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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: 4 -*- */
/* 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 "mozilla/Util.h"
// please add new includes below Qt, otherwise it break Qt build due malloc wrapper conflicts
#if defined(XP_UNIX)
#ifdef MOZ_WIDGET_GTK
#include <gdk/gdkx.h>
// we're using default display for now
#define GET_NATIVE_WINDOW(aWidget) (EGLNativeWindowType)GDK_WINDOW_XID((GdkWindow *) aWidget->GetNativeData(NS_NATIVE_WINDOW))
#elif defined(MOZ_WIDGET_QT)
#include <QtOpenGL/QGLContext>
#define GLdouble_defined 1
// we're using default display for now
#define GET_NATIVE_WINDOW(aWidget) (EGLNativeWindowType)static_cast<QWidget*>(aWidget->GetNativeData(NS_NATIVE_SHELLWIDGET))->winId()
#elif defined(MOZ_WIDGET_GONK)
#define GET_NATIVE_WINDOW(aWidget) ((EGLNativeWindowType)aWidget->GetNativeData(NS_NATIVE_WINDOW))
#include "HwcComposer2D.h"
#endif
#if defined(MOZ_X11)
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include "mozilla/X11Util.h"
#include "gfxXlibSurface.h"
#endif
#if defined(ANDROID)
/* from widget */
#if defined(MOZ_WIDGET_ANDROID)
#include "AndroidBridge.h"
#include "nsSurfaceTexture.h"
#endif
#include <android/log.h>
#define LOG(args...) __android_log_print(ANDROID_LOG_INFO, "Gonk" , ## args)
# if defined(MOZ_WIDGET_GONK)
# include "cutils/properties.h"
# include <ui/GraphicBuffer.h>
using namespace android;
# endif
#endif
#define GLES2_LIB "libGLESv2.so"
#define GLES2_LIB2 "libGLESv2.so.2"
#elif defined(XP_WIN)
#include "nsIFile.h"
#define GLES2_LIB "libGLESv2.dll"
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN 1
#endif
#include <windows.h>
// a little helper
class AutoDestroyHWND {
public:
AutoDestroyHWND(HWND aWnd = NULL)
: mWnd(aWnd)
{
}
~AutoDestroyHWND() {
if (mWnd) {
::DestroyWindow(mWnd);
}
}
operator HWND() {
return mWnd;
}
HWND forget() {
HWND w = mWnd;
mWnd = NULL;
return w;
}
HWND operator=(HWND aWnd) {
if (mWnd && mWnd != aWnd) {
::DestroyWindow(mWnd);
}
mWnd = aWnd;
return mWnd;
}
HWND mWnd;
};
#else
#error "Platform not recognized"
#endif
#include "mozilla/Preferences.h"
#include "gfxUtils.h"
#include "gfxFailure.h"
#include "gfxASurface.h"
#include "gfxImageSurface.h"
#include "gfxPlatform.h"
#include "GLContextProvider.h"
#include "GLLibraryEGL.h"
#include "nsDebug.h"
#include "nsThreadUtils.h"
#include "nsIWidget.h"
#include "gfxCrashReporterUtils.h"
#if defined(MOZ_PLATFORM_MAEMO) || defined(MOZ_WIDGET_GONK)
static bool gUseBackingSurface = true;
#else
static bool gUseBackingSurface = false;
#endif
#ifdef MOZ_WIDGET_GONK
extern nsIntRect gScreenBounds;
#endif
#define EGL_DISPLAY() sEGLLibrary.Display()
namespace mozilla {
namespace gl {
static GLLibraryEGL sEGLLibrary;
#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)
#ifndef MOZ_ANDROID_OMTC
static EGLSurface
CreateSurfaceForWindow(nsIWidget *aWidget, EGLConfig config);
#endif
static bool
CreateConfig(EGLConfig* aConfig);
#ifdef MOZ_X11
static EGLConfig
CreateEGLSurfaceForXSurface(gfxASurface* aSurface, EGLConfig* aConfig = nullptr);
#endif
static EGLint gContextAttribs[] = {
LOCAL_EGL_CONTEXT_CLIENT_VERSION, 2,
LOCAL_EGL_NONE
};
static EGLint gContextAttribsRobustness[] = {
LOCAL_EGL_CONTEXT_CLIENT_VERSION, 2,
//LOCAL_EGL_CONTEXT_ROBUST_ACCESS_EXT, LOCAL_EGL_TRUE,
LOCAL_EGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_EXT, LOCAL_EGL_LOSE_CONTEXT_ON_RESET_EXT,
LOCAL_EGL_NONE
};
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;
}
class GLContextEGL : public GLContext
{
friend class TextureImageEGL;
static already_AddRefed<GLContextEGL>
CreateGLContext(const SurfaceCaps& caps,
GLContextEGL *shareContext,
bool isOffscreen,
EGLConfig config,
EGLSurface surface)
{
if (sEGLLibrary.fBindAPI(LOCAL_EGL_OPENGL_ES_API) == LOCAL_EGL_FALSE) {
NS_WARNING("Failed to bind API to GLES!");
return nullptr;
}
EGLContext eglShareContext = shareContext ? shareContext->mContext
: EGL_NO_CONTEXT;
EGLint* attribs = sEGLLibrary.HasRobustness() ? gContextAttribsRobustness
: gContextAttribs;
EGLContext context = sEGLLibrary.fCreateContext(EGL_DISPLAY(),
config,
eglShareContext,
attribs);
if (!context && shareContext) {
shareContext = nullptr;
context = sEGLLibrary.fCreateContext(EGL_DISPLAY(),
config,
EGL_NO_CONTEXT,
attribs);
}
if (!context) {
NS_WARNING("Failed to create EGLContext!");
return nullptr;
}
nsRefPtr<GLContextEGL> glContext = new GLContextEGL(caps,
shareContext,
isOffscreen,
config,
surface,
context);
if (!glContext->Init())
return nullptr;
return glContext.forget();
}
public:
GLContextEGL(const SurfaceCaps& caps,
GLContext* shareContext,
bool isOffscreen,
EGLConfig config,
EGLSurface surface,
EGLContext context)
: GLContext(caps, shareContext, isOffscreen)
, mConfig(config)
, mSurface(surface)
, mCurSurface(surface)
, mContext(context)
, mPlatformContext(nullptr)
, mThebesSurface(nullptr)
, mBound(false)
, mIsPBuffer(false)
, mIsDoubleBuffered(false)
, mCanBindToTexture(false)
, mShareWithEGLImage(false)
, mTemporaryEGLImageTexture(0)
{
// any EGL contexts will always be GLESv2
SetIsGLES2(true);
#ifdef DEBUG
printf_stderr("Initializing context %p surface %p on display %p\n", mContext, mSurface, EGL_DISPLAY());
#endif
#ifdef MOZ_WIDGET_GONK
if (!mIsOffscreen) {
mHwc = HwcComposer2D::GetInstance();
MOZ_ASSERT(!mHwc->Initialized());
if (mHwc->Init(EGL_DISPLAY(), mSurface)) {
NS_WARNING("HWComposer initialization failed!");
mHwc = nullptr;
}
}
#endif
}
~GLContextEGL()
{
if (MakeCurrent()) {
if (mTemporaryEGLImageTexture != 0) {
fDeleteTextures(1, &mTemporaryEGLImageTexture);
mTemporaryEGLImageTexture = 0;
}
}
MarkDestroyed();
// If mGLWidget is non-null, then we've been given it by the GL context provider,
// and it's managed by the widget implementation. In this case, We can't destroy
// our contexts.
