Vulkan for XR tutorial using Simple Engine#335
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Add "Incorporating into the Engine" sections demonstrating practical implementation of Variable Rate Shading, Canted Displays, CAVE Architecture, Warp and Blend, LightField Theory, Plenoptic Synthesis, Scene Understanding, ML Inference, Semantic Occlusion, Platform Divergence, and Spatial Diagnostics CI/CD. Include C++ code examples for renderer_core.cpp, renderer_rendering.cpp, and engine.cpp showing feature enablement, pipeline setup, and compute passes using Vulkan 1.4 and Slang shaders.
…igation Add navigation structure for new OpenXR-Vulkan spatial computing guide covering 20 chapters: OpenXR-Vulkan handshake, runtime-owned swapchains, dynamic rendering, predictive frame loop, late latching, action spaces, Slang shaders, quad-views with foveated rendering, variable rate shading, canted displays, CAVE architecture, warp and blend, lightfield theory, plenoptic synthesis, scene understanding, ML inference, semantic occlusion, platform divergence, and spatial diagnostics. Each chapter includes introduction, technical deep-dives, and engine integration sections.
…ration Replace openxr.hpp C++ wrapper with native openxr.h C API throughout xr_context. Add OpenXR::OpenXR alias for openxr_loader target compatibility. Fix memory_pool.cpp source path and Assets copy destination. Load Vulkan extension function pointers explicitly via xrGetInstanceProcAddr. Implement proper LUID extraction from OpenXR-selected physical device using VkPhysicalDeviceIDProperties. Replace XrGuidMSFT with XrUuidMSFT for spatial mesh structure. Update all OpenXR handle types from C++ wrappers to native C types (XrInstance, XrSession, XrSpace, XrAction, XrSwapchain). Convert all OpenXR API calls from method-style to function-style. Initialize views vector with proper XR_TYPE_VIEW structure type.
…e and update XrGuidMSFT to XrUuidMSFT
…llation Add vcpkg PATH resolution using VCPKG_INSTALLATION_ROOT. Add error checking after simple_engine and openxr-loader installation steps. Implement vcpkg caching in GitHub Actions workflow to speed up CI builds. Consolidate vcpkg environment setup into separate step with binary cache configuration.
…Properties2/getFeatures2 Replace manual pNext chaining with type-safe templated Vulkan-Hpp methods for querying PhysicalDeviceIDProperties and PhysicalDevicePresentBarrierFeaturesNV. Update code examples in hardware alignment, CAVE architecture, and renderer_core.cpp to use getProperties2<>/getFeatures2<> with compile-time type specification and .get<>() accessor pattern.
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That's a pretty comprehensive PR 👍🏻 Will prob. take some time to review this, but at first glance: Can we lower the baseline from Vulkan 1.4 to 1.3? 1.4 didn't add that much, but it has very limited support on mobile. |
SaschaWillems
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Mar 30, 2026
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Did a first quick review. I don't have much experience with OpenXR, but this looks good to me and was easy to follow.
Aside from the comments, I'd like to see links to existing documentation like the tutorial, the spec and/or the guide, making it easier for people to discover relevant adjacent information.
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CMake setup for the source fails for me, but maybe I'm doing something wrong (I didn't find build instructions for the OpenXR engine variation). When running CMake from the attachments/openxr_engine folder, I get the following errors: |
…atial computing tutorial.
…ration Replace openxr.hpp C++ wrapper with native openxr.h C API throughout xr_context. Add OpenXR::OpenXR alias for openxr_loader target compatibility. Fix memory_pool.cpp source path and Assets copy destination. Load Vulkan extension function pointers explicitly via xrGetInstanceProcAddr. Implement proper LUID extraction from OpenXR-selected physical device using VkPhysicalDeviceIDProperties. Replace XrGuidMSFT with XrUuidMSFT for spatial mesh structure. Update all OpenXR handle types from C++ wrappers to native C types (XrInstance, XrSession, XrSpace, XrAction, XrSwapchain). Convert all OpenXR API calls from method-style to function-style. Initialize views vector with proper XR_TYPE_VIEW structure type.
…s and widgets files.
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Add engine integration sections for spatial computing chapters 10-20
Add "Incorporating into the Engine" sections demonstrating practical implementation of Variable Rate Shading, Canted Displays, CAVE Architecture, Warp and Blend, LightField Theory, Plenoptic Synthesis, Scene Understanding, ML Inference, Semantic Occlusion, Platform Divergence, and Spatial Diagnostics CI/CD. Include C++ code examples for renderer_core.cpp, renderer_rendering.cpp, and engine.cpp showing feature enablement, pipeline setup, and compute passes using Vulkan 1.4 and Slang shaders.
This is a WIP currently, doing this to help test the CI scripts.