From: Michel Dänzer <[email protected]>

The kernel driver doesn't handle flipping between buffers with
different tiling parameters correctly.

Fixes display corruption with fullscreen apps using different tiling
modes (e.g. due to R600_DEBUG=notiling or R600_DEBUG=no2d) via DRI3.

Signed-off-by: Michel Dänzer <[email protected]>
---
 src/amdgpu_present.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/amdgpu_present.c b/src/amdgpu_present.c
index e36778c..dcb18da 100644
--- a/src/amdgpu_present.c
+++ b/src/amdgpu_present.c
@@ -262,6 +262,13 @@ amdgpu_present_check_flip(RRCrtcPtr crtc, WindowPtr 
window, PixmapPtr pixmap,
        if (info->drmmode.dri2_flipping)
                return FALSE;
 
+       /* The kernel driver doesn't handle flipping between BOs with different
+        * tiling parameters correctly yet
+        */
+       if (amdgpu_pixmap_get_tiling_info(pixmap) !=
+           amdgpu_pixmap_get_tiling_info(screen->GetScreenPixmap(screen)))
+               return FALSE;
+
        return amdgpu_present_check_unflip(scrn);
 }
 
-- 
2.10.1

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