if (mPlatformContext)
return;
#ifdef DEBUG
printf_stderr("Destroying context %p surface %p on display %p\n", mContext, mSurface, EGL_DISPLAY());
#endif
sEGLLibrary.fDestroyContext(EGL_DISPLAY(), mContext);
if (mSurface && !mPlatformContext) {
sEGLLibrary.fDestroySurface(EGL_DISPLAY(), mSurface);
}
}
GLContextType GetContextType() {
return ContextTypeEGL;
}
bool Init()
{
#if defined(ANDROID)
// We can't use LoadApitraceLibrary here because the GLContext
// expects its own handle to the GL library
if (!OpenLibrary(APITRACE_LIB))
#endif
if (!OpenLibrary(GLES2_LIB)) {
#if defined(XP_UNIX)
if (!OpenLibrary(GLES2_LIB2)) {
NS_WARNING("Couldn't load GLES2 LIB.");
return false;
}
#endif
}
#ifdef MOZ_WIDGET_GONK
char propValue[PROPERTY_VALUE_MAX];
property_get("ro.build.version.sdk", propValue, "0");
if (atoi(propValue) < 15)
gUseBackingSurface = false;
#endif
bool current = MakeCurrent();
if (!current) {
gfx::LogFailure(NS_LITERAL_CSTRING(
"Couldn't get device attachments for device."));
return false;
}
SetupLookupFunction();
if (!InitWithPrefix("gl", true))
return false;
PR_STATIC_ASSERT(sizeof(GLint) >= sizeof(int32_t));
mMaxTextureImageSize = INT32_MAX;
mShareWithEGLImage = sEGLLibrary.HasKHRImageBase() &&
sEGLLibrary.HasKHRImageTexture2D() &&
IsExtensionSupported(OES_EGL_image);
return true;
}
bool IsDoubleBuffered() {
return mIsDoubleBuffered;
}
void SetIsDoubleBuffered(bool aIsDB) {
mIsDoubleBuffered = aIsDB;
}
virtual EGLContext GetEGLContext() {
return mContext;
}
virtual GLLibraryEGL* GetLibraryEGL() {
return &sEGLLibrary;
}
bool SupportsRobustness()
{
return sEGLLibrary.HasRobustness();
}
virtual bool IsANGLE()
{
return sEGLLibrary.IsANGLE();
}
bool BindTexImage()
{
if (!mSurface)
return false;
if (mBound && !ReleaseTexImage())
return false;
EGLBoolean success = sEGLLibrary.fBindTexImage(EGL_DISPLAY(),
(EGLSurface)mSurface, LOCAL_EGL_BACK_BUFFER);
if (success == LOCAL_EGL_FALSE)
return false;
mBound = true;
return true;
}
bool ReleaseTexImage()
{
if (!mBound)
return true;
if (!mSurface)
return false;
EGLBoolean success;
success = sEGLLibrary.fReleaseTexImage(EGL_DISPLAY(),
(EGLSurface)mSurface,
LOCAL_EGL_BACK_BUFFER);
if (success == LOCAL_EGL_FALSE)
return false;
mBound = false;
return true;
}
bool BindExternalBuffer(GLuint texture, void* buffer)
{
#if defined(MOZ_WIDGET_GONK)
EGLint attrs[] = {
LOCAL_EGL_IMAGE_PRESERVED, LOCAL_EGL_TRUE,
LOCAL_EGL_NONE, LOCAL_EGL_NONE
};
EGLImage image = sEGLLibrary.fCreateImage(EGL_DISPLAY(),
EGL_NO_CONTEXT,
LOCAL_EGL_NATIVE_BUFFER_ANDROID,
buffer, attrs);
fBindTexture(LOCAL_GL_TEXTURE_EXTERNAL, texture);
fEGLImageTargetTexture2D(LOCAL_GL_TEXTURE_EXTERNAL, image);
sEGLLibrary.fDestroyImage(EGL_DISPLAY(), image);
return true;
#else
return false;
#endif
}
bool UnbindExternalBuffer(GLuint texture)
{
#if defined(MOZ_WIDGET_GONK)
fActiveTexture(LOCAL_GL_TEXTURE0);
fBindTexture(LOCAL_GL_TEXTURE_2D, texture);
fTexImage2D(LOCAL_GL_TEXTURE_2D, 0,
LOCAL_GL_RGBA,
1, 1, 0,
LOCAL_GL_RGBA, LOCAL_GL_UNSIGNED_BYTE,
nullptr);
return true;
#else
return false;
#endif
}
#ifdef MOZ_WIDGET_GONK
virtual already_AddRefed<TextureImage>
CreateDirectTextureImage(GraphicBuffer* aBuffer, GLenum aWrapMode) MOZ_OVERRIDE;
#endif
virtual void MakeCurrent_EGLSurface(void* surf) {
EGLSurface eglSurface = (EGLSurface)surf;
if (!eglSurface)
eglSurface = mSurface;
if (eglSurface == mCurSurface)
return;
// Else, surface changed...
mCurSurface = eglSurface;
MakeCurrent(true);
}
bool MakeCurrentImpl(bool aForce = false) {
bool succeeded = true;
// Assume that EGL has the same problem as WGL does,
// where MakeCurrent with an already-current context is
// still expensive.
#ifndef MOZ_WIDGET_QT
if (!mSurface) {
// We need to be able to bind NO_SURFACE when we don't
// have access to a surface. We won't be drawing to the screen
// but we will be able to do things like resource releases.
succeeded = sEGLLibrary.fMakeCurrent(EGL_DISPLAY(),
EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT);
if (!succeeded && sEGLLibrary.fGetError() == LOCAL_EGL_CONTEXT_LOST) {
mContextLost = true;
NS_WARNING("EGL context has been lost.");
}
NS_ASSERTION(succeeded, "Failed to make GL context current!");
return succeeded;
}
#endif
if (aForce || sEGLLibrary.fGetCurrentContext() != mContext) {
#ifdef MOZ_WIDGET_QT
// Shared Qt GL context need to be informed about context switch
if (mSharedContext) {
QGLContext* qglCtx = static_cast<QGLContext*>(static_cast<GLContextEGL*>(mSharedContext.get())->mPlatformContext);
if (qglCtx) {
qglCtx->doneCurrent();
}
}
#endif
succeeded = sEGLLibrary.fMakeCurrent(EGL_DISPLAY(),
mCurSurface, mCurSurface,
mContext);
int eglError = sEGLLibrary.fGetError();
if (!succeeded) {
if (eglError == LOCAL_EGL_CONTEXT_LOST) {
mContextLost = true;
NS_WARNING("EGL context has been lost.");
} else {
NS_WARNING("Failed to make GL context current!");
#ifdef DEBUG
printf_stderr("EGL Error: 0x%04x\n", eglError);
#endif
}
}
}
return succeeded;
}
virtual bool IsCurrent() {
return sEGLLibrary.fGetCurrentContext() == mContext;
}
#ifdef MOZ_WIDGET_QT
virtual bool
RenewSurface() {
/* We don't support renewing on QT because we don't create the surface ourselves */
return false;
}
#else
virtual bool
RenewSurface() {
sEGLLibrary.fMakeCurrent(EGL_DISPLAY(), EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT);
if (!mSurface) {
#ifdef MOZ_ANDROID_OMTC
mSurface = mozilla::AndroidBridge::Bridge()->ProvideEGLSurface();
if (!mSurface) {
return false;
}
#else
EGLConfig config;
CreateConfig(&config);
mSurface = CreateSurfaceForWindow(NULL, config);
#endif
}
return sEGLLibrary.fMakeCurrent(EGL_DISPLAY(),
mSurface, mSurface,
mContext);
}
#endif
virtual void
ReleaseSurface() {
if (mSurface && !mPlatformContext) {
sEGLLibrary.fMakeCurrent(EGL_DISPLAY(), EGL_NO_SURFACE, EGL_NO_SURFACE,
EGL_NO_CONTEXT);
sEGLLibrary.fDestroySurface(EGL_DISPLAY(), mSurface);
mSurface = NULL;
}
}
bool SetupLookupFunction()
{
mLookupFunc = (PlatformLookupFunction)sEGLLibrary.mSymbols.fGetProcAddress;
return true;
}
void *GetNativeData(NativeDataType aType)
{
switch (aType) {
case NativeGLContext:
return mContext;
default:
return nullptr;
}
}
bool SwapBuffers()
{
if (mSurface && !mPlatformContext) {
#ifdef MOZ_WIDGET_GONK
if (mHwc)
return !mHwc->swapBuffers((hwc_display_t)EGL_DISPLAY(),
(hwc_surface_t)mSurface);
else
#endif
return sEGLLibrary.fSwapBuffers(EGL_DISPLAY(), mSurface);
} else {
return false;
}
}
// GLContext interface - returns Tiled Texture Image in our case
virtual already_AddRefed<TextureImage>
CreateTextureImage(const nsIntSize& aSize,
TextureImage::ContentType aContentType,
GLenum aWrapMode,
TextureImage::Flags aFlags = TextureImage::NoFlags);
// a function to generate Tiles for Tiled Texture Image
virtual already_AddRefed<TextureImage>
TileGenFunc(const nsIntSize& aSize,
TextureImage::ContentType aContentType,
TextureImage::Flags aFlags = TextureImage::NoFlags);
// hold a reference to the given surface
// for the lifetime of this context.
void HoldSurface(gfxASurface *aSurf) {
mThebesSurface = aSurf;
}
void SetPlatformContext(void *context) {
mPlatformContext = context;
}
EGLContext Context() {
return mContext;
}
bool BindTex2DOffscreen(GLContext *aOffscreen);
void UnbindTex2DOffscreen(GLContext *aOffscreen);
bool ResizeOffscreen(const gfxIntSize& aNewSize);
void BindOffscreenFramebuffer();
static already_AddRefed<GLContextEGL>
CreateEGLPixmapOffscreenContext(const gfxIntSize& size);
static already_AddRefed<GLContextEGL>
CreateEGLPBufferOffscreenContext(const gfxIntSize& size);
virtual bool HasLockSurface() {
return sEGLLibrary.HasKHRLockSurface();
}
virtual SharedTextureHandle CreateSharedHandle(SharedTextureShareType shareType);
virtual SharedTextureHandle CreateSharedHandle(SharedTextureShareType shareType,
void* buffer,
SharedTextureBufferType bufferType);
virtual void UpdateSharedHandle(SharedTextureShareType shareType,
SharedTextureHandle sharedHandle);
virtual void ReleaseSharedHandle(SharedTextureShareType shareType,
SharedTextureHandle sharedHandle);
virtual bool GetSharedHandleDetails(SharedTextureShareType shareType,
SharedTextureHandle sharedHandle,
SharedHandleDetails& details);
virtual bool AttachSharedHandle(SharedTextureShareType shareType,
SharedTextureHandle sharedHandle);
protected:
friend class GLContextProviderEGL;
EGLConfig mConfig;
EGLSurface mSurface;
EGLSurface mCurSurface;
EGLContext mContext;
void *mPlatformContext;
nsRefPtr<gfxASurface> mThebesSurface;
bool mBound;
bool mIsPBuffer;
bool mIsDoubleBuffered;
bool mCanBindToTexture;
bool mShareWithEGLImage;
#ifdef MOZ_WIDGET_GONK
nsRefPtr<HwcComposer2D> mHwc;
#endif
// A dummy texture ID that can be used when we need a texture object whose
// images we're going to define with EGLImageTargetTexture2D.
