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gecko-dev/gfx/gl/GLContextProviderEGL.cpp

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
#if defined(MOZ_WIDGET_GTK)
# define GET_NATIVE_WINDOW_FROM_REAL_WIDGET(aWidget) \
((EGLNativeWindowType)aWidget->GetNativeData(NS_NATIVE_EGL_WINDOW))
# define GET_NATIVE_WINDOW_FROM_COMPOSITOR_WIDGET(aWidget) \
(aWidget->AsX11()->GetEGLNativeWindow())
#elif defined(MOZ_WIDGET_ANDROID)
# define GET_NATIVE_WINDOW_FROM_REAL_WIDGET(aWidget) \
((EGLNativeWindowType)aWidget->GetNativeData(NS_JAVA_SURFACE))
# define GET_NATIVE_WINDOW_FROM_COMPOSITOR_WIDGET(aWidget) \
(aWidget->AsAndroid()->GetEGLNativeWindow())
#elif defined(XP_WIN)
# define GET_NATIVE_WINDOW_FROM_REAL_WIDGET(aWidget) \
((EGLNativeWindowType)aWidget->GetNativeData(NS_NATIVE_WINDOW))
# define GET_NATIVE_WINDOW_FROM_COMPOSITOR_WIDGET(aWidget) \
((EGLNativeWindowType)aWidget->AsWindows()->GetHwnd())
#else
# define GET_NATIVE_WINDOW_FROM_REAL_WIDGET(aWidget) \
((EGLNativeWindowType)aWidget->GetNativeData(NS_NATIVE_WINDOW))
# define GET_NATIVE_WINDOW_FROM_COMPOSITOR_WIDGET(aWidget) \
((EGLNativeWindowType)aWidget->RealWidget()->GetNativeData( \
NS_NATIVE_WINDOW))
#endif
#if defined(XP_UNIX)
# ifdef MOZ_WIDGET_ANDROID
# include <android/native_window.h>
# include <android/native_window_jni.h>
# include "mozilla/widget/AndroidCompositorWidget.h"
# endif
# define GLES2_LIB "libGLESv2.so"
# define GLES2_LIB2 "libGLESv2.so.2"
#elif defined(XP_WIN)
# include "mozilla/widget/WinCompositorWidget.h"
# include "nsIFile.h"
# define GLES2_LIB "libGLESv2.dll"
# ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN 1
# endif
# include <windows.h>
#else
# error "Platform not recognized"
#endif
#include "gfxASurface.h"
#include "gfxCrashReporterUtils.h"
#include "gfxFailure.h"
#include "gfxPlatform.h"
#include "gfxUtils.h"
#include "GLBlitHelper.h"
#include "GLContextEGL.h"
#include "GLContextProvider.h"
#include "GLLibraryEGL.h"
#include "LayersLogging.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/Preferences.h"
#include "mozilla/Services.h"
#include "mozilla/gfx/gfxVars.h"
#include "mozilla/layers/CompositorOptions.h"
#include "mozilla/widget/CompositorWidget.h"
#include "nsDebug.h"
#include "nsIWidget.h"
#include "nsThreadUtils.h"
#include "ScopedGLHelpers.h"
#include "TextureImageEGL.h"
#if defined(MOZ_WIDGET_GTK)
# include "mozilla/widget/GtkCompositorWidget.h"
#endif
#if defined(MOZ_WAYLAND)
# include "nsDataHashtable.h"
# include <gtk/gtk.h>
# include <gdk/gdkx.h>
# include <gdk/gdkwayland.h>
# include <wayland-egl.h>
# include <dlfcn.h>
# define IS_WAYLAND_DISPLAY() \
(gdk_display_get_default() && \
!GDK_IS_X11_DISPLAY(gdk_display_get_default()))
#endif
using namespace mozilla::gfx;
namespace mozilla {
namespace gl {
using namespace mozilla::widget;
#if defined(MOZ_WAYLAND)
class WaylandGLSurface {
public:
WaylandGLSurface(struct wl_surface* aWaylandSurface,
struct wl_egl_window* aEGLWindow);
~WaylandGLSurface();
private:
struct wl_surface* mWaylandSurface;
struct wl_egl_window* mEGLWindow;
};
static nsDataHashtable<nsPtrHashKey<void>, WaylandGLSurface*> sWaylandGLSurface;
void DeleteWaylandGLSurface(EGLSurface surface) {
// We're running on Wayland which means our EGLSurface may
// have attached Wayland backend data which must be released.
if (IS_WAYLAND_DISPLAY()) {
auto entry = sWaylandGLSurface.Lookup(surface);
if (entry) {
delete entry.Data();
entry.Remove();
}
}
}
#endif
#define ADD_ATTR_2(_array, _k, _v) \
do { \
(_array).AppendElement(_k); \
(_array).AppendElement(_v); \
} while (0)
#define ADD_ATTR_1(_array, _k) \
do { \
(_array).AppendElement(_k); \
} while (0)
static bool CreateConfigScreen(GLLibraryEGL* const egl,
EGLConfig* const aConfig,
const bool aEnableDepthBuffer,
const bool aUseGles);
// append three zeros at the end of attribs list to work around
// EGL implementation bugs that iterate until they find 0, instead of
// EGL_NONE. See bug 948406.
