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gecko/gfx/thebes/GLContextProviderEGL.cpp
Jeff Muizelaar feb59ecd24 Bug 614832. Refactor EGL surface creation. r=vlad,a=blocking 
This factors CreateSurfaceForWindow() out of CreateForWindow() so that we can
reuse it in RenewSurface(). For this to work we also need to factor out
CreateConfig(). The QT implementation is also pulled out because it didn't
share any code.
2010-12-13 14:36:35 -08:00

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Mozilla Corporation.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Vladimir Vukicevic <vladimir@pobox.com>
* Mark Steele <mwsteele@gmail.com>
* Bas Schouten <bschouten@mozilla.com>
* Frederic Plourde <frederic.plourde@collabora.co.uk>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#if defined(MOZ_X11)
#ifdef MOZ_WIDGET_GTK2
#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 <QWidget>
#include <QtOpenGL/QGLWidget>
#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))->handle()
#endif
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include "mozilla/X11Util.h"
#include "gfxXlibSurface.h"
typedef Display *EGLNativeDisplayType;
typedef Pixmap EGLNativePixmapType;
typedef Window EGLNativeWindowType;
#define EGL_LIB "/usr/lib/libEGL.so"
#define GLES2_LIB "/usr/lib/libGLESv2.so"
#elif defined(ANDROID)
/* from widget */
#include "AndroidBridge.h"
typedef void *EGLNativeDisplayType;
typedef void *EGLNativePixmapType;
typedef void *EGLNativeWindowType;
#define EGL_LIB "/system/lib/libEGL.so"
#define GLES2_LIB "/system/lib/libGLESv2.so"
#elif defined(XP_WIN)
#include "nsServiceManagerUtils.h"
#include "nsIPrefBranch.h"
#include "nsILocalFile.h"
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN 1
#endif
#include <windows.h>
typedef HDC EGLNativeDisplayType;
typedef HBITMAP EGLNativePixmapType;
typedef HWND EGLNativeWindowType;
#define GET_NATIVE_WINDOW(aWidget) ((EGLNativeWindowType)aWidget->GetNativeData(NS_NATIVE_WINDOW))
#define EGL_LIB "libEGL.dll"
#define GLES2_LIB "libGLESv2.dll"
// 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 "gfxASurface.h"
#include "gfxImageSurface.h"
#include "gfxPlatform.h"
#include "GLContextProvider.h"
#include "nsDebug.h"
#include "nsThreadUtils.h"
#include "nsIWidget.h"
static bool gUseBackingSurface = false;
namespace mozilla {
namespace gl {
typedef int EGLint;
typedef unsigned int EGLBoolean;
typedef unsigned int EGLenum;
typedef void *EGLConfig;
typedef void *EGLContext;
typedef void *EGLDisplay;
typedef void *EGLSurface;
typedef void *EGLClientBuffer;
typedef void *EGLCastToRelevantPtr;
typedef void *EGLImageKHR;
typedef void *GLeglImageOES;
#define EGL_DEFAULT_DISPLAY ((EGLNativeDisplayType)0)
#define EGL_NO_CONTEXT ((EGLContext)0)
#define EGL_NO_DISPLAY ((EGLDisplay)0)
#define EGL_NO_SURFACE ((EGLSurface)0)
#define EGL_DISPLAY() sEGLLibrary.Display()
EGLSurface
CreateSurfaceForWindow(nsIWidget *aWidget, EGLConfig config);
EGLConfig
CreateConfig();
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 class EGLLibrary
{
public:
EGLLibrary()
: mInitialized(PR_FALSE),
mEGLLibrary(nsnull)
{
mHave_EGL_KHR_image_base = PR_FALSE;
mHave_EGL_KHR_image_pixmap = PR_FALSE;
mHave_EGL_KHR_gl_texture_2D_image = PR_FALSE;
mHave_EGL_KHR_lock_surface = PR_FALSE;
}
typedef EGLDisplay (GLAPIENTRY * pfnGetDisplay)(void *display_id);
pfnGetDisplay fGetDisplay;
typedef EGLContext (GLAPIENTRY * pfnGetCurrentContext)(void);
pfnGetCurrentContext fGetCurrentContext;
typedef EGLBoolean (GLAPIENTRY * pfnMakeCurrent)(EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext ctx);
pfnMakeCurrent fMakeCurrent;
typedef EGLBoolean (GLAPIENTRY * pfnDestroyContext)(EGLDisplay dpy, EGLContext ctx);
pfnDestroyContext fDestroyContext;
typedef EGLContext (GLAPIENTRY * pfnCreateContext)(EGLDisplay dpy, EGLConfig config, EGLContext share_context, const EGLint *attrib_list);
pfnCreateContext fCreateContext;
typedef EGLBoolean (GLAPIENTRY * pfnDestroySurface)(EGLDisplay dpy, EGLSurface surface);
pfnDestroySurface fDestroySurface;
typedef EGLSurface (GLAPIENTRY * pfnCreateWindowSurface)(EGLDisplay dpy, EGLConfig config, EGLNativeWindowType win, const EGLint *attrib_list);
pfnCreateWindowSurface fCreateWindowSurface;
typedef EGLSurface (GLAPIENTRY * pfnCreatePbufferSurface)(EGLDisplay dpy, EGLConfig config, const EGLint *attrib_list);
pfnCreatePbufferSurface fCreatePbufferSurface;
typedef EGLSurface (GLAPIENTRY * pfnCreatePixmapSurface)(EGLDisplay dpy, EGLConfig config, EGLNativePixmapType pixmap, const EGLint *attrib_list);
pfnCreatePixmapSurface fCreatePixmapSurface;
typedef EGLBoolean (GLAPIENTRY * pfnBindAPI)(EGLenum api);
pfnBindAPI fBindAPI;
typedef EGLBoolean (GLAPIENTRY * pfnInitialize)(EGLDisplay dpy, EGLint *major, EGLint *minor);
pfnInitialize fInitialize;
typedef EGLBoolean (GLAPIENTRY * pfnChooseConfig)(EGLDisplay dpy, const EGLint *attrib_list, EGLConfig *configs, EGLint config_size, EGLint *num_config);
pfnChooseConfig fChooseConfig;
typedef EGLint (GLAPIENTRY * pfnGetError)(void);
pfnGetError fGetError;
typedef EGLBoolean (GLAPIENTRY * pfnGetConfigAttrib)(EGLDisplay dpy, EGLConfig config, EGLint attribute, EGLint *value);
pfnGetConfigAttrib fGetConfigAttrib;
typedef EGLBoolean (GLAPIENTRY * pfnGetConfigs)(EGLDisplay dpy, EGLConfig *configs, EGLint config_size, EGLint *num_config);
pfnGetConfigs fGetConfigs;
typedef EGLBoolean (GLAPIENTRY * pfnWaitNative)(EGLint engine);
pfnWaitNative fWaitNative;
typedef EGLCastToRelevantPtr (GLAPIENTRY * pfnGetProcAddress)(const char *procname);
pfnGetProcAddress fGetProcAddress;
typedef EGLBoolean (GLAPIENTRY * pfnSwapBuffers)(EGLDisplay dpy, EGLSurface surface);
pfnSwapBuffers fSwapBuffers;
typedef EGLBoolean (GLAPIENTRY * pfnCopyBuffers)(EGLDisplay dpy, EGLSurface surface,
EGLNativePixmapType target);
pfnCopyBuffers fCopyBuffers;
typedef const GLubyte* (GLAPIENTRY * pfnQueryString)(EGLDisplay, EGLint name);
pfnQueryString fQueryString;
typedef EGLBoolean (GLAPIENTRY * pfnQueryContext)(EGLDisplay dpy, EGLContext ctx,
EGLint attribute, EGLint *value);
pfnQueryContext fQueryContext;
typedef EGLBoolean (GLAPIENTRY * pfnBindTexImage)(EGLDisplay, EGLSurface surface, EGLint buffer);
pfnBindTexImage fBindTexImage;
typedef EGLBoolean (GLAPIENTRY * pfnReleaseTexImage)(EGLDisplay, EGLSurface surface, EGLint buffer);
pfnReleaseTexImage fReleaseTexImage;
typedef EGLImageKHR (GLAPIENTRY * pfnCreateImageKHR)(EGLDisplay dpy, EGLContext ctx, EGLenum target, EGLClientBuffer buffer, const EGLint *attrib_list);
pfnCreateImageKHR fCreateImageKHR;
typedef EGLBoolean (GLAPIENTRY * pfnDestroyImageKHR)(EGLDisplay dpy, EGLImageKHR image);
pfnDestroyImageKHR fDestroyImageKHR;
// New extension which allow us to lock texture and get raw image pointer
typedef EGLBoolean (GLAPIENTRY * pfnLockSurfaceKHR)(EGLDisplay dpy, EGLSurface surface, const EGLint *attrib_list);
pfnLockSurfaceKHR fLockSurfaceKHR;
typedef EGLBoolean (GLAPIENTRY * pfnUnlockSurfaceKHR)(EGLDisplay dpy, EGLSurface surface);
pfnUnlockSurfaceKHR fUnlockSurfaceKHR;
typedef EGLBoolean (GLAPIENTRY * pfnQuerySurface)(EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint *value);
pfnQuerySurface fQuerySurface;
// This is EGL specific GL ext symbol "glEGLImageTargetTexture2DOES"
// Lets keep it here for now.
