oxr_api_funcs.h

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// Copyright 2018-2024, Collabora, Ltd.
// Copyright 2025-2026, NVIDIA CORPORATION.
// SPDX-License-Identifier: BSL-1.0
/*!
 * @file
 * @brief  Header defining all API functions.
 * @author Jakob Bornecrantz <jakob@collabora.com>
 * @author Korcan Hussein <korcan.hussein@collabora.com>
 * @ingroup oxr_api
 */
 
#pragma once
 
#include "oxr_extension_support.h"
#include "actions/oxr_api_action.h"
 
 
#ifdef __cplusplus
extern "C" {
#endif
 
 
/*!
 * @defgroup oxr_api OpenXR entrypoints
 *
 * Gets called from the client application, does most verification and routes
 * calls into @ref oxr_main functions.
 *
 * @ingroup oxr
 * @{
 */
 
 
/*
 *
 * oxr_api_negotiate.c
 *
 */
 
//! OpenXR API function @ep{xrGetInstanceProcAddr}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetInstanceProcAddr(XrInstance instance, const char *name, PFN_xrVoidFunction *function);
 
//! OpenXR API function @ep{xrEnumerateApiLayerProperties}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrEnumerateApiLayerProperties(uint32_t propertyCapacityInput,
                                  uint32_t *propertyCountOutput,
                                  XrApiLayerProperties *properties);
 
 
/*
 *
 * oxr_api_instance.c
 *
 */
 
#ifdef OXR_HAVE_KHR_loader_init
//! OpenXR API function @ep{xrInitializeLoaderKHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrInitializeLoaderKHR(const XrLoaderInitInfoBaseHeaderKHR *loaderInitInfo);
#endif // OXR_HAVE_KHR_loader_init
 
//! OpenXR API function @ep{xrEnumerateInstanceExtensionProperties}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrEnumerateInstanceExtensionProperties(const char *layerName,
                                           uint32_t propertyCapacityInput,
                                           uint32_t *propertyCountOutput,
                                           XrExtensionProperties *properties);
 
//! OpenXR API function @ep{xrCreateInstance}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCreateInstance(const XrInstanceCreateInfo *createInfo, XrInstance *instance);
 
//! OpenXR API function @ep{xrDestroyInstance}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrDestroyInstance(XrInstance instance);
 
//! OpenXR API function @ep{xrGetInstanceProperties}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetInstanceProperties(XrInstance instance, XrInstanceProperties *instanceProperties);
 
//! OpenXR API function @ep{xrPollEvent}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrPollEvent(XrInstance instance, XrEventDataBuffer *eventData);
 
//! OpenXR API function @ep{xrResultToString}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrResultToString(XrInstance instance, XrResult value, char buffer[XR_MAX_RESULT_STRING_SIZE]);
 
//! OpenXR API function @ep{xrStructureTypeToString}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrStructureTypeToString(XrInstance instance, XrStructureType value, char buffer[XR_MAX_STRUCTURE_NAME_SIZE]);
 
//! OpenXR API function @ep{xrStringToPath}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrStringToPath(XrInstance instance, const char *pathString, XrPath *path);
 
//! OpenXR API function @ep{xrPathToString}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrPathToString(
    XrInstance instance, XrPath path, uint32_t bufferCapacityInput, uint32_t *bufferCountOutput, char *buffer);
 
//! OpenXR API function @ep{xrConvertTimespecTimeToTimeKHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrConvertTimespecTimeToTimeKHR(XrInstance instance, const struct timespec *timespecTime, XrTime *time);
 
//! OpenXR API function @ep{xrConvertTimeToTimespecTimeKHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrConvertTimeToTimespecTimeKHR(XrInstance instance, XrTime time, struct timespec *timespecTime);
 
#ifdef XR_USE_PLATFORM_WIN32
//! OpenXR API function @ep{xrConvertWin32PerformanceCounterToTimeKHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrConvertWin32PerformanceCounterToTimeKHR(XrInstance instance,
                                              const LARGE_INTEGER *performanceCounter,
                                              XrTime *time);
 
//! OpenXR API function @ep{xrConvertTimeToWin32PerformanceCounterKHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrConvertTimeToWin32PerformanceCounterKHR(XrInstance instance, XrTime time, LARGE_INTEGER *performanceCounter);
#endif // XR_USE_PLATFORM_WIN32
 
