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modesetting: Detect whether damage tracking is needed

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Call drmModeDirtyFB and check the return value to detect whether the
driver support for damage tracking is present, only initialize it in
that case.

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
This commit is contained in:
Keith Packard 2014-12-19 18:40:19 -08:00
parent 7804305673
commit 0d37c7e4b5
1 changed files with 16 additions and 11 deletions
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27
hw/xfree86/drivers/modesetting/driver.c
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@ -875,6 +875,7 @@ CreateScreenResources(ScreenPtr pScreen)
PixmapPtr rootPixmap;
Bool ret;
void *pixels = NULL;
int err;
pScreen->CreateScreenResources = ms->createScreenResources;
ret = pScreen->CreateScreenResources(pScreen);
@ -911,18 +912,22 @@ CreateScreenResources(ScreenPtr pScreen)
return FALSE;
}
ms->damage = DamageCreate(NULL, NULL, DamageReportNone, TRUE,
pScreen, rootPixmap);
err = drmModeDirtyFB(ms->fd, ms->drmmode.fb_id, NULL, 0);
if (ms->damage) {
DamageRegister(&rootPixmap->drawable, ms->damage);
ms->dirty_enabled = TRUE;
xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Damage tracking initialized\n");
}
else {
xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
"Failed to create screen damage record\n");
return FALSE;
if (err != -EINVAL && err != -ENOSYS) {
ms->damage = DamageCreate(NULL, NULL, DamageReportNone, TRUE,
pScreen, rootPixmap);
if (ms->damage) {
DamageRegister(&rootPixmap->drawable, ms->damage);
ms->dirty_enabled = TRUE;
xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Damage tracking initialized\n");
}
else {
xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
"Failed to create screen damage record\n");
return FALSE;
}
}
return ret;
}