typedef void (GLAPIENTRY * pfnImageTargetTexture2DOES)(GLenum target, GLeglImageOES image);
pfnImageTargetTexture2DOES fImageTargetTexture2DOES;
PRBool EnsureInitialized()
{
if (mInitialized) {
return PR_TRUE;
}
#ifdef XP_WIN
// Allow for explicitly specifying the location of libEGL.dll and
// libGLESv2.dll.
do {
nsCOMPtr<nsIPrefBranch> prefs = do_GetService("@mozilla.org/preferences-service;1");
nsCOMPtr<nsILocalFile> eglFile, glesv2File;
if (!prefs)
break;
nsresult rv = prefs->GetComplexValue("gfx.angle.egl.path",
NS_GET_IID(nsILocalFile),
getter_AddRefs(eglFile));
if (NS_FAILED(rv) || !eglFile)
break;
nsCAutoString s;
// note that we have to load the libs in this order, because libEGL.dll
// depends on libGLESv2.dll, but is not/may not be in our search path.
nsCOMPtr<nsIFile> f;
eglFile->Clone(getter_AddRefs(f));
glesv2File = do_QueryInterface(f);
if (!glesv2File)
break;
glesv2File->Append(NS_LITERAL_STRING("libGLESv2.dll"));
PRLibrary *glesv2lib = nsnull; // this will be leaked on purpose
glesv2File->Load(&glesv2lib);
if (!glesv2lib)
break;
eglFile->Append(NS_LITERAL_STRING("libEGL.dll"));
eglFile->Load(&mEGLLibrary);
} while (false);
#endif
if (!mEGLLibrary) {
mEGLLibrary = PR_LoadLibrary(EGL_LIB);
}
if (!mEGLLibrary) {
NS_WARNING("Couldn't load EGL LIB.");
return PR_FALSE;
}
#define SYMBOL(name) \
{ (PRFuncPtr*) &f##name, { "egl" #name, NULL } }
LibrarySymbolLoader::SymLoadStruct earlySymbols[] = {
SYMBOL(GetDisplay),
SYMBOL(GetCurrentContext),
SYMBOL(MakeCurrent),
SYMBOL(DestroyContext),
SYMBOL(CreateContext),
SYMBOL(DestroySurface),
SYMBOL(CreateWindowSurface),
SYMBOL(CreatePbufferSurface),
SYMBOL(CreatePixmapSurface),
SYMBOL(BindAPI),
SYMBOL(Initialize),
SYMBOL(ChooseConfig),
SYMBOL(GetError),
SYMBOL(GetConfigs),
SYMBOL(GetConfigAttrib),
SYMBOL(WaitNative),
SYMBOL(GetProcAddress),
SYMBOL(SwapBuffers),
SYMBOL(CopyBuffers),
SYMBOL(QueryString),
SYMBOL(QueryContext),
SYMBOL(BindTexImage),
SYMBOL(ReleaseTexImage),
SYMBOL(QuerySurface),
{ NULL, { NULL } }
};
if (!LibrarySymbolLoader::LoadSymbols(mEGLLibrary, &earlySymbols[0])) {
NS_WARNING("Couldn't find required entry points in EGL library (early init)");
return PR_FALSE;
}
mEGLDisplay = fGetDisplay(EGL_DEFAULT_DISPLAY);
if (!fInitialize(mEGLDisplay, NULL, NULL))
return PR_FALSE;
const char *extensions = (const char*) fQueryString(mEGLDisplay, LOCAL_EGL_EXTENSIONS);
if (!extensions)
extensions = "";
printf_stderr("Extensions: %s 0x%02x\n", extensions, extensions[0]);
printf_stderr("Extensions length: %d\n", strlen(extensions));
// note the extra space -- this ugliness tries to match
// EGL_KHR_image in the middle of the string, or right at the
// end. It's a prefix for other extensions, so we have to do
// this...
PRBool hasKHRImage = PR_FALSE;
if (strstr(extensions, "EGL_KHR_image ") ||
(strlen(extensions) >= strlen("EGL_KHR_image") &&
strcmp(extensions+(strlen(extensions)-strlen("EGL_KHR_image")), "EGL_KHR_image")))
{
hasKHRImage = PR_TRUE;
}
if (strstr(extensions, "EGL_KHR_image_base")) {
mHave_EGL_KHR_image_base = PR_TRUE;
}
if (strstr(extensions, "EGL_KHR_image_pixmap")) {
mHave_EGL_KHR_image_pixmap = PR_TRUE;
}
if (strstr(extensions, "EGL_KHR_gl_texture_2D_image")) {
mHave_EGL_KHR_gl_texture_2D_image = PR_TRUE;
}
if (strstr(extensions, "EGL_KHR_lock_surface")) {
mHave_EGL_KHR_lock_surface = PR_TRUE;
}
if (hasKHRImage) {
mHave_EGL_KHR_image_base = PR_TRUE;
mHave_EGL_KHR_image_pixmap = PR_TRUE;
}
LibrarySymbolLoader::SymLoadStruct khrSymbols[] = {
{ (PRFuncPtr*) &fCreateImageKHR, { "eglCreateImageKHR", NULL } },
{ (PRFuncPtr*) &fDestroyImageKHR, { "eglDestroyImageKHR", NULL } },
{ (PRFuncPtr*) &fImageTargetTexture2DOES, { "glEGLImageTargetTexture2DOES", NULL } },
{ NULL, { NULL } }
};
LibrarySymbolLoader::LoadSymbols(mEGLLibrary, &khrSymbols[0],
(LibrarySymbolLoader::PlatformLookupFunction)fGetProcAddress);
if (mHave_EGL_KHR_lock_surface) {
LibrarySymbolLoader::SymLoadStruct lockSymbols[] = {
{ (PRFuncPtr*) &fLockSurfaceKHR, { "eglLockSurfaceKHR", NULL } },
{ (PRFuncPtr*) &fUnlockSurfaceKHR, { "eglUnlockSurfaceKHR", NULL } },
{ NULL, { NULL } }
};
LibrarySymbolLoader::LoadSymbols(mEGLLibrary, &lockSymbols[0],
(LibrarySymbolLoader::PlatformLookupFunction)fGetProcAddress);
if (!fLockSurfaceKHR) {
mHave_EGL_KHR_lock_surface = PR_FALSE;
}
}
if (!fCreateImageKHR) {
