void QGLPixmapData::ensureCreated() const
{
if (!m_dirty)
return;
m_dirty = false;
if (nativeImageHandleProvider && !nativeImageHandle)
const_cast<QGLPixmapData *>(this)->createFromNativeImageHandleProvider();
QGLShareContextScope ctx(qt_gl_share_widget()->context());
m_ctx = ctx;
#ifdef QT_SYMBIAN_SUPPORTS_SGIMAGE
if (m_sgImage) {
qt_resolve_eglimage_gl_extensions(ctx); // ensure initialized
bool textureIsBound = false;
GLuint newTextureId;
EGLint imgAttr[] = { EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, EGL_NONE };
EGLImageKHR image = QEgl::eglCreateImageKHR(QEgl::display()
, EGL_NO_CONTEXT
, EGL_NATIVE_PIXMAP_KHR
, (EGLClientBuffer)m_sgImage
, imgAttr);
glGenTextures(1, &newTextureId);
glBindTexture( GL_TEXTURE_2D, newTextureId);
if (image != EGL_NO_IMAGE_KHR) {
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, image);
GLint err = glGetError();
if (err == GL_NO_ERROR)
textureIsBound = true;
QEgl::eglDestroyImageKHR(QEgl::display(), image);
}
if (textureIsBound) {
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
m_texture.id = newTextureId;
m_texture.boundPixmap = const_cast<QGLPixmapData*>(this);
QGLSgImageTextureCleanup::cleanupForContext(m_ctx)->insert(m_texture.id, const_cast<QGLPixmapData*>(this));
} else {
qWarning("QGLPixmapData: Failed to create texture from a SgImage image of size %dx%d", w, h);
glDeleteTextures(1, &newTextureId);
}
}
#endif
}
void QMeeGoExtensions::initialize()
{
QGLContext *ctx = (QGLContext *) QGLContext::currentContext();
qt_resolve_eglimage_gl_extensions(ctx);
if (QEgl::hasExtension("EGL_NOK_image_shared")) {
qDebug("MeegoGraphics: found EGL_NOK_image_shared");
_eglQueryImageNOK = (eglQueryImageNOKFunc) eglGetProcAddress("eglQueryImageNOK");
_eglCreateSharedImageNOK = (eglCreateSharedImageNOKFunc) eglGetProcAddress("eglCreateSharedImageNOK");
_eglDestroySharedImageNOK = (eglDestroySharedImageNOKFunc) eglGetProcAddress("eglDestroySharedImageNOK");
_eglLockSurfaceKHR = (eglLockSurfaceKHRFunc) eglGetProcAddress("eglLockSurfaceKHR");
_eglUnlockSurfaceKHR = (eglUnlockSurfaceKHRFunc) eglGetProcAddress("eglUnlockSurfaceKHR");
Q_ASSERT(_eglQueryImageNOK && _eglCreateSharedImageNOK && _eglDestroySharedImageNOK);
hasImageShared = true;
}
if (QEgl::hasExtension("EGL_NOK_surface_scaling")) {
qDebug("MeegoGraphics: found EGL_NOK_surface_scaling");
_eglSetSurfaceScalingNOK = (eglSetSurfaceScalingNOKFunc) eglGetProcAddress("eglSetSurfaceScalingNOK");
Q_ASSERT(_eglSetSurfaceScalingNOK);
hasSurfaceScaling = true;
}
if (QEgl::hasExtension("EGL_KHR_lock_surface2")) {
qDebug("MeegoGraphics: found EGL_KHR_lock_surface2");
_eglLockSurfaceKHR = (eglLockSurfaceKHRFunc) eglGetProcAddress("eglLockSurfaceKHR");
_eglUnlockSurfaceKHR = (eglUnlockSurfaceKHRFunc) eglGetProcAddress("eglUnlockSurfaceKHR");
Q_ASSERT(_eglLockSurfaceKHR && _eglUnlockSurfaceKHR);
hasLockSurface = true;
}
if (QEgl::hasExtension("EGL_KHR_fence_sync")) {
qDebug("MeegoGraphics: found EGL_KHR_fence_sync");
_eglCreateSyncKHR = (eglCreateSyncKHRFunc) eglGetProcAddress("eglCreateSyncKHR");
_eglDestroySyncKHR = (eglDestroySyncKHRFunc) eglGetProcAddress("eglDestroySyncKHR");
_eglClientWaitSyncKHR = (eglClientWaitSyncKHRFunc) eglGetProcAddress("eglClientWaitSyncKHR");
_eglGetSyncAttribKHR = (eglGetSyncAttribKHRFunc) eglGetProcAddress("eglGetSyncAttribKHR");
Q_ASSERT(_eglCreateSyncKHR && _eglDestroySyncKHR && _eglClientWaitSyncKHR && _eglGetSyncAttribKHR);
hasFenceSync = true;
}
}
QGLTexture *QGLContextPrivate::bindTextureFromNativePixmap(QPixmap *pixmap, const qint64 key,
QGLContext::BindOptions options)
{
Q_Q(QGLContext);
// The EGL texture_from_pixmap has no facility to invert the y coordinate
if (!(options & QGLContext::CanFlipNativePixmapBindOption))
return 0;
static bool checkedForTFP = false;
static bool haveTFP = false;
static bool checkedForEglImageTFP = false;
static bool haveEglImageTFP = false;
if (!checkedForEglImageTFP) {
checkedForEglImageTFP = true;
// We need to be able to create an EGLImage from a native pixmap, which was split
// into a separate EGL extension, EGL_KHR_image_pixmap. It is possible to have
// eglCreateImageKHR & eglDestroyImageKHR without support for pixmaps, so we must
// check we have the EGLImage from pixmap functionality.