#define EGL_ATTRIBS_LIST_SAFE_TERMINATION_WORKING_AROUND_BUGS \
LOCAL_EGL_NONE, 0, 0, 0
static EGLint kTerminationAttribs[] = {
EGL_ATTRIBS_LIST_SAFE_TERMINATION_WORKING_AROUND_BUGS};
static int next_power_of_two(int v) {
v--;
v |= v >> 1;
v |= v >> 2;
v |= v >> 4;
v |= v >> 8;
v |= v >> 16;
v++;
return v;
}
static bool is_power_of_two(int v) {
NS_ASSERTION(v >= 0, "bad value");
if (v == 0) return true;
return (v & (v - 1)) == 0;
}
static void DestroySurface(GLLibraryEGL* const egl,
const EGLSurface oldSurface) {
if (oldSurface != EGL_NO_SURFACE) {
// TODO: This breaks TLS MakeCurrent caching.
egl->fMakeCurrent(egl->Display(), EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT);
egl->fDestroySurface(egl->Display(), oldSurface);
#if defined(MOZ_WAYLAND)
DeleteWaylandGLSurface(oldSurface);
#endif
}
}
static EGLSurface CreateFallbackSurface(GLLibraryEGL* const egl,
const EGLConfig& config) {
nsCString discardFailureId;
if (!GLLibraryEGL::EnsureInitialized(false, &discardFailureId)) {
gfxCriticalNote << "Failed to load EGL library 3!";
return EGL_NO_SURFACE;
}
if (egl->IsExtensionSupported(GLLibraryEGL::KHR_surfaceless_context)) {
// We don't need a PBuffer surface in this case
return EGL_NO_SURFACE;
}
std::vector<EGLint> pbattrs;
pbattrs.push_back(LOCAL_EGL_WIDTH);
pbattrs.push_back(1);
pbattrs.push_back(LOCAL_EGL_HEIGHT);
pbattrs.push_back(1);
for (const auto& cur : kTerminationAttribs) {
pbattrs.push_back(cur);
}
EGLSurface surface =
egl->fCreatePbufferSurface(egl->Display(), config, pbattrs.data());
if (!surface) {
MOZ_CRASH("Failed to create fallback EGLSurface");
}
return surface;
}
static EGLSurface CreateSurfaceFromNativeWindow(
GLLibraryEGL* const egl, const EGLNativeWindowType window,
const EGLConfig config) {
MOZ_ASSERT(window);
EGLSurface newSurface = EGL_NO_SURFACE;
#ifdef MOZ_WIDGET_ANDROID
JNIEnv* const env = jni::GetEnvForThread();
ANativeWindow* const nativeWindow =
ANativeWindow_fromSurface(env, reinterpret_cast<jobject>(window));
newSurface = egl->fCreateWindowSurface(egl->fGetDisplay(EGL_DEFAULT_DISPLAY),
config, nativeWindow, 0);
ANativeWindow_release(nativeWindow);
#else
newSurface = egl->fCreateWindowSurface(egl->Display(), config, window, 0);
#endif
return newSurface;
}
/* GLContextEGLFactory class was added as a friend of GLContextEGL
* so that it could access GLContextEGL::CreateGLContext. This was
* done so that a new function would not need to be added to the shared
* GLContextProvider interface.
*/
class GLContextEGLFactory {
public:
static already_AddRefed<GLContext> Create(EGLNativeWindowType aWindow,
bool aWebRender);
static already_AddRefed<GLContext> CreateImpl(EGLNativeWindowType aWindow,
bool aWebRender, bool aUseGles);
private:
GLContextEGLFactory() = default;
~GLContextEGLFactory() = default;
};
already_AddRefed<GLContext> GLContextEGLFactory::CreateImpl(
EGLNativeWindowType aWindow, bool aWebRender, bool aUseGles) {
nsCString discardFailureId;
if (!GLLibraryEGL::EnsureInitialized(false, &discardFailureId)) {
gfxCriticalNote << "Failed to load EGL library 3!";
return nullptr;
}
auto* egl = gl::GLLibraryEGL::Get();
bool doubleBuffered = true;
EGLConfig config;
if (aWebRender && egl->IsANGLE()) {
// Force enable alpha channel to make sure ANGLE use correct framebuffer
// formart
const int bpp = 32;
const bool withDepth = true;
if (!CreateConfig(egl, &config, bpp, withDepth, aUseGles)) {
gfxCriticalNote << "Failed to create EGLConfig for WebRender ANGLE!";
return nullptr;
}
} else {
if (!CreateConfigScreen(egl, &config, /* aEnableDepthBuffer */ aWebRender,
aUseGles)) {
gfxCriticalNote << "Failed to create EGLConfig!";
return nullptr;
}
}
EGLSurface surface = EGL_NO_SURFACE;
if (aWindow) {
surface = mozilla::gl::CreateSurfaceFromNativeWindow(egl, aWindow, config);
}
CreateContextFlags flags = CreateContextFlags::NONE;
if (aWebRender && aUseGles) {
flags |= CreateContextFlags::PREFER_ES3;
}
if (!aWebRender) {
flags |= CreateContextFlags::REQUIRE_COMPAT_PROFILE;
}
SurfaceCaps caps = SurfaceCaps::Any();
RefPtr<GLContextEGL> gl = GLContextEGL::CreateGLContext(
egl, flags, caps, false, config, surface, aUseGles, &discardFailureId);
if (!gl) {
const auto err = egl->fGetError();
gfxCriticalNote << "Failed to create EGLContext!: " << gfx::hexa(err);
mozilla::gl::DestroySurface(egl, surface);
return nullptr;
}
gl->MakeCurrent();
