Expose viewports render targer RID

(cherry picked from commit ab60d3b65ce990a44fe595ec0860c0ae9ce9358d)

6 files changed, 18 insertions, 0 deletions

diff --git a/doc/classes/RenderingServer.xml b/doc/classes/RenderingServer.xml
index 08c1cc4bd3..05ac18c7fe 100644
--- a/doc/classes/RenderingServer.xml
+++ b/doc/classes/RenderingServer.xml
@@ -3215,6 +3215,13 @@
 			<description>
 			</description>
 		</method>
+		<method name="viewport_get_render_target" qualifiers="const">
+			<return type="RID" />
+			<param index="0" name="viewport" type="RID" />
+			<description>
+				Returns the render target for the viewport.
+			</description>
+		</method>
 		<method name="viewport_get_texture" qualifiers="const">
 			<return type="RID" />
 			<param index="0" name="viewport" type="RID" />
diff --git a/servers/rendering/renderer_viewport.cpp b/servers/rendering/renderer_viewport.cpp
index f609fa6023..8813c2e651 100644
--- a/servers/rendering/renderer_viewport.cpp
+++ b/servers/rendering/renderer_viewport.cpp
@@ -962,6 +962,13 @@ void RendererViewport::viewport_set_update_mode(RID p_viewport, RS::ViewportUpda
 	viewport->update_mode = p_mode;
 }
 
+RID RendererViewport::viewport_get_render_target(RID p_viewport) const {
+	const Viewport *viewport = viewport_owner.get_or_null(p_viewport);
+	ERR_FAIL_COND_V(!viewport, RID());
+
+	return viewport->render_target;
+}
+
 RID RendererViewport::viewport_get_texture(RID p_viewport) const {
 	const Viewport *viewport = viewport_owner.get_or_null(p_viewport);
 	ERR_FAIL_COND_V(!viewport, RID());
diff --git a/servers/rendering/renderer_viewport.h b/servers/rendering/renderer_viewport.h
index c24275de6e..2f9537a47c 100644
--- a/servers/rendering/renderer_viewport.h
+++ b/servers/rendering/renderer_viewport.h
@@ -231,6 +231,7 @@ public:
 
 	void viewport_set_clear_mode(RID p_viewport, RS::ViewportClearMode p_clear_mode);
 
+	RID viewport_get_render_target(RID p_viewport) const;
 	RID viewport_get_texture(RID p_viewport) const;
 	RID viewport_get_occluder_debug_texture(RID p_viewport) const;
 
diff --git a/servers/rendering/rendering_server_default.h b/servers/rendering/rendering_server_default.h
index a3bdf7d146..3e30ae0313 100644
--- a/servers/rendering/rendering_server_default.h
+++ b/servers/rendering/rendering_server_default.h
@@ -606,6 +606,7 @@ public:
 
 	FUNC2(viewport_set_update_mode, RID, ViewportUpdateMode)
 
+	FUNC1RC(RID, viewport_get_render_target, RID)
 	FUNC1RC(RID, viewport_get_texture, RID)
 
 	FUNC2(viewport_set_disable_2d, RID, bool)
diff --git a/servers/rendering_server.cpp b/servers/rendering_server.cpp
index 8380558e1c..12f4a199b6 100644
--- a/servers/rendering_server.cpp
+++ b/servers/rendering_server.cpp
@@ -2198,6 +2198,7 @@ void RenderingServer::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("viewport_set_texture_mipmap_bias", "viewport", "mipmap_bias"), &RenderingServer::viewport_set_texture_mipmap_bias);
 	ClassDB::bind_method(D_METHOD("viewport_set_update_mode", "viewport", "update_mode"), &RenderingServer::viewport_set_update_mode);
 	ClassDB::bind_method(D_METHOD("viewport_set_clear_mode", "viewport", "clear_mode"), &RenderingServer::viewport_set_clear_mode);
+	ClassDB::bind_method(D_METHOD("viewport_get_render_target", "viewport"), &RenderingServer::viewport_get_render_target);
 	ClassDB::bind_method(D_METHOD("viewport_get_texture", "viewport"), &RenderingServer::viewport_get_texture);
 	ClassDB::bind_method(D_METHOD("viewport_set_disable_3d", "viewport", "disable"), &RenderingServer::viewport_set_disable_3d);
 	ClassDB::bind_method(D_METHOD("viewport_set_disable_2d", "viewport", "disable"), &RenderingServer::viewport_set_disable_2d);
diff --git a/servers/rendering_server.h b/servers/rendering_server.h
index b53b7d2ff9..6b18914d38 100644
--- a/servers/rendering_server.h
+++ b/servers/rendering_server.h
@@ -837,6 +837,7 @@ public:
 
 	virtual void viewport_set_clear_mode(RID p_viewport, ViewportClearMode p_clear_mode) = 0;
 
+	virtual RID viewport_get_render_target(RID p_viewport) const = 0;
 	virtual RID viewport_get_texture(RID p_viewport) const = 0;
 
 	enum ViewportEnvironmentMode {