#ifdef OXR_HAVE_KHR_extended_struct_name_lengths
//! OpenXR API function @ep{xrStructureTypeToString2KHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrStructureTypeToString2KHR(XrInstance instance,
                                XrStructureType value,
                                char buffer[XR_MAX_STRUCTURE_NAME_SIZE_EXTENDED_KHR]);
#endif // OXR_HAVE_KHR_extended_struct_name_lengths
 
/*
 *
 * oxr_api_system.c
 *
 */
 
//! OpenXR API function @ep{xrGetSystem}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetSystem(XrInstance instance, const XrSystemGetInfo *getInfo, XrSystemId *systemId);
 
//! OpenXR API function @ep{xrGetSystemProperties}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetSystemProperties(XrInstance instance, XrSystemId systemId, XrSystemProperties *properties);
 
//! OpenXR API function @ep{xrEnumerateViewConfigurations}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrEnumerateViewConfigurations(XrInstance instance,
                                  XrSystemId systemId,
                                  uint32_t viewConfigurationTypeCapacityInput,
                                  uint32_t *viewConfigurationTypeCountOutput,
                                  XrViewConfigurationType *viewConfigurationTypes);
 
//! OpenXR API function @ep{xrGetViewConfigurationProperties}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetViewConfigurationProperties(XrInstance instance,
                                     XrSystemId systemId,
                                     XrViewConfigurationType viewConfigurationType,
                                     XrViewConfigurationProperties *configurationProperties);
 
//! OpenXR API function @ep{xrEnumerateViewConfigurationViews}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrEnumerateViewConfigurationViews(XrInstance instance,
                                      XrSystemId systemId,
                                      XrViewConfigurationType viewConfigurationType,
                                      uint32_t viewCapacityInput,
                                      uint32_t *viewCountOutput,
                                      XrViewConfigurationView *views);
 
//! OpenXR API function @ep{xrEnumerateEnvironmentBlendModes}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrEnumerateEnvironmentBlendModes(XrInstance instance,
                                     XrSystemId systemId,
                                     XrViewConfigurationType viewConfigurationType,
                                     uint32_t environmentBlendModeCapacityInput,
                                     uint32_t *environmentBlendModeCountOutput,
                                     XrEnvironmentBlendMode *environmentBlendModes);
 
#ifdef XR_USE_GRAPHICS_API_OPENGL
//! OpenXR API function @ep{xrGetOpenGLGraphicsRequirementsKHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetOpenGLGraphicsRequirementsKHR(XrInstance instance,
                                       XrSystemId systemId,
                                       XrGraphicsRequirementsOpenGLKHR *graphicsRequirements);
#endif
 
#ifdef XR_USE_GRAPHICS_API_OPENGL_ES
//! OpenXR API function @ep{xrGetOpenGLESGraphicsRequirementsKHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetOpenGLESGraphicsRequirementsKHR(XrInstance instance,
                                         XrSystemId systemId,
                                         XrGraphicsRequirementsOpenGLESKHR *graphicsRequirements);
#endif
 
#ifdef XR_USE_GRAPHICS_API_VULKAN
//! OpenXR API function @ep{xrGetVulkanInstanceExtensionsKHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetVulkanInstanceExtensionsKHR(XrInstance instance,
                                     XrSystemId systemId,
                                     uint32_t namesCapacityInput,
                                     uint32_t *namesCountOutput,
                                     char *namesString);
 
//! OpenXR API function @ep{xrGetVulkanDeviceExtensionsKHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetVulkanDeviceExtensionsKHR(XrInstance instance,
                                   XrSystemId systemId,
                                   uint32_t namesCapacityInput,
                                   uint32_t *namesCountOutput,
                                   char *namesString);
 
//! OpenXR API function @ep{xrGetVulkanGraphicsDeviceKHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetVulkanGraphicsDeviceKHR(XrInstance instance,
                                 XrSystemId systemId,
                                 VkInstance vkInstance,
                                 VkPhysicalDevice *vkPhysicalDevice);
 
//! OpenXR API function @ep{xrGetVulkanGraphicsDeviceKHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetVulkanGraphicsDevice2KHR(XrInstance instance,
                                  const XrVulkanGraphicsDeviceGetInfoKHR *getInfo,
                                  VkPhysicalDevice *vkPhysicalDevice);
 
//! OpenXR API function @ep{xrGetVulkanGraphicsRequirementsKHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetVulkanGraphicsRequirementsKHR(XrInstance instance,
                                       XrSystemId systemId,
                                       XrGraphicsRequirementsVulkanKHR *graphicsRequirements);
 
