Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1034 insertions, 0 deletions

diff --git a/toolkit/xre/glxtest/glxtest.cpp b/toolkit/xre/glxtest/glxtest.cpp
new file mode 100644
index 0000000000..33a21c11f7
--- /dev/null
+++ b/toolkit/xre/glxtest/glxtest.cpp
@@ -0,0 +1,1034 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: sw=2 ts=8 et :
+ */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// Explanation: See bug 639842. Safely getting GL driver info on X11 is hard,
+// because the only way to do that is to create a GL context and call
+// glGetString(), but with bad drivers, just creating a GL context may crash.
+//
+// This file implements the idea to do that in a separate process.
+//
+// The only non-static function here is fire_glxtest_process(). It creates a
+// pipe, publishes its 'read' end as the mozilla::widget::glxtest_pipe global
+// variable, forks, and runs that GLX probe in the child process, which runs the
+// childgltest() static function. This creates a X connection, a GLX context,
+// calls glGetString, and writes that to the 'write' end of the pipe.
+
+#include <cstdio>
+#include <cstdlib>
+#include <dlfcn.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <vector>
+#include <stdint.h>
+#include <string.h>
+#include <stdarg.h>
+
+#ifdef MOZ_WAYLAND
+#  include <gdk/gdk.h>
+#endif
+
+#if defined(MOZ_ASAN) || defined(FUZZING)
+#  include <signal.h>
+#endif
+
+#ifdef __SUNPRO_CC
+#  include <stdio.h>
+#endif
+
+#ifdef MOZ_X11
+#  include "X11/Xlib.h"
+#  include "X11/Xutil.h"
+#  include <X11/extensions/Xrandr.h>
+#endif
+
+#include <vector>
+#include <sys/wait.h>
+#include "mozilla/ScopeExit.h"
+#include "mozilla/Types.h"
+
+#include "mozilla/GfxInfoUtils.h"
+
+#ifdef MOZ_X11
+// stuff from glx.h
+typedef struct __GLXcontextRec* GLXContext;
+typedef XID GLXPixmap;
+typedef XID GLXDrawable;
+/* GLX 1.3 and later */
+typedef struct __GLXFBConfigRec* GLXFBConfig;
+typedef XID GLXFBConfigID;
+typedef XID GLXContextID;
+typedef XID GLXWindow;
+typedef XID GLXPbuffer;
+#  define GLX_RGBA 4
+#  define GLX_RED_SIZE 8
+#  define GLX_GREEN_SIZE 9
+#  define GLX_BLUE_SIZE 10
+#  define GLX_DOUBLEBUFFER 5
+#endif
+
+// stuff from gl.h
+typedef uint8_t GLubyte;
+typedef uint32_t GLenum;
+#define GL_VENDOR 0x1F00
+#define GL_RENDERER 0x1F01
+#define GL_VERSION 0x1F02
+
+// GLX_MESA_query_renderer
+// clang-format off
+#define GLX_RENDERER_VENDOR_ID_MESA                            0x8183
+#define GLX_RENDERER_DEVICE_ID_MESA                            0x8184
+#define GLX_RENDERER_VERSION_MESA                              0x8185
+#define GLX_RENDERER_ACCELERATED_MESA                          0x8186
+#define GLX_RENDERER_VIDEO_MEMORY_MESA                         0x8187
+#define GLX_RENDERER_UNIFIED_MEMORY_ARCHITECTURE_MESA          0x8188
+#define GLX_RENDERER_PREFERRED_PROFILE_MESA                    0x8189
+#define GLX_RENDERER_OPENGL_CORE_PROFILE_VERSION_MESA          0x818A
+#define GLX_RENDERER_OPENGL_COMPATIBILITY_PROFILE_VERSION_MESA 0x818B
+#define GLX_RENDERER_OPENGL_ES_PROFILE_VERSION_MESA            0x818C
+#define GLX_RENDERER_OPENGL_ES2_PROFILE_VERSION_MESA           0x818D
+#define GLX_RENDERER_ID_MESA                                   0x818E
+// clang-format on
+
+// stuff from egl.h
+typedef intptr_t EGLAttrib;
+typedef int EGLBoolean;
+typedef void* EGLConfig;
+typedef void* EGLContext;
+typedef void* EGLDeviceEXT;
+typedef void* EGLDisplay;
+typedef unsigned int EGLenum;
+typedef int EGLint;
+typedef void* EGLNativeDisplayType;
+typedef void* EGLSurface;
+typedef void* (*PFNEGLGETPROCADDRESS)(const char*);
+
+#define EGL_NO_CONTEXT nullptr
+#define EGL_NO_SURFACE nullptr
+#define EGL_FALSE 0
+#define EGL_TRUE 1
+#define EGL_OPENGL_ES2_BIT 0x0004
+#define EGL_BLUE_SIZE 0x3022
+#define EGL_GREEN_SIZE 0x3023
+#define EGL_RED_SIZE 0x3024
+#define EGL_NONE 0x3038
+#define EGL_RENDERABLE_TYPE 0x3040
+#define EGL_VENDOR 0x3053
+#define EGL_EXTENSIONS 0x3055
+#define EGL_CONTEXT_MAJOR_VERSION 0x3098
+#define EGL_OPENGL_ES_API 0x30A0
