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Diffstat (limited to 'modules/openxr/extensions/openxr_composition_layer_extension.h')
| -rw-r--r-- | modules/openxr/extensions/openxr_composition_layer_extension.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/modules/openxr/extensions/openxr_composition_layer_extension.h b/modules/openxr/extensions/openxr_composition_layer_extension.h new file mode 100644 index 0000000000..7cc35005f8 --- /dev/null +++ b/modules/openxr/extensions/openxr_composition_layer_extension.h @@ -0,0 +1,112 @@ +/**************************************************************************/ +/* openxr_composition_layer_extension.h */ +/**************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/**************************************************************************/ +/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */ +/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ +/* */ +/* 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_COMPOSITION_LAYER_EXTENSION_H +#define OPENXR_COMPOSITION_LAYER_EXTENSION_H + +#include "openxr_composition_layer_provider.h" +#include "openxr_extension_wrapper.h" + +#include "../openxr_api.h" + +class OpenXRViewportCompositionLayerProvider; + +// This extension provides access to composition layers for displaying 2D content through the XR compositor. + +// OpenXRCompositionLayerExtension enables the extensions related to this functionality +class OpenXRCompositionLayerExtension : public OpenXRExtensionWrapper, public OpenXRCompositionLayerProvider { +public: + static OpenXRCompositionLayerExtension *get_singleton(); + + OpenXRCompositionLayerExtension(); + virtual ~OpenXRCompositionLayerExtension() override; + + virtual HashMap<String, bool *> get_requested_extensions() override; + virtual void on_session_created(const XrSession p_instance) override; + virtual void on_session_destroyed() override; + virtual void on_pre_render() override; + + virtual int get_composition_layer_count() override; + virtual XrCompositionLayerBaseHeader *get_composition_layer(int p_index) override; + virtual int get_composition_layer_order(int p_index) override; + + void register_composition_layer_provider(OpenXRViewportCompositionLayerProvider *p_composition_layer); + void unregister_composition_layer_provider(OpenXRViewportCompositionLayerProvider *p_composition_layer); + + bool is_available(XrStructureType p_which); + +private: + static OpenXRCompositionLayerExtension *singleton; + + Vector<OpenXRViewportCompositionLayerProvider *> composition_layers; + + bool cylinder_ext_available = false; + bool equirect_ext_available = false; +}; + +class OpenXRViewportCompositionLayerProvider { + XrCompositionLayerBaseHeader *composition_layer = nullptr; + int sort_order = 1; + bool alpha_blend = false; + + RID viewport; + Size2i viewport_size; + + OpenXRAPI::OpenXRSwapChainInfo swapchain_info; + Size2i swapchain_size; + bool static_image = false; + + OpenXRAPI *openxr_api = nullptr; + OpenXRCompositionLayerExtension *composition_layer_extension = nullptr; + + bool update_and_acquire_swapchain(bool p_static_image); + void free_swapchain(); + RID get_current_swapchain_texture(); + +public: + XrStructureType get_openxr_type() { return composition_layer->type; } + + void set_sort_order(int p_sort_order) { sort_order = p_sort_order; } + int get_sort_order() const { return sort_order; } + + void set_alpha_blend(bool p_alpha_blend); + bool get_alpha_blend() const { return alpha_blend; } + + void set_viewport(RID p_viewport, Size2i p_size); + RID get_viewport() const { return viewport; } + + void on_pre_render(); + XrCompositionLayerBaseHeader *get_composition_layer(); + + OpenXRViewportCompositionLayerProvider(XrCompositionLayerBaseHeader *p_composition_layer); + ~OpenXRViewportCompositionLayerProvider(); +}; + +#endif // OPENXR_COMPOSITION_LAYER_EXTENSION_H |