Implementing OpenXR driver

1 files changed, 71 insertions, 0 deletions

diff --git a/modules/openxr/extensions/openxr_android_extension.cpp b/modules/openxr/extensions/openxr_android_extension.cpp
new file mode 100644
index 0000000000..3bd4db169c
--- /dev/null
+++ b/modules/openxr/extensions/openxr_android_extension.cpp
@@ -0,0 +1,71 @@
+/*************************************************************************/
+/*  openxr_android_extension.cpp                                         */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "openxr_android_extension.h"
+
+#include <openxr/openxr.h>
+#include <openxr/openxr_platform.h>
+
+OpenXRAndroidExtension *OpenXRAndroidExtension::singleton = nullptr;
+
+OpenXRAndroidExtension *OpenXRAndroidExtension::get_singleton() {
+	return singleton;
+}
+
+OpenXRAndroidExtension::OpenXRAndroidExtension(OpenXRAPI *p_openxr_api) :
+		OpenXRExtensionWrapper(p_openxr_api) {
+	singleton = this;
+
+	request_extensions[XR_KHR_ANDROID_THREAD_SETTINGS_EXTENSION_NAME] = nullptr; // must be available
+
+	// Initialize the loader
+	PFN_xrInitializeLoaderKHR xrInitializeLoaderKHR;
+	result = xrGetInstanceProcAddr(XR_NULL_HANDLE, "xrInitializeLoaderKHR", (PFN_xrVoidFunction *)(&xrInitializeLoaderKHR));
+	ERR_FAIL_COND_MSG(XR_FAILED(result), "Failed to retrieve pointer to xrInitializeLoaderKHR");
+
+	// TODO fix this code, this is still code from GDNative!
+	JNIEnv *env = android_api->godot_android_get_env();
+	JavaVM *vm;
+	env->GetJavaVM(&vm);
+	jobject activity_object = env->NewGlobalRef(android_api->godot_android_get_activity());
+
+	XrLoaderInitInfoAndroidKHR loader_init_info_android = {
+		.type = XR_TYPE_LOADER_INIT_INFO_ANDROID_KHR,
+		.next = nullptr,
+		.applicationVM = vm,
+		.applicationContext = activity_object
+	};
+	xrInitializeLoaderKHR((const XrLoaderInitInfoBaseHeaderKHR *)&loader_init_info_android);
+	ERR_FAIL_COND_MSG(XR_FAILED(result), "Failed to call xrInitializeLoaderKHR");
+}
+
+OpenXRAndroidExtension::~OpenXRAndroidExtension() {
+	singleton = nullptr;
+}