+#define EGL_OPENGL_API 0x30A2
+#define EGL_DEVICE_EXT 0x322C
+#define EGL_DRM_DEVICE_FILE_EXT 0x3233
+#define EGL_DRM_RENDER_NODE_FILE_EXT 0x3377
+
+// stuff from xf86drm.h
+#define DRM_NODE_RENDER 2
+#define DRM_NODE_MAX 3
+
+typedef struct _drmPciDeviceInfo {
+  uint16_t vendor_id;
+  uint16_t device_id;
+  uint16_t subvendor_id;
+  uint16_t subdevice_id;
+  uint8_t revision_id;
+} drmPciDeviceInfo, *drmPciDeviceInfoPtr;
+
+typedef struct _drmDevice {
+  char** nodes;
+  int available_nodes;
+  int bustype;
+  union {
+    void* pci;
+    void* usb;
+    void* platform;
+    void* host1x;
+  } businfo;
+  union {
+    drmPciDeviceInfoPtr pci;
+    void* usb;
+    void* platform;
+    void* host1x;
+  } deviceinfo;
+} drmDevice, *drmDevicePtr;
+
+// Open libGL and load needed symbols
+#if defined(__OpenBSD__) || defined(__NetBSD__)
+#  define LIBGL_FILENAME "libGL.so"
+#  define LIBGLES_FILENAME "libGLESv2.so"
+#  define LIBEGL_FILENAME "libEGL.so"
+#  define LIBDRM_FILENAME "libdrm.so"
+#else
+#  define LIBGL_FILENAME "libGL.so.1"
+#  define LIBGLES_FILENAME "libGLESv2.so.2"
+#  define LIBEGL_FILENAME "libEGL.so.1"
+#  define LIBDRM_FILENAME "libdrm.so.2"
+#endif
+
+#ifdef MOZ_X11
+static int x_error_handler(Display*, XErrorEvent* ev) {
+  record_value(
+      "ERROR\nX error, error_code=%d, "
+      "request_code=%d, minor_code=%d\n",
+      ev->error_code, ev->request_code, ev->minor_code);
+  record_flush();
+  _exit(EXIT_FAILURE);
+}
+#endif
+
+// childgltest is declared inside extern "C" so that the name is not mangled.
+// The name is used in build/valgrind/x86_64-pc-linux-gnu.sup to suppress
+// memory leak errors because we run it inside a short lived fork and we don't
+// care about leaking memory
+extern "C" {
+
+#define PCI_FILL_IDENT 0x0001
+#define PCI_FILL_CLASS 0x0020
+#define PCI_BASE_CLASS_DISPLAY 0x03
+
+static void get_pci_status() {
+  log("GLX_TEST: get_pci_status start\n");
+
+  if (access("/sys/bus/pci/", F_OK) != 0 &&
+      access("/sys/bus/pci_express/", F_OK) != 0) {
+    record_warning("cannot access /sys/bus/pci");
+    return;
+  }
+
+  void* libpci = dlopen("libpci.so.3", RTLD_LAZY);
+  if (!libpci) {
+    libpci = dlopen("libpci.so", RTLD_LAZY);
+  }
+  if (!libpci) {
+    record_warning("libpci missing");
+    return;
+  }
+  auto release = mozilla::MakeScopeExit([&] { dlclose(libpci); });
+
+  typedef struct pci_dev {
+    struct pci_dev* next;
+    uint16_t domain_16;
+    uint8_t bus, dev, func;
+    unsigned int known_fields;
+    uint16_t vendor_id, device_id;
+    uint16_t device_class;
+  } pci_dev;
+
+  typedef struct pci_access {
+    unsigned int method;
+    int writeable;
+    int buscentric;
+    char* id_file_name;
+    int free_id_name;
+    int numeric_ids;
+    unsigned int id_lookup_mode;
+    int debugging;
+    void* error;
+    void* warning;
+    void* debug;
+    pci_dev* devices;
+  } pci_access;
+
+  typedef pci_access* (*PCIALLOC)(void);
+  PCIALLOC pci_alloc = cast<PCIALLOC>(dlsym(libpci, "pci_alloc"));
+
+  typedef void (*PCIINIT)(pci_access*);
+  PCIINIT pci_init = cast<PCIINIT>(dlsym(libpci, "pci_init"));
+
+  typedef void (*PCICLEANUP)(pci_access*);
+  PCICLEANUP pci_cleanup = cast<PCICLEANUP>(dlsym(libpci, "pci_cleanup"));
+
+  typedef void (*PCISCANBUS)(pci_access*);
+  PCISCANBUS pci_scan_bus = cast<PCISCANBUS>(dlsym(libpci, "pci_scan_bus"));
+
+  typedef void (*PCIFILLINFO)(pci_dev*, int);
+  PCIFILLINFO pci_fill_info = cast<PCIFILLINFO>(dlsym(libpci, "pci_fill_info"));
+
+  if (!pci_alloc || !pci_cleanup || !pci_scan_bus || !pci_fill_info) {
+    dlclose(libpci);
+    record_warning("libpci missing methods");
+    return;
+  }
+
+  pci_access* pacc = pci_alloc();
+  if (!pacc) {
+    record_warning("libpci alloc failed");
+    return;
+  }
+
+  pci_init(pacc);
+  pci_scan_bus(pacc);
+
+  for (pci_dev* dev = pacc->devices; dev; dev = dev->next) {
+    pci_fill_info(dev, PCI_FILL_IDENT | PCI_FILL_CLASS);
+    if (dev->device_class >> 8 == PCI_BASE_CLASS_DISPLAY && dev->vendor_id &&
+        dev->device_id) {