mHave_EGL_KHR_image_base = PR_FALSE;
mHave_EGL_KHR_image_pixmap = PR_FALSE;
mHave_EGL_KHR_gl_texture_2D_image = PR_FALSE;
}
if (!fImageTargetTexture2DOES) {
mHave_EGL_KHR_gl_texture_2D_image = PR_FALSE;
}
mInitialized = PR_TRUE;
return PR_TRUE;
}
EGLDisplay Display() {
return mEGLDisplay;
}
PRBool HasKHRImageBase() {
return mHave_EGL_KHR_image_base;
}
PRBool HasKHRImagePixmap() {
return mHave_EGL_KHR_image_base;
}
PRBool HasKHRImageTexture2D() {
return mHave_EGL_KHR_gl_texture_2D_image;
}
PRBool HasKHRLockSurface() {
return mHave_EGL_KHR_lock_surface;
}
void
DumpEGLConfig(EGLConfig cfg)
{
int attrval;
int err;
#define ATTR(_x) do { \
fGetConfigAttrib(mEGLDisplay, cfg, LOCAL_EGL_##_x, &attrval); \
if ((err = fGetError()) != 0x3000) { \
printf_stderr(" %s: ERROR (0x%04x)\n", #_x, err); \
} else { \
printf_stderr(" %s: %d (0x%04x)\n", #_x, attrval, attrval); \
} \
} while(0)
printf_stderr("EGL Config: %d [%p]\n", (int)(intptr_t)cfg, cfg);
ATTR(BUFFER_SIZE);
ATTR(ALPHA_SIZE);
ATTR(BLUE_SIZE);
ATTR(GREEN_SIZE);
ATTR(RED_SIZE);
ATTR(DEPTH_SIZE);
ATTR(STENCIL_SIZE);
ATTR(CONFIG_CAVEAT);
ATTR(CONFIG_ID);
ATTR(LEVEL);
ATTR(MAX_PBUFFER_HEIGHT);
ATTR(MAX_PBUFFER_PIXELS);
ATTR(MAX_PBUFFER_WIDTH);
ATTR(NATIVE_RENDERABLE);
ATTR(NATIVE_VISUAL_ID);
ATTR(NATIVE_VISUAL_TYPE);
ATTR(PRESERVED_RESOURCES);
ATTR(SAMPLES);
ATTR(SAMPLE_BUFFERS);
ATTR(SURFACE_TYPE);
ATTR(TRANSPARENT_TYPE);
ATTR(TRANSPARENT_RED_VALUE);
ATTR(TRANSPARENT_GREEN_VALUE);
ATTR(TRANSPARENT_BLUE_VALUE);
ATTR(BIND_TO_TEXTURE_RGB);
ATTR(BIND_TO_TEXTURE_RGBA);
ATTR(MIN_SWAP_INTERVAL);
ATTR(MAX_SWAP_INTERVAL);
ATTR(LUMINANCE_SIZE);
ATTR(ALPHA_MASK_SIZE);
ATTR(COLOR_BUFFER_TYPE);
ATTR(RENDERABLE_TYPE);
ATTR(CONFORMANT);
#undef ATTR
}
private:
PRBool mInitialized;
PRLibrary *mEGLLibrary;
EGLDisplay mEGLDisplay;
PRPackedBool mHave_EGL_KHR_image_base;
PRPackedBool mHave_EGL_KHR_image_pixmap;
PRPackedBool mHave_EGL_KHR_gl_texture_2D_image;
PRPackedBool mHave_EGL_KHR_lock_surface;
} sEGLLibrary;
class GLContextEGL : public GLContext
{
friend class TextureImageEGL;
public:
GLContextEGL(const ContextFormat& aFormat,
GLContext *aShareContext,
EGLConfig aConfig,
EGLSurface aSurface,
EGLContext aContext,
PRBool aIsOffscreen = PR_FALSE)
: GLContext(aFormat, aIsOffscreen, aShareContext)
, mConfig(aConfig)
, mSurface(aSurface), mContext(aContext)
, mGLWidget(nsnull)
, mThebesSurface(nsnull)
, mBound(PR_FALSE)
, mIsPBuffer(PR_FALSE)
, mIsDoubleBuffered(PR_FALSE)
#ifdef XP_WIN
, mWnd(0)
#endif
{
// any EGL contexts will always be GLESv2
SetIsGLES2(PR_TRUE);
#ifdef DEBUG
printf_stderr("Initializing context %p surface %p on display %p\n", mContext, mSurface, EGL_DISPLAY());
#endif
}
~GLContextEGL()
{
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 (mGLWidget)
return;
#ifdef DEBUG
printf_stderr("Destroying context %p surface %p on display %p\n", mContext, mSurface, EGL_DISPLAY());
#endif
sEGLLibrary.fDestroyContext(EGL_DISPLAY(), mContext);
sEGLLibrary.fDestroySurface(EGL_DISPLAY(), mSurface);
}
GLContextType GetContextType() {
return ContextTypeEGL;
}
PRBool Init()
{
if (!OpenLibrary(GLES2_LIB)) {
NS_WARNING("Couldn't load EGL LIB.");
return PR_FALSE;
}
MakeCurrent();
PRBool ok = InitWithPrefix("gl", PR_TRUE);
#if 0
if (ok) {
EGLint v;
sEGLLibrary.fQueryContext(EGL_DISPLAY(), mContext, LOCAL_EGL_RENDER_BUFFER, &v);
if (v == LOCAL_EGL_BACK_BUFFER)
mIsDoubleBuffered = PR_TRUE;
}
#endif
return ok;
}
PRBool IsDoubleBuffered() {
return mIsDoubleBuffered;
}
void SetIsDoubleBuffered(PRBool aIsDB) {
mIsDoubleBuffered = aIsDB;
}
PRBool BindTexImage()
{
if (!mSurface)
return PR_FALSE;
if (mBound && !ReleaseTexImage())
return PR_FALSE;
EGLBoolean success = sEGLLibrary.fBindTexImage(EGL_DISPLAY(),
(EGLSurface)mSurface, LOCAL_EGL_BACK_BUFFER);
if (success == LOCAL_EGL_FALSE)
return PR_FALSE;
mBound = PR_TRUE;
return PR_TRUE;
}
PRBool ReleaseTexImage()
{
if (!mBound)
return PR_TRUE;
if (!mSurface)
return PR_FALSE;
EGLBoolean success;
success = sEGLLibrary.fReleaseTexImage(EGL_DISPLAY(),
(EGLSurface)mSurface,
LOCAL_EGL_BACK_BUFFER);
if (success == LOCAL_EGL_FALSE)
return PR_FALSE;
mBound = PR_FALSE;
return PR_TRUE;
}
PRBool MakeCurrentImpl(PRBool aForce = PR_FALSE) {
PRBool succeeded = PR_TRUE;
// Assume that EGL has the same problem as WGL does,
// where MakeCurrent with an already-current context is
// still expensive.
