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/*
* Copyright © 2007 Red Hat, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Soft-
* ware"), to deal in the Software without restriction, including without
* limitation the rights to use, copy, modify, merge, publish, distribute,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, provided that the above copyright
* notice(s) and this permission notice appear in all copies of the Soft-
* ware and that both the above copyright notice(s) and this permission
* notice appear in supporting documentation.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
* ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
* RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
* THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
* QUENTIAL 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 PERFOR-
* MANCE OF THIS SOFTWARE.
*
* Except as contained in this notice, the name of a copyright holder shall
* not be used in advertising or otherwise to promote the sale, use or
* other dealings in this Software without prior written authorization of
* the copyright holder.
*
* Authors:
* Kristian Høgsberg (krh@redhat.com)
*/
#ifndef _DRI2_H_
#define _DRI2_H_
#include <X11/extensions/dri2tokens.h>
/* Version 2 structure (with format at the end) */
typedef struct {
unsigned int attachment;
unsigned int name;
unsigned int pitch;
unsigned int cpp;
unsigned int flags;
unsigned int format;
void *driverPrivate;
} DRI2BufferRec, *DRI2BufferPtr;
extern CARD8 dri2_major; /* version of DRI2 supported by DDX */
extern CARD8 dri2_minor;
typedef DRI2BufferRec DRI2Buffer2Rec, *DRI2Buffer2Ptr;
typedef void (*DRI2SwapEventPtr)(ClientPtr client, void *data, int type,
CARD64 ust, CARD64 msc, CARD64 sbc);
typedef DRI2BufferPtr (*DRI2CreateBuffersProcPtr)(DrawablePtr pDraw,
unsigned int *attachments,
int count);
typedef void (*DRI2DestroyBuffersProcPtr)(DrawablePtr pDraw,
DRI2BufferPtr buffers,
int count);
typedef void (*DRI2CopyRegionProcPtr)(DrawablePtr pDraw,
RegionPtr pRegion,
DRI2BufferPtr pDestBuffer,
DRI2BufferPtr pSrcBuffer);
typedef void (*DRI2WaitProcPtr)(WindowPtr pWin,
unsigned int sequence);
/**
* Schedule a buffer swap
*
* This callback is used to support glXSwapBuffers and the OML_sync_control
* extension (see it for a description of the params).
*
* Drivers should queue an event for the frame count that satisfies the
* parameters passed in. If the event is in the future (i.e. the conditions
* aren't currently satisfied), the server may block the client at the next
* GLX request using DRI2WaitSwap. When the event arrives, drivers should call
* \c DRI2SwapComplete, which will handle waking the client and returning
* the appropriate data.
*
* The DDX is responsible for doing a flip, exchange, or blit of the swap
* when the corresponding event arrives. The \c DRI2CanFlip and
* \c DRI2CanExchange functions can be used as helpers for this purpose.
*
* \param client client pointer (used for block/unblock)
* \param pDraw drawable whose count we want
* \param pDestBuffer current front buffer
* \param pSrcBuffer current back buffer
* \param target_msc frame count to wait for
* \param divisor divisor for condition equation
* \param remainder remainder for division equation
* \param func function to call when the swap completes
* \param data data for the callback \p func.
*/
typedef int (*DRI2ScheduleSwapProcPtr)(ClientPtr client,
DrawablePtr pDraw,
DRI2BufferPtr pDestBuffer,
DRI2BufferPtr pSrcBuffer,
CARD64 *target_msc,
CARD64 divisor,
CARD64 remainder,
DRI2SwapEventPtr func,
void *data);
typedef DRI2BufferPtr (*DRI2CreateBufferProcPtr)(DrawablePtr pDraw,
unsigned int attachment,
unsigned int format);
typedef void (*DRI2DestroyBufferProcPtr)(DrawablePtr pDraw,
DRI2BufferPtr buffer);
/**
* Get current media stamp counter values
*
* This callback is used to support the SGI_video_sync and OML_sync_control
* extensions.
*
* Drivers should return the current frame counter and the timestamp from
* when the returned frame count was last incremented.
*
* The count should correspond to the screen where the drawable is currently
* visible. If the drawable isn't visible (e.g. redirected), the server
* should return BadDrawable to the client, pending GLX spec updates to
* define this behavior.
*
* \param pDraw drawable whose count we want
* \param ust timestamp from when the count was last incremented.
* \param mst current frame count
*/
typedef int (*DRI2GetMSCProcPtr)(DrawablePtr pDraw, CARD64 *ust,
CARD64 *msc);
/**
* Schedule a frame count related wait
*
* This callback is used to support the SGI_video_sync and OML_sync_control
* extensions. See those specifications for details on how to handle
* the divisor and remainder parameters.
*
* Drivers should queue an event for the frame count that satisfies the
* parameters passed in. If the event is in the future (i.e. the conditions
* aren't currently satisfied), the driver should block the client using
* \c DRI2BlockClient. When the event arrives, drivers should call
* \c DRI2WaitMSCComplete, which will handle waking the client and returning
* the appropriate data.
