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64 lines
1.7 KiB
C++
64 lines
1.7 KiB
C++
#include <stdio.h>
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#include <stdlib.h>
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#include <dlfcn.h>
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#include <link.h>
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#include "real_dlsym.h"
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#include <string.h>
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#include <unistd.h>
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#include <string>
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void *egl_handle = NULL;
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EXPORT_C_(void*) dlsym(void * handle, const char * name)
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{
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static void *(*find_glx_ptr)(const char *name) = nullptr;
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static void *(*find_egl_ptr)(const char *name) = nullptr;
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if (!find_glx_ptr)
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find_glx_ptr = reinterpret_cast<decltype(find_glx_ptr)> (real_dlsym(RTLD_NEXT, "mangohud_find_glx_ptr"));
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if (!find_egl_ptr)
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find_egl_ptr = reinterpret_cast<decltype(find_egl_ptr)> (real_dlsym(RTLD_NEXT, "mangohud_find_egl_ptr"));
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char path_real[4096] = {0};
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//pick a libEGL to use since ANGLE uses the same file name
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if(handle != RTLD_DEFAULT && handle != RTLD_NEXT)
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{
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struct link_map *path;
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dlinfo(handle, RTLD_DI_LINKMAP, &path);
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int ret = readlink(path->l_name, path_real, 4096);
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if (ret < 0) {
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strcpy(path_real, path->l_name);
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}
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if (strstr(path_real, "libEGL") && !egl_handle) {
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egl_handle = handle;
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}
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}
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void* func = nullptr;
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void* real_func = real_dlsym(handle, name);
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if (find_glx_ptr && real_func) {
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func = find_glx_ptr(name);
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if (func) {
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//fprintf(stderr,"%s: local: %s\n", __func__ , name);
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return func;
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}
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}
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if (find_egl_ptr && real_func && egl_handle == handle) {
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fprintf(stderr, "name %s\n", name);
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func = find_egl_ptr(name);
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if (func) {
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//fprintf(stderr,"%s: local: %s\n", __func__ , name);
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return func;
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}
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}
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//fprintf(stderr,"%s: foreign: %s\n", __func__ , name);
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return real_func;
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}
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