if (aForce || sEGLLibrary.fGetCurrentContext() != mContext) {
if (mGLWidget) {
#ifdef MOZ_WIDGET_QT
static_cast<QGLWidget*>(mGLWidget)->makeCurrent();
#else
succeeded = PR_FALSE;
#endif
} else {
succeeded = sEGLLibrary.fMakeCurrent(EGL_DISPLAY(),
mSurface, mSurface,
mContext);
}
NS_ASSERTION(succeeded, "Failed to make GL context current!");
}
return succeeded;
}
#ifdef MOZ_WIDGET_QT
virtual PRBool
RenewSurface() {
/* We don't support renewing on QT because we don't create the surface ourselves */
return PR_FALSE;
}
#else
virtual PRBool
RenewSurface() {
sEGLLibrary.fDestroySurface(EGL_DISPLAY(), mSurface);
EGLConfig config = CreateConfig();
mSurface = CreateSurfaceForWindow(NULL, config);
return sEGLLibrary.fMakeCurrent(EGL_DISPLAY(),
mSurface, mSurface,
mContext);
}
#endif
PRBool SetupLookupFunction()
{
mLookupFunc = (PlatformLookupFunction)sEGLLibrary.fGetProcAddress;
return PR_TRUE;
}
void *GetNativeData(NativeDataType aType)
{
switch (aType) {
case NativeGLContext:
return mContext;
default:
return nsnull;
}
}
PRBool SwapBuffers()
{
return sEGLLibrary.fSwapBuffers(EGL_DISPLAY(), mSurface);
}
virtual already_AddRefed<TextureImage>
CreateTextureImage(const nsIntSize& aSize,
TextureImage::ContentType aContentType,
GLenum aWrapMode,
PRBool aUseNearestFilter=PR_FALSE);
// hold a reference to the given surface
// for the lifetime of this context.
void HoldSurface(gfxASurface *aSurf) {
mThebesSurface = aSurf;
}
void SetQtGLWidget(void *widget) {
mGLWidget = widget;
}
void SetIsPBuffer() {
mIsPBuffer = PR_TRUE;
}
EGLContext Context() {
return mContext;
}
PRBool BindTex2DOffscreen(GLContext *aOffscreen);
void UnbindTex2DOffscreen(GLContext *aOffscreen);
PRBool ResizeOffscreen(const gfxIntSize& aNewSize);
void BindOffscreenFramebuffer();
static already_AddRefed<GLContextEGL>
CreateEGLPixmapOffscreenContext(const gfxIntSize& aSize,
const ContextFormat& aFormat);
static already_AddRefed<GLContextEGL>
CreateEGLPBufferOffscreenContext(const gfxIntSize& aSize,
const ContextFormat& aFormat);
#ifdef XP_WIN
static already_AddRefed<GLContextEGL>
CreateEGLWin32OffscreenContext(const gfxIntSize& aSize,
const ContextFormat& aFormat);
void HoldWin32Window(HWND aWnd) { mWnd = aWnd; }
HWND GetWin32Window() { return mWnd; }
#endif
void SetOffscreenSize(const gfxIntSize &aRequestedSize,
const gfxIntSize &aActualSize)
{
mOffscreenSize = aRequestedSize;
mOffscreenActualSize = aActualSize;
}
protected:
friend class GLContextProviderEGL;
EGLConfig mConfig;
EGLSurface mSurface;
EGLContext mContext;
void *mGLWidget;
nsRefPtr<gfxASurface> mThebesSurface;
PRBool mBound;
PRPackedBool mIsPBuffer;
PRPackedBool mIsDoubleBuffered;
#ifdef XP_WIN
AutoDestroyHWND mWnd;
#endif
};
PRBool
GLContextEGL::BindTex2DOffscreen(GLContext *aOffscreen)
{
if (aOffscreen->GetContextType() != ContextTypeEGL) {
NS_WARNING("non-EGL context");
return PR_FALSE;
}
GLContextEGL *offs = static_cast<GLContextEGL*>(aOffscreen);
if (offs->mIsPBuffer) {
PRBool ok = sEGLLibrary.fBindTexImage(EGL_DISPLAY(),
offs->mSurface,
LOCAL_EGL_BACK_BUFFER);
return ok;
}
if (offs->mOffscreenTexture) {
if (offs->GetSharedContext() != GLContextProviderEGL::GetGlobalContext())
{
NS_WARNING("offscreen FBO context can only be bound with context sharing!");
return PR_FALSE;
}
fBindTexture(LOCAL_GL_TEXTURE_2D, offs->mOffscreenTexture);
return PR_TRUE;
}
NS_WARNING("don't know how to bind this!");
return PR_FALSE;
}
void
GLContextEGL::UnbindTex2DOffscreen(GLContext *aOffscreen)
{
NS_ASSERTION(aOffscreen->GetContextType() == ContextTypeEGL, "wrong type");
GLContextEGL *offs = static_cast<GLContextEGL*>(aOffscreen);
if (offs->mIsPBuffer) {
sEGLLibrary.fReleaseTexImage(EGL_DISPLAY(),
offs->mSurface,
LOCAL_EGL_BACK_BUFFER);
}
}
PRBool
GLContextEGL::ResizeOffscreen(const gfxIntSize& aNewSize)
{
if (mIsPBuffer) {
EGLint pbattrs[] = {
LOCAL_EGL_WIDTH, 0,
LOCAL_EGL_HEIGHT, 0,
LOCAL_EGL_TEXTURE_TARGET, LOCAL_EGL_TEXTURE_2D,
LOCAL_EGL_TEXTURE_FORMAT,
mCreationFormat.minAlpha ?
LOCAL_EGL_TEXTURE_RGBA :
LOCAL_EGL_TEXTURE_RGB,
LOCAL_EGL_NONE
};
EGLSurface surface = nsnull;
gfxIntSize pbsize(aNewSize);
TRY_AGAIN_POWER_OF_TWO:
pbattrs[1] = pbsize.width;
pbattrs[3] = pbsize.height;
surface = sEGLLibrary.fCreatePbufferSurface(EGL_DISPLAY(), mConfig, pbattrs);
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 resize pbuffer, trying power of two dims");
goto TRY_AGAIN_POWER_OF_TWO;
}
NS_WARNING("Failed to resize pbuffer");
return nsnull;
}
SetOffscreenSize(aNewSize, pbsize);
sEGLLibrary.fDestroySurface(EGL_DISPLAY(), mSurface);
mSurface = surface;
MakeCurrent(PR_TRUE);
ClearSafely();
return PR_TRUE;
}
return ResizeOffscreenFBO(aNewSize);
}
static GLContextEGL *
GetGlobalContextEGL()
{
return static_cast<GLContextEGL*>(GLContextProviderEGL::GetGlobalContext());
}
static GLenum
GLFormatForImage(gfxASurface::gfxImageFormat aFormat)
{
switch (aFormat) {
case gfxASurface::ImageFormatARGB32:
return LOCAL_GL_RGBA;
case gfxASurface::ImageFormatRGB24:
// this often isn't correct, because we can't guarantee that
// the alpha byte will be 0xff coming from the image surface
NS_WARNING("Using GL_RGBA for ImageFormatRGB24, are you sure you know what you're doing?");
return LOCAL_GL_RGBA;
case gfxASurface::ImageFormatRGB16_565:
return LOCAL_GL_RGB;
default:
NS_WARNING("Unknown GL format for Image format");
}
return 0;
}
static GLenum
GLTypeForImage(gfxASurface::gfxImageFormat aFormat)
{
switch (aFormat) {
case gfxASurface::ImageFormatARGB32:
case gfxASurface::ImageFormatRGB24:
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)
: TextureImage(aTexture, aSize, aWrapMode, aContentType)
, mGLContext(aContext)
, mUpdateFormat(gfxASurface::ImageFormatUnknown)
, mSurface(nsnull)
, mConfig(nsnull)
, mImageKHR(nsnull)
, mCreated(PR_FALSE)
, mBound(PR_FALSE)
, mIsLocked(PR_FALSE)
{
mUpdateFormat = gfxASurface::FormatFromContent(GetContentType());
// Convert RGB24 to either ARGB32 on mobile. We can't
// generate GL_RGB data, so we'll always have an alpha byte
// for RGB24. No easy way to upload that to GL.
