreen;
pScreen->CreateScreenResources = ShadowCreateScreenResources;
return TRUE;
}
Bool
ShadowFBInit(ScreenPtr pScreen, RefreshAreaFuncPtr refreshArea)
{
return ShadowFBInit2(pScreen, NULL, refreshArea);
}
/*
* Note that we don't do DamageEmpty, or indeed look at the region inside the
* DamagePtr at all. This is an optimization, believe it or not. The
* incoming RegionPtr is the new damage, and if we were to empty the region
* miext/damage would just have to waste time reallocating and re-unioning
* it every time, whereas if we leave it around the union gets fast-pathed
* away.
*/
static void
shadowfbReportPre(DamagePtr damage, RegionPtr reg, void *closure)
{
ShadowScreenPtr pPriv = closure;
if (!pPriv->pScrn->vtSema)
return;
pPriv->preRefresh(pPriv->pScrn, RegionNumRects(reg), RegionRects(reg));
}
static void
shadowfbReportPost(DamagePtr damage, RegionPtr reg, void *closure)
{
ShadowScreenPtr pPriv = closure;
if (!pPriv->pScrn->vtSema)
return;
pPriv->postRefresh(pPriv->pScrn, RegionNumRects(reg), RegionRects(reg));
}
static Bool
ShadowCreateScreenResources(ScreenPtr pScreen)
{
Bool ret;
WindowPtr pWin = pScreen->root;
ShadowScreenPtr pPriv = shadowfbGetScreenPrivate(pScreen);
pScreen->CreateScreenResources = pPriv->CreateScreenResources;
ret = pScreen->CreateScreenResources(pScreen);
pPriv->CreateScreenResources = pScreen->CreateScreenResources;
pScreen->CreateScreenResources = ShadowCreateScreenResources;
/* this might look like it leaks, but the damage code reaps listeners
* when their drawable disappears.
*/
if (ret) {
DamagePtr damage;
if (pPriv->preRefresh) {
damage = DamageCreate(shadowfbReportPre, NULL,
DamageReportRawRegion,
TRUE, pScreen, pPriv);
DamageRegister(&pWin->drawable, damage);
}
if (pPriv->postRefresh) {
damage = DamageCreate(shadowfbReportPost, NULL,
DamageReportRawRegion,
TRUE, pScreen, pPriv);
DamageSetReportAfterOp(damage, TRUE);
DamageRegister(&pWin->drawable, damage);
}
}
return ret;
}
static Bool
ShadowCloseScreen(ScreenPtr pScreen)
{
ShadowScreenPtr pPriv = shadowfbGetScreenPrivate(pScreen);
pScreen->CloseScreen = pPriv->CloseScreen;
pScreen->CreateScreenResources = pPriv->CreateScreenResources;
free(pPriv);
return (*pScreen->CloseScreen) (pScreen);
}
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