if (QEgl::hasExtension("EGL_KHR_image") || QEgl::hasExtension("EGL_KHR_image_pixmap")) {
// Being able to create an EGLImage from a native pixmap is also pretty useless
// without the ability to bind that EGLImage as a texture, which is provided by
// the GL_OES_EGL_image extension, which we try to resolve here:
haveEglImageTFP = qt_resolve_eglimage_gl_extensions(q);
if (haveEglImageTFP)
qDebug("Found EGL_KHR_image_pixmap & GL_OES_EGL_image extensions (preferred method)!");
}
}
if (!checkedForTFP) {
// Check for texture_from_pixmap egl extension
checkedForTFP = true;
if (QEgl::hasExtension("EGL_NOKIA_texture_from_pixmap") ||
QEgl::hasExtension("EGL_EXT_texture_from_pixmap"))
{
qDebug("Found texture_from_pixmap EGL extension!");
haveTFP = true;
}
}
if (!haveTFP && !haveEglImageTFP)
return 0;
QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(pixmap->data_ptr().data());
Q_ASSERT(pixmapData->classId() == QPixmapData::X11Class);
bool hasAlpha = pixmapData->hasAlphaChannel();
bool pixmapHasValidSurface = false;
bool textureIsBound = false;
GLuint textureId;
glGenTextures(1, &textureId);
glBindTexture(GL_TEXTURE_2D, textureId);
if (haveTFP && pixmapData->gl_surface &&
hasAlpha == (pixmapData->flags & QX11PixmapData::GlSurfaceCreatedWithAlpha))
{
pixmapHasValidSurface = true;
}
// If we already have a valid EGL surface for the pixmap, we should use it
if (pixmapHasValidSurface) {
EGLBoolean success;
success = eglBindTexImage(QEgl::display(), (EGLSurface)pixmapData->gl_surface, EGL_BACK_BUFFER);
if (success == EGL_FALSE) {
qWarning() << "eglBindTexImage() failed:" << QEgl::errorString();
eglDestroySurface(QEgl::display(), (EGLSurface)pixmapData->gl_surface);
pixmapData->gl_surface = (void*)EGL_NO_SURFACE;
} else
textureIsBound = true;
}
// If the pixmap doesn't already have a valid surface, try binding it via EGLImage
// first, as going through EGLImage should be faster and better supported:
if (!textureIsBound && haveEglImageTFP) {
EGLImageKHR eglImage;
EGLint attribs[] = {
EGL_IMAGE_PRESERVED_KHR, EGL_TRUE,
EGL_NONE
};
eglImage = QEgl::eglCreateImageKHR(QEgl::display(), EGL_NO_CONTEXT, EGL_NATIVE_PIXMAP_KHR,
(EGLClientBuffer)QEgl::nativePixmap(pixmap), attribs);
QGLContext* ctx = q;
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, eglImage);
GLint err = glGetError();
if (err == GL_NO_ERROR)
textureIsBound = true;
// Once the egl image is bound, the texture becomes a new sibling image and we can safely
// destroy the EGLImage we created for the pixmap:
if (eglImage != EGL_NO_IMAGE_KHR)
QEgl::eglDestroyImageKHR(QEgl::display(), eglImage);
}
if (!textureIsBound && haveTFP) {
// Check to see if the surface is still valid
if (pixmapData->gl_surface &&
hasAlpha != (pixmapData->flags & QX11PixmapData::GlSurfaceCreatedWithAlpha))
{
// Surface is invalid!
destroyGlSurfaceForPixmap(pixmapData);
}
if (pixmapData->gl_surface == 0) {
EGLConfig config = QEgl::defaultConfig(QInternal::Pixmap,
QEgl::OpenGL,
hasAlpha ? QEgl::Translucent : QEgl::NoOptions);
pixmapData->gl_surface = (void*)QEgl::createSurface(pixmap, config);
if (pixmapData->gl_surface == (void*)EGL_NO_SURFACE)
return false;
}
EGLBoolean success;
success = eglBindTexImage(QEgl::display(), (EGLSurface)pixmapData->gl_surface, EGL_BACK_BUFFER);
if (success == EGL_FALSE) {
qWarning() << "eglBindTexImage() failed:" << QEgl::errorString();
eglDestroySurface(QEgl::display(), (EGLSurface)pixmapData->gl_surface);
pixmapData->gl_surface = (void*)EGL_NO_SURFACE;
haveTFP = false; // If TFP isn't working, disable it's use
} else
textureIsBound = true;
}
QGLTexture *texture = 0;
if (textureIsBound) {
texture = new QGLTexture(q, textureId, GL_TEXTURE_2D, options);
pixmapData->flags |= QX11PixmapData::InvertedWhenBoundToTexture;
// We assume the cost of bound pixmaps is zero
QGLTextureCache::instance()->insert(q, key, texture, 0);
glBindTexture(GL_TEXTURE_2D, textureId);
} else
glDeleteTextures(1, &textureId);
return texture;
}