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https://github.com/godotengine/godot
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96 lines
4.2 KiB
C++
96 lines
4.2 KiB
C++
/**************************************************************************/
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/* openxr_visibility_mask_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_VISIBILITY_MASK_EXTENSION_H
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#define OPENXR_VISIBILITY_MASK_EXTENSION_H
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#include "../util.h"
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#include "core/templates/vector.h"
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#include "openxr_extension_wrapper.h"
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#include "scene/resources/mesh.h"
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// The OpenXR visibility mask extension provides a mesh for each eye that
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// can be used as a mask to determine which part of our rendered result
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// is actually visible to the user. Due to lens distortion the edges of
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// the rendered image are never used in the final result output on the HMD.
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//
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// Blacking out this are of the render result can remove a fair amount of
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// overhead in rendering part of the screen that is unused.
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//
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// https://registry.khronos.org/OpenXR/specs/1.0/html/xrspec.html#XR_KHR_visibility_mask
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class OpenXRVisibilityMaskExtension : public OpenXRExtensionWrapper {
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public:
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static OpenXRVisibilityMaskExtension *get_singleton();
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OpenXRVisibilityMaskExtension();
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virtual ~OpenXRVisibilityMaskExtension() override;
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virtual HashMap<String, bool *> get_requested_extensions() override;
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virtual void on_instance_created(const XrInstance p_instance) 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 bool on_event_polled(const XrEventDataBuffer &event) override;
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bool is_available();
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RID get_mesh();
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private:
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static OpenXRVisibilityMaskExtension *singleton;
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bool available = false;
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bool is_dirty = false;
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RID shader;
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RID material;
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RID mesh;
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struct MeshData {
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Vector<XrVector2f> vertices;
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Vector<uint32_t> indices;
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};
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uint32_t mesh_count = 0;
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MeshData mesh_data[4];
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void _update_mesh_data(uint32_t p_view);
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void _update_mesh();
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// OpenXR API call wrappers
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EXT_PROTO_XRRESULT_FUNC5(xrGetVisibilityMaskKHR, (XrSession), session, (XrViewConfigurationType), viewConfigurationType, (uint32_t), viewIndex, (XrVisibilityMaskTypeKHR), visibilityMaskType, (XrVisibilityMaskKHR *), visibilityMask);
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};
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#endif // OPENXR_VISIBILITY_MASK_EXTENSION_H
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