//! OpenXR API function @ep{xrGetVulkanGraphicsRequirements2KHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetVulkanGraphicsRequirements2KHR(XrInstance instance,
                                        XrSystemId systemId,
                                        XrGraphicsRequirementsVulkan2KHR *graphicsRequirements);
 
//! OpenXR API function @ep{xrCreateVulkanInstanceKHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCreateVulkanInstanceKHR(XrInstance instance,
                              const XrVulkanInstanceCreateInfoKHR *createInfo,
                              VkInstance *vulkanInstance,
                              VkResult *vulkanResult);
 
//! OpenXR API function @ep{xrCreateVulkanDeviceKHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCreateVulkanDeviceKHR(XrInstance instance,
                            const XrVulkanDeviceCreateInfoKHR *createInfo,
                            VkDevice *vulkanDevice,
                            VkResult *vulkanResult);
#endif
 
#ifdef XR_USE_GRAPHICS_API_D3D11
 
//! OpenXR API function @ep{xrGetD3D11GraphicsRequirementsKHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetD3D11GraphicsRequirementsKHR(XrInstance instance,
                                      XrSystemId systemId,
                                      XrGraphicsRequirementsD3D11KHR *graphicsRequirements);
#endif // XR_USE_GRAPHICS_API_D3D11
 
#ifdef XR_USE_GRAPHICS_API_D3D12
 
//! OpenXR API function @ep{xrGetD3D12GraphicsRequirementsKHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetD3D12GraphicsRequirementsKHR(XrInstance instance,
                                      XrSystemId systemId,
                                      XrGraphicsRequirementsD3D12KHR *graphicsRequirements);
#endif // XR_USE_GRAPHICS_API_D3D12
 
#ifdef OXR_HAVE_MND_query_egl_device
 
//! OpenXR API function @ep{xrGetSystemEGLDeviceMND}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetSystemEGLDeviceMND(XrInstance instance, const XrSystemEGLDeviceGetInfoMND *info, XrSystemEGLDeviceMND *device);
#endif // OXR_HAVE_MND_query_egl_device
 
/*
 *
 * oxr_api_session.c
 *
 */
 
//! OpenXR API function @ep{xrCreateSession}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCreateSession(XrInstance instance, const XrSessionCreateInfo *createInfo, XrSession *session);
 
//! OpenXR API function @ep{xrDestroySession}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrDestroySession(XrSession session);
 
//! OpenXR API function @ep{xrBeginSession}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrBeginSession(XrSession session, const XrSessionBeginInfo *beginInfo);
 
//! OpenXR API function @ep{xrEndSession}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrEndSession(XrSession session);
 
//! OpenXR API function @ep{xrWaitFrame}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrWaitFrame(XrSession session, const XrFrameWaitInfo *frameWaitInfo, XrFrameState *frameState);
 
//! OpenXR API function @ep{xrBeginFrame}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrBeginFrame(XrSession session, const XrFrameBeginInfo *frameBeginInfo);
 
//! OpenXR API function @ep{xrEndFrame}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrEndFrame(XrSession session, const XrFrameEndInfo *frameEndInfo);
 
//! OpenXR API function @ep{xrRequestExitSession}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrRequestExitSession(XrSession session);
 
//! OpenXR API function @ep{xrLocateViews}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrLocateViews(XrSession session,
                  const XrViewLocateInfo *viewLocateInfo,
                  XrViewState *viewState,
                  uint32_t viewCapacityInput,
                  uint32_t *viewCountOutput,
                  XrView *views);
 
#ifdef OXR_HAVE_KHR_visibility_mask
//! OpenXR API function @ep{xrGetVisibilityMaskKHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetVisibilityMaskKHR(XrSession session,
                           XrViewConfigurationType viewConfigurationType,
                           uint32_t viewIndex,
                           XrVisibilityMaskTypeKHR visibilityMaskType,
                           XrVisibilityMaskKHR *visibilityMask);
#endif // OXR_HAVE_KHR_visibility_mask
 
#ifdef OXR_HAVE_KHR_android_thread_settings
//! OpenXR API function @ep{xrSetAndroidApplicationThreadKHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrSetAndroidApplicationThreadKHR(XrSession session, XrAndroidThreadTypeKHR threadType, uint32_t threadId);
#endif // OXR_HAVE_KHR_android_thread_settings
 
