OpenXR: Expose view information to GDExtension API

View count and XrViewConfigurationType are relevant for various core
OpenXR functions and extensions. This commit makes them accessible
via the GDExtension API.

modules/openxr/doc_classes/OpenXRAPIExtension.xml

@@ -149,6 +149,18 @@
 				Returns the ID of the system, which is an [url=https://registry.khronos.org/OpenXR/specs/1.0/man/html/XrSystemId.html]XrSystemId[/url] cast to an integer.
 			</description>
 		</method>
+		<method name="get_view_configuration" qualifiers="const">
+			<return type="int" />
+			<description>
+				Returns the view configuration type, which is an [url=https://registry.khronos.org/OpenXR/specs/1.0/man/html/XrViewConfigurationType.html]XrViewConfigurationType[/url] cast to an integer.
+			</description>
+		</method>
+		<method name="get_view_count" qualifiers="const">
+			<return type="int" />
+			<description>
+				Returns the number of views. It is usually two, one for each eye, but may differ with different view configurations.
+			</description>
+		</method>
 		<method name="insert_debug_label">
 			<return type="void" />
 			<param index="0" name="label_name" type="String" />

modules/openxr/openxr_api.cpp

@@ -1561,7 +1561,7 @@ void OpenXRAPI::set_form_factor(XrFormFactor p_form_factor) {
 	form_factor = p_form_factor;
 }
 
-uint32_t OpenXRAPI::get_view_count() {
+uint32_t OpenXRAPI::get_view_count() const {
 	return view_configuration_views.size();
 }
 

modules/openxr/openxr_api.h

@@ -502,7 +502,7 @@ public:
 	void set_form_factor(XrFormFactor p_form_factor);
 	XrFormFactor get_form_factor() const { return form_factor; }
 
-	uint32_t get_view_count();
+	uint32_t get_view_count() const;
 	void set_view_configuration(XrViewConfigurationType p_view_configuration);
 	XrViewConfigurationType get_view_configuration() const { return view_configuration; }
 

modules/openxr/openxr_api_extension.cpp

@@ -50,6 +50,9 @@ void OpenXRAPIExtension::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("end_debug_label_region"), &OpenXRAPIExtension::end_debug_label_region);
 	ClassDB::bind_method(D_METHOD("insert_debug_label", "label_name"), &OpenXRAPIExtension::insert_debug_label);
 
+	ClassDB::bind_method(D_METHOD("get_view_count"), &OpenXRAPIExtension::get_view_count);
+	ClassDB::bind_method(D_METHOD("get_view_configuration"), &OpenXRAPIExtension::get_view_configuration);
+
 	ClassDB::bind_method(D_METHOD("is_initialized"), &OpenXRAPIExtension::is_initialized);
 	ClassDB::bind_method(D_METHOD("is_running"), &OpenXRAPIExtension::is_running);
 
@@ -183,6 +186,16 @@ void OpenXRAPIExtension::insert_debug_label(const String &p_label_name) {
 	OpenXRAPI::get_singleton()->insert_debug_label(p_label_name);
 }
 
+uint32_t OpenXRAPIExtension::get_view_count() const {
+	ERR_FAIL_NULL_V(OpenXRAPI::get_singleton(), 0);
+	return (uint32_t)OpenXRAPI::get_singleton()->get_view_count();
+}
+
+uint64_t OpenXRAPIExtension::get_view_configuration() const {
+	ERR_FAIL_NULL_V(OpenXRAPI::get_singleton(), 0);
+	return (uint64_t)OpenXRAPI::get_singleton()->get_view_configuration();
+}
+
 bool OpenXRAPIExtension::is_initialized() {
 	ERR_FAIL_NULL_V(OpenXRAPI::get_singleton(), false);
 	return OpenXRAPI::get_singleton()->is_initialized();

modules/openxr/openxr_api_extension.h

@@ -77,6 +77,9 @@ public:
 	void end_debug_label_region();
 	void insert_debug_label(const String &p_label_name);
 
+	uint32_t get_view_count() const;
+	uint64_t get_view_configuration() const;
+
 	bool is_initialized();
 	bool is_running();