GLuint mTemporaryEGLImageTexture;
static EGLSurface CreatePBufferSurfaceTryingPowerOfTwo(EGLConfig config,
EGLenum bindToTextureFormat,
gfxIntSize& 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);
}
pbattrs.AppendElement(LOCAL_EGL_NONE);
surface = sEGLLibrary.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;
}
};
typedef enum {
Image
#ifdef MOZ_WIDGET_ANDROID
, SurfaceTexture
#endif
} SharedHandleType;
class SharedTextureHandleWrapper
{
public:
SharedTextureHandleWrapper(SharedHandleType aHandleType) : mHandleType(aHandleType)
{
}
virtual ~SharedTextureHandleWrapper()
{
}
SharedHandleType Type() { return mHandleType; }
SharedHandleType mHandleType;
};
#ifdef MOZ_WIDGET_ANDROID
class SurfaceTextureWrapper: public SharedTextureHandleWrapper
{
public:
SurfaceTextureWrapper(nsSurfaceTexture* aSurfaceTexture) :
SharedTextureHandleWrapper(SharedHandleType::SurfaceTexture)
, mSurfaceTexture(aSurfaceTexture)
{
}
virtual ~SurfaceTextureWrapper() {
mSurfaceTexture = nullptr;
}
nsSurfaceTexture* SurfaceTexture() { return mSurfaceTexture; }
nsRefPtr<nsSurfaceTexture> mSurfaceTexture;
};
#endif // MOZ_WIDGET_ANDROID
class EGLTextureWrapper : public SharedTextureHandleWrapper
{
public:
EGLTextureWrapper() :
SharedTextureHandleWrapper(SharedHandleType::Image)
, mEGLImage(nullptr)
, mSyncObject(nullptr)
{
}
// Args are the active GL context, and a texture in that GL
// context for which to create an EGLImage. After the EGLImage
// is created, the texture is unused by EGLTextureWrapper.
bool CreateEGLImage(GLContextEGL *ctx, GLuint texture) {
MOZ_ASSERT(!mEGLImage && texture && sEGLLibrary.HasKHRImageBase());
static const EGLint eglAttributes[] = {
LOCAL_EGL_NONE
};
EGLContext eglContext = (EGLContext)ctx->GetEGLContext();
mEGLImage = sEGLLibrary.fCreateImage(EGL_DISPLAY(), eglContext, LOCAL_EGL_GL_TEXTURE_2D,
(EGLClientBuffer)texture, eglAttributes);
if (!mEGLImage) {
#ifdef DEBUG
printf_stderr("Could not create EGL images: ERROR (0x%04x)\n", sEGLLibrary.fGetError());
#endif
return false;
}
return true;
}
virtual ~EGLTextureWrapper() {
if (mEGLImage) {
sEGLLibrary.fDestroyImage(EGL_DISPLAY(), mEGLImage);
mEGLImage = nullptr;
}
}
const EGLImage GetEGLImage() {
return mEGLImage;
}
// Insert a sync point on the given context, which should be the current active
// context.
bool MakeSync(GLContext *ctx) {
MOZ_ASSERT(mSyncObject == nullptr);
if (sEGLLibrary.IsExtensionSupported(GLLibraryEGL::KHR_fence_sync)) {
mSyncObject = sEGLLibrary.fCreateSync(EGL_DISPLAY(), LOCAL_EGL_SYNC_FENCE, nullptr);
// We need to flush to make sure the sync object enters the command stream;
// we can't use EGL_SYNC_FLUSH_COMMANDS_BIT at wait time, because the wait
// happens on a different thread/context.
ctx->fFlush();
}
if (mSyncObject == EGL_NO_SYNC) {
// we failed to create one, so just do a finish
ctx->fFinish();
}
return true;
}
bool WaitSync() {
if (!mSyncObject) {
// if we have no sync object, then we did a Finish() earlier
return true;
}
// wait at most 1 second; this should really be never/rarely hit
const uint64_t ns_per_ms = 1000 * 1000;
EGLTime timeout = 1000 * ns_per_ms;
EGLint result = sEGLLibrary.fClientWaitSync(EGL_DISPLAY(), mSyncObject, 0, timeout);
sEGLLibrary.fDestroySync(EGL_DISPLAY(), mSyncObject);
mSyncObject = nullptr;
return result == LOCAL_EGL_CONDITION_SATISFIED;
}
private:
EGLImage mEGLImage;
EGLSync mSyncObject;
};
void
GLContextEGL::UpdateSharedHandle(SharedTextureShareType shareType,
SharedTextureHandle sharedHandle)
{
if (shareType != SameProcess) {
NS_ERROR("Implementation not available for this sharing type");
return;
}
SharedTextureHandleWrapper* wrapper = reinterpret_cast<SharedTextureHandleWrapper*>(sharedHandle);
NS_ASSERTION(wrapper->Type() == SharedHandleType::Image, "Expected EGLImage shared handle");
NS_ASSERTION(mShareWithEGLImage, "EGLImage not supported or disabled in runtime");
EGLTextureWrapper* wrap = reinterpret_cast<EGLTextureWrapper*>(wrapper);
// We need to copy the current GLContext drawing buffer to the texture
// exported by the EGLImage. Need to save both the read FBO and the texture
// binding, because we're going to munge them to do this.
ScopedBindTexture autoTex(this, mTemporaryEGLImageTexture);
fEGLImageTargetTexture2D(LOCAL_GL_TEXTURE_2D, wrap->GetEGLImage());
// CopyTexSubImage2D, is ~2x slower than simple FBO render to texture with
// draw quads, but if we want that, we need to assure that our default
// framebuffer is texture-backed.
gfxIntSize size = OffscreenSize();
BlitFramebufferToTexture(0, mTemporaryEGLImageTexture, size, size);
// Make sure our copy is finished, so that we can be ready to draw
// in different thread GLContext. If we have KHR_fence_sync, then
// we insert a sync object, otherwise we have to do a GuaranteeResolve.
wrap->MakeSync(this);
}
SharedTextureHandle
GLContextEGL::CreateSharedHandle(SharedTextureShareType shareType)
{
if (shareType != SameProcess)
return 0;
if (!mShareWithEGLImage)
return 0;
MakeCurrent();
mTemporaryEGLImageTexture = CreateTextureForOffscreen(GetGLFormats(), OffscreenSize());
EGLTextureWrapper* tex = new EGLTextureWrapper();
bool ok = tex->CreateEGLImage(this, mTemporaryEGLImageTexture);
if (!ok) {
NS_ERROR("EGLImage creation for EGLTextureWrapper failed");
ReleaseSharedHandle(shareType, (SharedTextureHandle)tex);
return 0;
}
// Raw pointer shared across threads
return (SharedTextureHandle)tex;
}
SharedTextureHandle
GLContextEGL::CreateSharedHandle(SharedTextureShareType shareType,
void* buffer,
SharedTextureBufferType bufferType)
{
// Both EGLImage and SurfaceTexture only support same-process currently, but
// it's possible to make SurfaceTexture work across processes. We should do that.
