st/xorg: Proper calculation of screen pitch.

diff --git a/src/gallium/state_trackers/xorg/xorg_driver.c b/src/gallium/state_trackers/xorg/xorg_driver.c
index 4d169a1d14caa285f020bb44d97f9bef71c24bc0..b02fe68f313aee83aab0bf1488db8a5892ee4a65 100644 (file)
--- a/src/gallium/state_trackers/xorg/xorg_driver.c
+++ b/src/gallium/state_trackers/xorg/xorg_driver.c
@@ -181,8 +181,7 @@ drv_crtc_resize(ScrnInfoPtr pScrn, int width, int height)
     if (!pScreen->ModifyPixmapHeader(rootPixmap, width, height, -1, -1, -1, NULL))
        return FALSE;
 
-    /* HW dependent - FIXME */
-    pScrn->displayWidth = pScrn->virtualX;
+    pScrn->displayWidth = rootPixmap->devKind / (rootPixmap->drawable.bitsPerPixel / 8);
 
     /* now create new frontbuffer */
     return ms->create_front_buffer(pScrn) && ms->bind_front_buffer(pScrn);