Deprecate ImmediateGeometry

* Removed entirely from RenderingServer.
* Replaced by ImmediateMesh resource.
* ImmediateMesh replaces ImmediateGeometry, but could use more optimization in the future.
* Sprite3D and AnimatedSprite3D work again, ported from Godot 3.x (though a lot of work was needed to adapt them to Godot 4).
* RootMotionView works again.
* Polygon3D editor works again.

1 files changed, 18 insertions, 16 deletions

diff --git a/scene/animation/root_motion_view.cpp b/scene/animation/root_motion_view.cpp
index b963cf5702..770996820d 100644
--- a/scene/animation/root_motion_view.cpp
+++ b/scene/animation/root_motion_view.cpp
@@ -77,7 +77,7 @@ bool RootMotionView::get_zero_y() const {
 
 void RootMotionView::_notification(int p_what) {
 	if (p_what == NOTIFICATION_ENTER_TREE) {
-		RS::get_singleton()->immediate_set_material(immediate, StandardMaterial3D::get_material_rid_for_2d(false, true, false, false, false));
+		immediate_material = StandardMaterial3D::get_material_for_2d(false, true, false, false, false);
 		first = true;
 	}
 
@@ -119,11 +119,12 @@ void RootMotionView::_notification(int p_what) {
 		}
 		accumulated.origin.z = Math::fposmod(accumulated.origin.z, cell_size);
 
-		RS::get_singleton()->immediate_clear(immediate);
+		immediate->clear_surfaces();
 
 		int cells_in_radius = int((radius / cell_size) + 1.0);
 
-		RS::get_singleton()->immediate_begin(immediate, RS::PRIMITIVE_LINES);
+		immediate->surface_begin(Mesh::PRIMITIVE_LINES, immediate_material);
+
 		for (int i = -cells_in_radius; i < cells_in_radius; i++) {
 			for (int j = -cells_in_radius; j < cells_in_radius; j++) {
 				Vector3 from(i * cell_size, 0, j * cell_size);
@@ -138,21 +139,21 @@ void RootMotionView::_notification(int p_what) {
 				c_i.a *= MAX(0, 1.0 - from_i.length() / radius);
 				c_j.a *= MAX(0, 1.0 - from_j.length() / radius);
 
-				RS::get_singleton()->immediate_color(immediate, c);
-				RS::get_singleton()->immediate_vertex(immediate, from);
+				immediate->surface_set_color(c);
+				immediate->surface_add_vertex(from);
 
-				RS::get_singleton()->immediate_color(immediate, c_i);
-				RS::get_singleton()->immediate_vertex(immediate, from_i);
+				immediate->surface_set_color(c_i);
+				immediate->surface_add_vertex(from_i);
 
-				RS::get_singleton()->immediate_color(immediate, c);
-				RS::get_singleton()->immediate_vertex(immediate, from);
+				immediate->surface_set_color(c);
+				immediate->surface_add_vertex(from);
 
-				RS::get_singleton()->immediate_color(immediate, c_j);
-				RS::get_singleton()->immediate_vertex(immediate, from_j);
+				immediate->surface_set_color(c_j);
+				immediate->surface_add_vertex(from_j);
 			}
 		}
 
-		RS::get_singleton()->immediate_end(immediate);
+		immediate->surface_end();
 	}
 }
 
@@ -188,12 +189,13 @@ void RootMotionView::_bind_methods() {
 }
 
 RootMotionView::RootMotionView() {
-	set_process_internal(true);
-	immediate = RenderingServer::get_singleton()->immediate_create();
-	set_base(immediate);
+	if (Engine::get_singleton()->is_editor_hint()) {
+		set_process_internal(true);
+	}
+	immediate.instantiate();
+	set_base(immediate->get_rid());
 }
 
 RootMotionView::~RootMotionView() {
 	set_base(RID());
-	RenderingServer::get_singleton()->free(immediate);
 }