xenocara/xserver/miext/damage/damage.h

/*
 * Copyright © 2003 Keith Packard
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of Keith Packard not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  Keith Packard makes no
 * representations about the suitability of this software for any purpose.  It
 * is provided "as is" without express or implied warranty.
 *
 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

#ifndef _DAMAGE_H_
#define _DAMAGE_H_

typedef struct _damage	*DamagePtr;

typedef enum _damageReportLevel {
    DamageReportRawRegion,
    DamageReportDeltaRegion,
    DamageReportBoundingBox,
    DamageReportNonEmpty,
    DamageReportNone
} DamageReportLevel;

typedef void (*DamageReportFunc) (DamagePtr pDamage, RegionPtr pRegion, void *closure);
typedef void (*DamageDestroyFunc) (DamagePtr pDamage, void *closure);
/* It's the responsibility of the driver to duplicate both regions. */
/* At some point DamageRegionRendered() must be called. */
typedef void (*DamageMarkerFunc) (DrawablePtr pDrawable, DamagePtr pDamage, RegionPtr pOldDamage, RegionPtr pRegion, void *closure);

typedef void (*DamageScreenCreateFunc) (DamagePtr);
typedef void (*DamageScreenRegisterFunc) (DrawablePtr, DamagePtr);
typedef void (*DamageScreenUnregisterFunc) (DrawablePtr, DamagePtr);
typedef void (*DamageScreenDestroyFunc) (DamagePtr);

typedef struct _damageScreenFuncs {
    DamageScreenCreateFunc      Create;
    DamageScreenRegisterFunc    Register;
    DamageScreenUnregisterFunc  Unregister;
    DamageScreenDestroyFunc     Destroy;
} DamageScreenFuncsRec, *DamageScreenFuncsPtr;

extern _X_EXPORT void miDamageCreate (DamagePtr);
extern _X_EXPORT void miDamageRegister (DrawablePtr, DamagePtr);
extern _X_EXPORT void miDamageUnregister (DrawablePtr, DamagePtr);
extern _X_EXPORT void miDamageDestroy (DamagePtr);

extern _X_EXPORT Bool
DamageSetup (ScreenPtr pScreen);
    
extern _X_EXPORT DamagePtr
DamageCreate (DamageReportFunc  damageReport,
	      DamageDestroyFunc	damageDestroy,
	      DamageReportLevel damageLevel,
	      Bool		isInternal,
	      ScreenPtr		pScreen,
	      void *		closure);

extern _X_EXPORT void
DamageDrawInternal (ScreenPtr pScreen, Bool enable);

extern _X_EXPORT void
DamageRegister (DrawablePtr	pDrawable,
		DamagePtr	pDamage);

extern _X_EXPORT void
DamageUnregister (DrawablePtr	pDrawable,
		  DamagePtr	pDamage);

extern _X_EXPORT void
DamageDestroy (DamagePtr pDamage);

extern _X_EXPORT Bool
DamageSubtract (DamagePtr	    pDamage,
		const RegionPtr	    pRegion);

extern _X_EXPORT void
DamageEmpty (DamagePtr pDamage);

extern _X_EXPORT RegionPtr
DamageRegion (DamagePtr		    pDamage);

extern _X_EXPORT RegionPtr
DamagePendingRegion (DamagePtr	    pDamage);

/* In case of rendering, call this before the submitting the commands. */
extern _X_EXPORT void
DamageRegionAppend (DrawablePtr pDrawable, RegionPtr pRegion);

/* Call this directly after the rendering operation has been submitted. */
extern _X_EXPORT void
DamageRegionProcessPending (DrawablePtr pDrawable);

/* Call this some time after rendering is done, only relevant when a damageMarker is provided. */
extern _X_EXPORT void
DamageRegionRendered (DrawablePtr pDrawable, DamagePtr pDamage, RegionPtr pOldDamage, RegionPtr pRegion);

/* Avoid using this call, it only exists for API compatibility. */
extern _X_EXPORT void
DamageDamageRegion (DrawablePtr	    pDrawable,
		    const RegionPtr pRegion);

extern _X_EXPORT void
DamageSetReportAfterOp (DamagePtr pDamage, Bool reportAfter);

extern _X_EXPORT void
DamageSetPostRenderingFunctions(DamagePtr pDamage, DamageReportFunc damageReportPostRendering,
				DamageMarkerFunc damageMarker);

extern _X_EXPORT DamageScreenFuncsPtr
DamageGetScreenFuncs (ScreenPtr);

#endif /* _DAMAGE_H_ */