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#include <X11/Xlib.h>
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#include <iostream>
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#include <array>
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#include <thread>
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#include <vector>
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#include <algorithm>
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#include <atomic>
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#include <cstring>
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#include "real_dlsym.h"
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#include "loaders/loader_glx.h"
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#include "loaders/loader_x11.h"
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#include "mesa/util/macros.h"
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#include "mesa/util/os_time.h"
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#include "blacklist.h"
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#include <chrono>
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#include <iomanip>
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#include "imgui_hud.h"
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using namespace MangoHud::GL;
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#define EXPORT_C_(type) extern "C" __attribute__((__visibility__("default"))) type
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EXPORT_C_(void *) glXGetProcAddress(const unsigned char* procName);
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EXPORT_C_(void *) glXGetProcAddressARB(const unsigned char* procName);
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#ifndef GLX_WIDTH
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#define GLX_WIDTH 0x801D
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#define GLX_HEIGTH 0x801E
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#endif
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static glx_loader glx;
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static std::atomic<int> refcnt (0);
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void* get_glx_proc_address(const char* name) {
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glx.Load();
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void *func = nullptr;
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if (glx.GetProcAddress)
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func = glx.GetProcAddress( (const unsigned char*) name );
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if (!func && glx.GetProcAddressARB)
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func = glx.GetProcAddressARB( (const unsigned char*) name );
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if (!func)
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func = get_proc_address( name );
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if (!func) {
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std::cerr << "MANGOHUD: Failed to get function '" << name << "'" << std::endl;
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}
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return func;
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}
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EXPORT_C_(void *) glXCreateContext(void *dpy, void *vis, void *shareList, int direct)
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{
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glx.Load();
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void *ctx = glx.CreateContext(dpy, vis, shareList, direct);
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if (ctx)
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refcnt++;
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#ifndef NDEBUG
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std::cerr << __func__ << ":" << ctx << std::endl;
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#endif
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return ctx;
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}
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EXPORT_C_(void *) glXCreateContextAttribs(void *dpy, void *config,void *share_context, int direct, const int *attrib_list)
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{
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glx.Load();
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void *ctx = glx.CreateContextAttribs(dpy, config, share_context, direct, attrib_list);
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if (ctx)
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refcnt++;
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#ifndef NDEBUG
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std::cerr << __func__ << ":" << ctx << std::endl;
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#endif
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return ctx;
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}
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EXPORT_C_(void *) glXCreateContextAttribsARB(void *dpy, void *config,void *share_context, int direct, const int *attrib_list)
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{
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glx.Load();
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void *ctx = glx.CreateContextAttribsARB(dpy, config, share_context, direct, attrib_list);
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if (ctx)
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refcnt++;
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#ifndef NDEBUG
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std::cerr << __func__ << ":" << ctx << std::endl;
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#endif
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return ctx;
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}
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EXPORT_C_(void) glXDestroyContext(void *dpy, void *ctx)
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{
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glx.Load();
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glx.DestroyContext(dpy, ctx);
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refcnt--;
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if (refcnt <= 0)
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imgui_shutdown();
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#ifndef NDEBUG
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std::cerr << __func__ << ":" << ctx << std::endl;
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#endif
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}
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EXPORT_C_(int) glXMakeCurrent(void* dpy, void* drawable, void* ctx) {
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glx.Load();
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#ifndef NDEBUG
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std::cerr << __func__ << ": " << drawable << ", " << ctx << std::endl;
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#endif
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int ret = glx.MakeCurrent(dpy, drawable, ctx);
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if (!is_blacklisted()) {
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if (ret) {
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imgui_set_context(ctx);
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#ifndef NDEBUG
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std::cerr << "MANGOHUD: GL ref count: " << refcnt << "\n";
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#endif
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}
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if (params.gl_vsync >= -1) {
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if (glx.SwapIntervalEXT)
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glx.SwapIntervalEXT(dpy, drawable, params.gl_vsync);
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if (glx.SwapIntervalSGI)
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glx.SwapIntervalSGI(params.gl_vsync);
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if (glx.SwapIntervalMESA)
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glx.SwapIntervalMESA(params.gl_vsync);
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}
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}
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return ret;
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}
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static void do_imgui_swap(void *dpy, void *drawable)
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{
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if (!is_blacklisted()) {
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imgui_create(glx.GetCurrentContext());
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unsigned int width = -1, height = -1;
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glx.QueryDrawable(dpy, drawable, GLX_WIDTH, &width);
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glx.QueryDrawable(dpy, drawable, GLX_HEIGTH, &height);
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/*GLint vp[4]; glGetIntegerv (GL_VIEWPORT, vp);
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width = vp[2];
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height = vp[3];*/
