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pjs/gfx/gl/GLContextProviderGLX.cpp

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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 Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Matt Woodrow <mwoodrow@mozilla.com>
* Bas Schouten <bschouten@mozilla.com>
*
* 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 ***** */
#ifdef MOZ_WIDGET_GTK2
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#define GET_NATIVE_WINDOW(aWidget) GDK_WINDOW_XID((GdkWindow *) aWidget->GetNativeData(NS_NATIVE_WINDOW))
#elif defined(MOZ_WIDGET_QT)
#include <QWidget>
#include <QX11Info>
#define GET_NATIVE_WINDOW(aWidget) static_cast<QWidget*>(aWidget->GetNativeData(NS_NATIVE_SHELLWIDGET))->handle()
#endif
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include "mozilla/X11Util.h"
#include "prenv.h"
#include "GLContextProvider.h"
#include "nsDebug.h"
#include "nsIWidget.h"
#include "GLXLibrary.h"
#include "gfxXlibSurface.h"
#include "gfxContext.h"
#include "gfxImageSurface.h"
#include "gfxPlatform.h"
#include "GLContext.h"
#include "gfxUtils.h"
#include "gfxCrashReporterUtils.h"
namespace mozilla {
namespace gl {
static bool gIsATI = false;
static bool gIsChromium = false;
static int gGLXMajorVersion = 0, gGLXMinorVersion = 0;
// Check that we have at least version aMajor.aMinor .
static inline bool
GLXVersionCheck(int aMajor, int aMinor)
{
return aMajor < gGLXMajorVersion ||
(aMajor == gGLXMajorVersion && aMinor <= gGLXMinorVersion);
}
static inline bool
HasExtension(const char* aExtensions, const char* aRequiredExtension)
{
return GLContext::ListHasExtension(
reinterpret_cast<const GLubyte*>(aExtensions), aRequiredExtension);
}
bool
GLXLibrary::EnsureInitialized()
{
if (mInitialized) {
return true;
}
// Don't repeatedly try to initialize.
if (mTriedInitializing) {
return false;
}
mTriedInitializing = true;
if (!mOGLLibrary) {
// see e.g. bug 608526: it is intrinsically interesting to know whether we have dynamically linked to libGL.so.1
// because at least the NVIDIA implementation requires an executable stack, which causes mprotect calls,
// which trigger glibc bug http://sourceware.org/bugzilla/show_bug.cgi?id=12225
#ifdef __OpenBSD__
const char *libGLfilename = "libGL.so";
#else
const char *libGLfilename = "libGL.so.1";
#endif
ScopedGfxFeatureReporter reporter(libGLfilename);
mOGLLibrary = PR_LoadLibrary(libGLfilename);
if (!mOGLLibrary) {
NS_WARNING("Couldn't load OpenGL shared library.");
return false;
}
reporter.SetSuccessful();
}
if (PR_GetEnv("MOZ_GLX_DEBUG")) {
mDebug = true;
}
LibrarySymbolLoader::SymLoadStruct symbols[] = {
/* functions that were in GLX 1.0 */
{ (PRFuncPtr*) &xDestroyContextInternal, { "glXDestroyContext", NULL } },
{ (PRFuncPtr*) &xMakeCurrentInternal, { "glXMakeCurrent", NULL } },
{ (PRFuncPtr*) &xSwapBuffersInternal, { "glXSwapBuffers", NULL } },
{ (PRFuncPtr*) &xQueryVersionInternal, { "glXQueryVersion", NULL } },
{ (PRFuncPtr*) &xGetCurrentContextInternal, { "glXGetCurrentContext", NULL } },
{ (PRFuncPtr*) &xWaitGLInternal, { "glXWaitGL", NULL } },
{ (PRFuncPtr*) &xWaitXInternal, { "glXWaitX", NULL } },
/* functions introduced in GLX 1.1 */
{ (PRFuncPtr*) &xQueryExtensionsStringInternal, { "glXQueryExtensionsString", NULL } },
{ (PRFuncPtr*) &xGetClientStringInternal, { "glXGetClientString", NULL } },
{ (PRFuncPtr*) &xQueryServerStringInternal, { "glXQueryServerString", NULL } },
{ NULL, { NULL } }
};
LibrarySymbolLoader::SymLoadStruct symbols13[] = {
/* functions introduced in GLX 1.3 */
{ (PRFuncPtr*) &xChooseFBConfigInternal, { "glXChooseFBConfig", NULL } },