+      record_value("PCI_VENDOR_ID\n0x%04x\nPCI_DEVICE_ID\n0x%04x\n",
+                   dev->vendor_id, dev->device_id);
+    }
+  }
+
+  pci_cleanup(pacc);
+
+  log("GLX_TEST: get_pci_status finished\n");
+}
+
+#ifdef MOZ_WAYLAND
+static void set_render_device_path(const char* render_device_path) {
+  record_value("DRM_RENDERDEVICE\n%s\n", render_device_path);
+}
+
+static bool device_has_name(const drmDevice* device, const char* name) {
+  for (size_t i = 0; i < DRM_NODE_MAX; i++) {
+    if (!(device->available_nodes & (1 << i))) {
+      continue;
+    }
+    if (strcmp(device->nodes[i], name) == 0) {
+      return true;
+    }
+  }
+  return false;
+}
+
+static bool get_render_name(const char* name) {
+  void* libdrm = dlopen(LIBDRM_FILENAME, RTLD_LAZY);
+  if (!libdrm) {
+    record_warning("Failed to open libdrm");
+    return false;
+  }
+  auto release = mozilla::MakeScopeExit([&] { dlclose(libdrm); });
+
+  typedef int (*DRMGETDEVICES2)(uint32_t, drmDevicePtr*, int);
+  DRMGETDEVICES2 drmGetDevices2 =
+      cast<DRMGETDEVICES2>(dlsym(libdrm, "drmGetDevices2"));
+
+  typedef void (*DRMFREEDEVICE)(drmDevicePtr*);
+  DRMFREEDEVICE drmFreeDevice =
+      cast<DRMFREEDEVICE>(dlsym(libdrm, "drmFreeDevice"));
+
+  if (!drmGetDevices2 || !drmFreeDevice) {
+    record_warning(
+        "libdrm missing methods for drmGetDevices2 or drmFreeDevice");
+    return false;
+  }
+
+  uint32_t flags = 0;
+  int devices_len = drmGetDevices2(flags, nullptr, 0);
+  if (devices_len < 0) {
+    record_warning("drmGetDevices2 failed");
+    return false;
+  }
+  drmDevice** devices = (drmDevice**)calloc(devices_len, sizeof(drmDevice*));
+  if (!devices) {
+    record_warning("Allocation error");
+    return false;
+  }
+  devices_len = drmGetDevices2(flags, devices, devices_len);
+  if (devices_len < 0) {
+    free(devices);
+    record_warning("drmGetDevices2 failed");
+    return false;
+  }
+
+  const drmDevice* match = nullptr;
+  for (int i = 0; i < devices_len; i++) {
+    if (device_has_name(devices[i], name)) {
+      match = devices[i];
+      break;
+    }
+  }
+
+  // Fallback path for split kms/render devices - if only one drm render node
+  // exists it's most likely the one we're looking for.
+  if (match && !(match->available_nodes & (1 << DRM_NODE_RENDER))) {
+    match = nullptr;
+    for (int i = 0; i < devices_len; i++) {
+      if (devices[i]->available_nodes & (1 << DRM_NODE_RENDER)) {
+        if (!match) {
+          match = devices[i];
+        } else {
+          // more than one candidate found, stop trying.
+          match = nullptr;
+          break;
+        }
+      }
+    }
+    if (match) {
+      record_warning(
+          "DRM render node not clearly detectable. Falling back to using the "
+          "only one that was found.");
+    } else {
+      record_warning("DRM device has no render node");
+    }
+  }
+
+  bool result = false;
+  if (!match) {
+    record_warning("Cannot find DRM device");
+  } else {
+    set_render_device_path(match->nodes[DRM_NODE_RENDER]);
+    record_value(
+        "MESA_VENDOR_ID\n0x%04x\n"
+        "MESA_DEVICE_ID\n0x%04x\n",
+        match->deviceinfo.pci->vendor_id, match->deviceinfo.pci->device_id);
+    result = true;
+  }
+
+  for (int i = 0; i < devices_len; i++) {
+    drmFreeDevice(&devices[i]);
+  }
+  free(devices);
+  return result;
+}
+#endif
+
+static bool get_egl_gl_status(EGLDisplay dpy,
+                              PFNEGLGETPROCADDRESS eglGetProcAddress) {
+  typedef EGLBoolean (*PFNEGLCHOOSECONFIGPROC)(
+      EGLDisplay dpy, EGLint const* attrib_list, EGLConfig* configs,
+      EGLint config_size, EGLint* num_config);
+  PFNEGLCHOOSECONFIGPROC eglChooseConfig =
+      cast<PFNEGLCHOOSECONFIGPROC>(eglGetProcAddress("eglChooseConfig"));
+
+  typedef EGLBoolean (*PFNEGLBINDAPIPROC)(EGLint api);
+  PFNEGLBINDAPIPROC eglBindAPI =
+      cast<PFNEGLBINDAPIPROC>(eglGetProcAddress("eglBindAPI"));
+
+  typedef EGLContext (*PFNEGLCREATECONTEXTPROC)(
+      EGLDisplay dpy, EGLConfig config, EGLContext share_context,