#ifdef OXR_HAVE_EXT_performance_settings
//! OpenXR API function @ep{xrPerfSettingsSetPerformanceLevelEXT}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrPerfSettingsSetPerformanceLevelEXT(XrSession session,
                                         XrPerfSettingsDomainEXT domain,
                                         XrPerfSettingsLevelEXT level);
#endif // OXR_HAVE_EXT_performance_settings
 
#ifdef OXR_HAVE_EXT_thermal_query
//! OpenXR API function @ep{xrThermalGetTemperatureTrendEXT}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrThermalGetTemperatureTrendEXT(XrSession session,
                                    XrPerfSettingsDomainEXT domain,
                                    XrPerfSettingsNotificationLevelEXT *notificationLevel,
                                    float *tempHeadroom,
                                    float *tempSlope);
#endif // OXR_HAVE_EXT_thermal_query
 
 
 
/*
 *
 * oxr_api_space.c
 *
 */
 
//! OpenXR API function @ep{xrCreateActionSpace}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCreateActionSpace(XrSession session, const XrActionSpaceCreateInfo *createInfo, XrSpace *space);
 
//! OpenXR API function @ep{xrEnumerateReferenceSpaces}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrEnumerateReferenceSpaces(XrSession session,
                               uint32_t spaceCapacityInput,
                               uint32_t *spaceCountOutput,
                               XrReferenceSpaceType *spaces);
 
//! OpenXR API function @ep{xrGetReferenceSpaceBoundsRect}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetReferenceSpaceBoundsRect(XrSession session, XrReferenceSpaceType referenceSpaceType, XrExtent2Df *bounds);
 
//! OpenXR API function @ep{xrCreateReferenceSpace}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCreateReferenceSpace(XrSession session, const XrReferenceSpaceCreateInfo *createInfo, XrSpace *space);
 
//! OpenXR API function @ep{xrLocateSpace}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrLocateSpace(XrSpace space, XrSpace baseSpace, XrTime time, XrSpaceLocation *location);
 
//! OpenXR API function @ep{xrDestroySpace}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrDestroySpace(XrSpace space);
 
 
/*
 *
 * oxr_api_swapchain.c
 *
 */
 
//! OpenXR API function @ep{xrEnumerateSwapchainFormats}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrEnumerateSwapchainFormats(XrSession session,
                                uint32_t formatCapacityInput,
                                uint32_t *formatCountOutput,
                                int64_t *formats);
 
//! OpenXR API function @ep{xrCreateSwapchain}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCreateSwapchain(XrSession session, const XrSwapchainCreateInfo *createInfo, XrSwapchain *swapchain);
 
//! OpenXR API function @ep{xrDestroySwapchain}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrDestroySwapchain(XrSwapchain swapchain);
 
//! OpenXR API function @ep{xrEnumerateSwapchainImages}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrEnumerateSwapchainImages(XrSwapchain swapchain,
                               uint32_t imageCapacityInput,
                               uint32_t *imageCountOutput,
                               XrSwapchainImageBaseHeader *images);
 
//! OpenXR API function @ep{xrAcquireSwapchainImage}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrAcquireSwapchainImage(XrSwapchain swapchain, const XrSwapchainImageAcquireInfo *acquireInfo, uint32_t *index);
 
//! OpenXR API function @ep{xrWaitSwapchainImage}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrWaitSwapchainImage(XrSwapchain swapchain, const XrSwapchainImageWaitInfo *waitInfo);
 
//! OpenXR API function @ep{xrReleaseSwapchainImage}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrReleaseSwapchainImage(XrSwapchain swapchain, const XrSwapchainImageReleaseInfo *releaseInfo);
 
 
/*
 *
 * oxr_api_debug.c
 *
 */
 
//! OpenXR API function @ep{xrSetDebugUtilsObjectNameEXT}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrSetDebugUtilsObjectNameEXT(XrInstance instance, const XrDebugUtilsObjectNameInfoEXT *nameInfo);
 
//! OpenXR API function @ep{xrCreateDebugUtilsMessengerEXT}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCreateDebugUtilsMessengerEXT(XrInstance instance,
                                   const XrDebugUtilsMessengerCreateInfoEXT *createInfo,
                                   XrDebugUtilsMessengerEXT *messenger);
 
//! OpenXR API function @ep{xrDestroyDebugUtilsMessengerEXT}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrDestroyDebugUtilsMessengerEXT(XrDebugUtilsMessengerEXT messenger);
 
