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vidmode: Let the driver resize the framebuffer when switching modes

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Resize the framebuffer when switching modes with VidMode. This allows
better interaction with randr, which may have shrunk the framebuffer
when changing to a smaller mode.
This commit is contained in:
Dan Nicholson 2019-01-25 07:13:48 -06:00
parent 709c656297
commit ea21759cec
1 changed files with 6 additions and 0 deletions
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6
hw/xfree86/common/xf86VidMode.c
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@ -42,6 +42,7 @@
#include "os.h"
#include "xf86.h"
#include "xf86Priv.h"
#include "xf86Crtc.h"
#include "extinit.h"
#ifdef XF86VIDMODE
@ -247,11 +248,16 @@ xf86VidModeSwitchMode(ScreenPtr pScreen, DisplayModePtr mode)
{
ScrnInfoPtr pScrn;
DisplayModePtr pTmpMode;
xf86CrtcConfigPtr config;
Bool retval;
pScrn = xf86ScreenToScrn(pScreen);
/* save in case we fail */
pTmpMode = pScrn->currentMode;
/* let the driver resize the framebuffer */
config = XF86_CRTC_CONFIG_PTR(pScrn);
if (!(*config->funcs->resize) (pScrn, mode->HDisplay, mode->VDisplay))
return FALSE;
/* Force a mode switch */
pScrn->currentMode = NULL;
retval = xf86SwitchMode(pScrn->pScreen, mode);