if (shareType != SameProcess)
return 0;
switch (bufferType) {
#ifdef MOZ_WIDGET_ANDROID
case SharedTextureBufferType::SurfaceTexture:
if (!IsExtensionSupported(GLContext::OES_EGL_image_external)) {
NS_WARNING("Missing GL_OES_EGL_image_external");
return 0;
}
return (SharedTextureHandle) new SurfaceTextureWrapper(reinterpret_cast<nsSurfaceTexture*>(buffer));
#endif
case SharedTextureBufferType::TextureID: {
if (!mShareWithEGLImage)
return 0;
GLuint texture = (uintptr_t)buffer;
EGLTextureWrapper* tex = new EGLTextureWrapper();
if (!tex->CreateEGLImage(this, texture)) {
NS_ERROR("EGLImage creation for EGLTextureWrapper failed");
delete tex;
return 0;
}
return (SharedTextureHandle)tex;
}
default:
NS_ERROR("Unknown shared texture buffer type");
return 0;
}
}
void GLContextEGL::ReleaseSharedHandle(SharedTextureShareType shareType,
SharedTextureHandle sharedHandle)
{
if (shareType != SameProcess) {
NS_ERROR("Implementation not available for this sharing type");
return;
}
SharedTextureHandleWrapper* wrapper = reinterpret_cast<SharedTextureHandleWrapper*>(sharedHandle);
switch (wrapper->Type()) {
#ifdef MOZ_WIDGET_ANDROID
case SharedHandleType::SurfaceTexture:
delete wrapper;
break;
#endif
case SharedHandleType::Image: {
NS_ASSERTION(mShareWithEGLImage, "EGLImage not supported or disabled in runtime");
EGLTextureWrapper* wrap = (EGLTextureWrapper*)sharedHandle;
delete wrap;
break;
}
default:
NS_ERROR("Unknown shared handle type");
return;
}
}
bool GLContextEGL::GetSharedHandleDetails(SharedTextureShareType shareType,
SharedTextureHandle sharedHandle,
SharedHandleDetails& details)
{
if (shareType != SameProcess)
return false;
SharedTextureHandleWrapper* wrapper = reinterpret_cast<SharedTextureHandleWrapper*>(sharedHandle);
switch (wrapper->Type()) {
#ifdef MOZ_WIDGET_ANDROID
case SharedHandleType::SurfaceTexture: {
SurfaceTextureWrapper* surfaceWrapper = reinterpret_cast<SurfaceTextureWrapper*>(wrapper);
details.mTarget = LOCAL_GL_TEXTURE_EXTERNAL;
details.mProgramType = RGBALayerExternalProgramType;
surfaceWrapper->SurfaceTexture()->GetTransformMatrix(details.mTextureTransform);
break;
}
#endif
case SharedHandleType::Image:
details.mTarget = LOCAL_GL_TEXTURE_2D;
details.mProgramType = RGBALayerProgramType;
break;
default:
NS_ERROR("Unknown shared handle type");
return false;
}
return true;
}
bool GLContextEGL::AttachSharedHandle(SharedTextureShareType shareType,
SharedTextureHandle sharedHandle)
{
if (shareType != SameProcess)
return false;
SharedTextureHandleWrapper* wrapper = reinterpret_cast<SharedTextureHandleWrapper*>(sharedHandle);
switch (wrapper->Type()) {
#ifdef MOZ_WIDGET_ANDROID
case SharedHandleType::SurfaceTexture: {
#ifndef DEBUG
/**
* NOTE: SurfaceTexture spams us if there are any existing GL errors, so we'll clear
* them here in order to avoid that.
*/
GetAndClearError();
#endif
SurfaceTextureWrapper* surfaceTextureWrapper = reinterpret_cast<SurfaceTextureWrapper*>(wrapper);
// FIXME: SurfaceTexture provides a transform matrix which is supposed to
// be applied to the texture coordinates. We should return that here
// so we can render correctly. Bug 775083
surfaceTextureWrapper->SurfaceTexture()->UpdateTexImage();
break;
}
#endif // MOZ_WIDGET_ANDROID
case SharedHandleType::Image: {
NS_ASSERTION(mShareWithEGLImage, "EGLImage not supported or disabled in runtime");
EGLTextureWrapper* wrap = (EGLTextureWrapper*)sharedHandle;
wrap->WaitSync();
fEGLImageTargetTexture2D(LOCAL_GL_TEXTURE_2D, wrap->GetEGLImage());
break;
}
default:
NS_ERROR("Unknown shared handle type");
return false;
}
return true;
}
bool
GLContextEGL::ResizeOffscreen(const gfxIntSize& aNewSize)
{
return ResizeScreenBuffer(aNewSize);
}
static GLContextEGL *
GetGlobalContextEGL()
{
return static_cast<GLContextEGL*>(GLContextProviderEGL::GetGlobalContext());
}
static GLenum
GLFormatForImage(gfxASurface::gfxImageFormat aFormat)
{
switch (aFormat) {
case gfxASurface::ImageFormatARGB32:
case gfxASurface::ImageFormatRGB24:
// Thebes only supports RGBX, not packed RGB.
return LOCAL_GL_RGBA;
case gfxASurface::ImageFormatRGB16_565:
return LOCAL_GL_RGB;
case gfxASurface::ImageFormatA8:
return LOCAL_GL_LUMINANCE;
default:
NS_WARNING("Unknown GL format for Image format");
}
return 0;
}
#ifdef MOZ_WIDGET_GONK
static PixelFormat
PixelFormatForImage(gfxASurface::gfxImageFormat aFormat)
{
switch (aFormat) {
case gfxASurface::ImageFormatARGB32:
return PIXEL_FORMAT_RGBA_8888;
case gfxASurface::ImageFormatRGB24:
return PIXEL_FORMAT_RGBX_8888;
case gfxASurface::ImageFormatRGB16_565:
return PIXEL_FORMAT_RGB_565;
case gfxASurface::ImageFormatA8:
return PIXEL_FORMAT_L_8;
default:
MOZ_NOT_REACHED("Unknown gralloc pixel format for Image format");
}
return 0;
}
static gfxASurface::gfxContentType
ContentTypeForPixelFormat(PixelFormat aFormat)
{
switch (aFormat) {
case PIXEL_FORMAT_L_8:
return gfxASurface::CONTENT_ALPHA;
case PIXEL_FORMAT_RGBA_8888:
return gfxASurface::CONTENT_COLOR_ALPHA;
case PIXEL_FORMAT_RGBX_8888:
case PIXEL_FORMAT_RGB_565:
return gfxASurface::CONTENT_COLOR;
default:
MOZ_NOT_REACHED("Unknown content type for gralloc pixel format");
}
return gfxASurface::CONTENT_COLOR;
}
#endif
static GLenum
GLTypeForImage(gfxASurface::gfxImageFormat aFormat)
{
switch (aFormat) {
case gfxASurface::ImageFormatARGB32:
case gfxASurface::ImageFormatRGB24:
case gfxASurface::ImageFormatA8:
return LOCAL_GL_UNSIGNED_BYTE;
case gfxASurface::ImageFormatRGB16_565:
return LOCAL_GL_UNSIGNED_SHORT_5_6_5;
default:
NS_WARNING("Unknown GL format for Image format");
}
return 0;
}
class TextureImageEGL
: public TextureImage
{
public:
TextureImageEGL(GLuint aTexture,
const nsIntSize& aSize,
GLenum aWrapMode,
ContentType aContentType,
GLContext* aContext,
Flags aFlags = TextureImage::NoFlags,
TextureState aTextureState = Created)
: TextureImage(aSize, aWrapMode, aContentType, aFlags)
, mGLContext(aContext)
, mUpdateFormat(gfxASurface::ImageFormatUnknown)
, mEGLImage(nullptr)
, mTexture(aTexture)
, mSurface(nullptr)
, mConfig(nullptr)
, mTextureState(aTextureState)
, mBound(false)
, mIsLocked(false)
{
mUpdateFormat = gfxPlatform::GetPlatform()->OptimalFormatForContent(GetContentType());
if (gUseBackingSurface) {
#ifdef MOZ_WIDGET_GONK
switch (mUpdateFormat) {
case gfxASurface::ImageFormatARGB32:
mShaderType = BGRALayerProgramType;
break;
case gfxASurface::ImageFormatRGB24:
mUpdateFormat = gfxASurface::ImageFormatARGB32;
mShaderType = BGRXLayerProgramType;
break;
case gfxASurface::ImageFormatRGB16_565:
mShaderType = RGBXLayerProgramType;
break;
case gfxASurface::ImageFormatA8:
mShaderType = RGBALayerProgramType;
break;
default:
MOZ_NOT_REACHED("Unknown update format");
}
#else
if (mUpdateFormat != gfxASurface::ImageFormatARGB32) {
mShaderType = RGBXLayerProgramType;
} else {
mShaderType = RGBALayerProgramType;
}
#endif
Resize(aSize);
} else {
if (mUpdateFormat == gfxASurface::ImageFormatRGB16_565) {
mShaderType = RGBXLayerProgramType;
} else if (mUpdateFormat == gfxASurface::ImageFormatRGB24) {
// RGB24 means really RGBX for Thebes, which means we have to
// use the right shader and ignore the uninitialized alpha
// value.
mShaderType = BGRXLayerProgramType;
} else {
mShaderType = BGRALayerProgramType;
}
}
}
virtual ~TextureImageEGL()
{
GLContext *ctx = mGLContext;
if (ctx->IsDestroyed() || !ctx->IsOwningThreadCurrent()) {
ctx = ctx->GetSharedContext();
}
// If we have a context, then we need to delete the texture;
// if we don't have a context (either real or shared),
// then they went away when the contex was deleted, because it
// was the only one that had access to it.
if (ctx && !ctx->IsDestroyed()) {
ctx->MakeCurrent();
ctx->fDeleteTextures(1, &mTexture);
ReleaseTexImage();
DestroyEGLSurface();
}
}
bool UsingDirectTexture()
{
#ifdef MOZ_WIDGET_GONK
if (mGraphicBuffer != nullptr)
return true;
#endif
return !!mBackingSurface;
}
virtual void GetUpdateRegion(nsIntRegion& aForRegion)
{
if (mTextureState != Valid) {
// if the texture hasn't been initialized yet, force the
// client to paint everything
aForRegion = nsIntRect(nsIntPoint(0, 0), mSize);
}
if (UsingDirectTexture()) {
return;
}
// We can only draw a rectangle, not subregions due to
// the way that our texture upload functions work. If
// needed, we /could/ do multiple texture uploads if we have
// non-overlapping rects, but that's a tradeoff.
