113 lines
4.9 KiB
C++
113 lines
4.9 KiB
C++
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/**************************************************************************/
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/* openxr_composition_layer_extension.h */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#ifndef OPENXR_COMPOSITION_LAYER_EXTENSION_H
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#define OPENXR_COMPOSITION_LAYER_EXTENSION_H
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#include "openxr_composition_layer_provider.h"
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#include "openxr_extension_wrapper.h"
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#include "../openxr_api.h"
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class OpenXRViewportCompositionLayerProvider;
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// This extension provides access to composition layers for displaying 2D content through the XR compositor.
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// OpenXRCompositionLayerExtension enables the extensions related to this functionality
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class OpenXRCompositionLayerExtension : public OpenXRExtensionWrapper, public OpenXRCompositionLayerProvider {
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public:
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static OpenXRCompositionLayerExtension *get_singleton();
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OpenXRCompositionLayerExtension();
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virtual ~OpenXRCompositionLayerExtension() override;
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virtual HashMap<String, bool *> get_requested_extensions() override;
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virtual void on_session_created(const XrSession p_instance) override;
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virtual void on_session_destroyed() override;
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virtual void on_pre_render() override;
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virtual int get_composition_layer_count() override;
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virtual XrCompositionLayerBaseHeader *get_composition_layer(int p_index) override;
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virtual int get_composition_layer_order(int p_index) override;
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void register_composition_layer_provider(OpenXRViewportCompositionLayerProvider *p_composition_layer);
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void unregister_composition_layer_provider(OpenXRViewportCompositionLayerProvider *p_composition_layer);
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bool is_available(XrStructureType p_which);
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private:
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static OpenXRCompositionLayerExtension *singleton;
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Vector<OpenXRViewportCompositionLayerProvider *> composition_layers;
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bool cylinder_ext_available = false;
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bool equirect_ext_available = false;
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};
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class OpenXRViewportCompositionLayerProvider {
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XrCompositionLayerBaseHeader *composition_layer = nullptr;
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int sort_order = 1;
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bool alpha_blend = false;
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RID viewport;
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Size2i viewport_size;
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OpenXRAPI::OpenXRSwapChainInfo swapchain_info;
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Size2i swapchain_size;
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bool static_image = false;
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OpenXRAPI *openxr_api = nullptr;
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OpenXRCompositionLayerExtension *composition_layer_extension = nullptr;
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bool update_and_acquire_swapchain(bool p_static_image);
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void free_swapchain();
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RID get_current_swapchain_texture();
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public:
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XrStructureType get_openxr_type() { return composition_layer->type; }
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void set_sort_order(int p_sort_order) { sort_order = p_sort_order; }
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int get_sort_order() const { return sort_order; }
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void set_alpha_blend(bool p_alpha_blend);
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bool get_alpha_blend() const { return alpha_blend; }
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void set_viewport(RID p_viewport, Size2i p_size);
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RID get_viewport() const { return viewport; }
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void on_pre_render();
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XrCompositionLayerBaseHeader *get_composition_layer();
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OpenXRViewportCompositionLayerProvider(XrCompositionLayerBaseHeader *p_composition_layer);
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~OpenXRViewportCompositionLayerProvider();
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};
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#endif // OPENXR_COMPOSITION_LAYER_EXTENSION_H
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