(disregard previous message sent too soon)
Attached is a tentative patch that cleans that particular code up and fixes the
issue.
It would seem cleaner to perform the screen looping in ActivateDevice(), but
that would also mean changing miPointerDeviceInitialize and
miSpriteDeviceCursorInitialize to only perform their own setup once in that
case. Opinions?
Thanks,
- Pierre-Loup
On 04/06/2010 08:20 AM, Tiago Vignatti wrote:
On Tue, Apr 06, 2010 at 03:52:07AM +0200, ext Pierre-Loup A. Griffais wrote:
The DC code is broken for setups with several screens. Devs only have one pSave
pixmap and there's no code to thrash them like p[Save|Restore]GC.
That means if you have two X screens and force SW cursor on both, the server
will end up passing a bunch of CopyAreas with mismatching screens to the driver,
which can fail horribly if the driver does a good job abstracting screens away
from each other.
If helps you, I can confirm this happening here also.
Tiago
>From 2cee3907944d9a4c2624b5f4dbc609e408b8dd9b Mon Sep 17 00:00:00 2001
From: Pierre-Loup A. Griffais <[email protected]>
Date: Tue, 6 Apr 2010 14:32:14 -0700
Subject: [PATCH] mi: don't thrash resources when displaying the software cursor across screens
This changes the DC layer to maintain a persistent set of GCs/pixmaps/pictures
for each pScreen instead of failing to thrash between them when changing
screens.
Signed-off-by: Pierre-Loup A. Griffais <[email protected]>
---
mi/midispcur.c | 263 +++++++++++++++++++++++---------------------------------
1 files changed, 108 insertions(+), 155 deletions(-)
diff --git a/mi/midispcur.c b/mi/midispcur.c
index 3fb7e02..2187437 100644
--- a/mi/midispcur.c
+++ b/mi/midispcur.c
@@ -59,9 +59,9 @@ static DevPrivateKey miDCScreenKey = &miDCScreenKeyIndex;
static Bool miDCCloseScreen(int index, ScreenPtr pScreen);
-/* per device private data */
-static int miDCSpriteKeyIndex;
-static DevPrivateKey miDCSpriteKey = &miDCSpriteKeyIndex;
+/* per device per-screen private data */
+static int miDCSpriteKeyIndex[MAXSCREENS];
+static DevPrivateKey miDCSpriteKey = miDCSpriteKeyIndex;
typedef struct {
GCPtr pSourceGC, pMaskGC;
@@ -77,8 +77,8 @@ typedef struct {
#define MIDCBUFFER(dev) \
((DevHasCursor(dev)) ? \
- (miDCBufferPtr)dixLookupPrivate(&dev->devPrivates, miDCSpriteKey) : \
- (miDCBufferPtr)dixLookupPrivate(&dev->u.master->devPrivates, miDCSpriteKey))
+ (miDCBufferPtr)dixLookupPrivate(&dev->devPrivates, miDCSpriteKey + (pScreen)->myNum) : \
+ (miDCBufferPtr)dixLookupPrivate(&dev->u.master->devPrivates, miDCSpriteKey + (pScreen)->myNum))
/*
* The core pointer buffer will point to the index of the virtual core pointer
@@ -158,10 +158,6 @@ miDCInitialize (ScreenPtr pScreen, miPointerScreenFuncPtr screenFuncs)
return TRUE;
}
-#define tossGC(gc) (gc ? FreeGC (gc, (GContext) 0) : 0)
-#define tossPix(pix) (pix ? (*pScreen->DestroyPixmap) (pix) : TRUE)
-#define tossPict(pict) (pict ? FreePicture (pict, 0) : 0)
-
static Bool
miDCCloseScreen (int index, ScreenPtr pScreen)
{
@@ -183,7 +179,6 @@ miDCRealizeCursor (ScreenPtr pScreen, CursorPtr pCursor)
}
#ifdef ARGB_CURSOR
-#define EnsurePicture(picture,draw,win) (picture || miDCMakePicture(&picture,draw,win))
static VisualPtr
miDCGetWindowVisual (WindowPtr pWin)
@@ -415,12 +410,8 @@ miDCPutBits (
(*maskGC->ops->PushPixels) (maskGC, pPriv->maskBits, pDrawable, w, h, x, y);
}
-#define EnsureGC(gc,win) (gc || miDCMakeGC(&gc, win))
-
static GCPtr
-miDCMakeGC(
- GCPtr *ppGC,
- WindowPtr pWin)
+miDCMakeGC(ScreenPtr pScreen)
{
GCPtr pGC;
int status;
@@ -428,10 +419,9 @@ miDCMakeGC(
gcvals[0] = IncludeInferiors;
gcvals[1] = FALSE;
- pGC = CreateGC((DrawablePtr)pWin,
+ pGC = CreateGC((DrawablePtr)WindowTable[pScreen->myNum],
GCSubwindowMode|GCGraphicsExposures, gcvals, &status,
(XID)0, serverClient);
- *ppGC = pGC;
return pGC;
}
@@ -461,17 +451,6 @@ miDCPutUpCursor (DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor,
#ifdef ARGB_CURSOR
if (pPriv->pPicture)
{
- /* see comment in miDCPutUpCursor */
- if (pBuffer->pRootPicture &&
- pBuffer->pRootPicture->pDrawable &&
- pBuffer->pRootPicture->pDrawable->pScreen != pScreen)
- {
- tossPict(pBuffer->pRootPicture);
- pBuffer->pRootPicture = NULL;
- }
-
- if (!EnsurePicture(pBuffer->pRootPicture, &pWin->drawable, pWin))
- return FALSE;
CompositePicture (PictOpOver,
pPriv->pPicture,
NULL,
@@ -484,33 +463,6 @@ miDCPutUpCursor (DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor,
else
#endif
{
- /**
- * XXX: Before MPX, the sourceGC and maskGC were attached to the
- * screen, and would switch as the screen switches. With mpx we have
- * the GC's attached to the device now, so each time we switch screen
- * we need to make sure the GC's are allocated on the new screen.