aForRegion = nsIntRegion(aForRegion.GetBounds());
}
virtual gfxASurface* BeginUpdate(nsIntRegion& aRegion)
{
NS_ASSERTION(!mUpdateSurface, "BeginUpdate() without EndUpdate()?");
// determine the region the client will need to repaint
GetUpdateRegion(aRegion);
mUpdateRect = aRegion.GetBounds();
//printf_stderr("BeginUpdate with updateRect [%d %d %d %d]\n", mUpdateRect.x, mUpdateRect.y, mUpdateRect.width, mUpdateRect.height);
if (!nsIntRect(nsIntPoint(0, 0), mSize).Contains(mUpdateRect)) {
NS_ERROR("update outside of image");
return NULL;
}
#ifdef MOZ_WIDGET_GONK
if (mGraphicBuffer != nullptr) {
mUpdateSurface = GetLockSurface();
return mUpdateSurface;
}
#endif
if (mBackingSurface) {
if (sEGLLibrary.HasKHRLockSurface()) {
mUpdateSurface = GetLockSurface();
} else {
mUpdateSurface = mBackingSurface;
}
return mUpdateSurface;
}
//printf_stderr("creating image surface %dx%d format %d\n", mUpdateRect.width, mUpdateRect.height, mUpdateFormat);
mUpdateSurface =
new gfxImageSurface(gfxIntSize(mUpdateRect.width, mUpdateRect.height),
mUpdateFormat);
mUpdateSurface->SetDeviceOffset(gfxPoint(-mUpdateRect.x, -mUpdateRect.y));
return mUpdateSurface;
}
virtual void EndUpdate()
{
NS_ASSERTION(!!mUpdateSurface, "EndUpdate() without BeginUpdate()?");
if (mIsLocked) {
UnlockSurface();
mTextureState = Valid;
mUpdateSurface = nullptr;
return;
}
if (mBackingSurface && mUpdateSurface == mBackingSurface) {
#ifdef MOZ_X11
if (mBackingSurface->GetType() == gfxASurface::SurfaceTypeXlib) {
FinishX(DefaultXDisplay());
}
#endif
mBackingSurface->SetDeviceOffset(gfxPoint(0, 0));
mTextureState = Valid;
mUpdateSurface = nullptr;
return;
}
//printf_stderr("EndUpdate: slow path");
// This is the slower path -- we didn't have any way to set up
// a fast mapping between our cairo target surface and the GL
// texture, so we have to upload data.
// Undo the device offset that BeginUpdate set; doesn't much
// matter for us here, but important if we ever do anything
// directly with the surface.
mUpdateSurface->SetDeviceOffset(gfxPoint(0, 0));
nsRefPtr<gfxImageSurface> uploadImage = nullptr;
gfxIntSize updateSize(mUpdateRect.width, mUpdateRect.height);
NS_ASSERTION(mUpdateSurface->GetType() == gfxASurface::SurfaceTypeImage &&
mUpdateSurface->GetSize() == updateSize,
"Upload image isn't an image surface when one is expected, or is wrong size!");
uploadImage = static_cast<gfxImageSurface*>(mUpdateSurface.get());
if (!uploadImage) {
return;
}
mGLContext->MakeCurrent();
mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
if (mTextureState != Valid) {
NS_ASSERTION(mUpdateRect.x == 0 && mUpdateRect.y == 0 &&
mUpdateRect.Size() == mSize,
"Bad initial update on non-created texture!");
mGLContext->fTexImage2D(LOCAL_GL_TEXTURE_2D,
0,
GLFormatForImage(mUpdateFormat),
mUpdateRect.width,
mUpdateRect.height,
0,
GLFormatForImage(uploadImage->Format()),
GLTypeForImage(uploadImage->Format()),
uploadImage->Data());
} else {
mGLContext->fTexSubImage2D(LOCAL_GL_TEXTURE_2D,
0,
mUpdateRect.x,
mUpdateRect.y,
mUpdateRect.width,
mUpdateRect.height,
GLFormatForImage(uploadImage->Format()),
GLTypeForImage(uploadImage->Format()),
uploadImage->Data());
}
mUpdateSurface = nullptr;
mTextureState = Valid;
return; // mTexture is bound
}
virtual bool DirectUpdate(gfxASurface* aSurf, const nsIntRegion& aRegion, const nsIntPoint& aFrom /* = nsIntPoint(0, 0) */)
{
nsIntRect bounds = aRegion.GetBounds();
nsIntRegion region;
if (mTextureState != Valid) {
bounds = nsIntRect(0, 0, mSize.width, mSize.height);
region = nsIntRegion(bounds);
} else {
region = aRegion;
}
if ((mBackingSurface && sEGLLibrary.HasKHRLockSurface())
#ifdef MOZ_WIDGET_GONK
|| (mGraphicBuffer != nullptr)
#endif
) {
mUpdateSurface = GetLockSurface();
if (mUpdateSurface) {
nsRefPtr<gfxContext> ctx = new gfxContext(mUpdateSurface);
gfxUtils::ClipToRegion(ctx, aRegion);
ctx->SetSource(aSurf, gfxPoint(-aFrom.x, -aFrom.y));
ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
ctx->Paint();
mUpdateSurface = nullptr;
UnlockSurface();
}
} else {
mShaderType =
mGLContext->UploadSurfaceToTexture(aSurf,
region,
mTexture,
mTextureState == Created,
bounds.TopLeft() + aFrom,
false);
}
mTextureState = Valid;
return true;
}
virtual void BindTexture(GLenum aTextureUnit)
{
// Ensure the texture is allocated before it is used.
if (mTextureState == Created) {
Resize(mSize);
}
#ifdef MOZ_WIDGET_GONK
if (UsingDirectTexture()) {
mGLContext->fActiveTexture(aTextureUnit);
mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
mGLContext->fEGLImageTargetTexture2D(LOCAL_GL_TEXTURE_2D, mEGLImage);
if (sEGLLibrary.fGetError() != LOCAL_EGL_SUCCESS) {
LOG("Could not set image target texture. ERROR (0x%04x)", sEGLLibrary.fGetError());
}
} else
#endif
{
mGLContext->fActiveTexture(aTextureUnit);
mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
mGLContext->fActiveTexture(LOCAL_GL_TEXTURE0);
}
}
virtual GLuint GetTextureID()
{
// Ensure the texture is allocated before it is used.
