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st/oxr: Add XRT_CAST_OXR_HANDLE_TO_PTR macro

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This commit is contained in:
Ryan Pavlik 2020-04-28 17:46:22 -05:00
parent cecb8f31af
commit d95219810e
1 changed files with 12 additions and 0 deletions
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12
src/xrt/state_trackers/oxr/oxr_objects.h
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@ -44,6 +44,18 @@ extern "C" {
#define XRT_CAST_PTR_TO_OXR_HANDLE(HANDLE_TYPE, PTR) \
((HANDLE_TYPE)(uint64_t)(uintptr_t)(PTR))
/*!
* @brief Cast an OpenXR handle to a pointer in such a way as to avoid warnings.
*
* Avoids -Wint-to-pointer-cast by first casting to a 64-bit int, then to a
* pointer-sized int, then to the desired pointer type. That's a lot of no-ops
* on 64-bit, but a narrowing (!) conversion on 32-bit.
*
* @ingroup oxr
*/
#define XRT_CAST_OXR_HANDLE_TO_PTR(PTR_TYPE, HANDLE) \
((PTR_TYPE)(uintptr_t)(uint64_t)(HANDLE))
/*!
* @defgroup oxr_main OpenXR main code
*