- * This is ... not optimal. (whot)
- */
- if (pBuffer->pSourceGC && pScreen != pBuffer->pSourceGC->pScreen)
- {
- tossGC(pBuffer->pSourceGC);
- pBuffer->pSourceGC = NULL;
- }
-
- if (pBuffer->pMaskGC && pScreen != pBuffer->pMaskGC->pScreen)
- {
- tossGC(pBuffer->pMaskGC);
- pBuffer->pMaskGC = NULL;
- }
-
- if (!EnsureGC(pBuffer->pSourceGC, pWin))
- return FALSE;
- if (!EnsureGC(pBuffer->pMaskGC, pWin))
- {
- FreeGC (pBuffer->pSourceGC, (GContext) 0);
- pBuffer->pSourceGC = 0;
- return FALSE;
- }
miDCPutBits ((DrawablePtr)pWin, pPriv,
pBuffer->pSourceGC, pBuffer->pMaskGC,
x, y, pCursor->bits->width, pCursor->bits->height,
@@ -544,14 +496,7 @@ miDCSaveUnderCursor (DeviceIntPtr pDev, ScreenPtr pScreen,
if (!pSave)
return FALSE;
}
- /* see comment in miDCPutUpCursor */
- if (pBuffer->pSaveGC && pBuffer->pSaveGC->pScreen != pScreen)
- {
- tossGC(pBuffer->pSaveGC);
- pBuffer->pSaveGC = NULL;
- }
- if (!EnsureGC(pBuffer->pSaveGC, pWin))
- return FALSE;
+
pGC = pBuffer->pSaveGC;
if (pSave->drawable.serialNumber != pGC->serialNumber)
ValidateGC ((DrawablePtr) pSave, pGC);
@@ -578,14 +523,7 @@ miDCRestoreUnderCursor (DeviceIntPtr pDev, ScreenPtr pScreen,
pWin = WindowTable[pScreen->myNum];
if (!pSave)
return FALSE;
- /* see comment in miDCPutUpCursor */
- if (pBuffer->pRestoreGC && pBuffer->pRestoreGC->pScreen != pScreen)
- {
- tossGC(pBuffer->pRestoreGC);
- pBuffer->pRestoreGC = NULL;
- }
- if (!EnsureGC(pBuffer->pRestoreGC, pWin))
- return FALSE;
+
pGC = pBuffer->pRestoreGC;
if (pWin->drawable.serialNumber != pGC->serialNumber)
ValidateGC ((DrawablePtr) pWin, pGC);
@@ -616,14 +554,7 @@ miDCChangeSave (DeviceIntPtr pDev, ScreenPtr pScreen,
*/
if (!pSave)
return FALSE;
- /* see comment in miDCPutUpCursor */
- if (pBuffer->pRestoreGC && pBuffer->pRestoreGC->pScreen != pScreen)
- {
- tossGC(pBuffer->pRestoreGC);
- pBuffer->pRestoreGC = NULL;
- }
- if (!EnsureGC(pBuffer->pRestoreGC, pWin))
- return FALSE;
+
pGC = pBuffer->pRestoreGC;
if (pWin->drawable.serialNumber != pGC->serialNumber)
ValidateGC ((DrawablePtr) pWin, pGC);
@@ -662,14 +593,7 @@ miDCChangeSave (DeviceIntPtr pDev, ScreenPtr pScreen,
(*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pWin, pGC,
0, sourcey, -dx, copyh, x + dx, desty);
}
- /* see comment in miDCPutUpCursor */
- if (pBuffer->pSaveGC && pBuffer->pSaveGC->pScreen != pScreen)
- {
- tossGC(pBuffer->pSaveGC);
- pBuffer->pSaveGC = NULL;
- }
- if (!EnsureGC(pBuffer->pSaveGC, pWin))
- return FALSE;
+
pGC = pBuffer->pSaveGC;
if (pSave->drawable.serialNumber != pGC->serialNumber)
ValidateGC ((DrawablePtr) pSave, pGC);
@@ -770,7 +694,7 @@ miDCMoveCursor (DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor,
pTemp = pBuffer->pTemp;
if (!pTemp ||
- pTemp->drawable.width != pBuffer->pSave->drawable.width ||
+ pTemp->drawable.width != pBuffer->pSave->drawable.width ||