//
// Note that if we start using RGB565 here, we'll need to
// watch for a) setting mIsRGBFormat to TRUE; and b) getting
// the stride right.
if (mUpdateFormat == gfxASurface::ImageFormatRGB24) {
mUpdateFormat = gfxASurface::ImageFormatARGB32;
}
if (gUseBackingSurface) {
CreateBackingSurface(gfxIntSize(aSize.width, aSize.height));
}
}
virtual ~TextureImageEGL()
{
GLContext *ctx = mGLContext;
if (ctx->IsDestroyed() || !NS_IsMainThread()) {
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()) {
mGLContext->MakeCurrent();
mGLContext->fDeleteTextures(1, &mTexture);
ReleaseTexImage();
DestroyEGLSurface();
}
}
virtual gfxContext* BeginUpdate(nsIntRegion& aRegion)
{
NS_ASSERTION(!mUpdateContext, "BeginUpdate() without EndUpdate()?");
// determine the region the client will need to repaint
if (!mCreated) {
// if the texture hasn't been initialized yet, force the
// client to paint everything
mUpdateRect = nsIntRect(nsIntPoint(0, 0), mSize);
//printf_stderr("v Forcing full paint\n");
} else {
mUpdateRect = aRegion.GetBounds();
}
//printf_stderr("BeginUpdate with updateRect [%d %d %d %d]\n", mUpdateRect.x, mUpdateRect.y, mUpdateRect.width, mUpdateRect.height);
// 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.
aRegion = nsIntRegion(mUpdateRect);
nsIntSize rgnSize = mUpdateRect.Size();
if (!nsIntRect(nsIntPoint(0, 0), mSize).Contains(mUpdateRect)) {
NS_ERROR("update outside of image");
return NULL;
}
if (mBackingSurface) {
if (sEGLLibrary.HasKHRLockSurface()) {
nsRefPtr<gfxASurface> surface = GetLockSurface();
mUpdateContext = new gfxContext(surface);
mUpdateContext->Rectangle(gfxRect(mUpdateRect.x, mUpdateRect.y, mUpdateRect.width, mUpdateRect.height));
mUpdateContext->Clip();
} else {
mUpdateContext = new gfxContext(mBackingSurface);
}
return mUpdateContext;
}
// if we get this far, then we're using Cairo's byte order
mIsRGBFormat = PR_FALSE;
//printf_stderr("creating image surface %dx%d format %d\n", mUpdateRect.width, mUpdateRect.height, mUpdateFormat);
nsRefPtr<gfxASurface> updateSurface =
new gfxImageSurface(gfxIntSize(mUpdateRect.width, mUpdateRect.height),
mUpdateFormat);
updateSurface->SetDeviceOffset(gfxPoint(-mUpdateRect.x, -mUpdateRect.y));
mUpdateContext = new gfxContext(updateSurface);
return mUpdateContext;
}
virtual PRBool EndUpdate()
{
NS_ASSERTION(!!mUpdateContext, "EndUpdate() without BeginUpdate()?");
if (mIsLocked) {
UnlockSurface();
mCreated = PR_TRUE;
mUpdateContext = nsnull;
return PR_FALSE;
}
if (mBackingSurface && mUpdateContext->OriginalSurface() == mBackingSurface) {
#ifdef MOZ_X11
if (mBackingSurface->GetType() == gfxASurface::SurfaceTypeXlib) {
XSync(DefaultXDisplay(), False);
}
#endif
mBackingSurface->SetDeviceOffset(gfxPoint(0, 0));
mCreated = PR_TRUE;
mUpdateContext = nsnull;
return PR_FALSE;
}
//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.
nsRefPtr<gfxASurface> originalSurface = mUpdateContext->OriginalSurface();
// 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.
originalSurface->SetDeviceOffset(gfxPoint(0, 0));
nsRefPtr<gfxImageSurface> uploadImage = nsnull;
gfxIntSize updateSize(mUpdateRect.width, mUpdateRect.height);
NS_ASSERTION(originalSurface->GetType() == gfxASurface::SurfaceTypeImage &&
originalSurface->GetSize() == updateSize,
"Upload image isn't an image surface when one is expected, or is wrong size!");
uploadImage = static_cast<gfxImageSurface*>(originalSurface.get());
if (!uploadImage) {
return PR_FALSE;
}
mGLContext->MakeCurrent();
mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
if (!mCreated) {
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());
mCreated = PR_TRUE;
} else {
mGLContext->fTexSubImage2D(LOCAL_GL_TEXTURE_2D,
0,
mUpdateRect.x,
mUpdateRect.y,
mUpdateRect.width,
mUpdateRect.height,
GLFormatForImage(uploadImage->Format()),
GLTypeForImage(uploadImage->Format()),
uploadImage->Data());
}
mUpdateContext = nsnull;
return PR_TRUE; // mTexture is bound
}
virtual PRBool InUpdate() const { return !!mUpdateContext; }
virtual void Resize(const nsIntSize& aSize)
{
NS_ASSERTION(!mUpdateContext, "Resize() while in update?");
if (mSize == aSize && mCreated)
return;
if (mBackingSurface) {
CreateBackingSurface(gfxIntSize(aSize.width, aSize.height));
} else {
mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
mGLContext->fTexImage2D(LOCAL_GL_TEXTURE_2D,
0,
GLFormatForImage(mUpdateFormat),
aSize.width,
aSize.height,
0,
GLFormatForImage(mUpdateFormat),
GLTypeForImage(mUpdateFormat),
NULL);
}
mCreated = PR_TRUE;
mSize = aSize;
}
PRBool BindTexImage()
{
if (mBound && !ReleaseTexImage())
return PR_FALSE;
EGLBoolean success =
sEGLLibrary.fBindTexImage(EGL_DISPLAY(),
(EGLSurface)mSurface,
LOCAL_EGL_BACK_BUFFER);
if (success == LOCAL_EGL_FALSE)
return PR_FALSE;
mBound = PR_TRUE;
return PR_TRUE;
}
PRBool ReleaseTexImage()
{
if (!mBound)
return PR_TRUE;
EGLBoolean success =
sEGLLibrary.fReleaseTexImage(EGL_DISPLAY(),
(EGLSurface)mSurface,
LOCAL_EGL_BACK_BUFFER);
if (success == LOCAL_EGL_FALSE)
return PR_FALSE;
mBound = PR_FALSE;
return PR_TRUE;
}
virtual already_AddRefed<gfxImageSurface> GetLockSurface()
{
if (mIsLocked) {
NS_WARNING("Can't lock surface twice");
return nsnull;
}
if (!sEGLLibrary.HasKHRLockSurface()) {
NS_WARNING("GetLockSurface called, but no EGL_KHR_lock_surface extension!");
return nsnull;
}
if (!CreateEGLSurface(mBackingSurface)) {
NS_WARNING("Failed to create EGL surface");
return nsnull;
}
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.fLockSurfaceKHR(EGL_DISPLAY(), mSurface, lock_attribs);
mIsLocked = PR_TRUE;
unsigned char *data = nsnull;
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;
}
sEGLLibrary.fUnlockSurfaceKHR(EGL_DISPLAY(), mSurface);
DestroyEGLSurface();
mIsLocked = PR_FALSE;
}
