[mutter] wayland: use monitors info for outputs instead of kms outputs

[Jasper St. Pierre <jstpierre src gnome org>]

commit e2d602892400cdb20c942a3ed2ec79d09c5c0b26
Author: Dave Airlie <airlied redhat com>
Date:   Tue Mar 31 11:12:04 2015 +1000

    wayland: use monitors info for outputs instead of kms outputs
    
    Wayland shouldn't use KMS outputs, it should use the monitor
    infos to show its outputs, this will make tiled monitors work
    with wayland.

 src/wayland/meta-wayland-outputs.c |   86 +++++++++++++++++-------------------
 1 files changed, 41 insertions(+), 45 deletions(-)
---
diff --git a/src/wayland/meta-wayland-outputs.c b/src/wayland/meta-wayland-outputs.c
index 47fc8f5..776e6cc 100644
--- a/src/wayland/meta-wayland-outputs.c
+++ b/src/wayland/meta-wayland-outputs.c
@@ -32,7 +32,7 @@
 #include <string.h>
 
 typedef struct {
-  MetaOutput               *output;
+  MetaMonitorInfo          *monitor_info;
   struct wl_global         *global;
   int                       x, y;
   enum wl_output_transform  transform;
@@ -56,9 +56,10 @@ bind_output (struct wl_client *client,
              guint32 id)
 {
   MetaWaylandOutput *wayland_output = data;
-  MetaOutput *output = wayland_output->output;
+  MetaMonitorInfo *monitor_info = wayland_output->monitor_info;
   struct wl_resource *resource;
   guint mode_flags;
+  MetaOutput *output = monitor_info->outputs[0];
 
   resource = wl_resource_create (client, &wl_output_interface, version, id);
   wayland_output->resources = g_list_prepend (wayland_output->resources, resource);
@@ -66,17 +67,17 @@ bind_output (struct wl_client *client,
   wl_resource_set_user_data (resource, wayland_output);
   wl_resource_set_destructor (resource, output_resource_destroy);
 
-  meta_verbose ("Binding output %p/%s (%u, %u, %u, %u) x %f\n",
-                output, output->name,
-                output->crtc->rect.x, output->crtc->rect.y,
-                output->crtc->rect.width, output->crtc->rect.height,
-                output->crtc->current_mode->refresh_rate);
+  meta_verbose ("Binding monitor %p/%s (%u, %u, %u, %u) x %f\n",
+                monitor_info, output->name,
+                monitor_info->rect.x, monitor_info->rect.y,
+                monitor_info->rect.width, monitor_info->rect.height,
+                monitor_info->refresh_rate);
 
   wl_output_send_geometry (resource,
-                           (int)output->crtc->rect.x,
-                           (int)output->crtc->rect.y,
-                           output->width_mm,
-                           output->height_mm,
+                           (int)monitor_info->rect.x,
+                           (int)monitor_info->rect.y,
+                           monitor_info->width_mm,
+                           monitor_info->height_mm,
                            /* Cogl values reflect XRandR values,
                               and so does wayland */
                            output->subpixel_order,
@@ -92,9 +93,9 @@ bind_output (struct wl_client *client,
 
   wl_output_send_mode (resource,
                        mode_flags,
-                       (int)output->crtc->current_mode->width,
-                       (int)output->crtc->current_mode->height,
-                       (int)output->crtc->current_mode->refresh_rate);
+                       (int)monitor_info->rect.width,
+                       (int)monitor_info->rect.height,
+                       (int)monitor_info->refresh_rate);
 
   if (version >= WL_OUTPUT_SCALE_SINCE_VERSION)
     wl_output_send_scale (resource, output->scale);
@@ -128,14 +129,13 @@ wl_output_transform_from_meta_monitor_transform (MetaMonitorTransform transform)
 
 static void
 wayland_output_update_for_output (MetaWaylandOutput *wayland_output,
-                                  MetaOutput        *output)
+                                  MetaMonitorInfo *monitor_info)
 {
   GList *iter;
   guint mode_flags;
+  MetaOutput *output = monitor_info->outputs[0];
   enum wl_output_transform wl_transform = wl_output_transform_from_meta_monitor_transform 
(output->crtc->transform);
 
