The Tor Browser: gfx/gl/GLLibraryEGL.cpp@b8a032363ba2 (annotated)

gfx/gl/GLLibraryEGL.cpp@b8a032363ba2 (annotated)

gfx/gl/GLLibraryEGL.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* 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/. */
 #include "GLLibraryEGL.h"
 #include "gfxCrashReporterUtils.h"
 #include "mozilla/Preferences.h"
 #include "nsDirectoryServiceDefs.h"
 #include "nsDirectoryServiceUtils.h"
 #include "nsPrintfCString.h"
 #ifdef XP_WIN
 #include "nsWindowsHelpers.h"
 #endif
 #include "prenv.h"
 #include "GLContext.h"
 #include "gfxPrefs.h"
 namespace mozilla {
 namespace gl {
 GLLibraryEGL sEGLLibrary;
 // should match the order of EGLExtensions, and be null-terminated.
 static const char *sEGLExtensionNames[] = {
     "EGL_KHR_image_base",
     "EGL_KHR_image_pixmap",
     "EGL_KHR_gl_texture_2D_image",
     "EGL_KHR_lock_surface",
     "EGL_ANGLE_surface_d3d_texture_2d_share_handle",
     "EGL_EXT_create_context_robustness",
     "EGL_KHR_image",
     "EGL_KHR_fence_sync",
     nullptr
 };
 #if defined(ANDROID)
 static PRLibrary* LoadApitraceLibrary()
 {
     if (!gfxPrefs::UseApitrace()) {
         return nullptr;
     }
     static PRLibrary* sApitraceLibrary = nullptr;
     if (sApitraceLibrary)
         return sApitraceLibrary;
     nsCString logFile = Preferences::GetCString("gfx.apitrace.logfile");
     if (logFile.IsEmpty()) {
         logFile = "firefox.trace";
     }
     // The firefox process can't write to /data/local, but it can write
     // to $GRE_HOME/
     nsAutoCString logPath;
     logPath.AppendPrintf("%s/%s", getenv("GRE_HOME"), logFile.get());
     // apitrace uses the TRACE_FILE environment variable to determine where
     // to log trace output to
     printf_stderr("Logging GL tracing output to %s", logPath.get());
     setenv("TRACE_FILE", logPath.get(), false);
     printf_stderr("Attempting load of %s\n", APITRACE_LIB);
     sApitraceLibrary = PR_LoadLibrary(APITRACE_LIB);
     return sApitraceLibrary;
 }
 #endif // ANDROID
 #ifdef XP_WIN
 // see the comment in GLLibraryEGL::EnsureInitialized() for the rationale here.
 static PRLibrary*
 LoadLibraryForEGLOnWindows(const nsAString& filename)
 {
     nsCOMPtr<nsIFile> file;
 	nsresult rv = NS_GetSpecialDirectory(NS_GRE_DIR, getter_AddRefs(file));
     if (NS_FAILED(rv))
         return nullptr;
     file->Append(filename);
     PRLibrary* lib = nullptr;
     rv = file->Load(&lib);
     if (NS_FAILED(rv)) {
         nsPrintfCString msg("Failed to load %s - Expect EGL initialization to fail",
                             NS_LossyConvertUTF16toASCII(filename).get());
         NS_WARNING(msg.get());
     }
     return lib;
 }
 #endif // XP_WIN
 bool
 GLLibraryEGL::EnsureInitialized()
 {
     if (mInitialized) {
         return true;
     }
     mozilla::ScopedGfxFeatureReporter reporter("EGL");
 #ifdef XP_WIN
 #ifdef MOZ_WEBGL
     if (!mEGLLibrary) {
         // On Windows, the GLESv2, EGL and DXSDK libraries are shipped with libxul and
         // we should look for them there. We have to load the libs in this
         // order, because libEGL.dll depends on libGLESv2.dll which depends on the DXSDK
         // libraries. This matters especially for WebRT apps which are in a different directory.
         // See bug 760323 and bug 749459
 #ifndef MOZ_D3DCOMPILER_DLL
 #error MOZ_D3DCOMPILER_DLL should have been defined by the Makefile
 #endif
         // Windows 8.1 has d3dcompiler_47.dll in the system directory.
