Convert most demos to GLES 2

Also fix Viewport error in 3D scaling demo, add an icon to Multiplayer Bomber, and rename BPM sync files.

viewport/3d_scaling/hud.gd

@@ -10,7 +10,7 @@ extends Control
 var scale_factor = 1.0
 
 onready var texture_rect = $TextureRect
-onready var viewport = $TextureRect/Viewport
+onready var viewport = $Viewport
 onready var scale_label = $VBoxContainer/Scale
 onready var filter_label = $VBoxContainer/Filter
 

viewport/3d_scaling/hud.tscn

@@ -12,7 +12,7 @@ font_data = ExtResource( 1 )
 default_font = SubResource( 1 )
 
 [sub_resource type="ViewportTexture" id=3]
-viewport_path = NodePath("TextureRect/Viewport")
+viewport_path = NodePath("Viewport")
 
 [node name="HUD" type="Control"]
 anchor_right = 1.0
@@ -23,6 +23,15 @@ __meta__ = {
 "_edit_use_anchors_": false
 }
 
+[node name="Viewport" type="Viewport" parent="."]
+size = Vector2( 1024, 600 )
+handle_input_locally = false
+usage = 3
+render_target_update_mode = 3
+shadow_atlas_size = 4096
+
+[node name="Spatial" parent="Viewport" instance=ExtResource( 2 )]
+
 [node name="TextureRect" type="TextureRect" parent="."]
 anchor_right = 1.0
 anchor_bottom = 1.0
@@ -34,15 +43,6 @@ __meta__ = {
 "_editor_description_": ""
 }
 
-[node name="Viewport" type="Viewport" parent="TextureRect"]
-size = Vector2( 1024, 600 )
-handle_input_locally = false
-usage = 3
-render_target_update_mode = 3
-shadow_atlas_size = 4096
-
-[node name="Spatial" parent="TextureRect/Viewport" instance=ExtResource( 2 )]
-
 [node name="ViewportContainer" type="ViewportContainer" parent="."]
 anchor_right = 1.0
 anchor_bottom = 1.0

viewport/3d_scaling/project.godot

@@ -39,5 +39,6 @@ toggle_filtering={
 
 [rendering]
 
+quality/driver/driver_name="GLES2"
 quality/intended_usage/framebuffer_allocation=3
 environment/default_environment="res://default_env.tres"