{ (PRFuncPtr*) &xGetFBConfigAttribInternal, { "glXGetFBConfigAttrib", NULL } },
// WARNING: xGetFBConfigs not set in symbols13_ext
{ (PRFuncPtr*) &xGetFBConfigsInternal, { "glXGetFBConfigs", NULL } },
{ (PRFuncPtr*) &xGetVisualFromFBConfigInternal, { "glXGetVisualFromFBConfig", NULL } },
// WARNING: symbols13_ext sets xCreateGLXPixmapWithConfig instead
{ (PRFuncPtr*) &xCreatePixmapInternal, { "glXCreatePixmap", NULL } },
{ (PRFuncPtr*) &xDestroyPixmapInternal, { "glXDestroyPixmap", NULL } },
{ (PRFuncPtr*) &xCreateNewContextInternal, { "glXCreateNewContext", NULL } },
{ NULL, { NULL } }
};
LibrarySymbolLoader::SymLoadStruct symbols13_ext[] = {
/* extension equivalents for functions introduced in GLX 1.3 */
// GLX_SGIX_fbconfig extension
{ (PRFuncPtr*) &xChooseFBConfigInternal, { "glXChooseFBConfigSGIX", NULL } },
{ (PRFuncPtr*) &xGetFBConfigAttribInternal, { "glXGetFBConfigAttribSGIX", NULL } },
// WARNING: no xGetFBConfigs equivalent in extensions
{ (PRFuncPtr*) &xGetVisualFromFBConfigInternal, { "glXGetVisualFromFBConfig", NULL } },
// WARNING: different from symbols13:
{ (PRFuncPtr*) &xCreateGLXPixmapWithConfigInternal, { "glXCreateGLXPixmapWithConfigSGIX", NULL } },
{ (PRFuncPtr*) &xDestroyPixmapInternal, { "glXDestroyGLXPixmap", NULL } }, // not from ext
{ (PRFuncPtr*) &xCreateNewContextInternal, { "glXCreateContextWithConfigSGIX", NULL } },
{ NULL, { NULL } }
};
LibrarySymbolLoader::SymLoadStruct symbols14[] = {
/* functions introduced in GLX 1.4 */
{ (PRFuncPtr*) &xGetProcAddressInternal, { "glXGetProcAddress", NULL } },
{ NULL, { NULL } }
};
LibrarySymbolLoader::SymLoadStruct symbols14_ext[] = {
/* extension equivalents for functions introduced in GLX 1.4 */
// GLX_ARB_get_proc_address extension
{ (PRFuncPtr*) &xGetProcAddressInternal, { "glXGetProcAddressARB", NULL } },
{ NULL, { NULL } }
};
LibrarySymbolLoader::SymLoadStruct symbols_texturefrompixmap[] = {
{ (PRFuncPtr*) &xBindTexImageInternal, { "glXBindTexImageEXT", NULL } },
{ (PRFuncPtr*) &xReleaseTexImageInternal, { "glXReleaseTexImageEXT", NULL } },
{ NULL, { NULL } }
};
LibrarySymbolLoader::SymLoadStruct symbols_robustness[] = {
{ (PRFuncPtr*) &xCreateContextAttribsInternal, { "glXCreateContextAttribsARB", NULL } },
{ NULL, { NULL } }
};
if (!LibrarySymbolLoader::LoadSymbols(mOGLLibrary, &symbols[0])) {
NS_WARNING("Couldn't find required entry point in OpenGL shared library");
return false;
}
Display *display = DefaultXDisplay();
int screen = DefaultScreen(display);
const char *serverVendor = NULL;
const char *serverVersionStr = NULL;
const char *extensionsStr = NULL;
if (!xQueryVersion(display, &gGLXMajorVersion, &gGLXMinorVersion)) {
gGLXMajorVersion = 0;
gGLXMinorVersion = 0;
return false;
}
serverVendor = xQueryServerString(display, screen, GLX_VENDOR);
serverVersionStr = xQueryServerString(display, screen, GLX_VERSION);
if (!GLXVersionCheck(1, 1))
// Not possible to query for extensions.
return false;
extensionsStr = xQueryExtensionsString(display, screen);
LibrarySymbolLoader::SymLoadStruct *sym13;
if (!GLXVersionCheck(1, 3)) {
// Even if we don't have 1.3, we might have equivalent extensions
// (as on the Intel X server).
if (!HasExtension(extensionsStr, "GLX_SGIX_fbconfig")) {
return false;
}
sym13 = symbols13_ext;
} else {
sym13 = symbols13;
}
if (!LibrarySymbolLoader::LoadSymbols(mOGLLibrary, sym13)) {
NS_WARNING("Couldn't find required entry point in OpenGL shared library");
return false;
}
LibrarySymbolLoader::SymLoadStruct *sym14;
if (!GLXVersionCheck(1, 4)) {
// Even if we don't have 1.4, we might have equivalent extensions
// (as on the Intel X server).