virtual already_AddRefed<gfxASurface> GetBackingSurface()
{
if (mBackingSurface) {
NS_ADDREF(mBackingSurface);
}
return mBackingSurface.get();
}
virtual PRBool CreateEGLSurface(gfxASurface* aSurface)
{
#if 0
if (!aSurface) {
NS_WARNING("no surface");
return PR_FALSE;
}
if (aSurface->GetType() != gfxASurface::SurfaceTypeXlib) {
NS_WARNING("wrong surface type, must be xlib");
return PR_FALSE;
}
if (mSurface) {
NS_WARNING("surface already exists");
return PR_TRUE;
}
EGLSurface surface = FindEGLSurfaceforXSurface(aSurface, &mConfig);
if (!surface) {
NS_WARNING("couldn't find X config for surface");
return PR_FALSE;
}
mSurface = surface;
return PR_TRUE;
#else
return PR_FALSE;
#endif
}
virtual void DestroyEGLSurface(void)
{
if (!mSurface)
return;
sEGLLibrary.fDestroySurface(EGL_DISPLAY(), mSurface);
mSurface = nsnull;
}
virtual PRBool CreateBackingSurface(const gfxIntSize& aSize)
{
ReleaseTexImage();
DestroyEGLSurface();
mBackingSurface = nsnull;
#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 = nsnull;
if (sEGLLibrary.HasKHRImagePixmap() && sEGLLibrary.HasKHRImageTexture2D()) {
mImageKHR =
sEGLLibrary.fCreateImageKHR(EGL_DISPLAY(),
EGL_NO_CONTEXT,
LOCAL_EGL_NATIVE_PIXMAP_KHR,
(EGLClientBuffer)xsurface->XDrawable(),
NULL);
if (!mImageKHR) {
printf_stderr("couldn't create EGL image: ERROR (0x%04x)\n", sEGLLibrary.fGetError());
return PR_FALSE;
}
mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
sEGLLibrary.fImageTargetTexture2DOES(LOCAL_GL_TEXTURE_2D, mImageKHR);
sEGLLibrary.fDestroyImageKHR(EGL_DISPLAY(), mImageKHR);
mImageKHR = NULL;
} else {
if (!CreateEGLSurface(xsurface)) {
printf_stderr("ProviderEGL Failed create EGL surface: ERROR (0x%04x)\n", sEGLLibrary.fGetError());
return PR_FALSE;
}
if (!BindTexImage()) {
printf_stderr("ProviderEGL Failed to bind teximage: ERROR (0x%04x)\n", sEGLLibrary.fGetError());
return PR_FALSE;
}
}
mBackingSurface = xsurface;
mIsRGBFormat = PR_TRUE;
#endif
return mBackingSurface != nsnull;
}
protected:
typedef gfxASurface::gfxImageFormat ImageFormat;
GLContext* mGLContext;
nsRefPtr<gfxContext> mUpdateContext;
nsIntRect mUpdateRect;
ImageFormat mUpdateFormat;
nsRefPtr<gfxASurface> mBackingSurface;
EGLSurface mSurface;
EGLConfig mConfig;
EGLImageKHR mImageKHR;
PRPackedBool mCreated;
PRPackedBool mBound;
PRPackedBool mIsLocked;
};
already_AddRefed<TextureImage>
GLContextEGL::CreateTextureImage(const nsIntSize& aSize,
TextureImage::ContentType aContentType,
GLenum aWrapMode,
PRBool aUseNearestFilter)
{
MakeCurrent();
GLuint texture;
fGenTextures(1, &texture);
fActiveTexture(LOCAL_GL_TEXTURE0);
fBindTexture(LOCAL_GL_TEXTURE_2D, texture);
nsRefPtr<TextureImageEGL> teximage =
new TextureImageEGL(texture, aSize, aWrapMode, aContentType, this);
GLint texfilter = aUseNearestFilter ? 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, aWrapMode);
fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_T, aWrapMode);
return teximage.forget();
}
static ContextFormat
DepthToGLFormat(int aDepth)
{
switch (aDepth) {
case 32:
return ContextFormat::BasicRGBA32;
case 24:
return ContextFormat::BasicRGB24;
case 16:
return ContextFormat::BasicRGB16_565;
default:
break;
}
return ContextFormat::BasicRGBA32;
}
#ifdef MOZ_WIDGET_QT
already_AddRefed<GLContext>
GLContextProviderEGL::CreateForWindow(nsIWidget *aWidget)
{
if (!sEGLLibrary.EnsureInitialized()) {
return nsnull;
}
QWidget *viewport = static_cast<QWidget*>(aWidget->GetNativeData(NS_NATIVE_SHELLWIDGET));
if (!viewport)
return nsnull;
if (viewport->paintEngine()->type() == QPaintEngine::OpenGL2) {
// Qt widget viewport already have GL context created by Qt
// Create dummy GLContextEGL class
nsRefPtr<GLContextEGL> glContext =
new GLContextEGL(ContextFormat(DepthToGLFormat(viewport->depth())),
NULL,
NULL, NULL,
sEGLLibrary.fGetCurrentContext());
if (!glContext->Init())
return nsnull;
glContext->SetQtGLWidget(viewport);
return glContext.forget();
}
// All Qt nsIWidget's have the same X-Window surface
// And EGL not allowing to create multiple GL context for the same window
// we should be able to create GL context for QGV viewport once, and reuse it for all child widgets
NS_ERROR("Need special GLContext implementation for QT widgets structure");
// Switch to software rendering here
return nsnull;
}
#else
EGLConfig
CreateConfig()
{
EGLConfig config;
EGLint attribs[] = {
LOCAL_EGL_SURFACE_TYPE, LOCAL_EGL_WINDOW_BIT,
LOCAL_EGL_RENDERABLE_TYPE, LOCAL_EGL_OPENGL_ES2_BIT,
#ifdef MOZ_GFX_OPTIMIZE_MOBILE
LOCAL_EGL_RED_SIZE, 5,
LOCAL_EGL_GREEN_SIZE, 6,
LOCAL_EGL_BLUE_SIZE, 5,
LOCAL_EGL_ALPHA_SIZE, 0,
#else
LOCAL_EGL_RED_SIZE, 8,
LOCAL_EGL_GREEN_SIZE, 8,
LOCAL_EGL_BLUE_SIZE, 8,
LOCAL_EGL_ALPHA_SIZE, 8,
#endif
LOCAL_EGL_NONE
};
EGLConfig configs[64];
EGLint ncfg = 64;
if (!sEGLLibrary.fChooseConfig(EGL_DISPLAY(), attribs, configs, ncfg, &ncfg) ||
ncfg < 1)
{
return nsnull;
}
config = 0;
for (int i = 0; i < ncfg; ++i) {
EGLint r, g, b, a;
sEGLLibrary.fGetConfigAttrib(EGL_DISPLAY(), configs[i], LOCAL_EGL_RED_SIZE, &r);
sEGLLibrary.fGetConfigAttrib(EGL_DISPLAY(), configs[i], LOCAL_EGL_GREEN_SIZE, &g);
sEGLLibrary.fGetConfigAttrib(EGL_DISPLAY(), configs[i], LOCAL_EGL_BLUE_SIZE, &b);
sEGLLibrary.fGetConfigAttrib(EGL_DISPLAY(), configs[i], LOCAL_EGL_ALPHA_SIZE, &a);
#ifdef MOZ_GFX_OPTIMIZE_MOBILE
if (r == 5 && g == 6 && b == 5) {
config = configs[i];
break;
}
#else
if (r == 8 && g == 8 && b == 8 && a == 8) {
config = configs[i];
break;
}
#endif
}
return config;
}
EGLSurface
CreateSurfaceForWindow(nsIWidget *aWidget, EGLConfig config)
{
EGLSurface surface;
#ifdef DEBUG
sEGLLibrary.DumpEGLConfig(config);
#endif
#ifdef ANDROID
// On Android, we have to ask Java to make the eglCreateWindowSurface
// call for us. See GLHelpers.java for a description of why.