gl->SetIsDoubleBuffered(doubleBuffered);
#if defined(MOZ_WAYLAND)
if (surface != EGL_NO_SURFACE && IS_WAYLAND_DISPLAY()) {
// Make eglSwapBuffers() non-blocking on wayland
egl->fSwapInterval(egl->Display(), 0);
}
#endif
if (aWebRender && egl->IsANGLE()) {
MOZ_ASSERT(doubleBuffered);
egl->fSwapInterval(egl->Display(), 0);
}
return gl.forget();
}
already_AddRefed<GLContext> GLContextEGLFactory::Create(
EGLNativeWindowType aWindow, bool aWebRender) {
RefPtr<GLContext> glContext = CreateImpl(aWindow, aWebRender,
/* aUseGles */ false);
if (!glContext) {
glContext = CreateImpl(aWindow, aWebRender, /* aUseGles */ true);
}
return glContext.forget();
}
#if defined(MOZ_WAYLAND) || defined(MOZ_WIDGET_ANDROID)
/* static */
EGLSurface GLContextEGL::CreateEGLSurfaceForCompositorWidget(
widget::CompositorWidget* aCompositorWidget, const EGLConfig aConfig) {
nsCString discardFailureId;
if (!GLLibraryEGL::EnsureInitialized(false, &discardFailureId)) {
gfxCriticalNote << "Failed to load EGL library 6!";
return EGL_NO_SURFACE;
}
MOZ_ASSERT(aCompositorWidget);
EGLNativeWindowType window =
GET_NATIVE_WINDOW_FROM_COMPOSITOR_WIDGET(aCompositorWidget);
if (!window) {
gfxCriticalNote << "window is null";
return EGL_NO_SURFACE;
}
const auto& egl = GLLibraryEGL::Get();
return mozilla::gl::CreateSurfaceFromNativeWindow(egl, window, aConfig);
}
#endif
GLContextEGL::GLContextEGL(GLLibraryEGL* const egl, CreateContextFlags flags,
const SurfaceCaps& caps, bool isOffscreen,
EGLConfig config, EGLSurface surface,
EGLContext context)
: GLContext(flags, caps, nullptr, isOffscreen, false),
mEgl(egl),
mConfig(config),
mContext(context),
mSurface(surface),
mFallbackSurface(CreateFallbackSurface(mEgl, mConfig)) {
#ifdef DEBUG
printf_stderr("Initializing context %p surface %p on display %p\n", mContext,
mSurface, mEgl->Display());
#endif
}
void GLContextEGL::OnMarkDestroyed() {
if (mSurfaceOverride != EGL_NO_SURFACE) {
SetEGLSurfaceOverride(EGL_NO_SURFACE);
}
}
GLContextEGL::~GLContextEGL() {
MarkDestroyed();
// Wrapped context should not destroy eglContext/Surface
if (!mOwnsContext) {
return;
}
#ifdef DEBUG
printf_stderr("Destroying context %p surface %p on display %p\n", mContext,
mSurface, mEgl->Display());
#endif
mEgl->fDestroyContext(mEgl->Display(), mContext);
mozilla::gl::DestroySurface(mEgl, mSurface);
mozilla::gl::DestroySurface(mEgl, mFallbackSurface);
}
bool GLContextEGL::Init() {
if (!GLContext::Init()) return false;
bool current = MakeCurrent();
if (!current) {
gfx::LogFailure(
NS_LITERAL_CSTRING("Couldn't get device attachments for device."));
return false;
}
mShareWithEGLImage = mEgl->HasKHRImageBase() &&
mEgl->HasKHRImageTexture2D() &&
IsExtensionSupported(OES_EGL_image);
return true;
}
bool GLContextEGL::BindTexImage() {
if (!mSurface) return false;
if (mBound && !ReleaseTexImage()) return false;
EGLBoolean success = mEgl->fBindTexImage(
mEgl->Display(), (EGLSurface)mSurface, LOCAL_EGL_BACK_BUFFER);
if (success == LOCAL_EGL_FALSE) return false;
mBound = true;
return true;
}
bool GLContextEGL::ReleaseTexImage() {
if (!mBound) return true;
if (!mSurface) return false;
EGLBoolean success;
success = mEgl->fReleaseTexImage(mEgl->Display(), (EGLSurface)mSurface,
LOCAL_EGL_BACK_BUFFER);
if (success == LOCAL_EGL_FALSE) return false;
mBound = false;
return true;
}
void GLContextEGL::SetEGLSurfaceOverride(EGLSurface surf) {
mSurfaceOverride = surf;
DebugOnly<bool> ok = MakeCurrent(true);
MOZ_ASSERT(ok);
}
bool GLContextEGL::MakeCurrentImpl() const {
EGLSurface surface =
(mSurfaceOverride != EGL_NO_SURFACE) ? mSurfaceOverride : mSurface;
if (!surface) {
surface = mFallbackSurface;
}
const bool succeeded =
mEgl->fMakeCurrent(mEgl->Display(), surface, surface, mContext);
if (!succeeded) {
const auto eglError = mEgl->fGetError();
if (eglError == LOCAL_EGL_CONTEXT_LOST) {
OnContextLostError();
} else {
NS_WARNING("Failed to make GL context current!");
#ifdef DEBUG
printf_stderr("EGL Error: 0x%04x\n", eglError);
#endif
}
}
return succeeded;
}
bool GLContextEGL::IsCurrentImpl() const {
return mEgl->fGetCurrentContext() == mContext;
}
bool GLContextEGL::RenewSurface(CompositorWidget* aWidget) {
if (!mOwnsContext) {
return false;
}
// unconditionally release the surface and create a new one. Don't try to
// optimize this away. If we get here, then by definition we know that we want
// to get a new surface.
