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/*=========================================================================
Program: Visualization Toolkit
Module: XrExtensions.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
//*********************************************************
// Copyright (c) Microsoft. All rights reserved.
//
// Apache 2.0 License
//
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied. See the License for the specific language governing
// permissions and limitations under the License.
//
//*********************************************************
/**
* @file XrExtensions.h
*
* @brief Load OpenXR extensions common to all platforms and graphics backend.
*
* Provides the ExtensionDispatchTable struct to load extension function
* pointers at runtime for the current XrInstance.
*
* File adapted from:
* https://github.com/microsoft/MixedReality-HolographicRemoting-Samples/blob/f6b55479646bda3bffea58bb3e9c9d9c5e0ab177/remote_openxr/desktop/XrUtility/XrExtensions.h
*
* @sa
* vtkOpenXr.h XrGraphicsExtensions.h XrConnectionExtensions.h
*/
#ifndef XrExtensions_h
#define XrExtensions_h
#if XR_KHR_visibility_mask
#define FOR_EACH_VISIBILITY_MASK_FUNCTION(_) _(xrGetVisibilityMaskKHR)
#else
#define FOR_EACH_VISIBILITY_MASK_FUNCTION(_)
#endif
#ifdef XR_MSFT_controller_model
#define FOR_EACH_CONTROLLER_MODEL_EXTENSION_FUNCTION(_) \
_(xrGetControllerModelKeyMSFT) \
_(xrLoadControllerModelMSFT) \
_(xrGetControllerModelPropertiesMSFT) \
_(xrGetControllerModelStateMSFT)
#else
#define FOR_EACH_CONTROLLER_MODEL_EXTENSION_FUNCTION(_)
#endif
#if XR_MSFT_perception_anchor_interop && defined(XR_USE_PLATFORM_WIN32)
#define FOR_EACH_PERCEPTION_ANCHOR_INTEROP_FUNCTION(_) \
_(xrCreateSpatialAnchorFromPerceptionAnchorMSFT) \
_(xrTryGetPerceptionAnchorFromSpatialAnchorMSFT)
#else
#define FOR_EACH_PERCEPTION_ANCHOR_INTEROP_FUNCTION(_)
#endif
#if XR_MSFT_spatial_anchor
#define FOR_EACH_SPATIAL_ANCHOR_FUNCTION(_) \
_(xrCreateSpatialAnchorMSFT) \
_(xrCreateSpatialAnchorSpaceMSFT) \
_(xrDestroySpatialAnchorMSFT)
#else
#define FOR_EACH_SPATIAL_ANCHOR_FUNCTION(_)
#endif
#if XR_EXT_hand_tracking
#define FOR_EACH_HAND_TRACKING_FUNCTION(_) \
_(xrCreateHandTrackerEXT) \
_(xrDestroyHandTrackerEXT) \
_(xrLocateHandJointsEXT)
#else
#define FOR_EACH_HAND_TRACKING_FUNCTION(_)
#endif
#if XR_MSFT_hand_tracking_mesh
#define FOR_EACH_HAND_TRACKING_MESH_FUNCTION(_) \
_(xrCreateHandMeshSpaceMSFT) \
_(xrUpdateHandMeshMSFT)
#else
#define FOR_EACH_HAND_TRACKING_MESH_FUNCTION(_)
#endif
#if XR_MSFT_spatial_graph_bridge
#define FOR_EACH_SPATIAL_GRAPH_BRIDGE_FUNCTION(_) _(xrCreateSpatialGraphNodeSpaceMSFT)
#else
#define FOR_EACH_SPATIAL_GRAPH_BRIDGE_FUNCTION(_)
#endif
#if XR_MSFT_scene_understanding_preview2
#define FOR_EACH_SCENE_UNDERSTANDING_FUNCTION(_) \
_(xrCreateSceneObserverMSFT) \
_(xrDestroySceneObserverMSFT) \
_(xrCreateSceneMSFT) \
_(xrDestroySceneMSFT) \
_(xrComputeNewSceneMSFT) \
_(xrGetSceneComputeStateMSFT) \
_(xrGetSceneComponentsMSFT) \
_(xrLocateSceneComponentsMSFT) \
_(xrGetSceneMeshBuffersMSFT)
#else
#define FOR_EACH_SCENE_UNDERSTANDING_FUNCTION(_)
#endif
#if XR_MSFT_scene_understanding_serialization_preview
#define FOR_EACH_SCENE_UNDERSTANDING_SERIALIZATION_FUNCTION(_) \
_(xrDeserializeSceneMSFT) \
_(xrGetSceneSerializedDataMSFT)
#else
#define FOR_EACH_SCENE_UNDERSTANDING_SERIALIZATION_FUNCTION(_)
#endif
#define FOR_EACH_EXTENSION_FUNCTION(_) \
FOR_EACH_VISIBILITY_MASK_FUNCTION(_) \
FOR_EACH_HAND_TRACKING_FUNCTION(_) \
FOR_EACH_HAND_TRACKING_MESH_FUNCTION(_) \
FOR_EACH_SPATIAL_GRAPH_BRIDGE_FUNCTION(_) \
FOR_EACH_SPATIAL_ANCHOR_FUNCTION(_) \
FOR_EACH_CONTROLLER_MODEL_EXTENSION_FUNCTION(_) \
FOR_EACH_PERCEPTION_ANCHOR_INTEROP_FUNCTION(_) \
FOR_EACH_SCENE_UNDERSTANDING_FUNCTION(_) \
FOR_EACH_SCENE_UNDERSTANDING_SERIALIZATION_FUNCTION(_)
#define GET_INSTANCE_PROC_ADDRESS(name) \
(void)xrGetInstanceProcAddr( \
instance, #name, reinterpret_cast<PFN_xrVoidFunction*>(const_cast<PFN_##name*>(&name)));
#define DEFINE_PROC_MEMBER(name) PFN_##name name{ nullptr };
namespace xr
{
VTK_ABI_NAMESPACE_BEGIN
struct ExtensionDispatchTable
{
FOR_EACH_EXTENSION_FUNCTION(DEFINE_PROC_MEMBER);
ExtensionDispatchTable() = default;
void PopulateDispatchTable(XrInstance instance)
{
FOR_EACH_EXTENSION_FUNCTION(GET_INSTANCE_PROC_ADDRESS);
}
};
VTK_ABI_NAMESPACE_END
} // namespace xr
#undef DEFINE_PROC_MEMBER
#undef GET_INSTANCE_PROC_ADDRESS
#undef FOR_EACH_EXTENSION_FUNCTION
#endif
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