[PATCH xserver] randr: Fix crtc_bounds when using rotation combined with reflection

[Hans de Goede]

Before this commit crtc_bounds() did not take reflection into account,
when using reflection with 0 / 180 degree rotation this was not an
issue because of the default in the switch-case doing the right thing.

But when using 90 / 270 degree rotation we would also end up in the
default which is wrong in this case. This would lead to the cursor
being constrained to a height x height area of the monitor.

This commit masks out the reflection bits for the switch-case,
making crtc_bounds return the correct bounds and fixing the
problematic cursor constraining.

Signed-off-by: Hans de Goede <hdegoede at redhat.com>
---
 randr/rrcrtc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/randr/rrcrtc.c b/randr/rrcrtc.c
index 7636591..5d404e8 100644
--- a/randr/rrcrtc.c
+++ b/randr/rrcrtc.c
@@ -281,7 +281,7 @@ crtc_bounds(RRCrtcPtr crtc, int *left, int *right, int *top, int *bottom)
     *left = crtc->x;
     *top = crtc->y;
 
-    switch (crtc->rotation) {
+    switch (crtc->rotation & 0xf) {
     case RR_Rotate_0:
     case RR_Rotate_180:
     default:
-- 
2.9.3