ReleaseSurface();
MOZ_ASSERT(aWidget);
EGLNativeWindowType nativeWindow =
GET_NATIVE_WINDOW_FROM_COMPOSITOR_WIDGET(aWidget);
if (nativeWindow) {
mSurface =
mozilla::gl::CreateSurfaceFromNativeWindow(mEgl, nativeWindow, mConfig);
if (!mSurface) {
NS_WARNING("Failed to create EGLSurface from native window");
return false;
}
}
const bool ok = MakeCurrent(true);
MOZ_ASSERT(ok);
#if defined(MOZ_WAYLAND)
if (mSurface && IS_WAYLAND_DISPLAY()) {
// Make eglSwapBuffers() non-blocking on wayland
mEgl->fSwapInterval(mEgl->Display(), 0);
}
#endif
return ok;
}
void GLContextEGL::ReleaseSurface() {
if (mOwnsContext) {
mozilla::gl::DestroySurface(mEgl, mSurface);
}
if (mSurface == mSurfaceOverride) {
mSurfaceOverride = EGL_NO_SURFACE;
}
mSurface = EGL_NO_SURFACE;
}
Maybe<SymbolLoader> GLContextEGL::GetSymbolLoader() const {
return mEgl->GetSymbolLoader();
}
bool GLContextEGL::SwapBuffers() {
EGLSurface surface =
mSurfaceOverride != EGL_NO_SURFACE ? mSurfaceOverride : mSurface;
if (surface) {
if ((mEgl->IsExtensionSupported(
GLLibraryEGL::EXT_swap_buffers_with_damage) ||
mEgl->IsExtensionSupported(
GLLibraryEGL::KHR_swap_buffers_with_damage))) {
std::vector<EGLint> rects;
for (auto iter = mDamageRegion.RectIter(); !iter.Done(); iter.Next()) {
const IntRect& r = iter.Get();
rects.push_back(r.X());
rects.push_back(r.Y());
rects.push_back(r.Width());
rects.push_back(r.Height());
}
mDamageRegion.SetEmpty();
return mEgl->fSwapBuffersWithDamage(mEgl->Display(), surface,
rects.data(), rects.size() / 4);
}
return mEgl->fSwapBuffers(mEgl->Display(), surface);
} else {
return false;
}
}
void GLContextEGL::SetDamage(const nsIntRegion& aDamageRegion) {
mDamageRegion = aDamageRegion;
}
void GLContextEGL::GetWSIInfo(nsCString* const out) const {
out->AppendLiteral("EGL_VENDOR: ");
out->Append(
(const char*)mEgl->fQueryString(mEgl->Display(), LOCAL_EGL_VENDOR));
out->AppendLiteral("\nEGL_VERSION: ");
out->Append(
(const char*)mEgl->fQueryString(mEgl->Display(), LOCAL_EGL_VERSION));
out->AppendLiteral("\nEGL_EXTENSIONS: ");
out->Append(
(const char*)mEgl->fQueryString(mEgl->Display(), LOCAL_EGL_EXTENSIONS));
#ifndef ANDROID // This query will crash some old android.
out->AppendLiteral("\nEGL_EXTENSIONS(nullptr): ");
out->Append((const char*)mEgl->fQueryString(nullptr, LOCAL_EGL_EXTENSIONS));
#endif
}
// hold a reference to the given surface
// for the lifetime of this context.
void GLContextEGL::HoldSurface(gfxASurface* aSurf) { mThebesSurface = aSurf; }
#define LOCAL_EGL_CONTEXT_PROVOKING_VERTEX_DONT_CARE_MOZ 0x6000
already_AddRefed<GLContextEGL> GLContextEGL::CreateGLContext(
GLLibraryEGL* const egl, CreateContextFlags flags, const SurfaceCaps& caps,
bool isOffscreen, EGLConfig config, EGLSurface surface, const bool useGles,
nsACString* const out_failureId) {
std::vector<EGLint> required_attribs;
if (useGles) {
if (egl->fBindAPI(LOCAL_EGL_OPENGL_ES_API) == LOCAL_EGL_FALSE) {
*out_failureId = NS_LITERAL_CSTRING("FEATURE_FAILURE_EGL_ES");
NS_WARNING("Failed to bind API to GLES!");
return nullptr;
}
required_attribs.push_back(LOCAL_EGL_CONTEXT_MAJOR_VERSION);
if (flags & CreateContextFlags::PREFER_ES3) {
required_attribs.push_back(3);
} else {
required_attribs.push_back(2);
}
} else {
if (egl->fBindAPI(LOCAL_EGL_OPENGL_API) == LOCAL_EGL_FALSE) {
*out_failureId = NS_LITERAL_CSTRING("FEATURE_FAILURE_EGL");
NS_WARNING("Failed to bind API to GL!");
return nullptr;
}
if (flags & CreateContextFlags::REQUIRE_COMPAT_PROFILE) {
required_attribs.push_back(LOCAL_EGL_CONTEXT_OPENGL_PROFILE_MASK);
required_attribs.push_back(
LOCAL_EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT);
required_attribs.push_back(LOCAL_EGL_CONTEXT_MAJOR_VERSION);
required_attribs.push_back(2);
} else {
required_attribs.push_back(LOCAL_EGL_CONTEXT_MAJOR_VERSION);
required_attribs.push_back(3);
required_attribs.push_back(LOCAL_EGL_CONTEXT_MINOR_VERSION);
required_attribs.push_back(1);
}
}
if ((flags & CreateContextFlags::PREFER_EXACT_VERSION) && egl->IsANGLE()) {
required_attribs.push_back(
LOCAL_EGL_CONTEXT_OPENGL_BACKWARDS_COMPATIBLE_ANGLE);
required_attribs.push_back(LOCAL_EGL_FALSE);
}
const auto debugFlags = GLContext::ChooseDebugFlags(flags);
if (!debugFlags && flags & CreateContextFlags::NO_VALIDATION &&
egl->IsExtensionSupported(GLLibraryEGL::KHR_create_context_no_error)) {
required_attribs.push_back(LOCAL_EGL_CONTEXT_OPENGL_NO_ERROR_KHR);
required_attribs.push_back(LOCAL_EGL_TRUE);
}
if (flags & CreateContextFlags::PROVOKING_VERTEX_DONT_CARE &&
egl->IsExtensionSupported(
GLLibraryEGL::MOZ_create_context_provoking_vertex_dont_care)) {
required_attribs.push_back(
LOCAL_EGL_CONTEXT_PROVOKING_VERTEX_DONT_CARE_MOZ);
required_attribs.push_back(LOCAL_EGL_TRUE);
}
std::vector<EGLint> robustness_attribs;
std::vector<EGLint> rbab_attribs; // RBAB: Robust Buffer Access Behavior
if (flags & CreateContextFlags::PREFER_ROBUSTNESS) {
if (egl->IsExtensionSupported(
GLLibraryEGL::EXT_create_context_robustness)) {
robustness_attribs = required_attribs;
robustness_attribs.push_back(
LOCAL_EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_EXT);
robustness_attribs.push_back(LOCAL_EGL_LOSE_CONTEXT_ON_RESET_EXT);
// Don't enable robust buffer access on Adreno 630 devices.