if (!HasExtension(extensionsStr, "GLX_ARB_get_proc_address")) {
return false;
}
sym14 = symbols14_ext;
} else {
sym14 = symbols14;
}
if (!LibrarySymbolLoader::LoadSymbols(mOGLLibrary, sym14)) {
NS_WARNING("Couldn't find required entry point in OpenGL shared library");
return false;
}
if (HasExtension(extensionsStr, "GLX_EXT_texture_from_pixmap") &&
LibrarySymbolLoader::LoadSymbols(mOGLLibrary, symbols_texturefrompixmap,
(LibrarySymbolLoader::PlatformLookupFunction)&xGetProcAddress))
{
mHasTextureFromPixmap = true;
} else {
NS_WARNING("Texture from pixmap disabled");
}
if (HasExtension(extensionsStr, "GLX_ARB_create_context_robustness") &&
LibrarySymbolLoader::LoadSymbols(mOGLLibrary, symbols_robustness)) {
mHasRobustness = true;
}
gIsATI = serverVendor && DoesStringMatch(serverVendor, "ATI");
gIsChromium = (serverVendor &&
DoesStringMatch(serverVendor, "Chromium")) ||
(serverVersionStr &&
DoesStringMatch(serverVersionStr, "Chromium"));
mInitialized = true;
return true;
}
bool
GLXLibrary::SupportsTextureFromPixmap(gfxASurface* aSurface)
{
if (!EnsureInitialized()) {
return false;
}
if (aSurface->GetType() != gfxASurface::SurfaceTypeXlib || !mHasTextureFromPixmap) {
return false;
}
return true;
}
GLXPixmap
GLXLibrary::CreatePixmap(gfxASurface* aSurface)
{
if (!SupportsTextureFromPixmap(aSurface)) {
return 0;
}
int attribs[] = { GLX_DOUBLEBUFFER, False,
GLX_DRAWABLE_TYPE, GLX_PIXMAP_BIT,
GLX_BIND_TO_TEXTURE_RGBA_EXT, True,
None };
int numFormats;
Display *display = DefaultXDisplay();
int xscreen = DefaultScreen(display);
ScopedXFree<GLXFBConfig> cfg(xChooseFBConfig(display,
xscreen,
attribs,
&numFormats));
if (!cfg) {
return 0;
}
NS_ABORT_IF_FALSE(numFormats > 0,
"glXChooseFBConfig() failed to match our requested format and violated its spec (!)");
gfxXlibSurface *xs = static_cast<gfxXlibSurface*>(aSurface);
int pixmapAttribs[] = { GLX_TEXTURE_TARGET_EXT, GLX_TEXTURE_2D_EXT,
GLX_TEXTURE_FORMAT_EXT, GLX_TEXTURE_FORMAT_RGBA_EXT,
None};
GLXPixmap glxpixmap = xCreatePixmap(display,
cfg[0],
xs->XDrawable(),
pixmapAttribs);
return glxpixmap;
}
void
GLXLibrary::DestroyPixmap(GLXPixmap aPixmap)
{
if (!mHasTextureFromPixmap) {
return;
}
Display *display = DefaultXDisplay();
xDestroyPixmap(display, aPixmap);
}
void
GLXLibrary::BindTexImage(GLXPixmap aPixmap)
{
if (!mHasTextureFromPixmap) {
return;
}
Display *display = DefaultXDisplay();
// Make sure all X drawing to the surface has finished before binding to a texture.
xWaitX();
xBindTexImage(display, aPixmap, GLX_FRONT_LEFT_EXT, NULL);
}
void
GLXLibrary::ReleaseTexImage(GLXPixmap aPixmap)
{
if (!mHasTextureFromPixmap) {
return;
}
Display *display = DefaultXDisplay();
xReleaseTexImage(display, aPixmap, GLX_FRONT_LEFT_EXT);
}
#ifdef DEBUG
static int (*sOldErrorHandler)(Display *, XErrorEvent *);
ScopedXErrorHandler::ErrorEvent sErrorEvent;
static int GLXErrorHandler(Display *display, XErrorEvent *ev)
{
if (!sErrorEvent.mError.error_code) {
sErrorEvent.mError = *ev;
}
return 0;
}
void
GLXLibrary::BeforeGLXCall()
{
if (mDebug) {
sOldErrorHandler = XSetErrorHandler(GLXErrorHandler);
}
}
void
GLXLibrary::AfterGLXCall()
{
if (mDebug) {
XSync(DefaultXDisplay(), False);
if (sErrorEvent.mError.error_code) {
char buffer[2048];
XGetErrorText(DefaultXDisplay(), sErrorEvent.mError.error_code, buffer, sizeof(buffer));
printf_stderr("X ERROR: %s (%i) - Request: %i.%i, Serial: %i",
buffer,
sErrorEvent.mError.error_code,
sErrorEvent.mError.request_code,
sErrorEvent.mError.minor_code,
sErrorEvent.mError.serial);
NS_ABORT();
}
XSetErrorHandler(sOldErrorHandler);
}
}
#define BEFORE_GLX_CALL do { \
sGLXLibrary.BeforeGLXCall(); \
} while (0)
#define AFTER_GLX_CALL do { \
sGLXLibrary.AfterGLXCall(); \
} while (0)
#else
#define BEFORE_GLX_CALL do { } while(0)
#define AFTER_GLX_CALL do { } while(0)
#endif
void
GLXLibrary::xDestroyContext(Display* display, GLXContext context)
{
BEFORE_GLX_CALL;
xDestroyContextInternal(display, context);
AFTER_GLX_CALL;
}
Bool
GLXLibrary::xMakeCurrent(Display* display,
GLXDrawable drawable,
GLXContext context)
{
BEFORE_GLX_CALL;
Bool result = xMakeCurrentInternal(display, drawable, context);
AFTER_GLX_CALL;
return result;
}
GLXContext
GLXLibrary::xGetCurrentContext()
{
BEFORE_GLX_CALL;
GLXContext result = xGetCurrentContextInternal();
AFTER_GLX_CALL;