pTemp->drawable.height != pBuffer->pSave->drawable.height)
{
if (pTemp)
@@ -809,17 +733,9 @@ miDCMoveCursor (DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor,
#ifdef ARGB_CURSOR
if (pPriv->pPicture)
{
- /* see comment in miDCPutUpCursor */
- if (pBuffer->pTempPicture &&
- pBuffer->pTempPicture->pDrawable &&
- pBuffer->pTempPicture->pDrawable->pScreen != pScreen)
- {
- tossPict(pBuffer->pTempPicture);
- pBuffer->pTempPicture = NULL;
- }
+ if (!pBuffer->pTempPicture)
+ miDCMakePicture(&pBuffer->pTempPicture, &pTemp->drawable, pWin);
- if (!EnsurePicture(pBuffer->pTempPicture, &pTemp->drawable, pWin))
- return FALSE;
CompositePicture (PictOpOver,
pPriv->pPicture,
NULL,
@@ -832,38 +748,12 @@ miDCMoveCursor (DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor,
else
#endif
{
- if (!pBuffer->pPixSourceGC)
- {
- pBuffer->pPixSourceGC = CreateGC ((DrawablePtr)pTemp,
- GCGraphicsExposures, &gcval, &status, (XID)0, serverClient);
- if (!pBuffer->pPixSourceGC)
- return FALSE;
- }
- if (!pBuffer->pPixMaskGC)
- {
- pBuffer->pPixMaskGC = CreateGC ((DrawablePtr)pTemp,
- GCGraphicsExposures, &gcval, &status, (XID)0, serverClient);
- if (!pBuffer->pPixMaskGC)
- return FALSE;
- }
miDCPutBits ((DrawablePtr)pTemp, pPriv,
pBuffer->pPixSourceGC, pBuffer->pPixMaskGC,
dx, dy, pCursor->bits->width, pCursor->bits->height,
source, mask);
}
- /* see comment in miDCPutUpCursor */
- if (pBuffer->pRestoreGC && pBuffer->pRestoreGC->pScreen != pScreen)
- {
- tossGC(pBuffer->pRestoreGC);
- pBuffer->pRestoreGC = NULL;
- }
- /*
- * copy the temporary pixmap onto the screen
- */
-
- if (!EnsureGC(pBuffer->pRestoreGC, pWin))
- return FALSE;
pGC = pBuffer->pRestoreGC;
if (pWin->drawable.serialNumber != pGC->serialNumber)
ValidateGC ((DrawablePtr) pWin, pGC);
@@ -877,51 +767,114 @@ miDCMoveCursor (DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor,
static Bool
miDCDeviceInitialize(DeviceIntPtr pDev, ScreenPtr pScreen)
{
- miDCBufferPtr pBuffer;
-
- pBuffer = xalloc(sizeof(miDCBufferRec));
- dixSetPrivate(&pDev->devPrivates, miDCSpriteKey, pBuffer);
-
- pBuffer->pSourceGC =
- pBuffer->pMaskGC =
- pBuffer->pSaveGC =
- pBuffer->pRestoreGC =
- pBuffer->pMoveGC =
- pBuffer->pPixSourceGC =
- pBuffer->pPixMaskGC = NULL;
+ miDCBufferPtr pBuffer;
+ WindowPtr pWin;
+ XID gcval = FALSE;
+ int status;
+ int i;
+
+ if (!DevHasCursor(pDev))
+ return TRUE;
+
+ for (i = 0; i < screenInfo.numScreens; i++)
+ {
+ pScreen = screenInfo.screens[i];
+
+ pBuffer = xalloc(sizeof(miDCBufferRec));
+ if (!pBuffer)
+ goto failure;
+
+ dixSetPrivate(&pDev->devPrivates, miDCSpriteKey + pScreen->myNum, pBuffer);
+
+ pBuffer->pSourceGC = miDCMakeGC(pScreen);
+ if (!pBuffer->pSourceGC)
+ goto failure;
+
+ pBuffer->pMaskGC = miDCMakeGC(pScreen);
+ if (!pBuffer->pMaskGC)
+ goto failure;
+
+ pBuffer->pSaveGC = miDCMakeGC(pScreen);
