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use a cap to decide if shadow is preferred or not.

This commit is contained in:
Dave Airlie 2012-02-16 19:41:40 +00:00
parent fc5f39acd4
commit 86080a5f7a
1 changed files with 13 additions and 1 deletions
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14
hw/xfree86/drivers/modesetting/driver.c
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@ -59,6 +59,10 @@
#include "driver.h"
#ifndef DRM_CAP_DUMB_PREFER_SHADOW
#define DRM_CAP_DUMB_PREFER_SHADOW 4
#endif
static void AdjustFrame(int scrnIndex, int x, int y, int flags);
static Bool CloseScreen(int scrnIndex, ScreenPtr pScreen);
static Bool EnterVT(int scrnIndex, int flags);
@ -380,6 +384,9 @@ PreInit(ScrnInfoPtr pScrn, int flags)
EntityInfoPtr pEnt;
EntPtr msEnt = NULL;
char *BusID, *devicename;
Bool prefer_shadow = TRUE;
uint64_t value = 0;
int ret;
if (pScrn->numEntities != 1)
return FALSE;
@ -480,7 +487,12 @@ PreInit(ScrnInfoPtr pScrn, int flags)
ms->drmmode.sw_cursor = TRUE;
}
ms->shadow_enable = xf86ReturnOptValBool(ms->Options, OPTION_SHADOW_FB, TRUE);
ret = drmGetCap(ms->fd, DRM_CAP_DUMB_PREFER_SHADOW, &value);
if (!ret) {
prefer_shadow = !!value;
}
ms->shadow_enable = xf86ReturnOptValBool(ms->Options, OPTION_SHADOW_FB, prefer_shadow);
ms->drmmode.fd = ms->fd;
if (drmmode_pre_init(pScrn, &ms->drmmode, pScrn->bitsPerPixel / 8) == FALSE) {