[PATCH 1/1] randr: make RROutputChanged change the main protocol screen not the gpu screen

[Alberto Milone]

We only set changes on the main protocol screen as, for example
in RRSetChanged() and RRTellChanged(), therefore we should follow
the same logic when reporting that an output changed in
RROutputChanged().

This means that RRTellChanged() will then update the relevant
timestamps also when events come from gpu screens.

Signed-off-by: Alberto Milone <alberto.milone at canonical.com>
---
 randr/rroutput.c |   26 +++++++++++++++++++++-----
 1 file changed, 21 insertions(+), 5 deletions(-)

diff --git a/randr/rroutput.c b/randr/rroutput.c
index 2b0b82f..8229046 100644
--- a/randr/rroutput.c
+++ b/randr/rroutput.c
@@ -31,15 +31,31 @@ RESTYPE RROutputType;
 void
 RROutputChanged(RROutputPtr output, Bool configChanged)
 {
+    /* set changed bits on the master screen only */
     ScreenPtr pScreen = output->pScreen;
 
     output->changed = TRUE;
-    if (pScreen) {
-        rrScrPriv(pScreen);
-        RRSetChanged(pScreen);
-        if (configChanged)
-            pScrPriv->configChanged = TRUE;
+    if (!pScreen)
+        return;
+
+    ScreenPtr master;
+    rrScrPriv(pScreen);
+    rrScrPrivPtr mastersp;
+
+    if (pScreen->isGPU) {
+        master = pScreen->current_master;
+        if (!master)
+            return;
+        mastersp = rrGetScrPriv(master);
     }
+    else {
+        master = pScreen;
+        mastersp = pScrPriv;
+    }
+
+    RRSetChanged(pScreen);
+    if (configChanged)
+        mastersp->configChanged = TRUE;
 }
 
 /*
-- 
1.7.9.5