//
// We also only have one true "window", so we just use it directly and ignore
// what was passed in.
printf_stderr("... requesting window surface from bridge\n");
surface = mozilla::AndroidBridge::Bridge()->
CallEglCreateWindowSurface(EGL_DISPLAY(), config,
mozilla::AndroidBridge::Bridge()->SurfaceView());
printf_stderr("got surface %p\n", surface);
#else
surface = sEGLLibrary.fCreateWindowSurface(EGL_DISPLAY(), config, GET_NATIVE_WINDOW(aWidget), 0);
#endif
return surface;
}
already_AddRefed<GLContext>
GLContextProviderEGL::CreateForWindow(nsIWidget *aWidget)
{
EGLContext context;
EGLConfig config;
if (!sEGLLibrary.EnsureInitialized()) {
return nsnull;
}
config = CreateConfig();
if (!config) {
printf_stderr("Failed to create EGL config!\n");
return nsnull;
}
EGLSurface surface = CreateSurfaceForWindow(aWidget, config);
if (!surface) {
return nsnull;
}
if (!sEGLLibrary.fBindAPI(LOCAL_EGL_OPENGL_ES_API)) {
sEGLLibrary.fDestroySurface(EGL_DISPLAY(), surface);
return nsnull;
}
EGLint cxattribs[] = {
LOCAL_EGL_CONTEXT_CLIENT_VERSION, 2,
LOCAL_EGL_NONE
};
GLContextEGL *shareContext = GetGlobalContextEGL();
TRY_AGAIN_NO_SHARING:
context = sEGLLibrary.fCreateContext(EGL_DISPLAY(),
config,
shareContext ? shareContext->mContext : EGL_NO_CONTEXT,
cxattribs);
if (!context) {
if (shareContext) {
NS_WARNING("CreateForWindow -- couldn't share, trying again");
shareContext = nsnull;
goto TRY_AGAIN_NO_SHARING;
}
NS_WARNING("CreateForWindow -- no context, giving up");
sEGLLibrary.fDestroySurface(EGL_DISPLAY(), surface);
return nsnull;
}
nsRefPtr<GLContextEGL> glContext = new GLContextEGL(ContextFormat(ContextFormat::BasicRGB24),
shareContext,
config, surface, context);
if (!glContext->Init())
return nsnull;
#if defined(XP_WIN) || defined(ANDROID)
glContext->SetIsDoubleBuffered(PR_TRUE);
#endif
return glContext.forget();
}
#endif
already_AddRefed<GLContextEGL>
GLContextEGL::CreateEGLPBufferOffscreenContext(const gfxIntSize& aSize,
const ContextFormat& aFormat)
{
EGLConfig config;
EGLSurface surface;
EGLContext context;
EGLint attribs[] = {
LOCAL_EGL_RENDERABLE_TYPE, LOCAL_EGL_OPENGL_ES2_BIT,
LOCAL_EGL_SURFACE_TYPE, LOCAL_EGL_PBUFFER_BIT,
LOCAL_EGL_RED_SIZE, aFormat.red,
LOCAL_EGL_GREEN_SIZE, aFormat.green,
LOCAL_EGL_BLUE_SIZE, aFormat.blue,
LOCAL_EGL_ALPHA_SIZE, aFormat.alpha,
LOCAL_EGL_DEPTH_SIZE, aFormat.minDepth,
LOCAL_EGL_STENCIL_SIZE, aFormat.minStencil,
aFormat.minAlpha ?
LOCAL_EGL_BIND_TO_TEXTURE_RGBA :
LOCAL_EGL_BIND_TO_TEXTURE_RGB,
LOCAL_EGL_TRUE,
LOCAL_EGL_NONE
};
EGLConfig configs[64];
int numConfigs = 64;
if (!sEGLLibrary.fChooseConfig(EGL_DISPLAY(),
attribs,
configs, numConfigs,
&numConfigs)
|| numConfigs == 0)
{
NS_WARNING("No configs");
// no configs? no pbuffers!
return nsnull;
}
// XXX do some smarter matching here
config = configs[0];
#ifdef DEBUG
sEGLLibrary.DumpEGLConfig(config);
#endif
gfxIntSize pbsize(aSize);
EGLint pbattrs[] = {
LOCAL_EGL_WIDTH, 0,
LOCAL_EGL_HEIGHT, 0,
LOCAL_EGL_TEXTURE_TARGET, LOCAL_EGL_TEXTURE_2D,
LOCAL_EGL_TEXTURE_FORMAT,
aFormat.minAlpha ?
LOCAL_EGL_TEXTURE_RGBA :
LOCAL_EGL_TEXTURE_RGB,
LOCAL_EGL_NONE
};
TRY_AGAIN_POWER_OF_TWO:
pbattrs[1] = pbsize.width;
pbattrs[3] = pbsize.height;
surface = sEGLLibrary.fCreatePbufferSurface(EGL_DISPLAY(), config, pbattrs);
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");
return nsnull;
}
sEGLLibrary.fBindAPI(LOCAL_EGL_OPENGL_ES_API);
EGLint cxattrs[] = {
LOCAL_EGL_CONTEXT_CLIENT_VERSION, 2,
LOCAL_EGL_NONE
};
context = sEGLLibrary.fCreateContext(EGL_DISPLAY(),
config,
EGL_NO_CONTEXT,
cxattrs);
if (!context) {
NS_WARNING("Failed to create context");
sEGLLibrary.fDestroySurface(EGL_DISPLAY(), surface);
return nsnull;
}
nsRefPtr<GLContextEGL> glContext = new GLContextEGL(aFormat, nsnull,
config, surface, context,
PR_TRUE);
if (!glContext->Init()) {
return nsnull;
}
glContext->SetOffscreenSize(aSize, pbsize);
glContext->SetIsPBuffer();
return glContext.forget();
}
#ifdef MOZ_X11
static EGLConfig
FindConfigForThebesXSurface(gfxASurface *aSurface, EGLSurface *aRetSurface)
{
gfxXlibSurface *xsurface = static_cast<gfxXlibSurface*>(aSurface);
EGLConfig configs[32];
int numConfigs = 32;
EGLSurface surface = nsnull;
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
};
EGLint pixmap_config_rgb[] = {
LOCAL_EGL_TEXTURE_TARGET, LOCAL_EGL_TEXTURE_2D,
LOCAL_EGL_TEXTURE_FORMAT, LOCAL_EGL_TEXTURE_RGB,
LOCAL_EGL_NONE
};
EGLint pixmap_config_rgba[] = {
LOCAL_EGL_TEXTURE_TARGET, LOCAL_EGL_TEXTURE_2D,
LOCAL_EGL_TEXTURE_FORMAT, LOCAL_EGL_TEXTURE_RGBA,
LOCAL_EGL_NONE
};
if (!sEGLLibrary.fChooseConfig(EGL_DISPLAY(), pixmap_config,
configs, numConfigs, &numConfigs))
return nsnull;
if (numConfigs == 0)
return nsnull;
PRBool opaque =
aSurface->GetContentType() == gfxASurface::CONTENT_COLOR;
int i = 0;
for (i = 0; i < numConfigs; ++i) {
if (opaque)
surface = sEGLLibrary.fCreatePixmapSurface(EGL_DISPLAY(), configs[i],
xsurface->XDrawable(),
pixmap_config_rgb);
else
surface = sEGLLibrary.fCreatePixmapSurface(EGL_DISPLAY(), configs[i],
xsurface->XDrawable(),
pixmap_config_rgba);
if (surface != EGL_NO_SURFACE)
break;
}
if (!surface) {
return nsnull;
}
if (aRetSurface) {
*aRetSurface = surface;
}
return configs[i];
}
#endif
already_AddRefed<GLContextEGL>
GLContextEGL::CreateEGLPixmapOffscreenContext(const gfxIntSize& aSize,
const ContextFormat& aFormat)
{
// XXX -- write me.
// This needs to find a FBConfig/Visual that matches aFormat, and allocate
// a gfxXlibSurface of the appropriat format, and then create a context
// for it.