if (mTextureState == Created) {
Resize(mSize);
}
return mTexture;
};
virtual bool InUpdate() const { return !!mUpdateSurface; }
virtual void Resize(const nsIntSize& aSize)
{
NS_ASSERTION(!mUpdateSurface, "Resize() while in update?");
if (mSize == aSize && mTextureState != Created)
return;
mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
// Try to generate a backin surface first if we have the ability
if (gUseBackingSurface) {
CreateBackingSurface(gfxIntSize(aSize.width, aSize.height));
}
if (!UsingDirectTexture()) {
// If we don't have a backing surface or failed to obtain one,
// use the GL Texture failsafe
mGLContext->fTexImage2D(LOCAL_GL_TEXTURE_2D,
0,
GLFormatForImage(mUpdateFormat),
aSize.width,
aSize.height,
0,
GLFormatForImage(mUpdateFormat),
GLTypeForImage(mUpdateFormat),
NULL);
}
mTextureState = Allocated;
mSize = aSize;
}
bool BindTexImage()
{
if (mBound && !ReleaseTexImage())
return false;
EGLBoolean success =
sEGLLibrary.fBindTexImage(EGL_DISPLAY(),
(EGLSurface)mSurface,
LOCAL_EGL_BACK_BUFFER);
if (success == LOCAL_EGL_FALSE)
return false;
mBound = true;
return true;
}
bool ReleaseTexImage()
{
if (!mBound)
return true;
EGLBoolean success =
sEGLLibrary.fReleaseTexImage(EGL_DISPLAY(),
(EGLSurface)mSurface,
LOCAL_EGL_BACK_BUFFER);
if (success == LOCAL_EGL_FALSE)
return false;
mBound = false;
return true;
}
virtual already_AddRefed<gfxImageSurface> GetLockSurface()
{
if (mIsLocked) {
NS_WARNING("Can't lock surface twice");
return nullptr;
}
#ifdef MOZ_WIDGET_GONK
if (mGraphicBuffer != nullptr) {
// Unset the EGLImage target so that we don't get clashing locks
mGLContext->MakeCurrent(true);
mGLContext->UnbindExternalBuffer(mTexture);
void *vaddr;
if (mGraphicBuffer->lock(GraphicBuffer::USAGE_SW_READ_OFTEN |
GraphicBuffer::USAGE_SW_WRITE_OFTEN,
&vaddr) != OK) {
LOG("Could not lock GraphicBuffer");
return nullptr;
}
nsRefPtr<gfxImageSurface> surface =
new gfxImageSurface(reinterpret_cast<unsigned char *>(vaddr),
gfxIntSize(mSize.width, mSize.height),
mGraphicBuffer->getStride() * gfxUtils::ImageFormatToDepth(mUpdateFormat) / 8,
mUpdateFormat);
mIsLocked = true;
return surface.forget();
}
#endif
if (!sEGLLibrary.HasKHRLockSurface()) {
NS_WARNING("GetLockSurface called, but no EGL_KHR_lock_surface extension!");
return nullptr;
}
if (!CreateEGLSurface(mBackingSurface)) {
NS_WARNING("Failed to create EGL surface");
return nullptr;
}
static EGLint lock_attribs[] = {
LOCAL_EGL_MAP_PRESERVE_PIXELS_KHR, LOCAL_EGL_TRUE,
LOCAL_EGL_LOCK_USAGE_HINT_KHR, LOCAL_EGL_READ_SURFACE_BIT_KHR | LOCAL_EGL_WRITE_SURFACE_BIT_KHR,
LOCAL_EGL_NONE
};
sEGLLibrary.fLockSurface(EGL_DISPLAY(), mSurface, lock_attribs);
mIsLocked = true;
unsigned char *data = nullptr;
int pitch = 0;
int pixsize = 0;
sEGLLibrary.fQuerySurface(EGL_DISPLAY(), mSurface, LOCAL_EGL_BITMAP_POINTER_KHR, (EGLint*)&data);
sEGLLibrary.fQuerySurface(EGL_DISPLAY(), mSurface, LOCAL_EGL_BITMAP_PITCH_KHR, &pitch);
sEGLLibrary.fQuerySurface(EGL_DISPLAY(), mSurface, LOCAL_EGL_BITMAP_PIXEL_SIZE_KHR, &pixsize);
nsRefPtr<gfxImageSurface> sharedImage =
new gfxImageSurface(data,
mBackingSurface->GetSize(),
pitch,
mUpdateFormat);
return sharedImage.forget();
}
virtual void UnlockSurface()
{
if (!mIsLocked) {
NS_WARNING("UnlockSurface called, surface not locked!");
return;
}
mIsLocked = false;
#ifdef MOZ_WIDGET_GONK
if (mGraphicBuffer != nullptr) {
mGraphicBuffer->unlock();
return;
}
#endif
sEGLLibrary.fUnlockSurface(EGL_DISPLAY(), mSurface);
}
virtual already_AddRefed<gfxASurface> GetBackingSurface()
{
nsRefPtr<gfxASurface> copy = mBackingSurface;
return copy.forget();
}
virtual bool CreateEGLSurface(gfxASurface* aSurface)
{
#ifdef MOZ_X11
if (!aSurface) {
NS_WARNING("no surface");
return false;
}
if (aSurface->GetType() != gfxASurface::SurfaceTypeXlib) {
NS_WARNING("wrong surface type, must be xlib");
return false;
}
if (mSurface) {
return true;
}
EGLSurface surface = CreateEGLSurfaceForXSurface(aSurface, &mConfig);
if (!surface) {
NS_WARNING("couldn't find X config for surface");
return false;
}
mSurface = surface;
return true;
#else
return false;
#endif
}
virtual void DestroyEGLSurface(void)
{
#ifdef MOZ_WIDGET_GONK
mGraphicBuffer.clear();
if (mEGLImage) {
sEGLLibrary.fDestroyImage(EGL_DISPLAY(), mEGLImage);
mEGLImage = nullptr;
}
#endif
if (!mSurface)
return;
sEGLLibrary.fDestroySurface(EGL_DISPLAY(), mSurface);
mSurface = nullptr;
}
virtual bool CreateBackingSurface(const gfxIntSize& aSize)
{
ReleaseTexImage();
DestroyEGLSurface();
mBackingSurface = nullptr;
#ifdef MOZ_X11
Display* dpy = DefaultXDisplay();
XRenderPictFormat* renderFMT =
gfxXlibSurface::FindRenderFormat(dpy, mUpdateFormat);
nsRefPtr<gfxXlibSurface> xsurface =
gfxXlibSurface::Create(DefaultScreenOfDisplay(dpy),
renderFMT,
gfxIntSize(aSize.width, aSize.height));
XSync(dpy, False);
mConfig = nullptr;
if (sEGLLibrary.HasKHRImagePixmap() &&
mGLContext->IsExtensionSupported(GLContext::OES_EGL_image))
{
mEGLImage =
sEGLLibrary.fCreateImage(EGL_DISPLAY(),
EGL_NO_CONTEXT,
LOCAL_EGL_NATIVE_PIXMAP,
(EGLClientBuffer)xsurface->XDrawable(),
nullptr);
if (!mEGLImage) {
printf_stderr("couldn't create EGL image: ERROR (0x%04x)\n", sEGLLibrary.fGetError());
return false;
}
mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
mGLContext->fEGLImageTargetTexture2D(LOCAL_GL_TEXTURE_2D, mEGLImage);
sEGLLibrary.fDestroyImage(EGL_DISPLAY(), mEGLImage);
mEGLImage = nullptr;
} else {
if (!CreateEGLSurface(xsurface)) {
printf_stderr("ProviderEGL Failed create EGL surface: ERROR (0x%04x)\n", sEGLLibrary.fGetError());
return false;
}
if (!BindTexImage()) {
printf_stderr("ProviderEGL Failed to bind teximage: ERROR (0x%04x)\n", sEGLLibrary.fGetError());
return false;
}
}
mBackingSurface = xsurface;
return mBackingSurface != nullptr;
#endif
#ifdef MOZ_WIDGET_GONK
if (gUseBackingSurface && aSize.width >= 64) {
mGLContext->MakeCurrent(true);
PixelFormat format = PixelFormatForImage(mUpdateFormat);
uint32_t usage = GraphicBuffer::USAGE_HW_TEXTURE |
GraphicBuffer::USAGE_SW_READ_OFTEN |
GraphicBuffer::USAGE_SW_WRITE_OFTEN;
mGraphicBuffer = new GraphicBuffer(aSize.width, aSize.height, format, usage);
if (mGraphicBuffer->initCheck() == OK) {
const int eglImageAttributes[] = { LOCAL_EGL_IMAGE_PRESERVED, LOCAL_EGL_TRUE,
LOCAL_EGL_NONE, LOCAL_EGL_NONE };
mEGLImage = sEGLLibrary.fCreateImage(EGL_DISPLAY(),
EGL_NO_CONTEXT,
LOCAL_EGL_NATIVE_BUFFER_ANDROID,
(EGLClientBuffer) mGraphicBuffer->getNativeBuffer(),
eglImageAttributes);
if (!mEGLImage) {
mGraphicBuffer = nullptr;
LOG("Could not create EGL images: ERROR (0x%04x)", sEGLLibrary.fGetError());
return false;
}
return true;
}
mGraphicBuffer = nullptr;
LOG("GraphicBufferAllocator::alloc failed");
return false;
}
#endif
return mBackingSurface != nullptr;
}
protected:
typedef gfxASurface::gfxImageFormat ImageFormat;
GLContext* mGLContext;
nsIntRect mUpdateRect;
ImageFormat mUpdateFormat;
bool mUsingDirectTexture;
nsRefPtr<gfxASurface> mBackingSurface;
nsRefPtr<gfxASurface> mUpdateSurface;
#ifdef MOZ_WIDGET_GONK
sp<GraphicBuffer> mGraphicBuffer;
#endif
EGLImage mEGLImage;
GLuint mTexture;
EGLSurface mSurface;
EGLConfig mConfig;
TextureState mTextureState;
bool mBound;
bool mIsLocked;
virtual void ApplyFilter()
{
mGLContext->ApplyFilterToBoundTexture(mFilter);
}
};
#ifdef MOZ_WIDGET_GONK
class DirectTextureImageEGL
: public TextureImageEGL
{
public:
DirectTextureImageEGL(GLuint aTexture,
sp<GraphicBuffer> aGraphicBuffer,
GLenum aWrapMode,
GLContext* aContext)
: TextureImageEGL(aTexture,
nsIntSize(aGraphicBuffer->getWidth(), aGraphicBuffer->getHeight()),
aWrapMode,
ContentTypeForPixelFormat(aGraphicBuffer->getPixelFormat()),
