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/*************************************************************************/
/* openxr_extension_wrapper.h */
/*************************************************************************/
/* 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. */
/*************************************************************************/
#ifndef OPENXR_EXTENSION_WRAPPER_H
#define OPENXR_EXTENSION_WRAPPER_H
#include "core/error/error_macros.h"
#include "core/math/projection.h"
#include "core/templates/hash_map.h"
#include "core/templates/rid.h"
#include "thirdparty/openxr/src/common/xr_linear.h"
#include <openxr/openxr.h>
class OpenXRAPI;
class OpenXRActionMap;
class OpenXRExtensionWrapper {
protected:
OpenXRAPI *openxr_api = nullptr;
// Store extension we require.
// If bool pointer is a nullptr this means this extension is mandatory and initialisation will fail if it is not available
// If bool pointer is set, value will be set to true or false depending on whether extension is available
HashMap<String, bool *> request_extensions;
public:
virtual HashMap<String, bool *> get_request_extensions() {
return request_extensions;
}
// These functions allow an extension to add entries to a struct chain.
// `p_next_pointer` points to the last struct that was created for this chain
// and should be used as the value for the `pNext` pointer in the first struct you add.
// You should return the pointer to the last struct you define as your result.
// If you are not adding any structs, just return `p_next_pointer`.
// See existing extensions for examples of this implementation.
virtual void *set_system_properties_and_get_next_pointer(void *p_next_pointer) { return p_next_pointer; }
virtual void *set_session_create_and_get_next_pointer(void *p_next_pointer) { return p_next_pointer; }
virtual void *set_swapchain_create_info_and_get_next_pointer(void *p_next_pointer) { return p_next_pointer; }
virtual void on_before_instance_created() {}
virtual void on_instance_created(const XrInstance p_instance) {}
virtual void on_instance_destroyed() {}
virtual void on_session_created(const XrSession p_instance) {}
virtual void on_process() {}
virtual void on_pre_render() {}
virtual void on_session_destroyed() {}
virtual void on_state_idle() {}
virtual void on_state_ready() {}
virtual void on_state_synchronized() {}
virtual void on_state_visible() {}
virtual void on_state_focused() {}
virtual void on_state_stopping() {}
virtual void on_state_loss_pending() {}
virtual void on_state_exiting() {}
// Returns true if the event was handled, false otherwise.
virtual bool on_event_polled(const XrEventDataBuffer &event) {
return false;
}
// Return false if this extension is responsible for this path but the path is not enabled
virtual bool is_path_supported(const String &p_path) {
return true;
}
OpenXRExtensionWrapper(OpenXRAPI *p_openxr_api) { openxr_api = p_openxr_api; };
virtual ~OpenXRExtensionWrapper() = default;
};
class OpenXRGraphicsExtensionWrapper : public OpenXRExtensionWrapper {
public:
virtual void get_usable_swapchain_formats(Vector<int64_t> &p_usable_swap_chains) = 0;
virtual String get_swapchain_format_name(int64_t p_swapchain_format) const = 0;
virtual bool get_swapchain_image_data(XrSwapchain p_swapchain, int64_t p_swapchain_format, uint32_t p_width, uint32_t p_height, uint32_t p_sample_count, uint32_t p_array_size, void **r_swapchain_graphics_data) = 0;
virtual void cleanup_swapchain_graphics_data(void **p_swapchain_graphics_data) = 0;
virtual bool create_projection_fov(const XrFovf p_fov, double p_z_near, double p_z_far, Projection &r_camera_matrix) = 0;
virtual bool copy_render_target_to_image(RID p_from_render_target, void *p_swapchain_graphics_data, int p_image_index) = 0;
OpenXRGraphicsExtensionWrapper(OpenXRAPI *p_openxr_api) :
OpenXRExtensionWrapper(p_openxr_api){};
};
#endif // OPENXR_EXTENSION_WRAPPER_H
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