// It causes the linking of some shaders to fail. See bug 1485441.
nsCOMPtr<nsIGfxInfo> gfxInfo = services::GetGfxInfo();
nsAutoString renderer;
gfxInfo->GetAdapterDeviceID(renderer);
if (renderer.Find("Adreno (TM) 630") == -1) {
rbab_attribs = robustness_attribs;
rbab_attribs.push_back(LOCAL_EGL_CONTEXT_OPENGL_ROBUST_ACCESS_EXT);
rbab_attribs.push_back(LOCAL_EGL_TRUE);
}
} else if (egl->IsExtensionSupported(GLLibraryEGL::KHR_create_context)) {
robustness_attribs = required_attribs;
robustness_attribs.push_back(
LOCAL_EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_KHR);
robustness_attribs.push_back(LOCAL_EGL_LOSE_CONTEXT_ON_RESET_KHR);
rbab_attribs = robustness_attribs;
rbab_attribs.push_back(LOCAL_EGL_CONTEXT_FLAGS_KHR);
rbab_attribs.push_back(LOCAL_EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR);
}
}
const auto fnCreate = [&](const std::vector<EGLint>& attribs) {
auto terminated_attribs = attribs;
for (const auto& cur : kTerminationAttribs) {
terminated_attribs.push_back(cur);
}
return egl->fCreateContext(egl->Display(), config, EGL_NO_CONTEXT,
terminated_attribs.data());
};
EGLContext context;
do {
if (!rbab_attribs.empty()) {
context = fnCreate(rbab_attribs);
if (context) break;
NS_WARNING("Failed to create EGLContext with rbab_attribs");
}
if (!robustness_attribs.empty()) {
context = fnCreate(robustness_attribs);
if (context) break;
NS_WARNING("Failed to create EGLContext with robustness_attribs");
}
context = fnCreate(required_attribs);
if (context) break;
NS_WARNING("Failed to create EGLContext with required_attribs");
*out_failureId = NS_LITERAL_CSTRING("FEATURE_FAILURE_EGL_CREATE");
return nullptr;
} while (false);
MOZ_ASSERT(context);
RefPtr<GLContextEGL> glContext =
new GLContextEGL(egl, flags, caps, isOffscreen, config, surface, context);
if (!glContext->Init()) {
*out_failureId = NS_LITERAL_CSTRING("FEATURE_FAILURE_EGL_INIT");
return nullptr;
}
return glContext.forget();
}
// static
EGLSurface GLContextEGL::CreatePBufferSurfaceTryingPowerOfTwo(
GLLibraryEGL* const egl, EGLConfig config, EGLenum bindToTextureFormat,
mozilla::gfx::IntSize& pbsize) {
nsTArray<EGLint> pbattrs(16);
EGLSurface surface = nullptr;
TRY_AGAIN_POWER_OF_TWO:
pbattrs.Clear();
pbattrs.AppendElement(LOCAL_EGL_WIDTH);
pbattrs.AppendElement(pbsize.width);
pbattrs.AppendElement(LOCAL_EGL_HEIGHT);
pbattrs.AppendElement(pbsize.height);
if (bindToTextureFormat != LOCAL_EGL_NONE) {
pbattrs.AppendElement(LOCAL_EGL_TEXTURE_TARGET);
pbattrs.AppendElement(LOCAL_EGL_TEXTURE_2D);
pbattrs.AppendElement(LOCAL_EGL_TEXTURE_FORMAT);
pbattrs.AppendElement(bindToTextureFormat);
}
for (const auto& cur : kTerminationAttribs) {
pbattrs.AppendElement(cur);
}
surface = egl->fCreatePbufferSurface(egl->Display(), config, &pbattrs[0]);
if (!surface) {
if (!is_power_of_two(pbsize.width) || !is_power_of_two(pbsize.height)) {
if (!is_power_of_two(pbsize.width))
pbsize.width = next_power_of_two(pbsize.width);
if (!is_power_of_two(pbsize.height))
pbsize.height = next_power_of_two(pbsize.height);
NS_WARNING("Failed to create pbuffer, trying power of two dims");
goto TRY_AGAIN_POWER_OF_TWO;
}
NS_WARNING("Failed to create pbuffer surface");
return nullptr;
}
return surface;
}
#if defined(MOZ_WAYLAND)
WaylandGLSurface::WaylandGLSurface(struct wl_surface* aWaylandSurface,
struct wl_egl_window* aEGLWindow)
: mWaylandSurface(aWaylandSurface), mEGLWindow(aEGLWindow) {}
WaylandGLSurface::~WaylandGLSurface() {
wl_egl_window_destroy(mEGLWindow);
wl_surface_destroy(mWaylandSurface);
}
// static
EGLSurface GLContextEGL::CreateWaylandBufferSurface(
GLLibraryEGL* const egl, EGLConfig config, mozilla::gfx::IntSize& pbsize) {
// Available as of GTK 3.8+
static auto sGdkWaylandDisplayGetWlCompositor =
(wl_compositor * (*)(GdkDisplay*))
dlsym(RTLD_DEFAULT, "gdk_wayland_display_get_wl_compositor");
if (!sGdkWaylandDisplayGetWlCompositor) return nullptr;
struct wl_compositor* compositor =
sGdkWaylandDisplayGetWlCompositor(gdk_display_get_default());
struct wl_surface* wlsurface = wl_compositor_create_surface(compositor);
struct wl_egl_window* eglwindow =
wl_egl_window_create(wlsurface, pbsize.width, pbsize.height);
EGLSurface surface =
egl->fCreateWindowSurface(egl->Display(), config, eglwindow, 0);
