From 9b652580565e960bd497459fbf8f8baffb64d726 Mon Sep 17 00:00:00 2001
From: Matthieu Herrb <matthieu@cvs.openbsd.org>
Date: Fri, 3 Sep 2021 13:19:16 +0000
Subject: Update to xserver 1.20.13.

---
 xserver/randr/randr.c      | 27 +++++++++++++++++++++++++++
 xserver/randr/randrstr.h   |  7 +++++++
 xserver/randr/rrcrtc.c     | 43 ++++++++++++++++++++++++++++++++++++++++++-
 xserver/randr/rrprovider.c |  2 +-
 4 files changed, 77 insertions(+), 2 deletions(-)

(limited to 'xserver/randr')

diff --git a/xserver/randr/randr.c b/xserver/randr/randr.c
index 5db8b5ced..afc867ea9 100644
--- a/xserver/randr/randr.c
+++ b/xserver/randr/randr.c
@@ -693,6 +693,33 @@ RRFirstOutput(ScreenPtr pScreen)
     return NULL;
 }
 
+RRCrtcPtr
+RRFirstEnabledCrtc(ScreenPtr pScreen)
+{
+    rrScrPriv(pScreen);
+    RROutputPtr output;
+    int i, j;
+
+    if (!pScrPriv)
+        return NULL;
+
+    if (pScrPriv->primaryOutput && pScrPriv->primaryOutput->crtc &&
+        pScrPriv->primaryOutput->pScreen == pScreen)
+        return pScrPriv->primaryOutput->crtc;
+
+    for (i = 0; i < pScrPriv->numCrtcs; i++) {
+        RRCrtcPtr crtc = pScrPriv->crtcs[i];
+
+        for (j = 0; j < pScrPriv->numOutputs; j++) {
+            output = pScrPriv->outputs[j];
+            if (output->crtc == crtc && crtc->mode)
+                return crtc;
+        }
+    }
+    return NULL;
+}
+
+
 CARD16
 RRVerticalRefresh(xRRModeInfo * mode)
 {
diff --git a/xserver/randr/randrstr.h b/xserver/randr/randrstr.h
index 2cede92e3..28ba4ea91 100644
--- a/xserver/randr/randrstr.h
+++ b/xserver/randr/randrstr.h
@@ -593,6 +593,8 @@ extern _X_EXPORT Bool RRScreenInit(ScreenPtr pScreen);
 
 extern _X_EXPORT RROutputPtr RRFirstOutput(ScreenPtr pScreen);
 
+extern _X_EXPORT RRCrtcPtr RRFirstEnabledCrtc(ScreenPtr pScreen);
+
 extern _X_EXPORT Bool RROutputSetNonDesktop(RROutputPtr output, Bool non_desktop);
 
 extern _X_EXPORT CARD16
@@ -642,6 +644,11 @@ extern _X_EXPORT void
  */
 extern _X_EXPORT RRCrtcPtr RRCrtcCreate(ScreenPtr pScreen, void *devPrivate);
 
+/*
+ * Tests if findCrtc belongs to pScreen or slave screens
+ */
+extern _X_EXPORT Bool RRCrtcExists(ScreenPtr pScreen, RRCrtcPtr findCrtc);
+
 /*
  * Set the allowed rotations on a CRTC
  */
diff --git a/xserver/randr/rrcrtc.c b/xserver/randr/rrcrtc.c
index 7839a0eda..027a31a9e 100644
--- a/xserver/randr/rrcrtc.c
+++ b/xserver/randr/rrcrtc.c
@@ -27,7 +27,7 @@
 
 #include <X11/Xatom.h>
 
-RESTYPE RRCrtcType;
+RESTYPE RRCrtcType = 0;
 
 /*
  * Notify the CRTC of some change
@@ -960,6 +960,47 @@ RRCrtcGammaGet(RRCrtcPtr crtc)
     return ret;
 }
 
+static Bool RRCrtcInScreen(ScreenPtr pScreen, RRCrtcPtr findCrtc)
+{
+    rrScrPrivPtr pScrPriv;
+    int c;
+
+    if (pScreen == NULL)
+        return FALSE;
+
+    if (findCrtc == NULL)
+        return FALSE;
+
+    if (!dixPrivateKeyRegistered(rrPrivKey))
+        return FALSE;
+
+    pScrPriv = rrGetScrPriv(pScreen);
+    for (c = 0; c < pScrPriv->numCrtcs; c++) {
+        if (pScrPriv->crtcs[c] == findCrtc)
+            return TRUE;
+    }
+
+    return FALSE;
+}
+
+Bool RRCrtcExists(ScreenPtr pScreen, RRCrtcPtr findCrtc)
+{
+    ScreenPtr slave= NULL;
+
+    if (RRCrtcInScreen(pScreen, findCrtc))
+        return TRUE;
+
+    xorg_list_for_each_entry(slave, &pScreen->slave_list, slave_head) {
+        if (!slave->is_output_slave)
+            continue;
+        if (RRCrtcInScreen(slave, findCrtc))
+            return TRUE;
+    }
+
+    return FALSE;
+}
+
+
 /*
  * Notify the extension that the Crtc gamma has been changed
  * The driver calls this whenever it has changed the gamma values
diff --git a/xserver/randr/rrprovider.c b/xserver/randr/rrprovider.c
index c430f7477..d90477235 100644
--- a/xserver/randr/rrprovider.c
+++ b/xserver/randr/rrprovider.c
@@ -27,7 +27,7 @@
 
 #include <X11/Xatom.h>
 
-RESTYPE RRProviderType;
+RESTYPE RRProviderType = 0;
 
 /*
  * Initialize provider type error value
-- 
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