//! OpenXR API function @ep{xrSubmitDebugUtilsMessageEXT}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrSubmitDebugUtilsMessageEXT(XrInstance instance,
                                 XrDebugUtilsMessageSeverityFlagsEXT messageSeverity,
                                 XrDebugUtilsMessageTypeFlagsEXT messageTypes,
                                 const XrDebugUtilsMessengerCallbackDataEXT *callbackData);
 
//! OpenXR API function @ep{xrSessionBeginDebugUtilsLabelRegionEXT}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrSessionBeginDebugUtilsLabelRegionEXT(XrSession session, const XrDebugUtilsLabelEXT *labelInfo);
 
//! OpenXR API function @ep{xrSessionEndDebugUtilsLabelRegionEXT}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrSessionEndDebugUtilsLabelRegionEXT(XrSession session);
 
//! OpenXR API function @ep{xrSessionInsertDebugUtilsLabelEXT}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrSessionInsertDebugUtilsLabelEXT(XrSession session, const XrDebugUtilsLabelEXT *labelInfo);
 
 
/*
 *
 * oxr_api_hand_tracking.c
 *
 */
 
//! OpenXR API function @ep{xrCreateHandTrackerEXT}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCreateHandTrackerEXT(XrSession session,
                           const XrHandTrackerCreateInfoEXT *createInfo,
                           XrHandTrackerEXT *handTracker);
 
//! OpenXR API function @ep{xrDestroyHandTrackerEXT}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrDestroyHandTrackerEXT(XrHandTrackerEXT handTracker);
 
//! OpenXR API function @ep{xrLocateHandJointsEXT}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrLocateHandJointsEXT(XrHandTrackerEXT handTracker,
                          const XrHandJointsLocateInfoEXT *locateInfo,
                          XrHandJointLocationsEXT *locations);
 
//! OpenXR API function @ep{xrApplyForceFeedbackCurlMNDX}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrApplyForceFeedbackCurlMNDX(XrHandTrackerEXT handTracker, const XrForceFeedbackCurlApplyLocationsMNDX *locations);
 
 
//! OpenXR API function @ep{xrEnumerateDisplayRefreshRatesFB}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrEnumerateDisplayRefreshRatesFB(XrSession session,
                                     uint32_t displayRefreshRateCapacityInput,
                                     uint32_t *displayRefreshRateCountOutput,
                                     float *displayRefreshRates);
 
 
/*
 *
 * Mix bag of files, because people put things in the wrong place in the header.
 *
 */
 
//! OpenXR API function @ep{xrGetDisplayRefreshRateFB}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetDisplayRefreshRateFB(XrSession session, float *displayRefreshRate);
 
//! OpenXR API function @ep{xrRequestDisplayRefreshRateFB}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrRequestDisplayRefreshRateFB(XrSession session, float displayRefreshRate);
 
//! OpenXR API function @ep{xrGetDeviceSampleRateFB}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetDeviceSampleRateFB(XrSession session,
                            const XrHapticActionInfo *hapticActionInfo,
                            XrDevicePcmSampleRateGetInfoFB *deviceSampleRate);
 
//! OpenXR API function @ep{xrLocateSpacesKHR}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrLocateSpacesKHR(XrSession session, const XrSpacesLocateInfoKHR *locateInfo, XrSpaceLocationsKHR *spaceLocations);
 
//! OpenXR API function @ep{xrLocateSpaces}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrLocateSpaces(XrSession session, const XrSpacesLocateInfo *locateInfo, XrSpaceLocations *spaceLocations);
 
#ifdef OXR_HAVE_EXT_plane_detection
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCreatePlaneDetectorEXT(XrSession session,
                             const XrPlaneDetectorCreateInfoEXT *createInfo,
                             XrPlaneDetectorEXT *planeDetector);
 
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrDestroyPlaneDetectorEXT(XrPlaneDetectorEXT planeDetector);
 
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrBeginPlaneDetectionEXT(XrPlaneDetectorEXT planeDetector, const XrPlaneDetectorBeginInfoEXT *beginInfo);
 
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetPlaneDetectionStateEXT(XrPlaneDetectorEXT planeDetector, XrPlaneDetectionStateEXT *state);
 
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetPlaneDetectionsEXT(XrPlaneDetectorEXT planeDetector,
                            const XrPlaneDetectorGetInfoEXT *info,
                            XrPlaneDetectorLocationsEXT *locations);
 
