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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| /* | ||
| Simple DirectMedia Layer | ||
| Copyright (C) 1997-2024 Sam Lantinga <[email protected]> | ||
| This software is provided 'as-is', without any express or implied | ||
| warranty. In no event will the authors be held liable for any damages | ||
| arising from the use of this software. | ||
| Permission is granted to anyone to use this software for any purpose, | ||
| including commercial applications, and to alter it and redistribute it | ||
| freely, subject to the following restrictions: | ||
| 1. The origin of this software must not be misrepresented; you must not | ||
| claim that you wrote the original software. If you use this software | ||
| in a product, an acknowledgment in the product documentation would be | ||
| appreciated but is not required. | ||
| 2. Altered source versions must be plainly marked as such, and must not be | ||
| misrepresented as being the original software. | ||
| 3. This notice may not be removed or altered from any source distribution. | ||
| */ | ||
| #include "SDL_internal.h" | ||
|
|
||
| #ifdef SDL_GPU_OPENXR | ||
|
|
||
| #define DEBUG_DYNAMIC_OPENXR 0 | ||
|
|
||
| #include "SDL_openxrdyn.h" | ||
|
|
||
| typedef struct | ||
| { | ||
| SDL_SharedObject *lib; | ||
| const char *libname; | ||
| } openxrdynlib; | ||
|
|
||
| static openxrdynlib openxr_loader = { NULL, "libopenxr_loader.so.1" }; | ||
|
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||
| static void *OPENXR_GetSym(const char *fnname, bool *failed) | ||
| { | ||
| void *fn = SDL_LoadFunction(openxr_loader.lib, fnname); | ||
|
|
||
| #if DEBUG_DYNAMIC_OPENXR | ||
| if (fn) { | ||
| SDL_Log("OPENXR: Found '%s' in %s (%p)\n", fnname, dynlib->libname, fn); | ||
| } else { | ||
| SDL_Log("OPENXR: Symbol '%s' NOT FOUND!\n", fnname); | ||
| } | ||
| #endif | ||
|
|
||
| return fn; | ||
| } | ||
|
|
||
| // Define all the function pointers and wrappers... | ||
| #define SDL_OPENXR_SYM(name) PFN_##name OPENXR_##name = NULL; | ||
| #include "SDL_openxrsym.h" | ||
|
|
||
| static int openxr_load_refcount = 0; | ||
|
|
||
| void SDL_OPENXR_UnloadLoaderSymbols(void) | ||
| { | ||
| // Don't actually unload if more than one module is using the libs... | ||
| if (openxr_load_refcount > 0) { | ||
| if (--openxr_load_refcount == 0) { | ||
| // set all the function pointers to NULL. | ||
| #define SDL_OPENXR_SYM(name) OPENXR_##name = NULL; | ||
| #include "SDL_openxrsym.h" | ||
|
|
||
| SDL_UnloadObject(openxr_loader.lib); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // returns non-zero if all needed symbols were loaded. | ||
| bool SDL_OPENXR_LoadLoaderSymbols(void) | ||
| { | ||
| bool result = true; // always succeed if not using Dynamic OPENXR stuff. | ||
|
|
||
| // deal with multiple modules (dga, openxr, etc) needing these symbols... | ||
| if (openxr_load_refcount++ == 0) { | ||
| openxr_loader.lib = SDL_LoadObject(openxr_loader.libname); | ||
|
|
||
| if(!openxr_loader.lib) | ||
| return false; | ||
|
|
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| bool failed = false; | ||
|
|
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| #define SDL_OPENXR_SYM(name) OPENXR_##name = (PFN_##name)OPENXR_GetSym(#name, &failed); | ||
| #include "SDL_openxrsym.h" | ||
|
|
||
| if (failed) { | ||
| // in case something got loaded... | ||
| SDL_OPENXR_UnloadLoaderSymbols(); | ||
