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src/libandroid/native_window.c: [belongs in openxr_bio]: use dlopen/dlsym to avoid hard dependency on openxr loader

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This commit is contained in:
Mis012
2023-01-09 13:55:25 +01:00
parent b10bbaeae2
commit 0a9fe3caa9
1 changed files with 19 additions and 4 deletions
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23
src/libandroid/native_window.c
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@@ -45,6 +45,8 @@
#define XR_USE_PLATFORM_EGL
#include <openxr/openxr_platform.h>
#include <dlfcn.h>
#include <jni.h>
// FIXME: put the header in a common place
@@ -423,6 +425,19 @@ EGLSurface bionic_eglCreateWindowSurface(EGLDisplay display, EGLConfig config, s
// FIXME 2: this BLATANTLY belongs elsewhere
typedef XrResult(*xr_func)();
// avoid hard dependency on libopenxr_loader for the three functions that we only ever call when running a VR app
static void *openxr_loader_handle = NULL;
static inline __attribute__((__always_inline__)) XrResult xr_lazy_call(char *func_name, ...) {
if(!openxr_loader_handle) {
openxr_loader_handle = dlopen("libopenxr_loader.so.1", RTLD_LAZY);
}
xr_func func = dlsym(openxr_loader_handle, func_name);
return func(__builtin_va_arg_pack());
}
static void xrInitializeLoaderKHR_noop() //FIXME: does it really return void?
{
printf("STUB: xrInitializeLoaderKHR_noop called\n");
@@ -447,7 +462,7 @@ XrResult bionic_xrCreateSession(XrInstance instance, XrSessionCreateInfo *create
egl_bind.config = android_bind->config;
egl_bind.context = android_bind->context;
createInfo->next = &egl_bind;
xrCreateSession(instance, createInfo, session);
return xr_lazy_call("xrCreateSession", instance, createInfo, session);
}
@@ -458,14 +473,14 @@ XrResult bionic_xrGetInstanceProcAddr(XrInstance instance, const char *name, PFN
*func = xrInitializeLoaderKHR_noop;
return (XrResult)xrInitializeLoaderKHR_noop; //TODO: is this correct return value?
} else {
return xrGetInstanceProcAddr(instance, name, func);
return xr_lazy_call("xrGetInstanceProcAddr", instance, name, func);
}
}
void * bionic_xrCreateInstance(XrInstanceCreateInfo *createInfo, XrInstance *instance)
XrResult bionic_xrCreateInstance(XrInstanceCreateInfo *createInfo, XrInstance *instance)
{
const char* enabled_exts[2] = {"XR_KHR_opengl_es_enable", "XR_MNDX_egl_enable"};
createInfo->enabledExtensionCount = 2;
createInfo->enabledExtensionNames = enabled_exts;
xrCreateInstance(createInfo, instance);
return xr_lazy_call("xrCreateInstance", createInfo, instance);
}