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetPlanePolygonBufferEXT(XrPlaneDetectorEXT planeDetector,
                               uint64_t planeId,
                               uint32_t polygonBufferIndex,
                               XrPlaneDetectorPolygonBufferEXT *polygonBuffer);
#endif // OXR_HAVE_EXT_plane_detection
 
/*
 *
 * oxr_api_passthrough.c
 *
 */
#ifdef OXR_HAVE_FB_passthrough
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCreateGeometryInstanceFB(XrSession session,
                               const XrGeometryInstanceCreateInfoFB *createInfo,
                               XrGeometryInstanceFB *outGeometryInstance);
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCreatePassthroughFB(XrSession session,
                          const XrPassthroughCreateInfoFB *createInfo,
                          XrPassthroughFB *outPassthrough);
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCreatePassthroughLayerFB(XrSession session,
                               const XrPassthroughLayerCreateInfoFB *createInfo,
                               XrPassthroughLayerFB *outLayer);
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrDestroyGeometryInstanceFB(XrGeometryInstanceFB instance);
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrDestroyPassthroughFB(XrPassthroughFB passthrough);
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrDestroyPassthroughLayerFB(XrPassthroughLayerFB layer);
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGeometryInstanceSetTransformFB(XrGeometryInstanceFB instance,
                                     const XrGeometryInstanceTransformFB *transformation);
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrPassthroughLayerPauseFB(XrPassthroughLayerFB layer);
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrPassthroughLayerResumeFB(XrPassthroughLayerFB layer);
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrPassthroughLayerSetStyleFB(XrPassthroughLayerFB layer, const XrPassthroughStyleFB *style);
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrPassthroughPauseFB(XrPassthroughFB passthrough);
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrPassthroughStartFB(XrPassthroughFB passthrough);
#endif
 
#ifdef OXR_HAVE_HTC_facial_tracking
//! OpenXR API function @ep{xrCreateFacialTrackerHTC}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCreateFacialTrackerHTC(XrSession session,
                             const XrFacialTrackerCreateInfoHTC *createInfo,
                             XrFacialTrackerHTC *facialTracker);
 
//! OpenXR API function @ep{xrDestroyFacialTrackerHTC}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrDestroyFacialTrackerHTC(XrFacialTrackerHTC facialTracker);
 
//! OpenXR API function @ep{xrGetFacialExpressionsHTC}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetFacialExpressionsHTC(XrFacialTrackerHTC facialTracker, XrFacialExpressionsHTC *facialExpressions);
#endif
 
#ifdef OXR_HAVE_FB_body_tracking
//! OpenXR API function @ep{xrCreateBodyTrackerFB}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCreateBodyTrackerFB(XrSession session, const XrBodyTrackerCreateInfoFB *createInfo, XrBodyTrackerFB *bodyTracker);
 
//! OpenXR API function @ep{xrDestroyBodyTrackerFB}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrDestroyBodyTrackerFB(XrBodyTrackerFB bodyTracker);
 
//! OpenXR API function @ep{xrGetBodySkeletonFB}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetBodySkeletonFB(XrBodyTrackerFB bodyTracker, XrBodySkeletonFB *skeleton);
 
//! OpenXR API function @ep{xrLocateBodyJointsFB}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrLocateBodyJointsFB(XrBodyTrackerFB bodyTracker,
                         const XrBodyJointsLocateInfoFB *locateInfo,
                         XrBodyJointLocationsFB *locations);
#endif
 
#ifdef OXR_HAVE_BD_body_tracking
//! OpenXR API function @ep{xrCreateBodyTrackerBD}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCreateBodyTrackerBD(XrSession session, const XrBodyTrackerCreateInfoBD *createInfo, XrBodyTrackerBD *bodyTracker);
 
//! OpenXR API function @ep{xrDestroyBodyTrackerBD}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrDestroyBodyTrackerBD(XrBodyTrackerBD bodyTracker);
 
//! OpenXR API function @ep{xrLocateBodyJointsBD}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrLocateBodyJointsBD(XrBodyTrackerBD bodyTracker,
                         const XrBodyJointsLocateInfoBD *locateInfo,
                         XrBodyJointLocationsBD *locations);
#endif
 
#ifdef OXR_HAVE_FB_face_tracking2
//! OpenXR API function @ep{xrCreateFaceTracker2FB}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCreateFaceTracker2FB(XrSession session,
                           const XrFaceTrackerCreateInfo2FB *createInfo,
                           XrFaceTracker2FB *faceTracker);
 
