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Diffstat (limited to 'modules/openxr/extensions/openxr_fb_foveation_extension.h')
| -rw-r--r-- | modules/openxr/extensions/openxr_fb_foveation_extension.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/modules/openxr/extensions/openxr_fb_foveation_extension.h b/modules/openxr/extensions/openxr_fb_foveation_extension.h new file mode 100644 index 0000000000..1c5e722731 --- /dev/null +++ b/modules/openxr/extensions/openxr_fb_foveation_extension.h @@ -0,0 +1,96 @@ +/**************************************************************************/ +/* openxr_fb_foveation_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_FB_FOVEATION_EXTENSION_H +#define OPENXR_FB_FOVEATION_EXTENSION_H + +// This extension implements the FB Foveation extension. +// This is an extension Meta added due to VRS being unavailable on Android. +// Other Android based devices are implementing this as well, see: +// https://github.khronos.org/OpenXR-Inventory/extension_support.html#XR_FB_foveation + +// Note: Currently we only support this for OpenGL. +// This extension works on enabling foveated rendering on the swapchain. +// Vulkan does not render 3D content directly to the swapchain image +// hence this extension can't be used. + +#include "../openxr_api.h" +#include "../util.h" +#include "openxr_extension_wrapper.h" +#include "openxr_fb_update_swapchain_extension.h" + +class OpenXRFBFoveationExtension : public OpenXRExtensionWrapper { +public: + static OpenXRFBFoveationExtension *get_singleton(); + + OpenXRFBFoveationExtension(const String &p_rendering_driver); + virtual ~OpenXRFBFoveationExtension() override; + + virtual HashMap<String, bool *> get_requested_extensions() override; + + virtual void on_instance_created(const XrInstance p_instance) override; + virtual void on_instance_destroyed() override; + + virtual void *set_swapchain_create_info_and_get_next_pointer(void *p_next_pointer) override; + + virtual void on_state_ready() override; + + bool is_enabled() const; + + XrFoveationLevelFB get_foveation_level() const; + void set_foveation_level(XrFoveationLevelFB p_foveation_level); + + XrFoveationDynamicFB get_foveation_dynamic() const; + void set_foveation_dynamic(XrFoveationDynamicFB p_foveation_dynamic); + +private: + static OpenXRFBFoveationExtension *singleton; + + // Setup + String rendering_driver; + bool fb_foveation_ext = false; + bool fb_foveation_configuration_ext = false; + + // Configuration + XrFoveationLevelFB foveation_level = XR_FOVEATION_LEVEL_NONE_FB; + XrFoveationDynamicFB foveation_dynamic = XR_FOVEATION_DYNAMIC_DISABLED_FB; + + void update_profile(); + + // Enable foveation on this swapchain + XrSwapchainCreateInfoFoveationFB swapchain_create_info_foveation_fb; + OpenXRFBUpdateSwapchainExtension *swapchain_update_state_ext = nullptr; + + // OpenXR API call wrappers + EXT_PROTO_XRRESULT_FUNC3(xrCreateFoveationProfileFB, (XrSession), session, (const XrFoveationProfileCreateInfoFB *), create_info, (XrFoveationProfileFB *), profile); + EXT_PROTO_XRRESULT_FUNC1(xrDestroyFoveationProfileFB, (XrFoveationProfileFB), profile); +}; + +#endif // OPENXR_FB_FOVEATION_EXTENSION_H |