if (surface) {
WaylandGLSurface* waylandData = new WaylandGLSurface(wlsurface, eglwindow);
auto entry = sWaylandGLSurface.LookupForAdd(surface);
entry.OrInsert([&waylandData]() { return waylandData; });
}
return surface;
}
#endif
static const EGLint kEGLConfigAttribsRGB16[] = {
LOCAL_EGL_SURFACE_TYPE, LOCAL_EGL_WINDOW_BIT,
LOCAL_EGL_RED_SIZE, 5,
LOCAL_EGL_GREEN_SIZE, 6,
LOCAL_EGL_BLUE_SIZE, 5,
LOCAL_EGL_ALPHA_SIZE, 0};
static const EGLint kEGLConfigAttribsRGB24[] = {
LOCAL_EGL_SURFACE_TYPE, LOCAL_EGL_WINDOW_BIT,
LOCAL_EGL_RED_SIZE, 8,
LOCAL_EGL_GREEN_SIZE, 8,
LOCAL_EGL_BLUE_SIZE, 8,
LOCAL_EGL_ALPHA_SIZE, 0};
static const EGLint kEGLConfigAttribsRGBA32[] = {
LOCAL_EGL_SURFACE_TYPE, LOCAL_EGL_WINDOW_BIT,
LOCAL_EGL_RED_SIZE, 8,
LOCAL_EGL_GREEN_SIZE, 8,
LOCAL_EGL_BLUE_SIZE, 8,
LOCAL_EGL_ALPHA_SIZE, 8};
bool CreateConfig(GLLibraryEGL* const egl, EGLConfig* aConfig, int32_t depth,
bool aEnableDepthBuffer, bool aUseGles) {
EGLConfig configs[64];
std::vector<EGLint> attribs;
EGLint ncfg = ArrayLength(configs);
switch (depth) {
case 16:
for (const auto& cur : kEGLConfigAttribsRGB16) {
attribs.push_back(cur);
}
break;
case 24:
for (const auto& cur : kEGLConfigAttribsRGB24) {
attribs.push_back(cur);
}
break;
case 32:
for (const auto& cur : kEGLConfigAttribsRGBA32) {
attribs.push_back(cur);
}
break;
default:
NS_ERROR("Unknown pixel depth");
return false;
}
if (aUseGles) {
attribs.push_back(LOCAL_EGL_RENDERABLE_TYPE);
attribs.push_back(LOCAL_EGL_OPENGL_ES2_BIT);
}
for (const auto& cur : kTerminationAttribs) {
attribs.push_back(cur);
}
if (!egl->fChooseConfig(egl->Display(), attribs.data(), configs, ncfg,
&ncfg) ||
ncfg < 1) {
return false;
}
for (int j = 0; j < ncfg; ++j) {
EGLConfig config = configs[j];
EGLint r, g, b, a;
if (egl->fGetConfigAttrib(egl->Display(), config, LOCAL_EGL_RED_SIZE, &r) &&
egl->fGetConfigAttrib(egl->Display(), config, LOCAL_EGL_GREEN_SIZE,
&g) &&
egl->fGetConfigAttrib(egl->Display(), config, LOCAL_EGL_BLUE_SIZE,
&b) &&
egl->fGetConfigAttrib(egl->Display(), config, LOCAL_EGL_ALPHA_SIZE,
&a) &&
((depth == 16 && r == 5 && g == 6 && b == 5) ||
(depth == 24 && r == 8 && g == 8 && b == 8) ||
(depth == 32 && r == 8 && g == 8 && b == 8 && a == 8))) {
EGLint z;
if (aEnableDepthBuffer) {
if (!egl->fGetConfigAttrib(egl->Display(), config, LOCAL_EGL_DEPTH_SIZE,
&z) ||
z != 24) {
continue;
}
}
*aConfig = config;
return true;
}
}
return false;
}
// Return true if a suitable EGLConfig was found and pass it out
// through aConfig. Return false otherwise.
//
// NB: It's entirely legal for the returned EGLConfig to be valid yet
// have the value null.
static bool CreateConfigScreen(GLLibraryEGL* const egl,
EGLConfig* const aConfig,
const bool aEnableDepthBuffer,
const bool aUseGles) {
int32_t depth = gfxVars::ScreenDepth();
if (!CreateConfig(egl, aConfig, depth, aEnableDepthBuffer, aUseGles)) {
#ifdef MOZ_WIDGET_ANDROID
// Bug 736005
// Android doesn't always support 16 bit so also try 24 bit
if (depth == 16) {
return CreateConfig(egl, aConfig, 24, aEnableDepthBuffer, aUseGles);
}
// Bug 970096
// Some devices that have 24 bit screens only support 16 bit OpenGL?
if (depth == 24) {
return CreateConfig(egl, aConfig, 16, aEnableDepthBuffer, aUseGles);
}
#endif
return false;
} else {
return true;
}
}
already_AddRefed<GLContext> GLContextProviderEGL::CreateWrappingExisting(
void* aContext, void* aSurface) {
nsCString discardFailureId;
if (!GLLibraryEGL::EnsureInitialized(false, &discardFailureId)) {
MOZ_CRASH("GFX: Failed to load EGL library 2!");
return nullptr;
}
if (!aContext || !aSurface) return nullptr;
const auto& egl = GLLibraryEGL::Get();
SurfaceCaps caps = SurfaceCaps::Any();
EGLConfig config = EGL_NO_CONFIG;
RefPtr<GLContextEGL> gl =
new GLContextEGL(egl, CreateContextFlags::NONE, caps, false, config,
(EGLSurface)aSurface, (EGLContext)aContext);
gl->SetIsDoubleBuffered(true);
gl->mOwnsContext = false;
return gl.forget();
}
already_AddRefed<GLContext> GLContextProviderEGL::CreateForCompositorWidget(
CompositorWidget* aCompositorWidget, bool aWebRender,
bool aForceAccelerated) {
EGLNativeWindowType window = nullptr;
if (aCompositorWidget) {
window = GET_NATIVE_WINDOW_FROM_COMPOSITOR_WIDGET(aCompositorWidget);
}