+      EGLint const* attrib_list);
+  PFNEGLCREATECONTEXTPROC eglCreateContext =
+      cast<PFNEGLCREATECONTEXTPROC>(eglGetProcAddress("eglCreateContext"));
+
+  typedef EGLBoolean (*PFNEGLDESTROYCONTEXTPROC)(EGLDisplay dpy,
+                                                 EGLContext ctx);
+  PFNEGLDESTROYCONTEXTPROC eglDestroyContext =
+      cast<PFNEGLDESTROYCONTEXTPROC>(eglGetProcAddress("eglDestroyContext"));
+
+  typedef EGLBoolean (*PFNEGLMAKECURRENTPROC)(
+      EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext context);
+  PFNEGLMAKECURRENTPROC eglMakeCurrent =
+      cast<PFNEGLMAKECURRENTPROC>(eglGetProcAddress("eglMakeCurrent"));
+
+  typedef const char* (*PFNEGLQUERYDEVICESTRINGEXTPROC)(EGLDeviceEXT device,
+                                                        EGLint name);
+  PFNEGLQUERYDEVICESTRINGEXTPROC eglQueryDeviceStringEXT =
+      cast<PFNEGLQUERYDEVICESTRINGEXTPROC>(
+          eglGetProcAddress("eglQueryDeviceStringEXT"));
+
+  typedef EGLBoolean (*PFNEGLQUERYDISPLAYATTRIBEXTPROC)(
+      EGLDisplay dpy, EGLint name, EGLAttrib* value);
+  PFNEGLQUERYDISPLAYATTRIBEXTPROC eglQueryDisplayAttribEXT =
+      cast<PFNEGLQUERYDISPLAYATTRIBEXTPROC>(
+          eglGetProcAddress("eglQueryDisplayAttribEXT"));
+
+  log("GLX_TEST: get_egl_gl_status start\n");
+
+  if (!eglChooseConfig || !eglCreateContext || !eglDestroyContext ||
+      !eglMakeCurrent || !eglQueryDeviceStringEXT) {
+    record_warning("libEGL missing methods for GL test");
+    return false;
+  }
+
+  typedef GLubyte* (*PFNGLGETSTRING)(GLenum);
+  PFNGLGETSTRING glGetString =
+      cast<PFNGLGETSTRING>(eglGetProcAddress("glGetString"));
+
+#if defined(__arm__) || defined(__aarch64__)
+  bool useGles = true;
+#else
+  bool useGles = false;
+#endif
+
+  std::vector<EGLint> attribs;
+  attribs.push_back(EGL_RED_SIZE);
+  attribs.push_back(8);
+  attribs.push_back(EGL_GREEN_SIZE);
+  attribs.push_back(8);
+  attribs.push_back(EGL_BLUE_SIZE);
+  attribs.push_back(8);
+  if (useGles) {
+    attribs.push_back(EGL_RENDERABLE_TYPE);
+    attribs.push_back(EGL_OPENGL_ES2_BIT);
+  }
+  attribs.push_back(EGL_NONE);
+
+  EGLConfig config;
+  EGLint num_config;
+  if (eglChooseConfig(dpy, attribs.data(), &config, 1, &num_config) ==
+      EGL_FALSE) {
+    record_warning("eglChooseConfig returned an error");
+    return false;
+  }
+
+  EGLenum api = useGles ? EGL_OPENGL_ES_API : EGL_OPENGL_API;
+  if (eglBindAPI(api) == EGL_FALSE) {
+    record_warning("eglBindAPI returned an error");
+    return false;
+  }
+
+  EGLint ctx_attrs[] = {EGL_CONTEXT_MAJOR_VERSION, 3, EGL_NONE};
+  EGLContext ectx = eglCreateContext(dpy, config, EGL_NO_CONTEXT, ctx_attrs);
+  if (!ectx) {
+    EGLint ctx_attrs_fallback[] = {EGL_CONTEXT_MAJOR_VERSION, 2, EGL_NONE};
+    ectx = eglCreateContext(dpy, config, EGL_NO_CONTEXT, ctx_attrs_fallback);
+    if (!ectx) {
+      record_warning("eglCreateContext returned an error");
+      return false;
+    }
+  }
+
+  if (eglMakeCurrent(dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, ectx) == EGL_FALSE) {
+    eglDestroyContext(dpy, ectx);
+    record_warning("eglMakeCurrent returned an error");
+    return false;
+  }
+  eglDestroyContext(dpy, ectx);
+
+  // Implementations disagree about whether eglGetProcAddress or dlsym
+  // should be used for getting functions from the actual API, see
+  // https://github.com/anholt/libepoxy/commit/14f24485e33816139398d1bd170d617703473738
+  void* libgl = nullptr;
+  if (!glGetString) {
+    libgl = dlopen(LIBGL_FILENAME, RTLD_LAZY);
+    if (!libgl) {
+      libgl = dlopen(LIBGLES_FILENAME, RTLD_LAZY);
+      if (!libgl) {
+        record_warning(LIBGL_FILENAME " and " LIBGLES_FILENAME " missing");
+        return false;
+      }
+    }
+
+    glGetString = cast<PFNGLGETSTRING>(dlsym(libgl, "glGetString"));
+    if (!glGetString) {
+      dlclose(libgl);
+      record_warning("libEGL, libGL and libGLESv2 are missing glGetString");
+      return false;
+    }
+  }
+  auto release = mozilla::MakeScopeExit([&] {
