diff --git a/servers/rendering/shader_language.cpp b/servers/rendering/shader_language.cpp
index 092ebff79d1..6e4d150ee15 100644
--- a/servers/rendering/shader_language.cpp
+++ b/servers/rendering/shader_language.cpp
@@ -1555,10 +1555,11 @@ bool ShaderLanguage::_find_identifier(const BlockNode *p_block, bool p_allow_rea
 	return false;
 }
 
-bool ShaderLanguage::_validate_operator(const BlockNode *p_block, const FunctionInfo &p_function_info, OperatorNode *p_op, DataType *r_ret_type, int *r_ret_size) {
+bool ShaderLanguage::_validate_operator(const BlockNode *p_block, const FunctionInfo &p_function_info, OperatorNode *p_op, DataType *r_ret_type, int *r_ret_size, StringName *r_ret_struct_name) {
 	bool valid = false;
 	DataType ret_type = TYPE_VOID;
 	int ret_size = 0;
+	String ret_struct_name;
 
 	switch (p_op->op) {
 		case OP_EQUAL:
@@ -2003,7 +2004,23 @@ bool ShaderLanguage::_validate_operator(const BlockNode *p_block, const Function
 			DataType nb = p_op->arguments[1]->get_datatype();
 			DataType nc = p_op->arguments[2]->get_datatype();
 
-			valid = na == TYPE_BOOL && (nb == nc) && !is_sampler_type(nb);
+			bool is_same = false;
+			if (nb == nc) {
+				is_same = true;
+
+				if (nb == TYPE_STRUCT) {
+					String tb = p_op->arguments[1]->get_datatype_name();
+					String tc = p_op->arguments[2]->get_datatype_name();
+
+					if (tb != tc) {
+						break;
+					}
+
+					ret_struct_name = tb;
+				}
+			}
+
+			valid = na == TYPE_BOOL && is_same && !is_sampler_type(nb);
 			ret_type = nb;
 			ret_size = sa;
 		} break;
@@ -2018,6 +2035,9 @@ bool ShaderLanguage::_validate_operator(const BlockNode *p_block, const Function
 	if (r_ret_size) {
 		*r_ret_size = ret_size;
 	}
+	if (r_ret_struct_name) {
+		*r_ret_struct_name = ret_struct_name;
+	}
 
 	if (valid && (!p_block || p_block->use_op_eval)) {
 		// Need to be placed here and not in the `_reduce_expression` because otherwise expressions like `1 + 2 / 2` will not work correctly.
@@ -7699,7 +7719,7 @@ ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, cons
 
 			expression.write[next_op - 1].is_op = false;
 			expression.write[next_op - 1].node = op;
-			if (!_validate_operator(p_block, p_function_info, op, &op->return_cache, &op->return_array_size)) {
+			if (!_validate_operator(p_block, p_function_info, op, &op->return_cache, &op->return_array_size, &op->struct_name)) {
 				if (error_set) {
 					return nullptr;
 				}
@@ -7709,7 +7729,12 @@ ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, cons
 					if (i > 0) {
 						at += ", ";
 					}
-					at += get_datatype_name(op->arguments[i]->get_datatype());
+					DataType dt = op->arguments[i]->get_datatype();
+					if (dt == TYPE_STRUCT) {
+						at += op->arguments[i]->get_datatype_name();
+					} else {
+						at += get_datatype_name(dt);
+					}
 					if (!op->arguments[i]->is_indexed() && op->arguments[i]->get_array_size() > 0) {
 						at += "[";
 						at += itos(op->arguments[i]->get_array_size());
diff --git a/servers/rendering/shader_language.h b/servers/rendering/shader_language.h
index fed8550ab96..ce9244d9528 100644
--- a/servers/rendering/shader_language.h
+++ b/servers/rendering/shader_language.h
@@ -1132,7 +1132,7 @@ private:
 #endif // DEBUG_ENABLED
 	bool _is_operator_assign(Operator p_op) const;
 	bool _validate_assign(Node *p_node, const FunctionInfo &p_function_info, String *r_message = nullptr);
-	bool _validate_operator(const BlockNode *p_block, const FunctionInfo &p_function_info, OperatorNode *p_op, DataType *r_ret_type = nullptr, int *r_ret_size = nullptr);
+	bool _validate_operator(const BlockNode *p_block, const FunctionInfo &p_function_info, OperatorNode *p_op, DataType *r_ret_type = nullptr, int *r_ret_size = nullptr, StringName *r_ret_struct_name = nullptr);
 
 	Vector<Scalar> _get_node_values(const BlockNode *p_block, const FunctionInfo &p_function_info, Node *p_node);
 	bool _eval_operator(const BlockNode *p_block, const FunctionInfo &p_function_info, OperatorNode *p_op);