return GLContextEGLFactory::Create(window, aWebRender);
}
#if defined(MOZ_WIDGET_ANDROID)
EGLSurface GLContextEGL::CreateCompatibleSurface(void* aWindow) {
if (mConfig == EGL_NO_CONFIG) {
MOZ_CRASH("GFX: Failed with invalid EGLConfig 2!");
}
return GLContextProviderEGL::CreateEGLSurface(aWindow, mConfig);
}
/* static */
static EGLSurface CreateEGLSurfaceImpl(void* aWindow, EGLConfig aConfig,
bool aUseGles) {
// NOTE: aWindow is an ANativeWindow
nsCString discardFailureId;
if (!GLLibraryEGL::EnsureInitialized(false, &discardFailureId)) {
MOZ_CRASH("GFX: Failed to load EGL library 4!");
}
auto* egl = gl::GLLibraryEGL::Get();
EGLConfig config = aConfig;
if (!config && !CreateConfigScreen(egl, &config,
/* aEnableDepthBuffer */ false,
/* useGles */ aUseGles)) {
return EGL_NO_SURFACE;
}
MOZ_ASSERT(aWindow);
return egl->fCreateWindowSurface(egl->Display(), config, aWindow, 0);
}
/* static */
EGLSurface GLContextProviderEGL::CreateEGLSurface(void* aWindow,
EGLConfig aConfig) {
EGLSurface surface =
CreateEGLSurfaceImpl(aWindow, aConfig, /* aUseGles */ false);
if (surface == EGL_NO_SURFACE) {
surface = CreateEGLSurfaceImpl(aWindow, aConfig, /* aUseGles */ true);
if (surface == EGL_NO_SURFACE) {
MOZ_CRASH("GFX: Failed to create EGLSurface 2!");
}
}
return surface;
}
/* static */
void GLContextProviderEGL::DestroyEGLSurface(EGLSurface surface) {
nsCString discardFailureId;
if (!GLLibraryEGL::EnsureInitialized(false, &discardFailureId)) {
MOZ_CRASH("GFX: Failed to load EGL library 5!");
}
auto* egl = gl::GLLibraryEGL::Get();
egl->fDestroySurface(egl->Display(), surface);
}
#endif // defined(ANDROID)
static void FillOffscreenContextAttribs(bool alpha, bool depth, bool stencil,
bool bpp16, bool es3, bool useGles,
nsTArray<EGLint>* out) {
out->AppendElement(LOCAL_EGL_SURFACE_TYPE);
#if defined(MOZ_WAYLAND)
if (IS_WAYLAND_DISPLAY()) {
// Wayland on desktop does not support PBuffer or FBO.
// We create a dummy wl_egl_window instead.
out->AppendElement(LOCAL_EGL_WINDOW_BIT);
} else {
out->AppendElement(LOCAL_EGL_PBUFFER_BIT);
}
#else
out->AppendElement(LOCAL_EGL_PBUFFER_BIT);
#endif
if (useGles) {
out->AppendElement(LOCAL_EGL_RENDERABLE_TYPE);
if (es3) {
out->AppendElement(LOCAL_EGL_OPENGL_ES3_BIT_KHR);
} else {
out->AppendElement(LOCAL_EGL_OPENGL_ES2_BIT);
}
}
out->AppendElement(LOCAL_EGL_RED_SIZE);
if (bpp16) {
out->AppendElement(alpha ? 4 : 5);
} else {
out->AppendElement(8);
}
out->AppendElement(LOCAL_EGL_GREEN_SIZE);
if (bpp16) {
out->AppendElement(alpha ? 4 : 6);
} else {
out->AppendElement(8);
}
out->AppendElement(LOCAL_EGL_BLUE_SIZE);
if (bpp16) {
out->AppendElement(alpha ? 4 : 5);
} else {
out->AppendElement(8);
}
out->AppendElement(LOCAL_EGL_ALPHA_SIZE);
if (alpha) {
out->AppendElement(bpp16 ? 4 : 8);
} else {
out->AppendElement(0);
}
out->AppendElement(LOCAL_EGL_DEPTH_SIZE);
out->AppendElement(depth ? 16 : 0);
out->AppendElement(LOCAL_EGL_STENCIL_SIZE);
out->AppendElement(stencil ? 8 : 0);
// EGL_ATTRIBS_LIST_SAFE_TERMINATION_WORKING_AROUND_BUGS
out->AppendElement(LOCAL_EGL_NONE);
out->AppendElement(0);
out->AppendElement(0);
out->AppendElement(0);
}
static GLint GetAttrib(GLLibraryEGL* egl, EGLConfig config, EGLint attrib) {
EGLint bits = 0;
egl->fGetConfigAttrib(egl->Display(), config, attrib, &bits);
MOZ_ASSERT(egl->fGetError() == LOCAL_EGL_SUCCESS);
return bits;
}
static EGLConfig ChooseConfigOffscreen(GLLibraryEGL* egl,
CreateContextFlags flags,
const SurfaceCaps& minCaps,
bool aUseGles,
SurfaceCaps* const out_configCaps) {
nsTArray<EGLint> configAttribList;
FillOffscreenContextAttribs(minCaps.alpha, minCaps.depth, minCaps.stencil,
minCaps.bpp16,
bool(flags & CreateContextFlags::PREFER_ES3),
aUseGles, &configAttribList);
const EGLint* configAttribs = configAttribList.Elements();
// We're guaranteed to get at least minCaps, and the sorting dictated by the
// spec for eglChooseConfig reasonably assures that a reasonable 'best' config
// is on top.
const EGLint kMaxConfigs = 1;
EGLConfig configs[kMaxConfigs];
EGLint foundConfigs = 0;
if (!egl->fChooseConfig(egl->Display(), configAttribs, configs, kMaxConfigs,
&foundConfigs) ||
foundConfigs == 0) {
return EGL_NO_CONFIG;
}
EGLConfig config = configs[0];
*out_configCaps = minCaps; // Pick up any preserve, etc.