-  g_assert (output->crtc->current_mode != NULL);
-
   mode_flags = WL_OUTPUT_MODE_CURRENT;
   if (output->crtc->current_mode == output->preferred_mode)
     mode_flags |= WL_OUTPUT_MODE_PREFERRED;
@@ -144,15 +144,15 @@ wayland_output_update_for_output (MetaWaylandOutput *wayland_output,
     {
       struct wl_resource *resource = iter->data;
 
-      if (wayland_output->x != output->crtc->rect.x ||
-          wayland_output->y != output->crtc->rect.y ||
+      if (wayland_output->x != monitor_info->rect.x ||
+          wayland_output->y != monitor_info->rect.y ||
           wayland_output->transform != wl_transform)
         {
           wl_output_send_geometry (resource,
-                                   (int)output->crtc->rect.x,
-                                   (int)output->crtc->rect.y,
-                                   output->width_mm,
-                                   output->height_mm,
+                                   (int)monitor_info->rect.x,
+                                   (int)monitor_info->rect.y,
+                                   monitor_info->width_mm,
+                                   monitor_info->height_mm,
                                    output->subpixel_order,
                                    output->vendor,
                                    output->product,
@@ -161,16 +161,16 @@ wayland_output_update_for_output (MetaWaylandOutput *wayland_output,
 
       wl_output_send_mode (resource,
                            mode_flags,
-                           (int)output->crtc->current_mode->width,
-                           (int)output->crtc->current_mode->height,
-                           (int)output->crtc->current_mode->refresh_rate);
+                           (int)monitor_info->rect.width,
+                           (int)monitor_info->rect.height,
+                           (int)monitor_info->refresh_rate);
     }
 
   /* It's very important that we change the output pointer here, as
      the old structure is about to be freed by MetaMonitorManager */
-  wayland_output->output = output;
-  wayland_output->x = output->crtc->rect.x;
-  wayland_output->y = output->crtc->rect.y;
+  wayland_output->monitor_info = monitor_info;
+  wayland_output->x = monitor_info->rect.x;
+  wayland_output->y = monitor_info->rect.y;
   wayland_output->transform = wl_transform;
 }
 
@@ -178,30 +178,26 @@ static GHashTable *
 meta_wayland_compositor_update_outputs (MetaWaylandCompositor *compositor,
                                         MetaMonitorManager    *monitors)
 {
-  MetaOutput *outputs;
-  unsigned int i, n_outputs;
+  unsigned int i;
   GHashTable *new_table;
+  MetaMonitorInfo *monitor_infos;
+  unsigned int n_monitor_infos;
 
-  outputs = meta_monitor_manager_get_outputs (monitors, &n_outputs);
+  monitor_infos = meta_monitor_manager_get_monitor_infos (monitors, &n_monitor_infos);
   new_table = g_hash_table_new_full (NULL, NULL, NULL, wayland_output_destroy_notify);
 
-  for (i = 0; i < n_outputs; i++)
+  for (i = 0; i < n_monitor_infos; i++)
     {
-      MetaOutput *output = &outputs[i];
+      MetaMonitorInfo *info = &monitor_infos[i];
       MetaWaylandOutput *wayland_output;
 
-      /* wayland does not expose disabled outputs */
-      if (output->crtc == NULL)
-        {
-          g_hash_table_remove (compositor->outputs, GSIZE_TO_POINTER (output->winsys_id));
-          continue;
-        }
-
-      wayland_output = g_hash_table_lookup (compositor->outputs, GSIZE_TO_POINTER (output->winsys_id));
+      if (info->winsys_id == 0)
+        continue;
+      wayland_output = g_hash_table_lookup (compositor->outputs, GSIZE_TO_POINTER (info->winsys_id));
 
       if (wayland_output)
         {
-          g_hash_table_steal (compositor->outputs, GSIZE_TO_POINTER (output->winsys_id));
+          g_hash_table_steal (compositor->outputs, GSIZE_TO_POINTER (info->winsys_id));
         }
       else
         {
@@ -212,8 +208,8 @@ meta_wayland_compositor_update_outputs (MetaWaylandCompositor *compositor,
                                                      wayland_output, bind_output);
         }
 
-      wayland_output_update_for_output (wayland_output, output);
-      g_hash_table_insert (new_table, GSIZE_TO_POINTER (output->winsys_id), wayland_output);
+      wayland_output_update_for_output (wayland_output, info);
+      g_hash_table_insert (new_table, GSIZE_TO_POINTER (info->winsys_id), wayland_output);
     }
 
   g_hash_table_destroy (compositor->outputs);