return result;
}
/* static */ void*
GLXLibrary::xGetProcAddress(const char *procName)
{
BEFORE_GLX_CALL;
void* result = sGLXLibrary.xGetProcAddressInternal(procName);
AFTER_GLX_CALL;
return result;
}
GLXFBConfig*
GLXLibrary::xChooseFBConfig(Display* display,
int screen,
const int *attrib_list,
int *nelements)
{
BEFORE_GLX_CALL;
GLXFBConfig* result = xChooseFBConfigInternal(display, screen, attrib_list, nelements);
AFTER_GLX_CALL;
return result;
}
GLXFBConfig*
GLXLibrary::xGetFBConfigs(Display* display,
int screen,
int *nelements)
{
BEFORE_GLX_CALL;
GLXFBConfig* result = xGetFBConfigsInternal(display, screen, nelements);
AFTER_GLX_CALL;
return result;
}
GLXContext
GLXLibrary::xCreateNewContext(Display* display,
GLXFBConfig config,
int render_type,
GLXContext share_list,
Bool direct)
{
BEFORE_GLX_CALL;
GLXContext result = xCreateNewContextInternal(display, config,
render_type,
share_list, direct);
AFTER_GLX_CALL;
return result;
}
XVisualInfo*
GLXLibrary::xGetVisualFromFBConfig(Display* display,
GLXFBConfig config)
{
BEFORE_GLX_CALL;
XVisualInfo* result = xGetVisualFromFBConfigInternal(display, config);
AFTER_GLX_CALL;
return result;
}
int
GLXLibrary::xGetFBConfigAttrib(Display *display,
GLXFBConfig config,
int attribute,
int *value)
{
BEFORE_GLX_CALL;
int result = xGetFBConfigAttribInternal(display, config,
attribute, value);
AFTER_GLX_CALL;
return result;
}
void
GLXLibrary::xSwapBuffers(Display *display, GLXDrawable drawable)
{
BEFORE_GLX_CALL;
xSwapBuffersInternal(display, drawable);
AFTER_GLX_CALL;
}
const char *
GLXLibrary::xQueryExtensionsString(Display *display,
int screen)
{
BEFORE_GLX_CALL;
const char *result = xQueryExtensionsStringInternal(display, screen);
AFTER_GLX_CALL;
return result;
}
const char *
GLXLibrary::xGetClientString(Display *display,
int screen)
{
BEFORE_GLX_CALL;
const char *result = xGetClientStringInternal(display, screen);
AFTER_GLX_CALL;
return result;
}
const char *
GLXLibrary::xQueryServerString(Display *display,
int screen, int name)
{
BEFORE_GLX_CALL;
const char *result = xQueryServerStringInternal(display, screen, name);
AFTER_GLX_CALL;
return result;
}
GLXPixmap
GLXLibrary::xCreatePixmap(Display *display,
GLXFBConfig config,
Pixmap pixmap,
const int *attrib_list)
{
BEFORE_GLX_CALL;
GLXPixmap result = xCreatePixmapInternal(display, config,
pixmap, attrib_list);
AFTER_GLX_CALL;
return result;
}
GLXPixmap
GLXLibrary::xCreateGLXPixmapWithConfig(Display *display,
GLXFBConfig config,
Pixmap pixmap)
{
BEFORE_GLX_CALL;
GLXPixmap result = xCreateGLXPixmapWithConfigInternal(display, config, pixmap);
AFTER_GLX_CALL;
return result;
}
void
GLXLibrary::xDestroyPixmap(Display *display, GLXPixmap pixmap)
{
BEFORE_GLX_CALL;
xDestroyPixmapInternal(display, pixmap);
AFTER_GLX_CALL;
}
GLXContext
GLXLibrary::xCreateContext(Display *display,
XVisualInfo *vis,
GLXContext shareList,
Bool direct)
{
BEFORE_GLX_CALL;
GLXContext result = xCreateContextInternal(display, vis, shareList, direct);
AFTER_GLX_CALL;
return result;
}
Bool
GLXLibrary::xQueryVersion(Display *display,
int *major,
int *minor)
{
BEFORE_GLX_CALL;
Bool result = xQueryVersionInternal(display, major, minor);
AFTER_GLX_CALL;
return result;
}
void
GLXLibrary::xBindTexImage(Display *display,
GLXDrawable drawable,
int buffer,
const int *attrib_list)
{
BEFORE_GLX_CALL;
xBindTexImageInternal(display, drawable, buffer, attrib_list);
AFTER_GLX_CALL;
}
void
GLXLibrary::xReleaseTexImage(Display *display,
GLXDrawable drawable,
int buffer)
{
BEFORE_GLX_CALL;
xReleaseTexImageInternal(display, drawable, buffer);
AFTER_GLX_CALL;
}
void
GLXLibrary::xWaitGL()
{
BEFORE_GLX_CALL;
xWaitGLInternal();
AFTER_GLX_CALL;
}
void
GLXLibrary::xWaitX()
{
BEFORE_GLX_CALL;
xWaitXInternal();
AFTER_GLX_CALL;
}
GLXContext
GLXLibrary::xCreateContextAttribs(Display* display,
GLXFBConfig config,
GLXContext share_list,
Bool direct,
const int* attrib_list)
{
BEFORE_GLX_CALL;
GLXContext result = xCreateContextAttribsInternal(display,
config,
share_list,
direct,
attrib_list);
AFTER_GLX_CALL;
return result;
}
GLXLibrary sGLXLibrary;
class GLContextGLX : public GLContext
{
public:
static already_AddRefed<GLContextGLX>
CreateGLContext(const ContextFormat& format,
Display *display,
GLXDrawable drawable,
GLXFBConfig cfg,
XVisualInfo *vinfo,
GLContextGLX *shareContext,
bool deleteDrawable,
