124 lines
5.2 KiB
C++
124 lines
5.2 KiB
C++
/*************************************************************************/
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/* openxr_fb_display_refresh_rate_extension.cpp */
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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) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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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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#include "openxr_fb_display_refresh_rate_extension.h"
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OpenXRDisplayRefreshRateExtension *OpenXRDisplayRefreshRateExtension::singleton = nullptr;
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OpenXRDisplayRefreshRateExtension *OpenXRDisplayRefreshRateExtension::get_singleton() {
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return singleton;
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}
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OpenXRDisplayRefreshRateExtension::OpenXRDisplayRefreshRateExtension(OpenXRAPI *p_openxr_api) :
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OpenXRExtensionWrapper(p_openxr_api) {
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singleton = this;
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// Extensions we use for our hand tracking.
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request_extensions[XR_FB_DISPLAY_REFRESH_RATE_EXTENSION_NAME] = &display_refresh_rate_ext;
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}
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OpenXRDisplayRefreshRateExtension::~OpenXRDisplayRefreshRateExtension() {
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display_refresh_rate_ext = false;
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}
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void OpenXRDisplayRefreshRateExtension::on_instance_created(const XrInstance p_instance) {
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if (display_refresh_rate_ext) {
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EXT_INIT_XR_FUNC(xrEnumerateDisplayRefreshRatesFB);
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EXT_INIT_XR_FUNC(xrGetDisplayRefreshRateFB);
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EXT_INIT_XR_FUNC(xrRequestDisplayRefreshRateFB);
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}
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}
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void OpenXRDisplayRefreshRateExtension::on_instance_destroyed() {
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display_refresh_rate_ext = false;
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}
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float OpenXRDisplayRefreshRateExtension::get_refresh_rate() const {
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float refresh_rate = 0.0;
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if (display_refresh_rate_ext) {
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float rate;
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XrResult result = xrGetDisplayRefreshRateFB(openxr_api->get_session(), &rate);
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if (XR_FAILED(result)) {
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print_line("OpenXR: Failed to obtain refresh rate [", openxr_api->get_error_string(result), "]");
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} else {
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refresh_rate = rate;
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}
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}
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return refresh_rate;
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}
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void OpenXRDisplayRefreshRateExtension::set_refresh_rate(float p_refresh_rate) {
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if (display_refresh_rate_ext) {
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XrResult result = xrRequestDisplayRefreshRateFB(openxr_api->get_session(), p_refresh_rate);
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if (XR_FAILED(result)) {
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print_line("OpenXR: Failed to set refresh rate [", openxr_api->get_error_string(result), "]");
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}
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}
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}
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Array OpenXRDisplayRefreshRateExtension::get_available_refresh_rates() const {
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Array arr;
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XrResult result;
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if (display_refresh_rate_ext) {
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uint32_t display_refresh_rate_count = 0;
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result = xrEnumerateDisplayRefreshRatesFB(openxr_api->get_session(), 0, &display_refresh_rate_count, nullptr);
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if (XR_FAILED(result)) {
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print_line("OpenXR: Failed to obtain refresh rates count [", openxr_api->get_error_string(result), "]");
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}
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if (display_refresh_rate_count > 0) {
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float *display_refresh_rates = (float *)memalloc(sizeof(float) * display_refresh_rate_count);
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if (display_refresh_rates == nullptr) {
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print_line("OpenXR: Failed to obtain refresh rates memory buffer [", openxr_api->get_error_string(result), "]");
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return arr;
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}
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result = xrEnumerateDisplayRefreshRatesFB(openxr_api->get_session(), display_refresh_rate_count, &display_refresh_rate_count, display_refresh_rates);
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if (XR_FAILED(result)) {
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print_line("OpenXR: Failed to obtain refresh rates count [", openxr_api->get_error_string(result), "]");
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memfree(display_refresh_rates);
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return arr;
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}
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for (uint32_t i = 0; i < display_refresh_rate_count; i++) {
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float refresh_rate = display_refresh_rates[i];
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arr.push_back(Variant(refresh_rate));
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}
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memfree(display_refresh_rates);
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}
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}
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return arr;
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}
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