+    if (libgl) {
+      dlclose(libgl);
+    }
+  });
+
+  const GLubyte* versionString = glGetString(GL_VERSION);
+  const GLubyte* vendorString = glGetString(GL_VENDOR);
+  const GLubyte* rendererString = glGetString(GL_RENDERER);
+
+  if (versionString && vendorString && rendererString) {
+    record_value("VENDOR\n%s\nRENDERER\n%s\nVERSION\n%s\nTFP\nTRUE\n",
+                 vendorString, rendererString, versionString);
+  } else {
+    record_warning("EGL glGetString returned null");
+    return false;
+  }
+
+  EGLDeviceEXT device;
+  if (eglQueryDisplayAttribEXT(dpy, EGL_DEVICE_EXT, (EGLAttrib*)&device) ==
+      EGL_TRUE) {
+    const char* deviceExtensions =
+        eglQueryDeviceStringEXT(device, EGL_EXTENSIONS);
+    if (deviceExtensions &&
+        strstr(deviceExtensions, "EGL_MESA_device_software")) {
+      record_value("MESA_ACCELERATED\nFALSE\n");
+    } else {
+#ifdef MOZ_WAYLAND
+      const char* deviceString =
+          eglQueryDeviceStringEXT(device, EGL_DRM_DEVICE_FILE_EXT);
+      if (!deviceString || !get_render_name(deviceString)) {
+        const char* renderNodeString =
+            eglQueryDeviceStringEXT(device, EGL_DRM_RENDER_NODE_FILE_EXT);
+        if (renderNodeString) {
+          set_render_device_path(renderNodeString);
+        }
+      }
+#endif
+    }
+  }
+
+  log("GLX_TEST: get_egl_gl_status finished\n");
+  return true;
+}
+
+static bool get_egl_status(EGLNativeDisplayType native_dpy) {
+  log("GLX_TEST: get_egl_status start\n");
+
+  EGLDisplay dpy = nullptr;
+
+  typedef EGLBoolean (*PFNEGLTERMINATEPROC)(EGLDisplay dpy);
+  PFNEGLTERMINATEPROC eglTerminate = nullptr;
+
+  void* libegl = dlopen(LIBEGL_FILENAME, RTLD_LAZY);
+  if (!libegl) {
+    record_warning("libEGL missing");
+    return false;
+  }
+  auto release = mozilla::MakeScopeExit([&] {
+    if (dpy) {
+      eglTerminate(dpy);
+    }
+    // Unload libegl here causes ASAN/MemLeaks failures on Linux
+    // as libegl may not be meant to be unloaded runtime.
+    // See 1304156 for reference.
+    // dlclose(libegl);
+  });
+
+  PFNEGLGETPROCADDRESS eglGetProcAddress =
+      cast<PFNEGLGETPROCADDRESS>(dlsym(libegl, "eglGetProcAddress"));
+
+  if (!eglGetProcAddress) {
+    record_warning("no eglGetProcAddress");
+    return false;
+  }
+
+  typedef EGLDisplay (*PFNEGLGETDISPLAYPROC)(void* native_display);
+  PFNEGLGETDISPLAYPROC eglGetDisplay =
+      cast<PFNEGLGETDISPLAYPROC>(eglGetProcAddress("eglGetDisplay"));
+
+  typedef EGLBoolean (*PFNEGLINITIALIZEPROC)(EGLDisplay dpy, EGLint* major,
+                                             EGLint* minor);
+  PFNEGLINITIALIZEPROC eglInitialize =
+      cast<PFNEGLINITIALIZEPROC>(eglGetProcAddress("eglInitialize"));
+  eglTerminate = cast<PFNEGLTERMINATEPROC>(eglGetProcAddress("eglTerminate"));
+
+  if (!eglGetDisplay || !eglInitialize || !eglTerminate) {
+    record_warning("libEGL missing methods");
+    return false;
+  }
+
+  dpy = eglGetDisplay(native_dpy);
+  if (!dpy) {
+    record_warning("libEGL no display");
+    return false;
+  }
+
+  EGLint major, minor;
+  if (!eglInitialize(dpy, &major, &minor)) {
+    record_warning("libEGL initialize failed");
+    return false;
+  }
+
+  typedef const char* (*PFNEGLGETDISPLAYDRIVERNAMEPROC)(EGLDisplay dpy);
+  PFNEGLGETDISPLAYDRIVERNAMEPROC eglGetDisplayDriverName =
+      cast<PFNEGLGETDISPLAYDRIVERNAMEPROC>(
+          eglGetProcAddress("eglGetDisplayDriverName"));
+  if (eglGetDisplayDriverName) {
+    const char* driDriver = eglGetDisplayDriverName(dpy);
+    if (driDriver) {
+      record_value("DRI_DRIVER\n%s\n", driDriver);
+    }
+  }
+
+  bool ret = get_egl_gl_status(dpy, eglGetProcAddress);
+  log("GLX_TEST: get_egl_status finished with return: %d\n", ret);
+
+  return ret;
+}
+
+#ifdef MOZ_X11
+static void get_xrandr_info(Display* dpy) {
+  log("GLX_TEST: get_xrandr_info start\n");
+
+  // When running on remote X11 the xrandr version may be stuck on an ancient
+  // version. There are still setups using remote X11 out there, so make sure we
+  // don't crash.