gfxXlibSurface *pixmap = nsnull)
{
int db = 0, err;
err = sGLXLibrary.xGetFBConfigAttrib(display, cfg,
GLX_DOUBLEBUFFER, &db);
if (GLX_BAD_ATTRIBUTE != err) {
#ifdef DEBUG
printf("[GLX] FBConfig is %sdouble-buffered\n", db ? "" : "not ");
#endif
}
GLXContext context;
nsRefPtr<GLContextGLX> glContext;
bool error;
ScopedXErrorHandler xErrorHandler;
TRY_AGAIN_NO_SHARING:
error = false;
if (sGLXLibrary.HasRobustness()) {
int attrib_list[] = {
LOCAL_GL_CONTEXT_FLAGS_ARB, LOCAL_GL_CONTEXT_ROBUST_ACCESS_BIT_ARB,
LOCAL_GL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB, LOCAL_GL_LOSE_CONTEXT_ON_RESET_ARB,
0,
};
context = sGLXLibrary.xCreateContextAttribs(display,
cfg,
shareContext ? shareContext->mContext : NULL,
True,
attrib_list);
} else {
context = sGLXLibrary.xCreateNewContext(display,
cfg,
GLX_RGBA_TYPE,
shareContext ? shareContext->mContext : NULL,
True);
}
if (context) {
glContext = new GLContextGLX(format,
shareContext,
display,
drawable,
context,
deleteDrawable,
db,
pixmap);
if (!glContext->Init())
error = true;
} else {
error = true;
}
error |= xErrorHandler.SyncAndGetError(display);
if (error) {
if (shareContext) {
shareContext = nsnull;
goto TRY_AGAIN_NO_SHARING;
}
NS_WARNING("Failed to create GLXContext!");
glContext = nsnull; // note: this must be done while the graceful X error handler is set,
// because glxMakeCurrent can give a GLXBadDrawable error
}
return glContext.forget();
}
~GLContextGLX()
{
MarkDestroyed();
// see bug 659842 comment 76
#ifdef DEBUG
bool success =
#endif
sGLXLibrary.xMakeCurrent(mDisplay, None, nsnull);
NS_ABORT_IF_FALSE(success,
"glXMakeCurrent failed to release GL context before we call glXDestroyContext!");
sGLXLibrary.xDestroyContext(mDisplay, mContext);
if (mDeleteDrawable) {
sGLXLibrary.xDestroyPixmap(mDisplay, mDrawable);
}
}
GLContextType GetContextType() {
return ContextTypeGLX;
}
bool Init()
{
MakeCurrent();
SetupLookupFunction();
if (!InitWithPrefix("gl", true)) {
return false;
}
return IsExtensionSupported("GL_EXT_framebuffer_object");
}
bool MakeCurrentImpl(bool aForce = false)
{
bool succeeded = true;
// With the ATI FGLRX driver, glxMakeCurrent is very slow even when the context doesn't change.
// (This is not the case with other drivers such as NVIDIA).
// So avoid calling it more than necessary. Since GLX documentation says that:
// "glXGetCurrentContext returns client-side information.
// It does not make a round trip to the server."
// I assume that it's not worth using our own TLS slot here.
if (aForce || sGLXLibrary.xGetCurrentContext() != mContext) {
succeeded = sGLXLibrary.xMakeCurrent(mDisplay, mDrawable, mContext);
NS_ASSERTION(succeeded, "Failed to make GL context current!");
}
return succeeded;
}
bool SetupLookupFunction()
{
mLookupFunc = (PlatformLookupFunction)&GLXLibrary::xGetProcAddress;
return true;
}
void *GetNativeData(NativeDataType aType)
{
switch(aType) {
case NativeGLContext:
return mContext;
case NativeThebesSurface:
return mPixmap;
default:
return nsnull;
}
}
bool IsDoubleBuffered()
{
return mDoubleBuffered;
}
bool SupportsRobustness()
{
return sGLXLibrary.HasRobustness();
}
bool SwapBuffers()
{
if (!mDoubleBuffered)
return false;
sGLXLibrary.xSwapBuffers(mDisplay, mDrawable);
sGLXLibrary.xWaitGL();
return true;
}
bool TextureImageSupportsGetBackingSurface()
{
return sGLXLibrary.HasTextureFromPixmap();
}
virtual already_AddRefed<TextureImage>
CreateTextureImage(const nsIntSize& aSize,
TextureImage::ContentType aContentType,
GLenum aWrapMode,
bool aUseNearestFilter = false);
private:
friend class GLContextProviderGLX;
GLContextGLX(const ContextFormat& aFormat,
GLContext *aShareContext,
Display *aDisplay,
GLXDrawable aDrawable,
GLXContext aContext,
bool aDeleteDrawable,
bool aDoubleBuffered,
gfxXlibSurface *aPixmap)
: GLContext(aFormat, aDeleteDrawable ? true : false, aShareContext),
mContext(aContext),
mDisplay(aDisplay),
mDrawable(aDrawable),
mDeleteDrawable(aDeleteDrawable),
mDoubleBuffered(aDoubleBuffered),
mPixmap(aPixmap)
{ }
GLXContext mContext;
Display *mDisplay;
GLXDrawable mDrawable;
bool mDeleteDrawable;
bool mDoubleBuffered;
nsRefPtr<gfxXlibSurface> mPixmap;
};
class TextureImageGLX : public TextureImage
{
friend already_AddRefed<TextureImage>
GLContextGLX::CreateTextureImage(const nsIntSize&,
ContentType,