out_configCaps->color = true;
out_configCaps->alpha = bool(GetAttrib(egl, config, LOCAL_EGL_ALPHA_SIZE));
out_configCaps->depth = bool(GetAttrib(egl, config, LOCAL_EGL_DEPTH_SIZE));
out_configCaps->stencil =
bool(GetAttrib(egl, config, LOCAL_EGL_STENCIL_SIZE));
out_configCaps->bpp16 = (GetAttrib(egl, config, LOCAL_EGL_RED_SIZE) < 8);
return config;
}
/*static*/
already_AddRefed<GLContextEGL>
GLContextEGL::CreateEGLPBufferOffscreenContextImpl(
CreateContextFlags flags, const mozilla::gfx::IntSize& size,
const SurfaceCaps& minCaps, bool aUseGles,
nsACString* const out_failureId) {
bool forceEnableHardware =
bool(flags & CreateContextFlags::FORCE_ENABLE_HARDWARE);
if (!GLLibraryEGL::EnsureInitialized(forceEnableHardware, out_failureId)) {
return nullptr;
}
auto* egl = gl::GLLibraryEGL::Get();
SurfaceCaps configCaps;
EGLConfig config =
ChooseConfigOffscreen(egl, flags, minCaps, aUseGles, &configCaps);
if (config == EGL_NO_CONFIG) {
*out_failureId = NS_LITERAL_CSTRING("FEATURE_FAILURE_EGL_NO_CONFIG");
NS_WARNING("Failed to find a compatible config.");
return nullptr;
}
if (GLContext::ShouldSpew()) {
egl->DumpEGLConfig(config);
}
mozilla::gfx::IntSize pbSize(size);
EGLSurface surface = nullptr;
#if defined(MOZ_WAYLAND)
if (IS_WAYLAND_DISPLAY()) {
surface = GLContextEGL::CreateWaylandBufferSurface(egl, config, pbSize);
} else
#endif
{
surface = GLContextEGL::CreatePBufferSurfaceTryingPowerOfTwo(
egl, config, LOCAL_EGL_NONE, pbSize);
}
if (!surface) {
*out_failureId = NS_LITERAL_CSTRING("FEATURE_FAILURE_EGL_POT");
NS_WARNING("Failed to create PBuffer for context!");
return nullptr;
}
RefPtr<GLContextEGL> gl = GLContextEGL::CreateGLContext(
egl, flags, configCaps, true, config, surface, aUseGles, out_failureId);
if (!gl) {
NS_WARNING("Failed to create GLContext from PBuffer");
egl->fDestroySurface(egl->Display(), surface);
#if defined(MOZ_WAYLAND)
DeleteWaylandGLSurface(surface);
#endif
return nullptr;
}
return gl.forget();
}
already_AddRefed<GLContextEGL> GLContextEGL::CreateEGLPBufferOffscreenContext(
CreateContextFlags flags, const mozilla::gfx::IntSize& size,
const SurfaceCaps& minCaps, nsACString* const out_failureId) {
RefPtr<GLContextEGL> gl = CreateEGLPBufferOffscreenContextImpl(
flags, size, minCaps, /* aUseGles */ false, out_failureId);
if (!gl) {
gl = CreateEGLPBufferOffscreenContextImpl(
flags, size, minCaps, /* aUseGles */ true, out_failureId);
}
return gl.forget();
}
/*static*/
already_AddRefed<GLContext> GLContextProviderEGL::CreateHeadless(
CreateContextFlags flags, nsACString* const out_failureId) {
mozilla::gfx::IntSize dummySize = mozilla::gfx::IntSize(16, 16);
SurfaceCaps dummyCaps = SurfaceCaps::Any();
return GLContextEGL::CreateEGLPBufferOffscreenContext(
flags, dummySize, dummyCaps, out_failureId);
}
// Under EGL, on Android, pbuffers are supported fine, though
// often without the ability to texture from them directly.
/*static*/
already_AddRefed<GLContext> GLContextProviderEGL::CreateOffscreen(
const mozilla::gfx::IntSize& size, const SurfaceCaps& minCaps,
CreateContextFlags flags, nsACString* const out_failureId) {
bool forceEnableHardware =
bool(flags & CreateContextFlags::FORCE_ENABLE_HARDWARE);
if (!GLLibraryEGL::EnsureInitialized(
forceEnableHardware, out_failureId)) { // Needed for IsANGLE().
return nullptr;
}
auto* egl = gl::GLLibraryEGL::Get();
bool canOffscreenUseHeadless = true;
if (egl->IsANGLE()) {
// ANGLE needs to use PBuffers.
canOffscreenUseHeadless = false;
}
#if defined(MOZ_WIDGET_ANDROID)
// Using a headless context loses the SurfaceCaps
// which can cause a loss of depth and/or stencil
canOffscreenUseHeadless = false;
#endif // defined(MOZ_WIDGET_ANDROID)
RefPtr<GLContext> gl;
SurfaceCaps minOffscreenCaps = minCaps;
if (canOffscreenUseHeadless) {
gl = CreateHeadless(flags, out_failureId);
if (!gl) {
return nullptr;
}
} else {
gl = GLContextEGL::CreateEGLPBufferOffscreenContext(
flags, size, minOffscreenCaps, out_failureId);
if (!gl) return nullptr;
// Pull the actual resulting caps to ensure that our offscreen matches our
// backbuffer.
minOffscreenCaps.alpha = gl->Caps().alpha;
minOffscreenCaps.depth = gl->Caps().depth;
minOffscreenCaps.stencil = gl->Caps().stencil;
}
// Init the offscreen with the updated offscreen caps.
if (!gl->InitOffscreen(size, minOffscreenCaps)) {
*out_failureId = NS_LITERAL_CSTRING("FEATURE_FAILURE_EGL_OFFSCREEN");
return nullptr;
}
return gl.forget();
}
// Don't want a global context on Android as 1) share groups across 2 threads
// fail on many Tegra drivers (bug 759225) and 2) some mobile devices have a
// very strict limit on global number of GL contexts (bug 754257) and 3) each
// EGL context eats 750k on B2G (bug 813783)
/*static*/
GLContext* GLContextProviderEGL::GetGlobalContext() { return nullptr; }
/*static*/
void GLContextProviderEGL::Shutdown() {
const RefPtr<GLLibraryEGL> egl = GLLibraryEGL::Get();
if (egl) {
egl->Shutdown();
}
}
} /* namespace gl */
} /* namespace mozilla */
#undef EGL_ATTRIBS_LIST_SAFE_TERMINATION_WORKING_AROUND_BUGS
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