+  int eventBase, errorBase, major, minor;
+  if (!XRRQueryExtension(dpy, &eventBase, &errorBase) ||
+      !XRRQueryVersion(dpy, &major, &minor) ||
+      !(major > 1 || (major == 1 && minor >= 4))) {
+    log("GLX_TEST: get_xrandr_info failed, old version.\n");
+    return;
+  }
+
+  Window root = RootWindow(dpy, DefaultScreen(dpy));
+  XRRProviderResources* pr = XRRGetProviderResources(dpy, root);
+  if (!pr) {
+    return;
+  }
+  XRRScreenResources* res = XRRGetScreenResourcesCurrent(dpy, root);
+  if (!res) {
+    XRRFreeProviderResources(pr);
+    return;
+  }
+  if (pr->nproviders != 0) {
+    record_value("DDX_DRIVER\n");
+    for (int i = 0; i < pr->nproviders; i++) {
+      XRRProviderInfo* info = XRRGetProviderInfo(dpy, res, pr->providers[i]);
+      if (info) {
+        record_value("%s%s", info->name, i == pr->nproviders - 1 ? ";\n" : ";");
+        XRRFreeProviderInfo(info);
+      }
+    }
+  }
+  XRRFreeScreenResources(res);
+  XRRFreeProviderResources(pr);
+
+  log("GLX_TEST: get_xrandr_info finished\n");
+}
+
+void glxtest() {
+  log("GLX_TEST: glxtest start\n");
+
+  Display* dpy = nullptr;
+  void* libgl = dlopen(LIBGL_FILENAME, RTLD_LAZY);
+  if (!libgl) {
+    record_error(LIBGL_FILENAME " missing");
+    return;
+  }
+  auto release = mozilla::MakeScopeExit([&] {
+    if (dpy) {
+#  ifdef MOZ_ASAN
+      XCloseDisplay(dpy);
+#  else
+      // This XSync call wanted to be instead:
+      //   XCloseDisplay(dpy);
+      // but this can cause 1-minute stalls on certain setups using Nouveau, see
+      // bug 973192
+      XSync(dpy, False);
+#  endif
+    }
+    dlclose(libgl);
+  });
+
+  typedef void* (*PFNGLXGETPROCADDRESS)(const char*);
+  PFNGLXGETPROCADDRESS glXGetProcAddress =
+      cast<PFNGLXGETPROCADDRESS>(dlsym(libgl, "glXGetProcAddress"));
+
+  if (!glXGetProcAddress) {
+    record_error("no glXGetProcAddress");
+    return;
+  }
+
+  typedef GLXFBConfig* (*PFNGLXQUERYEXTENSION)(Display*, int*, int*);
+  PFNGLXQUERYEXTENSION glXQueryExtension =
+      cast<PFNGLXQUERYEXTENSION>(glXGetProcAddress("glXQueryExtension"));
+
+  typedef GLXFBConfig* (*PFNGLXQUERYVERSION)(Display*, int*, int*);
+  PFNGLXQUERYVERSION glXQueryVersion =
+      cast<PFNGLXQUERYVERSION>(dlsym(libgl, "glXQueryVersion"));
+
+  typedef XVisualInfo* (*PFNGLXCHOOSEVISUAL)(Display*, int, int*);
+  PFNGLXCHOOSEVISUAL glXChooseVisual =
+      cast<PFNGLXCHOOSEVISUAL>(glXGetProcAddress("glXChooseVisual"));
+
+  typedef GLXContext (*PFNGLXCREATECONTEXT)(Display*, XVisualInfo*, GLXContext,
+                                            Bool);
+  PFNGLXCREATECONTEXT glXCreateContext =
+      cast<PFNGLXCREATECONTEXT>(glXGetProcAddress("glXCreateContext"));
+
+  typedef Bool (*PFNGLXMAKECURRENT)(Display*, GLXDrawable, GLXContext);
+  PFNGLXMAKECURRENT glXMakeCurrent =
+      cast<PFNGLXMAKECURRENT>(glXGetProcAddress("glXMakeCurrent"));
+
+  typedef void (*PFNGLXDESTROYCONTEXT)(Display*, GLXContext);
+  PFNGLXDESTROYCONTEXT glXDestroyContext =
+      cast<PFNGLXDESTROYCONTEXT>(glXGetProcAddress("glXDestroyContext"));
+
+  typedef GLubyte* (*PFNGLGETSTRING)(GLenum);
+  PFNGLGETSTRING glGetString =
+      cast<PFNGLGETSTRING>(glXGetProcAddress("glGetString"));
+
+  if (!glXQueryExtension || !glXQueryVersion || !glXChooseVisual ||
+      !glXCreateContext || !glXMakeCurrent || !glXDestroyContext ||
+      !glGetString) {
+    record_error(LIBGL_FILENAME " missing methods");
+    return;
+  }
+
+  ///// Open a connection to the X server /////
+  dpy = XOpenDisplay(nullptr);
+  if (!dpy) {
+    record_error("Unable to open a connection to the X server");
+    return;
+  }
+
+  ///// Check that the GLX extension is present /////
+  if (!glXQueryExtension(dpy, nullptr, nullptr)) {
+    record_error("GLX extension missing");
+    return;
+  }
+
+  XSetErrorHandler(x_error_handler);
+
+  ///// Get a visual /////
+  int attribs[] = {GLX_RGBA, GLX_RED_SIZE,  1, GLX_GREEN_SIZE,
+                   1,        GLX_BLUE_SIZE, 1, None};
+  XVisualInfo* vInfo = glXChooseVisual(dpy, DefaultScreen(dpy), attribs);
+  if (!vInfo) {
+    int attribs2[] = {GLX_RGBA, GLX_RED_SIZE,  1, GLX_GREEN_SIZE,
+                      1,        GLX_BLUE_SIZE, 1, GLX_DOUBLEBUFFER,
+                      None};
+    vInfo = glXChooseVisual(dpy, DefaultScreen(dpy), attribs2);
+    if (!vInfo) {
+      record_error("No visuals found");
+      return;