aContext,
ForceSingleTile,
Valid)
{
mGraphicBuffer = aGraphicBuffer;
const int eglImageAttributes[] =
{ LOCAL_EGL_IMAGE_PRESERVED, LOCAL_EGL_TRUE,
LOCAL_EGL_NONE, LOCAL_EGL_NONE };
mEGLImage = sEGLLibrary.fCreateImage(EGL_DISPLAY(),
EGL_NO_CONTEXT,
LOCAL_EGL_NATIVE_BUFFER_ANDROID,
mGraphicBuffer->getNativeBuffer(),
eglImageAttributes);
if (!mEGLImage) {
LOG("Could not create EGL images: ERROR (0x%04x)", sEGLLibrary.fGetError());
}
}
};
#endif // MOZ_WIDGET_GONK
already_AddRefed<TextureImage>
GLContextEGL::CreateTextureImage(const nsIntSize& aSize,
TextureImage::ContentType aContentType,
GLenum aWrapMode,
TextureImage::Flags aFlags)
{
nsRefPtr<TextureImage> t = new gl::TiledTextureImage(this, aSize, aContentType, aFlags);
return t.forget();
}
#ifdef MOZ_WIDGET_GONK
already_AddRefed<TextureImage>
GLContextEGL::CreateDirectTextureImage(GraphicBuffer* aBuffer,
GLenum aWrapMode)
{
MakeCurrent();
GLuint texture;
fGenTextures(1, &texture);
nsRefPtr<TextureImage> texImage(
new DirectTextureImageEGL(texture, aBuffer, aWrapMode, this));
texImage->BindTexture(LOCAL_GL_TEXTURE0);
GLint texfilter = LOCAL_GL_LINEAR;
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER, texfilter);
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER, texfilter);
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_S, aWrapMode);
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_T, aWrapMode);
return texImage.forget();
}
#endif // MOZ_WIDGET_GONK
already_AddRefed<TextureImage>
GLContextEGL::TileGenFunc(const nsIntSize& aSize,
TextureImage::ContentType aContentType,
TextureImage::Flags aFlags)
{
MakeCurrent();
GLuint texture;
fGenTextures(1, &texture);
nsRefPtr<TextureImageEGL> teximage =
new TextureImageEGL(texture, aSize, LOCAL_GL_CLAMP_TO_EDGE, aContentType, this, aFlags);
teximage->BindTexture(LOCAL_GL_TEXTURE0);
GLint texfilter = aFlags & TextureImage::UseNearestFilter ? LOCAL_GL_NEAREST : LOCAL_GL_LINEAR;
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER, texfilter);
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER, texfilter);
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE);
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE);
return teximage.forget();
}
static nsRefPtr<GLContext> gGlobalContext;
static const EGLint kEGLConfigAttribsOffscreenPBuffer[] = {
LOCAL_EGL_SURFACE_TYPE, LOCAL_EGL_PBUFFER_BIT,
LOCAL_EGL_RENDERABLE_TYPE, LOCAL_EGL_OPENGL_ES2_BIT,
LOCAL_EGL_NONE
};
static const EGLint kEGLConfigAttribsRGB16[] = {
LOCAL_EGL_SURFACE_TYPE, LOCAL_EGL_WINDOW_BIT,
LOCAL_EGL_RENDERABLE_TYPE, LOCAL_EGL_OPENGL_ES2_BIT,
LOCAL_EGL_RED_SIZE, 5,
LOCAL_EGL_GREEN_SIZE, 6,
LOCAL_EGL_BLUE_SIZE, 5,
LOCAL_EGL_ALPHA_SIZE, 0,
LOCAL_EGL_NONE
};
static const EGLint kEGLConfigAttribsRGB24[] = {
LOCAL_EGL_SURFACE_TYPE, LOCAL_EGL_WINDOW_BIT,
LOCAL_EGL_RENDERABLE_TYPE, LOCAL_EGL_OPENGL_ES2_BIT,
LOCAL_EGL_RED_SIZE, 8,
LOCAL_EGL_GREEN_SIZE, 8,
LOCAL_EGL_BLUE_SIZE, 8,
LOCAL_EGL_ALPHA_SIZE, 0,
LOCAL_EGL_NONE
};
static const EGLint kEGLConfigAttribsRGBA32[] = {
LOCAL_EGL_SURFACE_TYPE, LOCAL_EGL_WINDOW_BIT,
LOCAL_EGL_RENDERABLE_TYPE, LOCAL_EGL_OPENGL_ES2_BIT,
LOCAL_EGL_RED_SIZE, 8,
LOCAL_EGL_GREEN_SIZE, 8,
LOCAL_EGL_BLUE_SIZE, 8,
LOCAL_EGL_ALPHA_SIZE, 8,
LOCAL_EGL_NONE
};
static bool
CreateConfig(EGLConfig* aConfig, int32_t depth)
{
EGLConfig configs[64];
const EGLint* attribs;
EGLint ncfg = ArrayLength(configs);
switch (depth) {
case 16:
attribs = kEGLConfigAttribsRGB16;
break;
case 24:
attribs = kEGLConfigAttribsRGB24;
break;
case 32:
attribs = kEGLConfigAttribsRGBA32;
break;
default:
NS_ERROR("Unknown pixel depth");
return false;
}
if (!sEGLLibrary.fChooseConfig(EGL_DISPLAY(), attribs,
configs, ncfg, &ncfg) ||
ncfg < 1) {
return false;
}
for (int j = 0; j < ncfg; ++j) {
EGLConfig config = configs[j];
EGLint r, g, b, a;
if (sEGLLibrary.fGetConfigAttrib(EGL_DISPLAY(), config,
LOCAL_EGL_RED_SIZE, &r) &&
sEGLLibrary.fGetConfigAttrib(EGL_DISPLAY(), config,
LOCAL_EGL_GREEN_SIZE, &g) &&
sEGLLibrary.fGetConfigAttrib(EGL_DISPLAY(), config,
LOCAL_EGL_BLUE_SIZE, &b) &&
sEGLLibrary.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)))
{
*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
CreateConfig(EGLConfig* aConfig)
{
int32_t depth = gfxPlatform::GetPlatform()->GetScreenDepth();
if (!CreateConfig(aConfig, depth)) {
#ifdef MOZ_WIDGET_ANDROID
// Bug 736005
// Android doesn't always support 16 bit so also try 24 bit
if (depth == 16) {
return CreateConfig(aConfig, 24);
}
#endif
return false;
} else {
return true;
}
}
// When MOZ_ANDROID_OMTC is defined,
// use mozilla::AndroidBridge::Bridge()->ProvideEGLSurface() instead.
#ifndef MOZ_ANDROID_OMTC
static EGLSurface
CreateSurfaceForWindow(nsIWidget *aWidget, EGLConfig config)
{
EGLSurface surface;
#ifdef DEBUG
sEGLLibrary.DumpEGLConfig(config);
#endif
#if !defined(MOZ_WIDGET_ANDROID)
surface = sEGLLibrary.fCreateWindowSurface(EGL_DISPLAY(), config, GET_NATIVE_WINDOW(aWidget), 0);
#endif
#ifdef MOZ_WIDGET_GONK
gScreenBounds.x = 0;
gScreenBounds.y = 0;
sEGLLibrary.fQuerySurface(EGL_DISPLAY(), surface, LOCAL_EGL_WIDTH, &gScreenBounds.width);
sEGLLibrary.fQuerySurface(EGL_DISPLAY(), surface, LOCAL_EGL_HEIGHT, &gScreenBounds.height);
#endif
return surface;
}
#endif
already_AddRefed<GLContext>
GLContextProviderEGL::CreateForWindow(nsIWidget *aWidget)
{
if (!sEGLLibrary.EnsureInitialized()) {
return nullptr;
}
bool doubleBuffered = true;
bool hasNativeContext = aWidget->HasGLContext();
EGLContext eglContext = sEGLLibrary.fGetCurrentContext();
if (hasNativeContext && eglContext) {
void* platformContext = eglContext;
SurfaceCaps caps = SurfaceCaps::Any();
#ifdef MOZ_WIDGET_QT
int depth = gfxPlatform::GetPlatform()->GetScreenDepth();
QGLContext* context = const_cast<QGLContext*>(QGLContext::currentContext());
if (context && context->device()) {
depth = context->device()->depth();
}
const QGLFormat& format = context->format();
doubleBuffered = format.doubleBuffer();
platformContext = context;
caps.bpp16 = depth == 16 ? true : false;
caps.alpha = format.rgba();
caps.depth = format.depth();
caps.stencil = format.stencil();
#endif
EGLConfig config = EGL_NO_CONFIG;
EGLSurface surface = sEGLLibrary.fGetCurrentSurface(LOCAL_EGL_DRAW);
nsRefPtr<GLContextEGL> glContext =
new GLContextEGL(caps,
gGlobalContext, false,
config, surface, eglContext);
if (!glContext->Init())
return nullptr;
glContext->MakeCurrent();
glContext->SetIsDoubleBuffered(doubleBuffered);
glContext->SetPlatformContext(platformContext);
if (!gGlobalContext) {
gGlobalContext = glContext;
}
return glContext.forget();
}
EGLConfig config;
if (!CreateConfig(&config)) {
printf_stderr("Failed to create EGL config!\n");
return nullptr;
}
#ifdef MOZ_ANDROID_OMTC
mozilla::AndroidBridge::Bridge()->RegisterCompositor();
EGLSurface surface = mozilla::AndroidBridge::Bridge()->ProvideEGLSurface();
#else
EGLSurface surface = CreateSurfaceForWindow(aWidget, config);
#endif
if (!surface) {
printf_stderr("Failed to create EGLSurface!\n");
return nullptr;
}
GLContextEGL* shareContext = GetGlobalContextEGL();
SurfaceCaps caps = SurfaceCaps::Any();
nsRefPtr<GLContextEGL> glContext =
GLContextEGL::CreateGLContext(caps,
shareContext, false,
config, surface);
if (!glContext) {
sEGLLibrary.fDestroySurface(EGL_DISPLAY(), surface);
return nullptr;
}
glContext->MakeCurrent();
glContext->SetIsDoubleBuffered(doubleBuffered);
return glContext.forget();
}
already_AddRefed<GLContextEGL>
GLContextEGL::CreateEGLPBufferOffscreenContext(const gfxIntSize& size)
{
EGLConfig config;
EGLSurface surface;
const EGLint numConfigs = 1; // We only need one.
