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gecko/gfx/thebes/GLContextProviderEGL.cpp
Benoit Jacob 88165b3ed8 Bug 597881 - OpenGL debug mode - r=vladimir
2010-10-12 17:01:59 -04:00

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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 "nsIWidget.h"
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()
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;
}
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;
// 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
// ANGLE is an addon currently, so we have to do a bit of work
// to find the directory; the addon sets this on startup/shutdown.
do {
nsCOMPtr<nsIPrefBranch> prefs = do_GetService("@mozilla.org/preferences-service;1");
nsCOMPtr<nsILocalFile> angleFile, glesv2File;
if (!prefs)
break;
nsresult rv = prefs->GetComplexValue("gfx.angle.egl.path",
NS_GET_IID(nsILocalFile),
getter_AddRefs(angleFile));
if (NS_FAILED(rv) || !angleFile)
break;
nsCAutoString s;
// note that we have to load the libs in this order, because libEGL.dll
// depends on libGLESv2.dll, but is not in our search path.
nsCOMPtr<nsIFile> f;
angleFile->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;
angleFile->Append(NS_LITERAL_STRING("libEGL.dll"));
angleFile->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),
{ 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;
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 (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 (!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;
}
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;
} 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;
}
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 PRBool TextureImageSupportsGetBackingSurface()
{
#ifdef MOZ_WIDGET_QT
return (gfxASurface::SurfaceTypeXlib ==
gfxPlatform::GetPlatform()->ScreenReferenceSurface()->GetType());
#else
return PR_TRUE;
#endif
}
virtual already_AddRefed<TextureImage>
CreateTextureImage(const nsIntSize& aSize,
TextureImage::ContentType aContentType,
GLint 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());
}
class TextureImageEGL : public TextureImage
{
public:
TextureImageEGL(GLuint aTexture,
const nsIntSize& aSize,
ContentType aContentType,
GLContext* aContext,
GLContextEGL* aImpl,
PRBool aIsRGB)
: TextureImage(aTexture, aSize, aContentType, aIsRGB)
, mGLContext(aContext)
, mImpl(aImpl)
{ }
virtual ~TextureImageEGL()
{
mGLContext->MakeCurrent();
if (mImpl)
mImpl->ReleaseTexImage();
mGLContext->fDeleteTextures(1, &mTexture);
mImpl = NULL;
}
virtual gfxContext* BeginUpdate(nsIntRegion& aRegion)
{
NS_ASSERTION(!mUpdateContext, "BeginUpdate() without EndUpdate()?");
if (mImpl) {
mUpdateContext = new gfxContext(mImpl->mThebesSurface);
// TextureImageEGL can handle updates to disparate regions
// aRegion = aRegion;
} else {
mUpdateRect = aRegion.GetBounds();
if (!mUpdateSurface) {
NS_ASSERTION(mUpdateRect.x == 0 && mUpdateRect.y == 0,
"Initial update has to be full surface!");
mUpdateSurface = new gfxImageSurface(gfxIntSize(mUpdateRect.width, mUpdateRect.height),
mContentType == gfxASurface::CONTENT_COLOR
? gfxASurface::ImageFormatRGB24
: gfxASurface::ImageFormatARGB32);
} else {
if (mUpdateRect.x + mUpdateRect.width > mUpdateSurface->Width() ||
mUpdateRect.y + mUpdateRect.height > mUpdateSurface->Height())
{
printf_stderr("Badness!\n");
}
}
aRegion = nsIntRegion(mUpdateRect);
//mUpdateSurface->SetDeviceOffset(gfxPoint(-mUpdateRect.x, -mUpdateRect.y));
mUpdateContext = new gfxContext(mUpdateSurface);
printf_stderr("UpdateRect: %d %d %d %d\n", mUpdateRect.x, mUpdateRect.y, mUpdateRect.width, mUpdateRect.height);
mUpdateContext->Rectangle(gfxRect(mUpdateRect.x, mUpdateRect.y, mUpdateRect.width, mUpdateRect.height));
mUpdateContext->Clip();
}
return mUpdateContext;
}
virtual PRBool EndUpdate()
{
NS_ASSERTION(mUpdateContext, "EndUpdate() without BeginUpdate()?");
mUpdateContext = nsnull;
if (mImpl) {
#ifdef MOZ_X11
// FIXME: do we need an XSync() or XFlush() here?
//XSync(False);
#endif
// X has already uploaded the new pixels to our Pixmap, so
// there's nothing else we need to do here
return PR_FALSE; // texture not bound
}
mGLContext->MakeCurrent();
mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
mGLContext->fTexImage2D(LOCAL_GL_TEXTURE_2D,
0,
LOCAL_GL_RGBA,
mUpdateSurface->Width(),
mUpdateSurface->Height(),
0,
LOCAL_GL_RGBA,
LOCAL_GL_UNSIGNED_BYTE,
mUpdateSurface->Data());
return PR_TRUE; // texture bound
}
virtual already_AddRefed<gfxASurface>
GetBackingSurface()
{
if (mImpl) {
NS_ADDREF(mImpl->mThebesSurface);
return mImpl->mThebesSurface.get();
}
return nsnull;
}
virtual PRBool InUpdate() const { return !!mUpdateContext; }
private:
GLContext* mGLContext;
nsRefPtr<GLContextEGL> mImpl;
nsRefPtr<gfxContext> mUpdateContext;
nsRefPtr<gfxImageSurface> mUpdateSurface;
nsIntRect mUpdateRect;
};
already_AddRefed<TextureImage>
GLContextEGL::CreateTextureImage(const nsIntSize& aSize,
TextureImage::ContentType aContentType,
GLint aWrapMode,
PRBool aUseNearestFilter)
{
nsRefPtr<GLContext> impl;
PRBool isRGB = PR_FALSE;
#ifndef XP_WIN
nsRefPtr<gfxASurface> pixmap =
gfxPlatform::GetPlatform()->
CreateOffscreenSurface(gfxIntSize(aSize.width, aSize.height),
aContentType);
impl = GLContextProviderEGL::CreateForNativePixmapSurface(pixmap);
if (impl) {
isRGB = PR_TRUE; // if this succeeded, then it'll be RGB, not BGR
}
#endif
MakeCurrent();
GLuint texture;
fGenTextures(1, &texture);
fActiveTexture(LOCAL_GL_TEXTURE0);
fBindTexture(LOCAL_GL_TEXTURE_2D, texture);
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);
if (impl)
impl->BindTexImage();
nsRefPtr<TextureImageEGL> teximage =
new TextureImageEGL(texture, aSize, aContentType, this,
static_cast<GLContextEGL*>(impl.get()),
isRGB);
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;
}
already_AddRefed<GLContext>
GLContextProviderEGL::CreateForWindow(nsIWidget *aWidget)
{
if (!sEGLLibrary.EnsureInitialized()) {
return nsnull;
}
#ifdef MOZ_WIDGET_QT
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 config;
EGLSurface surface;
EGLContext context;
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
}
if (!config) {
printf_stderr("Failed to create EGL config!\n");
return nsnull;
}
#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
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;
#ifdef XP_WIN
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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