         // Try it first. Note that _46 will never be in the system
         // directory and we ship with at least _43. So there is no point
         // trying _46 and _43 in the system directory.
         if (!LoadLibrarySystem32(L"d3dcompiler_47.dll")) {
             // Fall back to the version that we shipped with.
             LoadLibraryForEGLOnWindows(NS_LITERAL_STRING(NS_STRINGIFY(MOZ_D3DCOMPILER_DLL)));
         }
         // intentionally leak the D3DCOMPILER_DLL library
         LoadLibraryForEGLOnWindows(NS_LITERAL_STRING("libGLESv2.dll"));
         // intentionally leak the libGLESv2.dll library
         mEGLLibrary = LoadLibraryForEGLOnWindows(NS_LITERAL_STRING("libEGL.dll"));
         if (!mEGLLibrary)
             return false;
     }
 #endif // MOZ_WEBGL
 #else // !Windows
     // On non-Windows (Android) we use system copies of libEGL. We look for
     // the APITrace lib, libEGL.so, and libEGL.so.1 in that order.
 #if defined(ANDROID)
     if (!mEGLLibrary)
         mEGLLibrary = LoadApitraceLibrary();
 #endif
     if (!mEGLLibrary) {
         printf_stderr("Attempting load of libEGL.so\n");
         mEGLLibrary = PR_LoadLibrary("libEGL.so");
     }
 #if defined(XP_UNIX)
     if (!mEGLLibrary) {
         mEGLLibrary = PR_LoadLibrary("libEGL.so.1");
     }
 #endif
     if (!mEGLLibrary) {
         NS_WARNING("Couldn't load EGL LIB.");
         return false;
     }
 #endif // !Windows
 #define SYMBOL(name) \
 { (PRFuncPtr*) &mSymbols.f##name, { "egl" #name, nullptr } }
     GLLibraryLoader::SymLoadStruct earlySymbols[] = {
         SYMBOL(GetDisplay),
         SYMBOL(GetCurrentSurface),
         SYMBOL(GetCurrentContext),
         SYMBOL(MakeCurrent),
         SYMBOL(DestroyContext),
         SYMBOL(CreateContext),
         SYMBOL(DestroySurface),
         SYMBOL(CreateWindowSurface),
         SYMBOL(CreatePbufferSurface),
         SYMBOL(CreatePixmapSurface),
         SYMBOL(BindAPI),
         SYMBOL(Initialize),
         SYMBOL(ChooseConfig),
         SYMBOL(GetError),
         SYMBOL(GetConfigs),
         SYMBOL(GetConfigAttrib),
         SYMBOL(WaitNative),
         SYMBOL(GetProcAddress),
         SYMBOL(SwapBuffers),
         SYMBOL(CopyBuffers),
         SYMBOL(QueryString),
         SYMBOL(QueryContext),
         SYMBOL(BindTexImage),
         SYMBOL(ReleaseTexImage),
         SYMBOL(QuerySurface),
         { nullptr, { nullptr } }
     };
     if (!GLLibraryLoader::LoadSymbols(mEGLLibrary, &earlySymbols[0])) {
         NS_WARNING("Couldn't find required entry points in EGL library (early init)");
         return false;
     }
     mEGLDisplay = fGetDisplay(EGL_DEFAULT_DISPLAY);
     if (!fInitialize(mEGLDisplay, nullptr, nullptr))
         return false;
     const char *vendor = (const char*) fQueryString(mEGLDisplay, LOCAL_EGL_VENDOR);
     if (vendor && (strstr(vendor, "TransGaming") != 0 || strstr(vendor, "Google Inc.") != 0)) {
         mIsANGLE = true;
     }
     InitExtensions();
     GLLibraryLoader::PlatformLookupFunction lookupFunction =
             (GLLibraryLoader::PlatformLookupFunction)mSymbols.fGetProcAddress;
     if (IsExtensionSupported(KHR_lock_surface)) {
         GLLibraryLoader::SymLoadStruct lockSymbols[] = {
             { (PRFuncPtr*) &mSymbols.fLockSurface,   { "eglLockSurfaceKHR",   nullptr } },
             { (PRFuncPtr*) &mSymbols.fUnlockSurface, { "eglUnlockSurfaceKHR", nullptr } },
             { nullptr, { nullptr } }
         };
         bool success = GLLibraryLoader::LoadSymbols(mEGLLibrary,
                                                     &lockSymbols[0],
                                                     lookupFunction);
         if (!success) {