+ if (!pBuffer->pSaveGC)
+ goto failure;
+
+ pBuffer->pRestoreGC = miDCMakeGC(pScreen);
+ if (!pBuffer->pRestoreGC)
+ goto failure;
+
+ pWin = WindowTable[pScreen->myNum];
+
+ pBuffer->pMoveGC = CreateGC ((DrawablePtr)pWin,
+ GCGraphicsExposures, &gcval, &status, (XID)0, serverClient);
+ if (!pBuffer->pMoveGC)
+ goto failure;
+
+ pBuffer->pPixSourceGC = CreateGC ((DrawablePtr)pWin,
+ GCGraphicsExposures, &gcval, &status, (XID)0, serverClient);
+ if (!pBuffer->pPixSourceGC)
+ goto failure;
+
+ pBuffer->pPixMaskGC = CreateGC ((DrawablePtr)pWin,
+ GCGraphicsExposures, &gcval, &status, (XID)0, serverClient);
+ if (!pBuffer->pPixMaskGC)
+ goto failure;
+
#ifdef ARGB_CURSOR
- pBuffer->pRootPicture = NULL;
- pBuffer->pTempPicture = NULL;
+ miDCMakePicture(&pBuffer->pRootPicture, &pWin->drawable, pWin);
+ if (!pBuffer->pRootPicture)
+ goto failure;
+
+ pBuffer->pTempPicture = NULL;
#endif
- pBuffer->pSave = pBuffer->pTemp = NULL;
+
+ // these get (re)allocated lazily depending on the cursor size
+ pBuffer->pSave = pBuffer->pTemp = NULL;
+ }
return TRUE;
+
+failure:
+
+ miDCDeviceCleanup(pDev, pScreen);
+
+ return FALSE;
}
static void
miDCDeviceCleanup(DeviceIntPtr pDev, ScreenPtr pScreen)
{
miDCBufferPtr pBuffer;
+ int i;
if (DevHasCursor(pDev))
{
- pBuffer = MIDCBUFFER(pDev);
- tossGC (pBuffer->pSourceGC);
- tossGC (pBuffer->pMaskGC);
- tossGC (pBuffer->pSaveGC);
- tossGC (pBuffer->pRestoreGC);
- tossGC (pBuffer->pMoveGC);
- tossGC (pBuffer->pPixSourceGC);
- tossGC (pBuffer->pPixMaskGC);
- tossPix (pBuffer->pSave);
- tossPix (pBuffer->pTemp);
+ for (i = 0; i < screenInfo.numScreens; i++)
+ {
+ pScreen = screenInfo.screens[i];
+
+ pBuffer = MIDCBUFFER(pDev);
+
+ if (pBuffer)
+ {
+ if (pBuffer->pSourceGC) FreeGC(pBuffer->pSourceGC, (GContext) 0);
+ if (pBuffer->pMaskGC) FreeGC(pBuffer->pSourceGC, (GContext) 0);
+ if (pBuffer->pSaveGC) FreeGC(pBuffer->pSourceGC, (GContext) 0);
+ if (pBuffer->pRestoreGC) FreeGC(pBuffer->pSourceGC, (GContext) 0);
+ if (pBuffer->pMoveGC) FreeGC(pBuffer->pSourceGC, (GContext) 0);
+ if (pBuffer->pPixSourceGC) FreeGC(pBuffer->pSourceGC, (GContext) 0);
+ if (pBuffer->pPixMaskGC) FreeGC(pBuffer->pSourceGC, (GContext) 0);
+
#ifdef ARGB_CURSOR
-#if 0 /* This has been free()d before */
- tossPict (pScreenPriv->pRootPicture);
-#endif
- tossPict (pBuffer->pTempPicture);
+ if (pBuffer->pRootPicture) FreePicture(pBuffer->pRootPicture, 0);
+ if (pBuffer->pTempPicture) FreePicture(pBuffer->pTempPicture, 0);
#endif
- xfree(pBuffer);
- dixSetPrivate(&pDev->devPrivates, miDCSpriteKey, NULL);
+
+ if (pBuffer->pSave) (*pScreen->DestroyPixmap)(pBuffer->pSave);
+ if (pBuffer->pTemp) (*pScreen->DestroyPixmap)(pBuffer->pTemp);
+
+ xfree(pBuffer);
+ dixSetPrivate(&pDev->devPrivates, miDCSpriteKey + pScreen->myNum, NULL);
+ }
+ }
}
}
--
1.7.0
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