EGLConfig configs[numConfigs];
EGLint foundConfigs = 0;
if (!sEGLLibrary.fChooseConfig(EGL_DISPLAY(),
kEGLConfigAttribsOffscreenPBuffer,
configs, numConfigs,
&foundConfigs)
|| foundConfigs == 0)
{
NS_WARNING("No EGL Config for minimal PBuffer!");
return nullptr;
}
// We absolutely don't care, so just pick the first one.
config = configs[0];
if (GLContext::DebugMode())
sEGLLibrary.DumpEGLConfig(config);
gfxIntSize pbSize(size);
surface = GLContextEGL::CreatePBufferSurfaceTryingPowerOfTwo(config,
LOCAL_EGL_NONE,
pbSize);
if (!surface) {
NS_WARNING("Failed to create PBuffer for context!");
return nullptr;
}
GLContextEGL* shareContext = GetGlobalContextEGL();
SurfaceCaps dummyCaps = SurfaceCaps::Any();
nsRefPtr<GLContextEGL> glContext =
GLContextEGL::CreateGLContext(dummyCaps,
shareContext, true,
config, surface);
if (!glContext) {
NS_WARNING("Failed to create GLContext from PBuffer");
sEGLLibrary.fDestroySurface(EGL_DISPLAY(), surface);
return nullptr;
}
if (!glContext->Init()) {
NS_WARNING("Failed to initialize GLContext!");
// GLContextEGL::dtor will destroy |surface| for us.
return nullptr;
}
return glContext.forget();
}
#ifdef MOZ_X11
EGLSurface
CreateEGLSurfaceForXSurface(gfxASurface* aSurface, EGLConfig* aConfig)
{
gfxXlibSurface* xsurface = static_cast<gfxXlibSurface*>(aSurface);
bool opaque =
aSurface->GetContentType() == gfxASurface::CONTENT_COLOR;
static EGLint pixmap_config_rgb[] = {
LOCAL_EGL_TEXTURE_TARGET, LOCAL_EGL_TEXTURE_2D,
LOCAL_EGL_TEXTURE_FORMAT, LOCAL_EGL_TEXTURE_RGB,
LOCAL_EGL_NONE
};
static EGLint pixmap_config_rgba[] = {
LOCAL_EGL_TEXTURE_TARGET, LOCAL_EGL_TEXTURE_2D,
LOCAL_EGL_TEXTURE_FORMAT, LOCAL_EGL_TEXTURE_RGBA,
LOCAL_EGL_NONE
};
EGLSurface surface = nullptr;
if (aConfig && *aConfig) {
if (opaque)
surface = sEGLLibrary.fCreatePixmapSurface(EGL_DISPLAY(), *aConfig,
(EGLNativePixmapType)xsurface->XDrawable(),
pixmap_config_rgb);
else
surface = sEGLLibrary.fCreatePixmapSurface(EGL_DISPLAY(), *aConfig,
(EGLNativePixmapType)xsurface->XDrawable(),
pixmap_config_rgba);
if (surface != EGL_NO_SURFACE)
return surface;
}
EGLConfig configs[32];
int numConfigs = 32;
static EGLint pixmap_config[] = {
LOCAL_EGL_SURFACE_TYPE, LOCAL_EGL_PIXMAP_BIT,
LOCAL_EGL_RENDERABLE_TYPE, LOCAL_EGL_OPENGL_ES2_BIT,
LOCAL_EGL_DEPTH_SIZE, 0,
LOCAL_EGL_BIND_TO_TEXTURE_RGB, LOCAL_EGL_TRUE,
LOCAL_EGL_NONE
};
static EGLint pixmap_lock_config[] = {
LOCAL_EGL_SURFACE_TYPE, LOCAL_EGL_PIXMAP_BIT | LOCAL_EGL_LOCK_SURFACE_BIT_KHR,
LOCAL_EGL_RENDERABLE_TYPE, LOCAL_EGL_OPENGL_ES2_BIT,
LOCAL_EGL_DEPTH_SIZE, 0,
LOCAL_EGL_BIND_TO_TEXTURE_RGB, LOCAL_EGL_TRUE,
LOCAL_EGL_NONE
};
if (!sEGLLibrary.fChooseConfig(EGL_DISPLAY(),
sEGLLibrary.HasKHRLockSurface() ?
pixmap_lock_config : pixmap_config,
configs, numConfigs, &numConfigs)
|| numConfigs == 0)
{
NS_WARNING("No EGL Config for pixmap!");
return nullptr;
}
int i = 0;
for (i = 0; i < numConfigs; ++i) {
if (opaque)
surface = sEGLLibrary.fCreatePixmapSurface(EGL_DISPLAY(), configs[i],
(EGLNativePixmapType)xsurface->XDrawable(),
pixmap_config_rgb);
else
surface = sEGLLibrary.fCreatePixmapSurface(EGL_DISPLAY(), configs[i],
(EGLNativePixmapType)xsurface->XDrawable(),
pixmap_config_rgba);
if (surface != EGL_NO_SURFACE)
break;
}
if (!surface) {
NS_WARNING("Failed to CreatePixmapSurface!");
return nullptr;
}
if (aConfig)
*aConfig = configs[i];
return surface;
}
#endif
already_AddRefed<GLContextEGL>
GLContextEGL::CreateEGLPixmapOffscreenContext(const gfxIntSize& size)
{
gfxASurface *thebesSurface = nullptr;
EGLNativePixmapType pixmap = 0;
#ifdef MOZ_X11
nsRefPtr<gfxXlibSurface> xsurface =
gfxXlibSurface::Create(DefaultScreenOfDisplay(DefaultXDisplay()),
gfxXlibSurface::FindRenderFormat(DefaultXDisplay(),
gfxASurface::ImageFormatRGB24),
size);
// XSync required after gfxXlibSurface::Create, otherwise EGL will fail with BadDrawable error
XSync(DefaultXDisplay(), False);
if (xsurface->CairoStatus() != 0)
return nullptr;
thebesSurface = xsurface;
pixmap = (EGLNativePixmapType)xsurface->XDrawable();
#endif
if (!pixmap) {
return nullptr;
}
EGLSurface surface = 0;
EGLConfig config = 0;
#ifdef MOZ_X11
surface = CreateEGLSurfaceForXSurface(thebesSurface, &config);
#endif
if (!config) {
return nullptr;
}
MOZ_ASSERT(surface);
GLContextEGL* shareContext = GetGlobalContextEGL();
SurfaceCaps dummyCaps = SurfaceCaps::Any();
nsRefPtr<GLContextEGL> glContext =
GLContextEGL::CreateGLContext(dummyCaps,
shareContext, true,
config, surface);
if (!glContext) {
NS_WARNING("Failed to create GLContext from XSurface");
sEGLLibrary.fDestroySurface(EGL_DISPLAY(), surface);
return nullptr;
}
if (!glContext->Init()) {
NS_WARNING("Failed to initialize GLContext!");
// GLContextEGL::dtor will destroy |surface| for us.
return nullptr;
}
glContext->HoldSurface(thebesSurface);
return glContext.forget();
}
// Under EGL, if we're under X11, then we have to create a Pixmap
// because Maemo's EGL implementation doesn't support pbuffers at all
// for some reason. On Android, pbuffers are supported fine, though
// often without the ability to texture from them directly.
already_AddRefed<GLContext>
GLContextProviderEGL::CreateOffscreen(const gfxIntSize& size,
const SurfaceCaps& caps,
ContextFlags flags)
{
if (!sEGLLibrary.EnsureInitialized()) {
return nullptr;
}
gfxIntSize dummySize = gfxIntSize(16, 16);
nsRefPtr<GLContextEGL> glContext;
#if defined(MOZ_X11)
glContext = GLContextEGL::CreateEGLPixmapOffscreenContext(dummySize);
#else
glContext = GLContextEGL::CreateEGLPBufferOffscreenContext(dummySize);
#endif
if (!glContext)
return nullptr;
if (flags & GLContext::ContextFlagsGlobal)
return glContext.forget();
if (!glContext->InitOffscreen(size, caps))
return nullptr;
return glContext.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)
GLContext *
GLContextProviderEGL::GetGlobalContext(const ContextFlags)
{
return nullptr;
}
void
GLContextProviderEGL::Shutdown()
{
gGlobalContext = nullptr;
}
} /* namespace gl */
} /* namespace mozilla */
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