GLenum,
bool);
public:
virtual ~TextureImageGLX()
{
mGLContext->MakeCurrent();
mGLContext->fDeleteTextures(1, &mTexture);
sGLXLibrary.DestroyPixmap(mPixmap);
}
virtual gfxASurface* BeginUpdate(nsIntRegion& aRegion)
{
mInUpdate = true;
return mUpdateSurface;
}
virtual void EndUpdate()
{
mInUpdate = false;
}
virtual bool DirectUpdate(gfxASurface* aSurface, const nsIntRegion& aRegion, const nsIntPoint& aFrom)
{
nsRefPtr<gfxContext> ctx = new gfxContext(mUpdateSurface);
gfxUtils::ClipToRegion(ctx, aRegion);
ctx->SetSource(aSurface, aFrom);
ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
ctx->Paint();
return true;
}
virtual void BindTexture(GLenum aTextureUnit)
{
mGLContext->fActiveTexture(aTextureUnit);
mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
sGLXLibrary.BindTexImage(mPixmap);
mGLContext->fActiveTexture(LOCAL_GL_TEXTURE0);
}
virtual void ReleaseTexture()
{
sGLXLibrary.ReleaseTexImage(mPixmap);
}
virtual already_AddRefed<gfxASurface> GetBackingSurface()
{
nsRefPtr<gfxASurface> copy = mUpdateSurface;
return copy.forget();
}
virtual bool InUpdate() const { return mInUpdate; }
virtual GLuint GetTextureID() {
return mTexture;
};
private:
TextureImageGLX(GLuint aTexture,
const nsIntSize& aSize,
GLenum aWrapMode,
ContentType aContentType,
GLContext* aContext,
gfxASurface* aSurface,
GLXPixmap aPixmap)
: TextureImage(aSize, aWrapMode, aContentType)
, mGLContext(aContext)
, mUpdateSurface(aSurface)
, mPixmap(aPixmap)
, mInUpdate(false)
, mTexture(aTexture)
{
if (aSurface->GetContentType() == gfxASurface::CONTENT_COLOR_ALPHA) {
mShaderType = gl::RGBALayerProgramType;
} else {
mShaderType = gl::RGBXLayerProgramType;
}
}
GLContext* mGLContext;
nsRefPtr<gfxASurface> mUpdateSurface;
GLXPixmap mPixmap;
bool mInUpdate;
GLuint mTexture;
virtual void ApplyFilter()
{
mGLContext->ApplyFilterToBoundTexture(mFilter);
}
};
already_AddRefed<TextureImage>
GLContextGLX::CreateTextureImage(const nsIntSize& aSize,
TextureImage::ContentType aContentType,
GLenum aWrapMode,
bool aUseNearestFilter)
{
if (!TextureImageSupportsGetBackingSurface()) {
return GLContext::CreateTextureImage(aSize,
aContentType,
aWrapMode,
aUseNearestFilter);
}
Display *display = DefaultXDisplay();
int xscreen = DefaultScreen(display);
gfxASurface::gfxImageFormat imageFormat = gfxASurface::FormatFromContent(aContentType);
XRenderPictFormat* xrenderFormat =
gfxXlibSurface::FindRenderFormat(display, imageFormat);
NS_ASSERTION(xrenderFormat, "Could not find a render format for our display!");
nsRefPtr<gfxXlibSurface> surface =
gfxXlibSurface::Create(ScreenOfDisplay(display, xscreen),
xrenderFormat,
gfxIntSize(aSize.width, aSize.height));
NS_ASSERTION(surface, "Failed to create xlib surface!");
if (aContentType == gfxASurface::CONTENT_COLOR_ALPHA) {
nsRefPtr<gfxContext> ctx = new gfxContext(surface);
ctx->SetOperator(gfxContext::OPERATOR_CLEAR);
ctx->Paint();
}
MakeCurrent();
GLXPixmap pixmap = sGLXLibrary.CreatePixmap(surface);
NS_ASSERTION(pixmap, "Failed to create pixmap!");
GLuint texture;
fGenTextures(1, &texture);
fActiveTexture(LOCAL_GL_TEXTURE0);
fBindTexture(LOCAL_GL_TEXTURE_2D, texture);
nsRefPtr<TextureImageGLX> teximage =
new TextureImageGLX(texture, aSize, aWrapMode, aContentType, this, surface, pixmap);
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 GLContextGLX *
GetGlobalContextGLX()
{
return static_cast<GLContextGLX*>(GLContextProviderGLX::GetGlobalContext());
}
static bool
AreCompatibleVisuals(XVisualInfo *one, XVisualInfo *two)
{
if (one->c_class != two->c_class) {
return false;
}
if (one->depth != two->depth) {
return false;
}
if (one->red_mask != two->red_mask ||
one->green_mask != two->green_mask ||
one->blue_mask != two->blue_mask) {
return false;
}
if (one->bits_per_rgb != two->bits_per_rgb) {
return false;
}
return true;
}
already_AddRefed<GLContext>
GLContextProviderGLX::CreateForWindow(nsIWidget *aWidget)
{
if (!sGLXLibrary.EnsureInitialized()) {
return nsnull;
}
// Currently, we take whatever Visual the window already has, and
// try to create an fbconfig for that visual. This isn't
// necessarily what we want in the long run; an fbconfig may not
// be available for the existing visual, or if it is, the GL
// performance might be suboptimal. But using the existing visual
// is a relatively safe intermediate step.