+    }
+  }
+
+  // using a X11 Window instead of a GLXPixmap does not crash
+  // fglrx in indirect rendering. bug 680644
+  Window window;
+  XSetWindowAttributes swa;
+  swa.colormap = XCreateColormap(dpy, RootWindow(dpy, vInfo->screen),
+                                 vInfo->visual, AllocNone);
+
+  swa.border_pixel = 0;
+  window = XCreateWindow(dpy, RootWindow(dpy, vInfo->screen), 0, 0, 16, 16, 0,
+                         vInfo->depth, InputOutput, vInfo->visual,
+                         CWBorderPixel | CWColormap, &swa);
+
+  ///// Get a GL context and make it current //////
+  GLXContext context = glXCreateContext(dpy, vInfo, nullptr, True);
+  glXMakeCurrent(dpy, window, context);
+
+  ///// Look for this symbol to determine texture_from_pixmap support /////
+  void* glXBindTexImageEXT = glXGetProcAddress("glXBindTexImageEXT");
+
+  ///// Get GL vendor/renderer/versions strings /////
+  const GLubyte* versionString = glGetString(GL_VERSION);
+  const GLubyte* vendorString = glGetString(GL_VENDOR);
+  const GLubyte* rendererString = glGetString(GL_RENDERER);
+
+  if (versionString && vendorString && rendererString) {
+    record_value("VENDOR\n%s\nRENDERER\n%s\nVERSION\n%s\nTFP\n%s\n",
+                 vendorString, rendererString, versionString,
+                 glXBindTexImageEXT ? "TRUE" : "FALSE");
+  } else {
+    record_error("glGetString returned null");
+  }
+
+  // If GLX_MESA_query_renderer is available, populate additional data.
+  typedef Bool (*PFNGLXQUERYCURRENTRENDERERINTEGERMESAPROC)(
+      int attribute, unsigned int* value);
+  PFNGLXQUERYCURRENTRENDERERINTEGERMESAPROC
+  glXQueryCurrentRendererIntegerMESAProc =
+      cast<PFNGLXQUERYCURRENTRENDERERINTEGERMESAPROC>(
+          glXGetProcAddress("glXQueryCurrentRendererIntegerMESA"));
+  if (glXQueryCurrentRendererIntegerMESAProc) {
+    unsigned int vendorId, deviceId, accelerated, videoMemoryMB;
+    glXQueryCurrentRendererIntegerMESAProc(GLX_RENDERER_VENDOR_ID_MESA,
+                                           &vendorId);
+    glXQueryCurrentRendererIntegerMESAProc(GLX_RENDERER_DEVICE_ID_MESA,
+                                           &deviceId);
+    glXQueryCurrentRendererIntegerMESAProc(GLX_RENDERER_ACCELERATED_MESA,
+                                           &accelerated);
+    glXQueryCurrentRendererIntegerMESAProc(GLX_RENDERER_VIDEO_MEMORY_MESA,
+                                           &videoMemoryMB);
+
+    // Truncate IDs to 4 digits- that's all PCI IDs are.
+    vendorId &= 0xFFFF;
+    deviceId &= 0xFFFF;
+
+    record_value(
+        "MESA_VENDOR_ID\n0x%04x\n"
+        "MESA_DEVICE_ID\n0x%04x\n"
+        "MESA_ACCELERATED\n%s\n"
+        "MESA_VRAM\n%dMB\n",
+        vendorId, deviceId, accelerated ? "TRUE" : "FALSE", videoMemoryMB);
+  }
+
+  // From Mesa's GL/internal/dri_interface.h, to be used by DRI clients.
+  typedef const char* (*PFNGLXGETSCREENDRIVERPROC)(Display* dpy, int scrNum);
+  PFNGLXGETSCREENDRIVERPROC glXGetScreenDriverProc =
+      cast<PFNGLXGETSCREENDRIVERPROC>(glXGetProcAddress("glXGetScreenDriver"));
+  if (glXGetScreenDriverProc) {
+    const char* driDriver = glXGetScreenDriverProc(dpy, DefaultScreen(dpy));
+    if (driDriver) {
+      record_value("DRI_DRIVER\n%s\n", driDriver);
+    }
+  }
+
+  // Get monitor and DDX driver information
+  get_xrandr_info(dpy);
+
+  ///// Clean up. Indeed, the parent process might fail to kill us (e.g. if it
+  ///// doesn't need to check GL info) so we might be staying alive for longer
+  ///// than expected, so it's important to consume as little memory as
+  ///// possible. Also we want to check that we're able to do that too without
+  ///// generating X errors.
+  glXMakeCurrent(dpy, None,
+                 nullptr);  // must release the GL context before destroying it
+  glXDestroyContext(dpy, context);
+  XDestroyWindow(dpy, window);
+  XFreeColormap(dpy, swa.colormap);
+  XFree(vInfo);
+
+  record_value("TEST_TYPE\nGLX\n");
+  log("GLX_TEST: glxtest finished\n");
+}
+
+bool x11_egltest() {
+  log("GLX_TEST: x11_egltest start\n");
+
+  Display* dpy = XOpenDisplay(nullptr);
+  if (!dpy) {
+    return false;
+  }
+#  ifdef MOZ_ASAN
+  auto release = mozilla::MakeScopeExit([&] {
+    // Bug 1715245: Closing the display connection here crashes on NV prop.
+    // drivers. Just leave it open, the process will exit shortly after anyway.