| result = false; | ||
| } | ||
| } | ||
|
|
||
| return result; | ||
| } | ||
|
|
||
| XrInstancePfns *SDL_OPENXR_LoadInstanceSymbols(XrInstance instance) | ||
| { | ||
| XrResult result; | ||
|
|
||
| XrInstancePfns *pfns = SDL_calloc(1, sizeof(XrInstancePfns)); | ||
|
|
||
| #define SDL_OPENXR_INSTANCE_SYM(name) \ | ||
| result = xrGetInstanceProcAddr(instance, #name, (PFN_xrVoidFunction *)&pfns->name); \ | ||
| if(result != XR_SUCCESS) { \ | ||
| SDL_free(pfns); \ | ||
| return NULL; \ | ||
| } | ||
| #include "SDL_openxrsym.h" | ||
|
|
||
| return pfns; | ||
| } | ||
|
|
||
| #endif // SDL_GPU_OPENXR |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,62 @@ | ||
| /* | ||
| Simple DirectMedia Layer | ||
| Copyright (C) 1997-2024 Sam Lantinga <[email protected]> | ||
| This software is provided 'as-is', without any express or implied | ||
| warranty. In no event will the authors be held liable for any damages | ||
| arising from the use of this software. | ||
| Permission is granted to anyone to use this software for any purpose, | ||
| including commercial applications, and to alter it and redistribute it | ||
| freely, subject to the following restrictions: | ||
| 1. The origin of this software must not be misrepresented; you must not | ||
| claim that you wrote the original software. If you use this software | ||
| in a product, an acknowledgment in the product documentation would be | ||
| appreciated but is not required. | ||
| 2. Altered source versions must be plainly marked as such, and must not be | ||
| misrepresented as being the original software. | ||
| 3. This notice may not be removed or altered from any source distribution. | ||
| */ | ||
| #ifndef SDL_openxrdyn_h_ | ||
| #define SDL_openxrdyn_h_ | ||
|
|
||
| #include "SDL_internal.h" | ||
|
|
||
| #include "openxr/openxr.h" | ||
| #include "openxr/openxr_platform.h" | ||
|
|
||
| #define SDL_OPENXR_CHECK_VERSION(x, y, z) \ | ||
| (XR_VERSION_MAJOR(XR_CURRENT_API_VERSION) > x || \ | ||
| (XR_VERSION_MAJOR(XR_CURRENT_API_VERSION) == x && XR_VERSION_MINOR(XR_CURRENT_API_VERSION) > y) || \ | ||
| (XR_VERSION_MAJOR(XR_CURRENT_API_VERSION) == x && XR_VERSION_MINOR(XR_CURRENT_API_VERSION) == y && XR_VERSION_PATCH(XR_CURRENT_API_VERSION) >= z)) | ||
|
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||
| #ifdef __cplusplus | ||
| extern "C" { | ||
| #endif | ||
|
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| typedef struct XrInstancePfns { | ||
| #define SDL_OPENXR_INSTANCE_SYM(name) \ | ||
| PFN_##name name; | ||
| #include "SDL_openxrsym.h" | ||
| } XrInstancePfns; | ||
|
|
||
| extern bool SDL_OPENXR_LoadLoaderSymbols(void); | ||
| extern void SDL_OPENXR_UnloadLoaderSymbols(void); | ||
|
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| extern XrInstancePfns *SDL_OPENXR_LoadInstanceSymbols(XrInstance instance); | ||
|
|
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| /* Define the function pointers */ | ||
| #define SDL_OPENXR_SYM(name) \ | ||
| extern PFN_##name OPENXR_##name; | ||
| #include "SDL_openxrsym.h" | ||
|
|
||
| #define xrGetInstanceProcAddr OPENXR_xrGetInstanceProcAddr | ||
| #define xrEnumerateInstanceExtensionProperties OPENXR_xrEnumerateInstanceExtensionProperties | ||
| #define xrCreateInstance OPENXR_xrCreateInstance | ||
|
|
||
| #ifdef __cplusplus | ||
| } | ||
| #endif | ||
|
|
||
| #endif // SDL_openxrdyn_h_ |
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