//! OpenXR API function @ep{xrDestroyFaceTracker2FB}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrDestroyFaceTracker2FB(XrFaceTracker2FB faceTracker);
 
//! OpenXR API function @ep{xrGetFaceExpressionWeights2FB}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetFaceExpressionWeights2FB(XrFaceTracker2FB faceTracker,
                                  const XrFaceExpressionInfo2FB *expressionInfo,
                                  XrFaceExpressionWeights2FB *expressionWeights);
#endif
 
/*
 *
 * oxr_api_xdev.c
 *
 */
 
#ifdef OXR_HAVE_MNDX_xdev_space
//! OpenXR API function @ep{xrCreateXDevListMNDX}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCreateXDevListMNDX(XrSession session, const XrCreateXDevListInfoMNDX *info, XrXDevListMNDX *xdevList);
 
//! OpenXR API function @ep{xrGetXDevListGenerationNumberMNDX}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetXDevListGenerationNumberMNDX(XrXDevListMNDX session, uint64_t *outGeneration);
 
//! OpenXR API function @ep{xrEnumerateXDevsMNDX}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrEnumerateXDevsMNDX(XrXDevListMNDX xdevList,
                         uint32_t xdevCapacityInput,
                         uint32_t *xdevCountOutput,
                         XrXDevIdMNDX *xdevs);
 
//! OpenXR API function @ep{xrGetXDevProperty}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetXDevPropertiesMNDX(XrXDevListMNDX xdevList, const XrGetXDevInfoMNDX *info, XrXDevPropertiesMNDX *properties);
 
//! OpenXR API function @ep{xrDestroyXDevListMNDX}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrDestroyXDevListMNDX(XrXDevListMNDX xdevList);
 
//! OpenXR API function @ep{xrCreateXDevSpace}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCreateXDevSpaceMNDX(XrSession session, const XrCreateXDevSpaceInfoMNDX *createInfo, XrSpace *space);
#endif
 
/*
 *
 * oxr_api_body_tracking.c
 *
 */
 
#ifdef OXR_HAVE_META_body_tracking_calibration
//! OpenXR API function @ep{xrResetBodyTrackingCalibrationMETA}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrResetBodyTrackingCalibrationMETA(XrBodyTrackerFB bodyTracker);
 
//! OpenXR API function @ep{xrSuggestBodyTrackingCalibrationOverrideMETA}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrSuggestBodyTrackingCalibrationOverrideMETA(XrBodyTrackerFB bodyTracker,
                                                 const XrBodyTrackingCalibrationInfoMETA *calibrationInfo);
#endif
 
#ifdef OXR_HAVE_META_body_tracking_fidelity
//! OpenXR API function @ep{xrRequestBodyTrackingFidelityMETA}
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrRequestBodyTrackingFidelityMETA(XrBodyTrackerFB bodyTracker, const XrBodyTrackingFidelityMETA fidelity);
#endif
 
/*
 *
 * oxr_api_future.c
 *
 */
 
#ifdef OXR_HAVE_EXT_future
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrPollFutureEXT(XrInstance instance, const XrFuturePollInfoEXT *pollInfo, XrFuturePollResultEXT *pollResult);
 
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCancelFutureEXT(XrInstance instance, const XrFutureCancelInfoEXT *cancelInfo);
#endif
 
/*
 *
 * oxr_api_face_tracking_android.c
 *
 */
 
#ifdef OXR_HAVE_ANDROID_face_tracking
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrCreateFaceTrackerANDROID(XrSession session,
                               const XrFaceTrackerCreateInfoANDROID *createInfo,
                               XrFaceTrackerANDROID *faceTracker);
 
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrDestroyFaceTrackerANDROID(XrFaceTrackerANDROID facialTracker);
 
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetFaceStateANDROID(XrFaceTrackerANDROID faceTracker,
                          const XrFaceStateGetInfoANDROID *getInfo,
                          XrFaceStateANDROID *faceStateOutput);
 
XRAPI_ATTR XrResult XRAPI_CALL
oxr_xrGetFaceCalibrationStateANDROID(XrFaceTrackerANDROID faceTracker, XrBool32 *faceIsCalibratedOutput);
#endif
 
/*!
 * @}
 */
 
 
#ifdef __cplusplus
}
#endif