From e14717bb2e1687093d4ac6f9bc06ea79ae0bd2fb Mon Sep 17 00:00:00 2001 From: Bastiaan Olij Date: Mon, 10 Oct 2022 18:51:53 +1100 Subject: Adding support for the OpenXR Display Refresh Rate extension --- .../openxr_fb_display_refresh_rate_extension.cpp | 123 +++++++++++++++++++++ .../openxr_fb_display_refresh_rate_extension.h | 70 ++++++++++++ 2 files changed, 193 insertions(+) create mode 100644 modules/openxr/extensions/openxr_fb_display_refresh_rate_extension.cpp create mode 100644 modules/openxr/extensions/openxr_fb_display_refresh_rate_extension.h (limited to 'modules/openxr/extensions') diff --git a/modules/openxr/extensions/openxr_fb_display_refresh_rate_extension.cpp b/modules/openxr/extensions/openxr_fb_display_refresh_rate_extension.cpp new file mode 100644 index 0000000000..c0bbaea5b4 --- /dev/null +++ b/modules/openxr/extensions/openxr_fb_display_refresh_rate_extension.cpp @@ -0,0 +1,123 @@ +/*************************************************************************/ +/* openxr_fb_display_refresh_rate_extension.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */ +/* */ +/* 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_display_refresh_rate_extension.h" + +OpenXRDisplayRefreshRateExtension *OpenXRDisplayRefreshRateExtension::singleton = nullptr; + +OpenXRDisplayRefreshRateExtension *OpenXRDisplayRefreshRateExtension::get_singleton() { + return singleton; +} + +OpenXRDisplayRefreshRateExtension::OpenXRDisplayRefreshRateExtension(OpenXRAPI *p_openxr_api) : + OpenXRExtensionWrapper(p_openxr_api) { + singleton = this; + + // Extensions we use for our hand tracking. + request_extensions[XR_FB_DISPLAY_REFRESH_RATE_EXTENSION_NAME] = &display_refresh_rate_ext; +} + +OpenXRDisplayRefreshRateExtension::~OpenXRDisplayRefreshRateExtension() { + display_refresh_rate_ext = false; +} + +void OpenXRDisplayRefreshRateExtension::on_instance_created(const XrInstance p_instance) { + if (display_refresh_rate_ext) { + EXT_INIT_XR_FUNC(xrEnumerateDisplayRefreshRatesFB); + EXT_INIT_XR_FUNC(xrGetDisplayRefreshRateFB); + EXT_INIT_XR_FUNC(xrRequestDisplayRefreshRateFB); + } +} + +void OpenXRDisplayRefreshRateExtension::on_instance_destroyed() { + display_refresh_rate_ext = false; +} + +float OpenXRDisplayRefreshRateExtension::get_refresh_rate() const { + float refresh_rate = 0.0; + + if (display_refresh_rate_ext) { + float rate; + XrResult result = xrGetDisplayRefreshRateFB(openxr_api->get_session(), &rate); + if (XR_FAILED(result)) { + print_line("OpenXR: Failed to obtain refresh rate [", openxr_api->get_error_string(result), "]"); + } else { + refresh_rate = rate; + } + } + + return refresh_rate; +} + +void OpenXRDisplayRefreshRateExtension::set_refresh_rate(float p_refresh_rate) { + if (display_refresh_rate_ext) { + XrResult result = xrRequestDisplayRefreshRateFB(openxr_api->get_session(), p_refresh_rate); + if (XR_FAILED(result)) { + print_line("OpenXR: Failed to set refresh rate [", openxr_api->get_error_string(result), "]"); + } + } +} + +Array OpenXRDisplayRefreshRateExtension::get_available_refresh_rates() const { + Array arr; + XrResult result; + + if (display_refresh_rate_ext) { + uint32_t display_refresh_rate_count = 0; + result = xrEnumerateDisplayRefreshRatesFB(openxr_api->get_session(), 0, &display_refresh_rate_count, nullptr); + if (XR_FAILED(result)) { + print_line("OpenXR: Failed to obtain refresh rates count [", openxr_api->get_error_string(result), "]"); + } + + if (display_refresh_rate_count > 0) { + float *display_refresh_rates = (float *)memalloc(sizeof(float) * display_refresh_rate_count); + if (display_refresh_rates == nullptr) { + print_line("OpenXR: Failed to obtain refresh rates memory buffer [", openxr_api->get_error_string(result), "]"); + return arr; + } + + result = xrEnumerateDisplayRefreshRatesFB(openxr_api->get_session(), display_refresh_rate_count, &display_refresh_rate_count, display_refresh_rates); + if (XR_FAILED(result)) { + print_line("OpenXR: Failed to obtain refresh rates count [", openxr_api->get_error_string(result), "]"); + memfree(display_refresh_rates); + return arr; + } + + for (uint32_t i = 0; i < display_refresh_rate_count; i++) { + float refresh_rate = display_refresh_rates[i]; + arr.push_back(Variant(refresh_rate)); + } + + memfree(display_refresh_rates); + } + } + + return arr; +} diff --git a/modules/openxr/extensions/openxr_fb_display_refresh_rate_extension.h b/modules/openxr/extensions/openxr_fb_display_refresh_rate_extension.h new file mode 100644 index 0000000000..dcd52fe4d1 --- /dev/null +++ b/modules/openxr/extensions/openxr_fb_display_refresh_rate_extension.h @@ -0,0 +1,70 @@ +/*************************************************************************/ +/* openxr_fb_display_refresh_rate_extension.h */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */ +/* */ +/* 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_DISPLAY_REFRESH_RATE_EXTENSION_H +#define OPENXR_FB_DISPLAY_REFRESH_RATE_EXTENSION_H + +// This extension gives us access to the possible display refresh rates +// supported by the HMD. +// While this is an FB extension it has been adopted by most runtimes and +// will likely become core in the near future. + +#include "../openxr_api.h" +#include "../util.h" + +#include "openxr_extension_wrapper.h" + +class OpenXRDisplayRefreshRateExtension : public OpenXRExtensionWrapper { +public: + static OpenXRDisplayRefreshRateExtension *get_singleton(); + + OpenXRDisplayRefreshRateExtension(OpenXRAPI *p_openxr_api); + virtual ~OpenXRDisplayRefreshRateExtension() override; + + virtual void on_instance_created(const XrInstance p_instance) override; + virtual void on_instance_destroyed() override; + + float get_refresh_rate() const; + void set_refresh_rate(float p_refresh_rate); + + Array get_available_refresh_rates() const; + +private: + static OpenXRDisplayRefreshRateExtension *singleton; + + bool display_refresh_rate_ext = false; + + // OpenXR API call wrappers + EXT_PROTO_XRRESULT_FUNC4(xrEnumerateDisplayRefreshRatesFB, (XrSession), session, (uint32_t), displayRefreshRateCapacityInput, (uint32_t *), displayRefreshRateCountOutput, (float *), displayRefreshRates); + EXT_PROTO_XRRESULT_FUNC2(xrGetDisplayRefreshRateFB, (XrSession), session, (float *), display_refresh_rate); + EXT_PROTO_XRRESULT_FUNC2(xrRequestDisplayRefreshRateFB, (XrSession), session, (float), display_refresh_rate); +}; + +#endif // OPENXR_FB_DISPLAY_REFRESH_RATE_EXTENSION_H -- cgit v1.2.3