Auto-set a port source for texture nodes created by dragged connection

editor/plugins/visual_shader_editor_plugin.cpp

@@ -2445,6 +2445,14 @@ void VisualShaderEditor::_add_node(int p_idx, int p_op_idx, String p_resource_pa
 		vsnode->set_script(add_options[p_idx].script);
 	}
 
+	bool is_texture2d = (Object::cast_to<VisualShaderNodeTexture>(vsnode.ptr()) != nullptr);
+	bool is_texture3d = (Object::cast_to<VisualShaderNodeTexture3D>(vsnode.ptr()) != nullptr);
+	bool is_texture2d_array = (Object::cast_to<VisualShaderNodeTexture2DArray>(vsnode.ptr()) != nullptr);
+	bool is_cubemap = (Object::cast_to<VisualShaderNodeCubemap>(vsnode.ptr()) != nullptr);
+	bool is_curve = (Object::cast_to<VisualShaderNodeCurveTexture>(vsnode.ptr()) != nullptr);
+	bool is_curve_xyz = (Object::cast_to<VisualShaderNodeCurveXYZTexture>(vsnode.ptr()) != nullptr);
+	bool is_uniform = (Object::cast_to<VisualShaderNodeUniform>(vsnode.ptr()) != nullptr);
+
 	Point2 position = graph->get_scroll_ofs();
 
 	if (saved_node_pos_dirty) {
@@ -2570,23 +2578,32 @@ void VisualShaderEditor::_add_node(int p_idx, int p_op_idx, String p_resource_pa
 					}
 				}
 			}
+
+			if (output_port_type == VisualShaderNode::PORT_TYPE_SAMPLER) {
+				if (is_texture2d) {
+					undo_redo->add_do_method(vsnode.ptr(), "set_source", VisualShaderNodeTexture::SOURCE_PORT);
+				}
+				if (is_texture3d || is_texture2d_array) {
+					undo_redo->add_do_method(vsnode.ptr(), "set_source", VisualShaderNodeSample3D::SOURCE_PORT);
+				}
+				if (is_cubemap) {
+					undo_redo->add_do_method(vsnode.ptr(), "set_source", VisualShaderNodeCubemap::SOURCE_PORT);
+				}
+			}
 		}
 	}
 	_member_cancel();
 
-	VisualShaderNodeUniform *uniform = Object::cast_to<VisualShaderNodeUniform>(vsnode.ptr());
-	if (uniform) {
+	if (is_uniform) {
 		undo_redo->add_do_method(this, "_update_uniforms", true);
 		undo_redo->add_undo_method(this, "_update_uniforms", true);
 	}
 
-	VisualShaderNodeCurveTexture *curve = Object::cast_to<VisualShaderNodeCurveTexture>(vsnode.ptr());
-	if (curve) {
+	if (is_curve) {
 		graph_plugin->call_deferred(SNAME("update_curve"), id_to_use);
 	}
 
-	VisualShaderNodeCurveXYZTexture *curve_xyz = Object::cast_to<VisualShaderNodeCurveXYZTexture>(vsnode.ptr());
-	if (curve_xyz) {
+	if (is_curve_xyz) {
 		graph_plugin->call_deferred(SNAME("update_curve_xyz"), id_to_use);
 	}
 
@@ -2595,22 +2612,17 @@ void VisualShaderEditor::_add_node(int p_idx, int p_op_idx, String p_resource_pa
 	} else {
 		//post-initialization
 
-		VisualShaderNodeTexture *texture2d = Object::cast_to<VisualShaderNodeTexture>(vsnode.ptr());
-		VisualShaderNodeTexture3D *texture3d = Object::cast_to<VisualShaderNodeTexture3D>(vsnode.ptr());
-
-		if (texture2d || texture3d || curve || curve_xyz) {
+		if (is_texture2d || is_texture3d || is_curve || is_curve_xyz) {
 			undo_redo->add_do_method(vsnode.ptr(), "set_texture", ResourceLoader::load(p_resource_path));
 			return;
 		}
 
-		VisualShaderNodeCubemap *cubemap = Object::cast_to<VisualShaderNodeCubemap>(vsnode.ptr());
-		if (cubemap) {
+		if (is_cubemap) {
 			undo_redo->add_do_method(vsnode.ptr(), "set_cube_map", ResourceLoader::load(p_resource_path));
 			return;
 		}
 
-		VisualShaderNodeTexture2DArray *texture2d_array = Object::cast_to<VisualShaderNodeTexture2DArray>(vsnode.ptr());
-		if (texture2d_array) {
+		if (is_texture2d_array) {
 			undo_redo->add_do_method(vsnode.ptr(), "set_texture_array", ResourceLoader::load(p_resource_path));
 		}
 	}