Display *display = (Display*)aWidget->GetNativeData(NS_NATIVE_DISPLAY);
int xscreen = DefaultScreen(display);
Window window = GET_NATIVE_WINDOW(aWidget);
int numConfigs;
ScopedXFree<GLXFBConfig> cfgs;
if (gIsATI || !GLXVersionCheck(1, 3)) {
const int attribs[] = {
GLX_DOUBLEBUFFER, False,
0
};
cfgs = sGLXLibrary.xChooseFBConfig(display,
xscreen,
attribs,
&numConfigs);
} else {
cfgs = sGLXLibrary.xGetFBConfigs(display,
xscreen,
&numConfigs);
}
if (!cfgs) {
NS_WARNING("[GLX] glXGetFBConfigs() failed");
return nsnull;
}
NS_ASSERTION(numConfigs > 0, "No FBConfigs found!");
// XXX the visual ID is almost certainly the GLX_FBCONFIG_ID, so
// we could probably do this first and replace the glXGetFBConfigs
// with glXChooseConfigs. Docs are sparklingly clear as always.
XWindowAttributes widgetAttrs;
if (!XGetWindowAttributes(display, window, &widgetAttrs)) {
NS_WARNING("[GLX] XGetWindowAttributes() failed");
return nsnull;
}
const VisualID widgetVisualID = XVisualIDFromVisual(widgetAttrs.visual);
#ifdef DEBUG
printf("[GLX] widget has VisualID 0x%lx\n", widgetVisualID);
#endif
ScopedXFree<XVisualInfo> vi;
if (gIsATI) {
XVisualInfo vinfo_template;
int nvisuals;
vinfo_template.visual = widgetAttrs.visual;
vinfo_template.visualid = XVisualIDFromVisual(vinfo_template.visual);
vinfo_template.depth = widgetAttrs.depth;
vinfo_template.screen = xscreen;
vi = XGetVisualInfo(display, VisualIDMask|VisualDepthMask|VisualScreenMask,
&vinfo_template, &nvisuals);
NS_ASSERTION(vi && nvisuals == 1, "Could not locate unique matching XVisualInfo for Visual");
}
int matchIndex = -1;
ScopedXFree<XVisualInfo> vinfo;
for (int i = 0; i < numConfigs; i++) {
vinfo = sGLXLibrary.xGetVisualFromFBConfig(display, cfgs[i]);
if (!vinfo) {
continue;
}
if (gIsATI) {
if (AreCompatibleVisuals(vi, vinfo)) {
matchIndex = i;
break;
}
} else {
if (widgetVisualID == vinfo->visualid) {
matchIndex = i;
break;
}
}
}
if (matchIndex == -1) {
NS_WARNING("[GLX] Couldn't find a FBConfig matching widget visual");
return nsnull;
}
GLContextGLX *shareContext = GetGlobalContextGLX();
nsRefPtr<GLContextGLX> glContext = GLContextGLX::CreateGLContext(ContextFormat(ContextFormat::BasicRGB24),
display,
window,
cfgs[matchIndex],
vinfo,
shareContext,
false);
return glContext.forget();
}
static already_AddRefed<GLContextGLX>
CreateOffscreenPixmapContext(const gfxIntSize& aSize,
const ContextFormat& aFormat,
bool aShare)
{
if (!sGLXLibrary.EnsureInitialized()) {
return nsnull;
}
Display *display = DefaultXDisplay();
int xscreen = DefaultScreen(display);
int attribs[] = {
GLX_DOUBLEBUFFER, False,
GLX_DRAWABLE_TYPE, GLX_PIXMAP_BIT,
GLX_X_RENDERABLE, True,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_ALPHA_SIZE, 0,
GLX_DEPTH_SIZE, 0,
0
};
int numConfigs = 0;
ScopedXFree<GLXFBConfig> cfgs;
cfgs = sGLXLibrary.xChooseFBConfig(display,
xscreen,
attribs,
&numConfigs);
if (!cfgs) {
return nsnull;
}
NS_ASSERTION(numConfigs > 0,
"glXChooseFBConfig() failed to match our requested format and violated its spec (!)");
ScopedXFree<XVisualInfo> vinfo;
int chosenIndex = 0;
for (int i = 0; i < numConfigs; ++i) {
int dtype, visid;
if (sGLXLibrary.xGetFBConfigAttrib(display, cfgs[i], GLX_DRAWABLE_TYPE, &dtype) != Success
|| !(dtype & GLX_PIXMAP_BIT))
{
continue;
}
if (sGLXLibrary.xGetFBConfigAttrib(display, cfgs[i], GLX_VISUAL_ID, &visid) != Success
|| visid == 0)
{
continue;
}
vinfo = sGLXLibrary.xGetVisualFromFBConfig(display, cfgs[i]);
if (vinfo) {
chosenIndex = i;
break;
}
}
if (!vinfo) {
NS_WARNING("glXChooseFBConfig() didn't give us any configs with visuals!");
return nsnull;
}
ScopedXErrorHandler xErrorHandler;
GLXPixmap glxpixmap = 0;
bool error = false;
nsRefPtr<gfxXlibSurface> xsurface = gfxXlibSurface::Create(DefaultScreenOfDisplay(display),
vinfo->visual,
gfxIntSize(16, 16));
if (xsurface->CairoStatus() != 0) {
error = true;
goto DONE_CREATING_PIXMAP;
}
// Handle slightly different signature between glXCreatePixmap and
// its pre-GLX-1.3 extension equivalent (though given the ABI, we
// might not need to).