//
// The code below is almost correct, except it doesn't do the format-FBConfig
// matching, instead just creating a random gfxXlibSurface. The code below just
// uses context sharing and a FBO target, when instead it should avoid context
// sharing if some form of texture-from-pixmap functionality is available.
gfxASurface *thebesSurface = nsnull;
EGLNativePixmapType pixmap = 0;
#ifdef MOZ_X11
nsRefPtr<gfxXlibSurface> xsurface =
gfxXlibSurface::Create(DefaultScreenOfDisplay(DefaultXDisplay()),
gfxXlibSurface::FindRenderFormat(DefaultXDisplay(),
gfxASurface::ImageFormatRGB24),
gfxIntSize(16, 16));
if (xsurface->CairoStatus() != 0)
return nsnull;
thebesSurface = xsurface;
pixmap = xsurface->XDrawable();
#endif
if (!pixmap) {
return nsnull;
}
EGLSurface surface;
EGLConfig config = 0;
#ifdef MOZ_X11
config = FindConfigForThebesXSurface(thebesSurface,
&surface);
#endif
if (!config) {
return nsnull;
}
EGLint cxattribs[] = {
LOCAL_EGL_CONTEXT_CLIENT_VERSION, 2,
LOCAL_EGL_NONE
};
GLContextEGL *shareContext = GetGlobalContextEGL();
if (!shareContext) {
// we depend on context sharing currently
sEGLLibrary.fDestroySurface(EGL_DISPLAY(), surface);
return nsnull;
}
EGLContext context = sEGLLibrary.fCreateContext(EGL_DISPLAY(),
config,
shareContext->Context(),
cxattribs);
if (!context) {
sEGLLibrary.fDestroySurface(EGL_DISPLAY(), surface);
return nsnull;
}
nsRefPtr<GLContextEGL> glContext = new GLContextEGL(aFormat, shareContext,
config, surface, context,
PR_TRUE);
if (!glContext->Init() ||
!glContext->ResizeOffscreenFBO(aSize))
return nsnull;
glContext->HoldSurface(thebesSurface);
return glContext.forget();
}
#ifdef XP_WIN
already_AddRefed<GLContextEGL>
GLContextEGL::CreateEGLWin32OffscreenContext(const gfxIntSize& aSize,
const ContextFormat& aFormat)
{
if (!sEGLLibrary.EnsureInitialized()) {
return nsnull;
}
WNDCLASSW wc;
if (!GetClassInfoW(GetModuleHandle(NULL), L"ANGLEContextClass", &wc)) {
ZeroMemory(&wc, sizeof(WNDCLASSW));
wc.style = CS_OWNDC;
wc.hInstance = GetModuleHandle(NULL);
wc.lpfnWndProc = DefWindowProc;
wc.lpszClassName = L"ANGLEContextClass";
if (!RegisterClassW(&wc)) {
NS_WARNING("Failed to register ANGLEContextClass?!");
return NULL;
}
}
AutoDestroyHWND wnd = CreateWindowW(L"ANGLEContextClass", L"ANGLEContext", 0,
0, 0, 16, 16,
NULL, NULL, GetModuleHandle(NULL), NULL);
NS_ENSURE_TRUE(HWND(wnd), NULL);
EGLConfig config;
EGLSurface surface;
EGLContext context;
// We don't really care, we're going to use a FBO anyway
EGLint attribs[] = {
LOCAL_EGL_SURFACE_TYPE, LOCAL_EGL_WINDOW_BIT,
LOCAL_EGL_RENDERABLE_TYPE, LOCAL_EGL_OPENGL_ES2_BIT,
LOCAL_EGL_NONE
};
EGLint ncfg = 1;
if (!sEGLLibrary.fChooseConfig(sEGLLibrary.Display(), attribs, &config, ncfg, &ncfg) ||
ncfg < 1)
{
return nsnull;
}
surface = sEGLLibrary.fCreateWindowSurface(sEGLLibrary.Display(),
config,
HWND(wnd),
0);
if (!surface) {
return nsnull;
}
if (!sEGLLibrary.fBindAPI(LOCAL_EGL_OPENGL_ES_API)) {
sEGLLibrary.fDestroySurface(sEGLLibrary.Display(), surface);
return nsnull;
}
EGLint cxattribs[] = {
LOCAL_EGL_CONTEXT_CLIENT_VERSION, 2,
LOCAL_EGL_NONE
};
context = sEGLLibrary.fCreateContext(sEGLLibrary.Display(),
config,
EGL_NO_CONTEXT,
cxattribs);
if (!context) {
sEGLLibrary.fDestroySurface(sEGLLibrary.Display(), surface);
return nsnull;
}
nsRefPtr<GLContextEGL> glContext = new GLContextEGL(aFormat, nsnull,
config, surface, context,
PR_TRUE);
// hold this even before we initialize, because we need to make
// sure it gets destroyed after the surface etc. in case of error.
glContext->HoldWin32Window(wnd.forget());
if (!glContext->Init() ||
!glContext->ResizeOffscreenFBO(aSize))
{
return nsnull;
}
return glContext.forget();
}
#endif
// 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& aSize,
const ContextFormat& aFormat)
{
if (!sEGLLibrary.EnsureInitialized()) {
return nsnull;
}
#if defined(ANDROID)
return GLContextEGL::CreateEGLPBufferOffscreenContext(aSize, aFormat);
#elif defined(MOZ_X11)
return GLContextEGL::CreateEGLPixmapOffscreenContext(aSize, aFormat);
#elif defined(XP_WIN)
return GLContextEGL::CreateEGLWin32OffscreenContext(aSize, aFormat);
#else
return nsnull;
#endif
}
static ContextFormat
ContentTypeToGLFormat(gfxASurface::gfxContentType aCType)
{
switch (aCType) {
case gfxASurface::CONTENT_COLOR_ALPHA:
return ContextFormat::BasicRGBA32;
case gfxASurface::CONTENT_COLOR:
#ifdef MOZ_GFX_OPTIMIZE_MOBILE
return ContextFormat::BasicRGB16_565;
#else
return ContextFormat::BasicRGB24;
#endif
default:
break;
}
return ContextFormat::BasicRGBA32;
}
already_AddRefed<GLContext>
GLContextProviderEGL::CreateForNativePixmapSurface(gfxASurface* aSurface)
{
EGLSurface surface = nsnull;
EGLContext context = nsnull;
if (!sEGLLibrary.EnsureInitialized())
return nsnull;
#ifdef MOZ_X11
if (aSurface->GetType() != gfxASurface::SurfaceTypeXlib) {
// Not implemented
return nsnull;
}
EGLConfig config = FindConfigForThebesXSurface(aSurface, &surface);
if (!config) {
return nsnull;
}
EGLint cxattribs[] = {
LOCAL_EGL_CONTEXT_CLIENT_VERSION, 2,
LOCAL_EGL_NONE
};
context = sEGLLibrary.fCreateContext(EGL_DISPLAY(),
config,
EGL_NO_SURFACE,
cxattribs);
if (!context) {
sEGLLibrary.fDestroySurface(EGL_DISPLAY(), surface);
return nsnull;
}
nsRefPtr<GLContextEGL> glContext =
new GLContextEGL(ContextFormat(ContentTypeToGLFormat(aSurface->GetContentType())),
nsnull, config, surface, context, PR_FALSE);
glContext->HoldSurface(aSurface);
return glContext.forget().get();
#else
(void)surface;
(void)context;
// Not implemented
return nsnull;
#endif
}
static nsRefPtr<GLContext> gGlobalContext;
GLContext *
GLContextProviderEGL::GetGlobalContext()
{
static bool triedToCreateContext = false;
if (!triedToCreateContext && !gGlobalContext) {
triedToCreateContext = true;
gGlobalContext = CreateOffscreen(gfxIntSize(16, 16));
if (gGlobalContext)
gGlobalContext->SetIsGlobalSharedContext(PR_TRUE);
}
return gGlobalContext;
}
void
GLContextProviderEGL::Shutdown()
{
gGlobalContext = nsnull;
}
} /* namespace gl */
} /* namespace mozilla */
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