104 lines
5 KiB
C++
104 lines
5 KiB
C++
/**************************************************************************/
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/* openxr_fb_foveation_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_FB_FOVEATION_EXTENSION_H
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#define OPENXR_FB_FOVEATION_EXTENSION_H
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// This extension implements the FB Foveation extension.
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// This is an extension Meta added due to VRS being unavailable on Android.
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// Other Android based devices are implementing this as well, see:
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// https://github.khronos.org/OpenXR-Inventory/extension_support.html#XR_FB_foveation
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// Note: Currently we only support this for OpenGL.
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// This extension works on enabling foveated rendering on the swapchain.
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// Vulkan does not render 3D content directly to the swapchain image
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// hence this extension can't be used.
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#include "../openxr_api.h"
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#include "../util.h"
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#include "openxr_extension_wrapper.h"
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#include "openxr_fb_update_swapchain_extension.h"
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class OpenXRFBFoveationExtension : public OpenXRExtensionWrapper {
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public:
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static OpenXRFBFoveationExtension *get_singleton();
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OpenXRFBFoveationExtension(const String &p_rendering_driver);
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virtual ~OpenXRFBFoveationExtension() 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_instance_destroyed() override;
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virtual void *set_swapchain_create_info_and_get_next_pointer(void *p_next_pointer) override;
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virtual void on_main_swapchains_created() override;
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bool is_enabled() const;
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XrFoveationLevelFB get_foveation_level() const;
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void set_foveation_level(XrFoveationLevelFB p_foveation_level);
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XrFoveationDynamicFB get_foveation_dynamic() const;
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void set_foveation_dynamic(XrFoveationDynamicFB p_foveation_dynamic);
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private:
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static OpenXRFBFoveationExtension *singleton;
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// Setup
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String rendering_driver;
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bool fb_foveation_ext = false;
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bool fb_foveation_configuration_ext = false;
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// Configuration
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XrFoveationLevelFB foveation_level = XR_FOVEATION_LEVEL_NONE_FB;
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XrFoveationDynamicFB foveation_dynamic = XR_FOVEATION_DYNAMIC_DISABLED_FB;
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static void _update_profile();
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void update_profile() {
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// If we're rendering on a separate thread, we may still be processing the last frame, don't communicate this till we're ready...
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RenderingServer *rendering_server = RenderingServer::get_singleton();
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ERR_FAIL_NULL(rendering_server);
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rendering_server->call_on_render_thread(callable_mp_static(&OpenXRFBFoveationExtension::_update_profile));
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}
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// Enable foveation on this swapchain
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XrSwapchainCreateInfoFoveationFB swapchain_create_info_foveation_fb;
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OpenXRFBUpdateSwapchainExtension *swapchain_update_state_ext = nullptr;
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// OpenXR API call wrappers
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EXT_PROTO_XRRESULT_FUNC3(xrCreateFoveationProfileFB, (XrSession), session, (const XrFoveationProfileCreateInfoFB *), create_info, (XrFoveationProfileFB *), profile);
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EXT_PROTO_XRRESULT_FUNC1(xrDestroyFoveationProfileFB, (XrFoveationProfileFB), profile);
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};
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#endif // OPENXR_FB_FOVEATION_EXTENSION_H
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