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DRI2: Add ReuseBufferNotify hook

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ReuseBufferNotify hook is called whenever old buffer is reused in DRI2
code.

Driver can use this hook to rewrite the buffer name if hardware requires
shared buffers. Shared buffer might be some hardware limited resources like
framebuffer that is preallocated in boot.

Signed-off-by: Pauli Nieminen <ext-pauli.nieminen@nokia.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Pauli Nieminen 2010-11-01 16:21:59 +02:00 committed by Keith Packard
parent 2f47433fef
commit 86f8da0aa7
2 changed files with 23 additions and 1 deletions
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8
hw/xfree86/dri2/dri2.c
View File

@ -102,6 +102,7 @@ typedef struct _DRI2Screen {
DRI2GetMSCProcPtr GetMSC;
DRI2ScheduleWaitMSCProcPtr ScheduleWaitMSC;
DRI2AuthMagicProcPtr AuthMagic;
DRI2ReuseBufferNotifyProcPtr ReuseBufferNotify;
HandleExposuresProcPtr HandleExposures;
@ -352,6 +353,10 @@ allocate_or_reuse_buffer(DrawablePtr pDraw, DRI2ScreenPtr ds,
} else {
*buffer = pPriv->buffers[old_buf];
if (ds->ReuseBufferNotify)
(*ds->ReuseBufferNotify)(pDraw, *buffer);
pPriv->buffers[old_buf] = NULL;
return FALSE;
}
@ -1128,6 +1133,9 @@ DRI2ScreenInit(ScreenPtr pScreen, DRI2InfoPtr info)
ds->AuthMagic = info->AuthMagic;
}
if (info->version >= 6)
ds->ReuseBufferNotify = info->ReuseBufferNotify;
/*
* if the driver doesn't provide an AuthMagic function or the info struct
* version is too low, it relies on the old method (using libdrm) or fail

16
hw/xfree86/dri2/dri2.h
View File

@ -109,6 +109,16 @@ typedef DRI2BufferPtr (*DRI2CreateBufferProcPtr)(DrawablePtr pDraw,
unsigned int format);
typedef void (*DRI2DestroyBufferProcPtr)(DrawablePtr pDraw,
DRI2BufferPtr buffer);
/**
* Notifies driver when DRI2GetBuffers reuses a dri2 buffer.
*
* Driver may rename the dri2 buffer in this notify if it is required.
*
* \param pDraw drawable whose count we want
* \param buffer buffer that will be returned to client
*/
typedef void (*DRI2ReuseBufferNotifyProcPtr)(DrawablePtr pDraw,
DRI2BufferPtr buffer);
/**
* Get current media stamp counter values
*
@ -161,7 +171,7 @@ typedef void (*DRI2InvalidateProcPtr)(DrawablePtr pDraw,
/**
* Version of the DRI2InfoRec structure defined in this header
*/
#define DRI2INFOREC_VERSION 5
#define DRI2INFOREC_VERSION 6
typedef struct {
unsigned int version; /**< Version of this struct */
@ -189,6 +199,10 @@ typedef struct {
/* added in version 5 */
DRI2AuthMagicProcPtr AuthMagic;
/* added in version 6 */
DRI2ReuseBufferNotifyProcPtr ReuseBufferNotify;
} DRI2InfoRec, *DRI2InfoPtr;
extern _X_EXPORT int DRI2EventBase;