*
* \param client client pointer (used for block/unblock)
* \param pDraw drawable whose count we want
* \param target_msc frame count to wait for
* \param divisor divisor for condition equation
* \param remainder remainder for division equation
*/
typedef int (*DRI2ScheduleWaitMSCProcPtr)(ClientPtr client,
DrawablePtr pDraw,
CARD64 target_msc,
CARD64 divisor,
CARD64 remainder);
/**
* Version of the DRI2InfoRec structure defined in this header
*/
#define DRI2INFOREC_VERSION 4
typedef struct {
unsigned int version; /**< Version of this struct */
int fd;
const char *driverName;
const char *deviceName;
DRI2CreateBufferProcPtr CreateBuffer;
DRI2DestroyBufferProcPtr DestroyBuffer;
DRI2CopyRegionProcPtr CopyRegion;
DRI2WaitProcPtr Wait;
/* added in version 4 */
DRI2ScheduleSwapProcPtr ScheduleSwap;
DRI2GetMSCProcPtr GetMSC;
DRI2ScheduleWaitMSCProcPtr ScheduleWaitMSC;
/* number of drivers in the driverNames array */
unsigned int numDrivers;
/* array of driver names, indexed by DRI2Driver* driver types */
/* a name of NULL means that driver is not supported */
const char * const *driverNames;
} DRI2InfoRec, *DRI2InfoPtr;
extern _X_EXPORT int DRI2EventBase;
extern _X_EXPORT Bool DRI2ScreenInit(ScreenPtr pScreen,
DRI2InfoPtr info);
extern _X_EXPORT void DRI2CloseScreen(ScreenPtr pScreen);
extern _X_EXPORT Bool DRI2HasSwapControl(ScreenPtr pScreen);
extern _X_EXPORT Bool DRI2Connect(ScreenPtr pScreen,
unsigned int driverType,
int *fd,
const char **driverName,
const char **deviceName);
extern _X_EXPORT Bool DRI2Authenticate(ScreenPtr pScreen, drm_magic_t magic);
extern _X_EXPORT int DRI2CreateDrawable(DrawablePtr pDraw);
extern _X_EXPORT void DRI2DestroyDrawable(DrawablePtr pDraw);
extern _X_EXPORT DRI2BufferPtr *DRI2GetBuffers(DrawablePtr pDraw,
int *width,
int *height,
unsigned int *attachments,
int count,
int *out_count);
extern _X_EXPORT int DRI2CopyRegion(DrawablePtr pDraw,
RegionPtr pRegion,
unsigned int dest,
unsigned int src);
/**
* Determine the major and minor version of the DRI2 extension.
*
* Provides a mechanism to other modules (e.g., 2D drivers) to determine the
* version of the DRI2 extension. While it is possible to peek directly at
* the \c XF86ModuleData from a layered module, such a module will fail to
* load (due to an unresolved symbol) if the DRI2 extension is not loaded.
*
* \param major Location to store the major verion of the DRI2 extension
* \param minor Location to store the minor verion of the DRI2 extension
*
* \note
* This interface was added some time after the initial release of the DRI2
* module. Layered modules that wish to use this interface must first test
* its existance by calling \c xf86LoaderCheckSymbol.
*/
extern _X_EXPORT void DRI2Version(int *major, int *minor);
extern _X_EXPORT DRI2BufferPtr *DRI2GetBuffersWithFormat(DrawablePtr pDraw,
int *width, int *height, unsigned int *attachments, int count,
int *out_count);
extern _X_EXPORT void DRI2SwapInterval(DrawablePtr pDrawable, int interval);
extern _X_EXPORT int DRI2SwapBuffers(ClientPtr client, DrawablePtr pDrawable,
CARD64 target_msc, CARD64 divisor,
CARD64 remainder, CARD64 *swap_target,
DRI2SwapEventPtr func, void *data);
extern _X_EXPORT Bool DRI2WaitSwap(ClientPtr client, DrawablePtr pDrawable);
extern _X_EXPORT int DRI2GetMSC(DrawablePtr pDrawable, CARD64 *ust,
CARD64 *msc, CARD64 *sbc);
extern _X_EXPORT int DRI2WaitMSC(ClientPtr client, DrawablePtr pDrawable,
CARD64 target_msc, CARD64 divisor,
CARD64 remainder);
extern _X_EXPORT int ProcDRI2WaitMSCReply(ClientPtr client, CARD64 ust,
CARD64 msc, CARD64 sbc);
extern _X_EXPORT int DRI2WaitSBC(ClientPtr client, DrawablePtr pDraw,
CARD64 target_sbc, CARD64 *ust, CARD64 *msc,
CARD64 *sbc);
extern _X_EXPORT Bool DRI2ThrottleClient(ClientPtr client, DrawablePtr pDraw);
extern _X_EXPORT Bool DRI2CanFlip(DrawablePtr pDraw);
extern _X_EXPORT Bool DRI2CanExchange(DrawablePtr pDraw);
/* Note: use *only* for MSC related waits */
extern _X_EXPORT void DRI2BlockClient(ClientPtr client, DrawablePtr pDraw);
extern _X_EXPORT void DRI2SwapComplete(ClientPtr client, DrawablePtr pDraw,
int frame, unsigned int tv_sec,
unsigned int tv_usec, int type,
DRI2SwapEventPtr swap_complete,
void *swap_data);
extern _X_EXPORT void DRI2WaitMSCComplete(ClientPtr client, DrawablePtr pDraw,
int frame, unsigned int tv_sec,
unsigned int tv_usec);
#endif
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