diff options
Diffstat (limited to 'modules/openxr/extensions/openxr_fb_foveation_extension.cpp')
| -rw-r--r-- | modules/openxr/extensions/openxr_fb_foveation_extension.cpp | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/modules/openxr/extensions/openxr_fb_foveation_extension.cpp b/modules/openxr/extensions/openxr_fb_foveation_extension.cpp new file mode 100644 index 0000000000..7277f85b12 --- /dev/null +++ b/modules/openxr/extensions/openxr_fb_foveation_extension.cpp @@ -0,0 +1,168 @@ +/**************************************************************************/ +/* openxr_fb_foveation_extension.cpp */ +/**************************************************************************/ +/* 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. */ +/**************************************************************************/ + +#include "openxr_fb_foveation_extension.h" +#include "core/config/project_settings.h" + +OpenXRFBFoveationExtension *OpenXRFBFoveationExtension::singleton = nullptr; + +OpenXRFBFoveationExtension *OpenXRFBFoveationExtension::get_singleton() { + return singleton; +} + +OpenXRFBFoveationExtension::OpenXRFBFoveationExtension(const String &p_rendering_driver) { + singleton = this; + rendering_driver = p_rendering_driver; + swapchain_update_state_ext = OpenXRFBUpdateSwapchainExtension::get_singleton(); + int fov_level = GLOBAL_GET("xr/openxr/foveation_level"); + if (fov_level >= 0 && fov_level < 4) { + foveation_level = XrFoveationLevelFB(fov_level); + } + bool fov_dyn = GLOBAL_GET("xr/openxr/foveation_dynamic"); + foveation_dynamic = fov_dyn ? XR_FOVEATION_DYNAMIC_LEVEL_ENABLED_FB : XR_FOVEATION_DYNAMIC_DISABLED_FB; + + swapchain_create_info_foveation_fb.type = XR_TYPE_SWAPCHAIN_CREATE_INFO_FOVEATION_FB; + swapchain_create_info_foveation_fb.next = nullptr; + swapchain_create_info_foveation_fb.flags = 0; +} + +OpenXRFBFoveationExtension::~OpenXRFBFoveationExtension() { + singleton = nullptr; + swapchain_update_state_ext = nullptr; +} + +HashMap<String, bool *> OpenXRFBFoveationExtension::get_requested_extensions() { + HashMap<String, bool *> request_extensions; + + if (rendering_driver == "vulkan") { + // This is currently only supported on OpenGL, but we may add Vulkan support in the future... + + } else if (rendering_driver == "opengl3") { + request_extensions[XR_FB_FOVEATION_EXTENSION_NAME] = &fb_foveation_ext; + request_extensions[XR_FB_FOVEATION_CONFIGURATION_EXTENSION_NAME] = &fb_foveation_configuration_ext; + } + + return request_extensions; +} + +void OpenXRFBFoveationExtension::on_instance_created(const XrInstance p_instance) { + if (fb_foveation_ext) { + EXT_INIT_XR_FUNC(xrCreateFoveationProfileFB); + EXT_INIT_XR_FUNC(xrDestroyFoveationProfileFB); + } + + if (fb_foveation_configuration_ext) { + // nothing to register here... + } +} + +void OpenXRFBFoveationExtension::on_instance_destroyed() { + fb_foveation_ext = false; + fb_foveation_configuration_ext = false; +} + +bool OpenXRFBFoveationExtension::is_enabled() const { + return swapchain_update_state_ext != nullptr && swapchain_update_state_ext->is_enabled() && fb_foveation_ext && fb_foveation_configuration_ext; +} + +void *OpenXRFBFoveationExtension::set_swapchain_create_info_and_get_next_pointer(void *p_next_pointer) { + if (is_enabled()) { + swapchain_create_info_foveation_fb.next = p_next_pointer; + return &swapchain_create_info_foveation_fb; + } else { + return p_next_pointer; + } +} + +void OpenXRFBFoveationExtension::on_state_ready() { + update_profile(); +} + +XrFoveationLevelFB OpenXRFBFoveationExtension::get_foveation_level() const { + return foveation_level; +} + +void OpenXRFBFoveationExtension::set_foveation_level(XrFoveationLevelFB p_foveation_level) { + foveation_level = p_foveation_level; + + // Update profile will do nothing if we're not yet initialised + update_profile(); +} + +XrFoveationDynamicFB OpenXRFBFoveationExtension::get_foveation_dynamic() const { + return foveation_dynamic; +} + +void OpenXRFBFoveationExtension::set_foveation_dynamic(XrFoveationDynamicFB p_foveation_dynamic) { + foveation_dynamic = p_foveation_dynamic; + + // Update profile will do nothing if we're not yet initialised + update_profile(); +} + +void OpenXRFBFoveationExtension::update_profile() { + if (!is_enabled()) { + return; + } + + XrFoveationLevelProfileCreateInfoFB level_profile_create_info; + level_profile_create_info.type = XR_TYPE_FOVEATION_LEVEL_PROFILE_CREATE_INFO_FB; + level_profile_create_info.next = nullptr; + level_profile_create_info.level = foveation_level; + level_profile_create_info.verticalOffset = 0.0f; + level_profile_create_info.dynamic = foveation_dynamic; + + XrFoveationProfileCreateInfoFB profile_create_info; + profile_create_info.type = XR_TYPE_FOVEATION_PROFILE_CREATE_INFO_FB; + profile_create_info.next = &level_profile_create_info; + + XrFoveationProfileFB foveation_profile; + XrResult result = xrCreateFoveationProfileFB(OpenXRAPI::get_singleton()->get_session(), &profile_create_info, &foveation_profile); + if (XR_FAILED(result)) { + print_line("OpenXR: Unable to create the foveation profile [", OpenXRAPI::get_singleton()->get_error_string(result), "]"); + return; + } + + XrSwapchainStateFoveationFB foveation_update_state; + foveation_update_state.type = XR_TYPE_SWAPCHAIN_STATE_FOVEATION_FB; + foveation_update_state.profile = foveation_profile; + + result = swapchain_update_state_ext->xrUpdateSwapchainFB(OpenXRAPI::get_singleton()->get_color_swapchain(), (XrSwapchainStateBaseHeaderFB *)&foveation_update_state); + if (XR_FAILED(result)) { + print_line("OpenXR: Unable to update the swapchain [", OpenXRAPI::get_singleton()->get_error_string(result), "]"); + + // We still want to destroy our profile so keep going... + } + + result = xrDestroyFoveationProfileFB(foveation_profile); + if (XR_FAILED(result)) { + print_line("OpenXR: Unable to destroy the foveation profile [", OpenXRAPI::get_singleton()->get_error_string(result), "]"); + } +} |