+    XCloseDisplay(dpy);
+  });
+#  endif
+
+  XSetErrorHandler(x_error_handler);
+
+  if (!get_egl_status(dpy)) {
+    return false;
+  }
+
+  // Bug 1667621: 30bit "Deep Color" is broken on EGL on Mesa (as of 2021/10).
+  // Disable all non-standard depths for the initial EGL roleout.
+  int screenCount = ScreenCount(dpy);
+  for (int idx = 0; idx < screenCount; idx++) {
+    if (DefaultDepth(dpy, idx) != 24) {
+      return false;
+    }
+  }
+
+  // Get monitor and DDX driver information
+  get_xrandr_info(dpy);
+
+  record_value("TEST_TYPE\nEGL\n");
+
+  log("GLX_TEST: x11_egltest finished\n");
+  return true;
+}
+#endif
+
+#ifdef MOZ_WAYLAND
+void wayland_egltest() {
+  log("GLX_TEST: wayland_egltest start\n");
+
+  static auto sWlDisplayConnect = (struct wl_display * (*)(const char*))
+      dlsym(RTLD_DEFAULT, "wl_display_connect");
+  static auto sWlDisplayRoundtrip =
+      (int (*)(struct wl_display*))dlsym(RTLD_DEFAULT, "wl_display_roundtrip");
+  static auto sWlDisplayDisconnect = (void (*)(struct wl_display*))dlsym(
+      RTLD_DEFAULT, "wl_display_disconnect");
+
+  if (!sWlDisplayConnect || !sWlDisplayRoundtrip || !sWlDisplayDisconnect) {
+    record_error("Missing Wayland libraries");
+    return;
+  }
+
+  // NOTE: returns false to fall back to X11 when the Wayland socket doesn't
+  // exist but fails with record_error if something actually went wrong
+  struct wl_display* dpy = sWlDisplayConnect(nullptr);
+  if (!dpy) {
+    record_error("Could not connect to wayland socket");
+    return;
+  }
+
+  if (!get_egl_status((EGLNativeDisplayType)dpy)) {
+    record_error("EGL test failed");
+  }
+
+  // This is enough to crash some broken NVIDIA prime + Wayland setups, see
+  // https://github.com/NVIDIA/egl-wayland/issues/41 and bug 1768260.
+  sWlDisplayRoundtrip(dpy);
+
+  sWlDisplayDisconnect(dpy);
+  record_value("TEST_TYPE\nEGL\n");
+  log("GLX_TEST: wayland_egltest finished\n");
+}
+#endif
+
+int childgltest(bool aWayland) {
+  log("GLX_TEST: childgltest start\n");
+
+  // Get a list of all GPUs from the PCI bus.
+  get_pci_status();
+
+#ifdef MOZ_WAYLAND
+  if (aWayland) {
+    wayland_egltest();
+  }
+#endif
+#ifdef MOZ_X11
+  if (!aWayland) {
+    // TODO: --display command line argument is not properly handled
+    if (!x11_egltest()) {
+      glxtest();
+    }
+  }
+#endif
+  // Finally write buffered data to the pipe.
+  record_flush();
+
+  log("GLX_TEST: childgltest finished\n");
+  return EXIT_SUCCESS;
+}
+
+}  // extern "C"
+
+static void PrintUsage() {
+  printf(
+      "Firefox OpenGL probe utility\n"
+      "\n"
+      "usage: glxtest [options]\n"
+      "\n"
+      "Options:\n"
+      "\n"
+      "  -h --help                 show this message\n"
+      "  -f --fd num               where to print output, default it stdout\n"
+      "  -w --wayland              probe OpenGL/EGL on Wayland (default is "
+      "X11)\n"
+      "\n");
+}
+
+int main(int argc, char** argv) {
+  struct option longOptions[] = {{"help", no_argument, nullptr, 'h'},
+                                 {"fd", required_argument, nullptr, 'f'},
+                                 {"wayland", no_argument, nullptr, 'w'},
+                                 {nullptr, 0, nullptr, 0}};
+  const char* shortOptions = "hf:w";
+  int c;
+  bool wayland = false;
+  while ((c = getopt_long(argc, argv, shortOptions, longOptions, nullptr)) !=
+         -1) {
+    switch (c) {
+      case 'w':
+        wayland = true;
+        break;
+      case 'f':
+        output_pipe = atoi(optarg);
+        break;
+      case 'h':
+#ifdef MOZ_WAYLAND
+        // Dummy call to mozgtk to prevent the linker from removing
+        // the dependency with --as-needed.
+        // see toolkit/library/moz.build for details.
+        gdk_display_get_default();
+#endif
+        PrintUsage();
+        return 0;
+      default:
+        break;
+    }
+  }
+  if (getenv("MOZ_AVOID_OPENGL_ALTOGETHER")) {
+    const char* msg = "ERROR\nMOZ_AVOID_OPENGL_ALTOGETHER envvar set";
+    MOZ_UNUSED(write(output_pipe, msg, strlen(msg)));
+    exit(EXIT_FAILURE);
+  }
+  const char* env = getenv("MOZ_GFX_DEBUG");
+  enable_logging = env && *env == '1';
+  if (!enable_logging) {
+    close_logging();
+  }
+#if defined(MOZ_ASAN) || defined(FUZZING)
+  // If handle_segv=1 (default), then glxtest crash will print a sanitizer
+  // report which can confuse the harness in fuzzing automation.
+  signal(SIGSEGV, SIG_DFL);
+#endif
+  return childgltest(wayland);
+}