             NS_ERROR("EGL supports KHR_lock_surface without exposing its functions!");
             MarkExtensionUnsupported(KHR_lock_surface);
             mSymbols.fLockSurface = nullptr;
             mSymbols.fUnlockSurface = nullptr;
         }
     }
     if (IsExtensionSupported(ANGLE_surface_d3d_texture_2d_share_handle)) {
         GLLibraryLoader::SymLoadStruct d3dSymbols[] = {
             { (PRFuncPtr*) &mSymbols.fQuerySurfacePointerANGLE, { "eglQuerySurfacePointerANGLE", nullptr } },
             { nullptr, { nullptr } }
         };
         bool success = GLLibraryLoader::LoadSymbols(mEGLLibrary,
                                                     &d3dSymbols[0],
                                                     lookupFunction);
         if (!success) {
             NS_ERROR("EGL supports ANGLE_surface_d3d_texture_2d_share_handle without exposing its functions!");
             MarkExtensionUnsupported(ANGLE_surface_d3d_texture_2d_share_handle);
             mSymbols.fQuerySurfacePointerANGLE = nullptr;
         }
     }
     if (IsExtensionSupported(KHR_fence_sync)) {
         GLLibraryLoader::SymLoadStruct syncSymbols[] = {
             { (PRFuncPtr*) &mSymbols.fCreateSync,     { "eglCreateSyncKHR",     nullptr } },
             { (PRFuncPtr*) &mSymbols.fDestroySync,    { "eglDestroySyncKHR",    nullptr } },
             { (PRFuncPtr*) &mSymbols.fClientWaitSync, { "eglClientWaitSyncKHR", nullptr } },
             { (PRFuncPtr*) &mSymbols.fGetSyncAttrib,  { "eglGetSyncAttribKHR",  nullptr } },
             { nullptr, { nullptr } }
         };
         bool success = GLLibraryLoader::LoadSymbols(mEGLLibrary,
                                                     &syncSymbols[0],
                                                     lookupFunction);
         if (!success) {
             NS_ERROR("EGL supports KHR_fence_sync without exposing its functions!");
             MarkExtensionUnsupported(KHR_fence_sync);
             mSymbols.fCreateSync = nullptr;
             mSymbols.fDestroySync = nullptr;
             mSymbols.fClientWaitSync = nullptr;
             mSymbols.fGetSyncAttrib = nullptr;
         }
     }
     if (IsExtensionSupported(KHR_image) || IsExtensionSupported(KHR_image_base)) {
         GLLibraryLoader::SymLoadStruct imageSymbols[] = {
             { (PRFuncPtr*) &mSymbols.fCreateImage,  { "eglCreateImageKHR",  nullptr } },
             { (PRFuncPtr*) &mSymbols.fDestroyImage, { "eglDestroyImageKHR", nullptr } },
             { nullptr, { nullptr } }
         };
         bool success = GLLibraryLoader::LoadSymbols(mEGLLibrary,
                                                     &imageSymbols[0],
                                                     lookupFunction);
         if (!success) {
             NS_ERROR("EGL supports KHR_image(_base) without exposing its functions!");
             MarkExtensionUnsupported(KHR_image);
             MarkExtensionUnsupported(KHR_image_base);
             MarkExtensionUnsupported(KHR_image_pixmap);
             mSymbols.fCreateImage = nullptr;
             mSymbols.fDestroyImage = nullptr;
         }
     } else {
         MarkExtensionUnsupported(KHR_image_pixmap);
     }
     mInitialized = true;
     reporter.SetSuccessful();
     return true;
 }
 void
 GLLibraryEGL::InitExtensions()
 {
     const char *extensions = (const char*)fQueryString(mEGLDisplay, LOCAL_EGL_EXTENSIONS);
     if (!extensions) {
         NS_WARNING("Failed to load EGL extension list!");
         return;
     }
     bool debugMode = false;
 #ifdef DEBUG
     if (PR_GetEnv("MOZ_GL_DEBUG"))
         debugMode = true;
     static bool firstRun = true;
 #else
     // Non-DEBUG, so never spew.
