ecore-drm2: Fix redrawing screen when we vt-switch back to a session

When we vt-switch away from a running session, we need to disable
rendering to an output and re-enable when we switch back. This patch
set essentially makes vt-switching work again in Enlightenment Wayland.

Signed-off-by: Chris Michael <cpmichael@osg.samsung.com>

3 files changed, 15 insertions, 2 deletions

diff --git a/src/lib/ecore_drm2/ecore_drm2_device.c b/src/lib/ecore_drm2/ecore_drm2_device.c
index 95b7315935..ad786e8269 100644
--- a/src/lib/ecore_drm2/ecore_drm2_device.c
+++ b/src/lib/ecore_drm2/ecore_drm2_device.c
@@ -9,12 +9,19 @@
 #endif
 
 static Eina_Bool
-_cb_session_active(void *data EINA_UNUSED, int type EINA_UNUSED, void *event)
+_cb_session_active(void *data, int type EINA_UNUSED, void *event)
 {
+   Eina_List *l;
+   Ecore_Drm2_Device *device;
+   Ecore_Drm2_Output *output;
    Elput_Event_Session_Active *ev;
    Ecore_Drm2_Event_Activate *ea;
 
    ev = event;
+   device = data;
+
+   EINA_LIST_FOREACH(device->outputs, l, output)
+     ecore_drm2_output_enabled_set(output, ev->active);
 
    ea = calloc(1, sizeof(Ecore_Drm2_Event_Activate));
    if (!ea) return ECORE_CALLBACK_RENEW;
diff --git a/src/lib/ecore_drm2/ecore_drm2_fb.c b/src/lib/ecore_drm2/ecore_drm2_fb.c
index 9032c122be..4b6b9a57a2 100644
--- a/src/lib/ecore_drm2/ecore_drm2_fb.c
+++ b/src/lib/ecore_drm2/ecore_drm2_fb.c
@@ -225,6 +225,8 @@ ecore_drm2_fb_flip(Ecore_Drm2_Fb *fb, Ecore_Drm2_Output *output, void *data)
    EINA_SAFETY_ON_NULL_RETURN_VAL(output, -1);
    EINA_SAFETY_ON_NULL_RETURN_VAL(output->current_mode, -1);
 
+   if (!output->enabled) return -1;
+
    if (output->next)
      WRN("Fb reused too soon, tearing may be visible");
 
diff --git a/src/lib/ecore_drm2/ecore_drm2_outputs.c b/src/lib/ecore_drm2/ecore_drm2_outputs.c
index 7596164f73..b8436ef70a 100644
--- a/src/lib/ecore_drm2/ecore_drm2_outputs.c
+++ b/src/lib/ecore_drm2/ecore_drm2_outputs.c
@@ -964,7 +964,11 @@ ecore_drm2_output_enabled_set(Ecore_Drm2_Output *output, Eina_Bool enabled)
    if (output->enabled)
      ecore_drm2_output_dpms_set(output, DRM_MODE_DPMS_ON);
    else
-     ecore_drm2_output_dpms_set(output, DRM_MODE_DPMS_OFF);
+     {
+        ecore_drm2_output_dpms_set(output, DRM_MODE_DPMS_OFF);
+        output->current = NULL;
+        output->next = NULL;
+     }
 
    _output_event_send(output);
 }