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imgui_render(width, height);
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}
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}
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EXPORT_C_(void) glXSwapBuffers(void* dpy, void* drawable) {
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glx.Load();
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do_imgui_swap(dpy, drawable);
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glx.SwapBuffers(dpy, drawable);
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using namespace std::chrono_literals;
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if (!is_blacklisted() && fps_limit_stats.targetFrameTime > 0s){
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fps_limit_stats.frameStart = Clock::now();
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FpsLimiter(fps_limit_stats);
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fps_limit_stats.frameEnd = Clock::now();
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}
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}
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EXPORT_C_(int64_t) glXSwapBuffersMscOML(void* dpy, void* drawable, int64_t target_msc, int64_t divisor, int64_t remainder)
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{
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glx.Load();
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do_imgui_swap(dpy, drawable);
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int64_t ret = glx.SwapBuffersMscOML(dpy, drawable, target_msc, divisor, remainder);
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using namespace std::chrono_literals;
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if (!is_blacklisted() && fps_limit_stats.targetFrameTime > 0s){
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fps_limit_stats.frameStart = Clock::now();
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FpsLimiter(fps_limit_stats);
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fps_limit_stats.frameEnd = Clock::now();
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}
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return ret;
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}
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EXPORT_C_(void) glXSwapIntervalEXT(void *dpy, void *draw, int interval) {
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#ifndef NDEBUG
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std::cerr << __func__ << ": " << interval << std::endl;
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#endif
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glx.Load();
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if (!is_blacklisted() && params.gl_vsync >= 0)
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interval = params.gl_vsync;
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glx.SwapIntervalEXT(dpy, draw, interval);
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}
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EXPORT_C_(int) glXSwapIntervalSGI(int interval) {
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#ifndef NDEBUG
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std::cerr << __func__ << ": " << interval << std::endl;
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#endif
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glx.Load();
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if (!is_blacklisted() && params.gl_vsync >= 0)
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interval = params.gl_vsync;
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return glx.SwapIntervalSGI(interval);
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}
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EXPORT_C_(int) glXSwapIntervalMESA(unsigned int interval) {
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#ifndef NDEBUG
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std::cerr << __func__ << ": " << interval << std::endl;
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#endif
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glx.Load();
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if (!is_blacklisted() && params.gl_vsync >= 0)
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interval = (unsigned int)params.gl_vsync;
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return glx.SwapIntervalMESA(interval);
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}
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EXPORT_C_(int) glXGetSwapIntervalMESA() {
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glx.Load();
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int interval = glx.GetSwapIntervalMESA();
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if (!is_blacklisted()) {
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static bool first_call = true;
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if (first_call) {
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first_call = false;
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if (params.gl_vsync >= 0) {
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interval = params.gl_vsync;
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glx.SwapIntervalMESA(interval);
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}
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}
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}
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#ifndef NDEBUG
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std::cerr << __func__ << ": " << interval << std::endl;
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#endif
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return interval;
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}
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struct func_ptr {
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const char *name;
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void *ptr;
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};
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static std::array<const func_ptr, 13> name_to_funcptr_map = {{
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#define ADD_HOOK(fn) { #fn, (void *) fn }
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ADD_HOOK(glXGetProcAddress),
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ADD_HOOK(glXGetProcAddressARB),
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ADD_HOOK(glXCreateContextAttribs),
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ADD_HOOK(glXCreateContextAttribsARB),
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ADD_HOOK(glXCreateContext),
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ADD_HOOK(glXDestroyContext),
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ADD_HOOK(glXMakeCurrent),
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ADD_HOOK(glXSwapBuffers),
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ADD_HOOK(glXSwapBuffersMscOML),
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ADD_HOOK(glXSwapIntervalEXT),
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ADD_HOOK(glXSwapIntervalSGI),
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ADD_HOOK(glXSwapIntervalMESA),
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ADD_HOOK(glXGetSwapIntervalMESA),
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#undef ADD_HOOK
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}};
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EXPORT_C_(void *) mangohud_find_glx_ptr(const char *name)
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{
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if (is_blacklisted())
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return nullptr;
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for (auto& func : name_to_funcptr_map) {
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if (strcmp(name, func.name) == 0)
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return func.ptr;
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}
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return nullptr;
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}
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EXPORT_C_(void *) glXGetProcAddress(const unsigned char* procName) {
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//std::cerr << __func__ << ":" << procName << std::endl;
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void* func = mangohud_find_glx_ptr( (const char*)procName );
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if (func)
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return func;
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return get_glx_proc_address((const char*)procName);
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}
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EXPORT_C_(void *) glXGetProcAddressARB(const unsigned char* procName) {
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//std::cerr << __func__ << ":" << procName << std::endl;
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void* func = mangohud_find_glx_ptr( (const char*)procName );
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if (func)
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return func;
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return get_glx_proc_address((const char*)procName);
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}
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