     const bool firstRun = false;
 #endif
     GLContext::InitializeExtensionsBitSet(mAvailableExtensions, extensions, sEGLExtensionNames, firstRun && debugMode);
 #ifdef DEBUG
     firstRun = false;
 #endif
 }
 void
 GLLibraryEGL::DumpEGLConfig(EGLConfig cfg)
 {
     int attrval;
     int err;
 #define ATTR(_x) do {                                                   \
         fGetConfigAttrib(mEGLDisplay, cfg, LOCAL_EGL_##_x, &attrval);  \
         if ((err = fGetError()) != 0x3000) {                        \
             printf_stderr("  %s: ERROR (0x%04x)\n", #_x, err);        \
         } else {                                                    \
             printf_stderr("  %s: %d (0x%04x)\n", #_x, attrval, attrval); \
         }                                                           \
     } while(0)
     printf_stderr("EGL Config: %d [%p]\n", (int)(intptr_t)cfg, cfg);
     ATTR(BUFFER_SIZE);
     ATTR(ALPHA_SIZE);
     ATTR(BLUE_SIZE);
     ATTR(GREEN_SIZE);
     ATTR(RED_SIZE);
     ATTR(DEPTH_SIZE);
     ATTR(STENCIL_SIZE);
     ATTR(CONFIG_CAVEAT);
     ATTR(CONFIG_ID);
     ATTR(LEVEL);
     ATTR(MAX_PBUFFER_HEIGHT);
     ATTR(MAX_PBUFFER_PIXELS);
     ATTR(MAX_PBUFFER_WIDTH);
     ATTR(NATIVE_RENDERABLE);
     ATTR(NATIVE_VISUAL_ID);
     ATTR(NATIVE_VISUAL_TYPE);
     ATTR(PRESERVED_RESOURCES);
     ATTR(SAMPLES);
     ATTR(SAMPLE_BUFFERS);
     ATTR(SURFACE_TYPE);
     ATTR(TRANSPARENT_TYPE);
     ATTR(TRANSPARENT_RED_VALUE);
     ATTR(TRANSPARENT_GREEN_VALUE);
     ATTR(TRANSPARENT_BLUE_VALUE);
     ATTR(BIND_TO_TEXTURE_RGB);
     ATTR(BIND_TO_TEXTURE_RGBA);
     ATTR(MIN_SWAP_INTERVAL);
     ATTR(MAX_SWAP_INTERVAL);
     ATTR(LUMINANCE_SIZE);
     ATTR(ALPHA_MASK_SIZE);
     ATTR(COLOR_BUFFER_TYPE);
     ATTR(RENDERABLE_TYPE);
     ATTR(CONFORMANT);
 #undef ATTR
 }
 void
 GLLibraryEGL::DumpEGLConfigs()
 {
     int nc = 0;
     fGetConfigs(mEGLDisplay, nullptr, 0, &nc);
     EGLConfig *ec = new EGLConfig[nc];
     fGetConfigs(mEGLDisplay, ec, nc, &nc);
     for (int i = 0; i < nc; ++i) {
         printf_stderr ("========= EGL Config %d ========\n", i);
         DumpEGLConfig(ec[i]);
     }
     delete [] ec;
 }
 #ifdef DEBUG
 /*static*/ void
 GLLibraryEGL::BeforeGLCall(const char* glFunction)
 {
     if (GLContext::DebugMode()) {
         if (GLContext::DebugMode() & GLContext::DebugTrace)
             printf_stderr("[egl] > %s\n", glFunction);
     }
 }
 /*static*/ void
 GLLibraryEGL::AfterGLCall(const char* glFunction)
 {
     if (GLContext::DebugMode() & GLContext::DebugTrace) {
         printf_stderr("[egl] < %s\n", glFunction);
     }
 }
 #endif
 } /* namespace gl */
 } /* namespace mozilla */

The Tor Browser / annotate

gfx/gl/GLLibraryEGL.cpp@b8a032363ba2 (annotated)

gfx/gl/GLLibraryEGL.cpp