[PATCH 4/5] Update scanout pixmap contents before setting a mode with it

[Michel Dänzer]

From: Michel Dänzer <michel.daenzer at amd.com>

This ensures the scanout pixmaps used for Option "TearFree" and Option
"ShadowPrimary" have been initialized when their initial mode is set.

Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
---
 src/drmmode_display.c | 2 ++
 src/radeon.h          | 4 ++++
 src/radeon_kms.c      | 2 +-
 3 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/drmmode_display.c b/src/drmmode_display.c
index 064a64c..8caad70 100644
--- a/src/drmmode_display.c
+++ b/src/drmmode_display.c
@@ -718,6 +718,8 @@ drmmode_set_mode_major(xf86CrtcPtr crtc, DisplayModePtr mode,
 				drmmode_crtc->scanout_id = 0;
 				fb_id = drmmode_crtc->scanout[0].fb_id;
 				x = y = 0;
+
+				radeon_scanout_update_handler(pScrn, 0, 0, crtc);
 			}
 		}
 		ret = drmModeSetCrtc(drmmode->fd, drmmode_crtc->mode_crtc->crtc_id,
diff --git a/src/radeon.h b/src/radeon.h
index 962a68d..8220da7 100644
--- a/src/radeon.h
+++ b/src/radeon.h
@@ -593,6 +593,10 @@ extern Bool RADEONGetPixmapOffsetPitch(PixmapPtr pPix,
 /* radeon_dri3.c */
 Bool radeon_dri3_screen_init(ScreenPtr screen);
 
+/* radeon_kms.c */
+void radeon_scanout_update_handler(ScrnInfoPtr scrn, uint32_t frame,
+				   uint64_t usec, void *event_data);
+
 /* radeon_present.c */
 Bool radeon_present_screen_init(ScreenPtr screen);
 
diff --git a/src/radeon_kms.c b/src/radeon_kms.c
index eda3f33..082c5b6 100644
--- a/src/radeon_kms.c
+++ b/src/radeon_kms.c
@@ -385,7 +385,7 @@ radeon_scanout_update_abort(ScrnInfoPtr scrn, void *event_data)
     drmmode_crtc->scanout_update_pending = FALSE;
 }
 
-static void
+void
 radeon_scanout_update_handler(ScrnInfoPtr scrn, uint32_t frame, uint64_t usec,
 			      void *event_data)
 {
-- 
2.1.4