if (GLXVersionCheck(1, 3)) {
glxpixmap = sGLXLibrary.xCreatePixmap(display,
cfgs[chosenIndex],
xsurface->XDrawable(),
NULL);
} else {
glxpixmap = sGLXLibrary.xCreateGLXPixmapWithConfig(display,
cfgs[chosenIndex],
xsurface->
XDrawable());
}
if (glxpixmap == 0) {
error = true;
}
DONE_CREATING_PIXMAP:
nsRefPtr<GLContextGLX> glContext;
bool serverError = xErrorHandler.SyncAndGetError(display);
if (!error && // earlier recorded error
!serverError)
{
glContext = GLContextGLX::CreateGLContext(
aFormat,
display,
glxpixmap,
cfgs[chosenIndex],
vinfo,
aShare ? GetGlobalContextGLX() : nsnull,
true,
xsurface);
}
return glContext.forget();
}
already_AddRefed<GLContext>
GLContextProviderGLX::CreateOffscreen(const gfxIntSize& aSize,
const ContextFormat& aFormat)
{
nsRefPtr<GLContextGLX> glContext =
CreateOffscreenPixmapContext(aSize, aFormat, true);
if (!glContext) {
return nsnull;
}
if (!glContext->GetSharedContext()) {
// no point in returning anything if sharing failed, we can't
// render from this
return nsnull;
}
if (!glContext->ResizeOffscreenFBO(aSize, true)) {
// we weren't able to create the initial
// offscreen FBO, so this is dead
return nsnull;
}
return glContext.forget();
}
already_AddRefed<GLContext>
GLContextProviderGLX::CreateForNativePixmapSurface(gfxASurface *aSurface)
{
if (!sGLXLibrary.EnsureInitialized()) {
return nsnull;
}
if (aSurface->GetType() != gfxASurface::SurfaceTypeXlib) {
NS_WARNING("GLContextProviderGLX::CreateForNativePixmapSurface called with non-Xlib surface");
return nsnull;
}
nsAutoTArray<int, 20> attribs;
#define A1_(_x) do { attribs.AppendElement(_x); } while(0)
#define A2_(_x,_y) do { \
attribs.AppendElement(_x); \
attribs.AppendElement(_y); \
} while(0)
A2_(GLX_DOUBLEBUFFER, False);
A2_(GLX_DRAWABLE_TYPE, GLX_PIXMAP_BIT);
A1_(0);
int numFormats;
Display *display = DefaultXDisplay();
int xscreen = DefaultScreen(display);
ScopedXFree<GLXFBConfig> cfg(sGLXLibrary.xChooseFBConfig(display,
xscreen,
attribs.Elements(),
&numFormats));
if (!cfg) {
return nsnull;
}
NS_ASSERTION(numFormats > 0,
"glXChooseFBConfig() failed to match our requested format and violated its spec (!)");
gfxXlibSurface *xs = static_cast<gfxXlibSurface*>(aSurface);
GLXPixmap glxpixmap = sGLXLibrary.xCreatePixmap(display,
cfg[0],
xs->XDrawable(),
NULL);
nsRefPtr<GLContextGLX> glContext = GLContextGLX::CreateGLContext(ContextFormat(ContextFormat::BasicRGB24),
display,
glxpixmap,
cfg[0],
NULL,
NULL,
false,
xs);
return glContext.forget();
}
static nsRefPtr<GLContext> gGlobalContext;
GLContext *
GLContextProviderGLX::GetGlobalContext()
{
static bool triedToCreateContext = false;
if (!triedToCreateContext && !gGlobalContext) {
triedToCreateContext = true;
gGlobalContext = CreateOffscreenPixmapContext(gfxIntSize(1, 1),
ContextFormat(ContextFormat::BasicRGB24),
false);
if (gGlobalContext)
gGlobalContext->SetIsGlobalSharedContext(true);
}
return gGlobalContext;
}
void
GLContextProviderGLX::Shutdown()
{
gGlobalContext = nsnull;
}
} /* namespace gl */
} /* namespace mozilla */
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