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authorKim Motoyoshi Kalland <kim.kalland@nokia.com>2009-09-07 12:28:44 (GMT)
committerKim Motoyoshi Kalland <kim.kalland@nokia.com>2009-09-07 12:31:46 (GMT)
commitf868eae7d0cd3297e2512b5651747fda689cc848 (patch)
treef78ca72c5692797df5e3c668bc766e9711aceb09 /src/opengl/qglframebufferobject.cpp
parent6765d8a9370ecc39754520660998c4f8dd339e8d (diff)
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Fixed crash in print preview dialog with graphicssystem OpenGL.
Avoid crashing when framebuffer object created in one context is used in a shared context after the original context is destroyed. Task-number: 260874 Reviewed-by: Samuel
Diffstat (limited to 'src/opengl/qglframebufferobject.cpp')
-rw-r--r--src/opengl/qglframebufferobject.cpp35
1 files changed, 18 insertions, 17 deletions
diff --git a/src/opengl/qglframebufferobject.cpp b/src/opengl/qglframebufferobject.cpp
index 94e3930..c50608c 100644
--- a/src/opengl/qglframebufferobject.cpp
+++ b/src/opengl/qglframebufferobject.cpp
@@ -63,7 +63,7 @@ QT_BEGIN_NAMESPACE
extern QImage qt_gl_read_framebuffer(const QSize&, bool, bool);
-#define QGL_FUNC_CONTEXT QGLContext *ctx = d_ptr->ctx;
+#define QGL_FUNC_CONTEXT QGLContextGroup *ctx = d_ptr->ctx;
#define QT_CHECK_GLERROR() \
{ \
@@ -288,7 +288,7 @@ public:
QGLFramebufferObjectFormat format;
uint valid : 1;
QGLFramebufferObject::Attachment fbo_attachment;
- QGLContext *ctx; // for Windows extension ptrs
+ QGLContextGroup *ctx; // for Windows extension ptrs
GLuint previous_fbo;
mutable QPaintEngine *engine;
};
@@ -340,9 +340,10 @@ bool QGLFramebufferObjectPrivate::checkFramebufferStatus() const
void QGLFramebufferObjectPrivate::init(const QSize &sz, QGLFramebufferObject::Attachment attachment,
GLenum texture_target, GLenum internal_format, GLint samples)
{
- ctx = const_cast<QGLContext *>(QGLContext::currentContext());
+ QGLContext *currentContext = const_cast<QGLContext *>(QGLContext::currentContext());
+ ctx = QGLContextPrivate::contextGroup(currentContext);
bool ext_detected = (QGLExtensions::glExtensions & QGLExtensions::FramebufferObject);
- if (!ext_detected || (ext_detected && !qt_resolve_framebufferobject_extensions(ctx)))
+ if (!ext_detected || (ext_detected && !qt_resolve_framebufferobject_extensions(currentContext)))
return;
size = sz;
@@ -466,7 +467,7 @@ void QGLFramebufferObjectPrivate::init(const QSize &sz, QGLFramebufferObject::At
fbo_attachment = QGLFramebufferObject::NoAttachment;
}
- glBindFramebuffer(GL_FRAMEBUFFER_EXT, ctx->d_ptr->current_fbo);
+ glBindFramebuffer(GL_FRAMEBUFFER_EXT, currentContext->d_ptr->current_fbo);
if (!valid) {
if (color_buffer)
glDeleteRenderbuffers(1, &color_buffer);
@@ -736,16 +737,19 @@ QGLFramebufferObject::~QGLFramebufferObject()
delete d->engine;
- if (isValid()
- && (d->ctx == QGLContext::currentContext()
- || qgl_share_reg()->checkSharing(d->ctx, QGLContext::currentContext())))
- {
+ if (isValid()) {
+ const QGLContext *oldContext = QGLContext::currentContext();
+ bool switchContext = !oldContext || QGLContextPrivate::contextGroup(oldContext) != ctx;
+ if (switchContext)
+ const_cast<QGLContext *>(ctx->context())->makeCurrent();
glDeleteTextures(1, &d->texture);
if (d->color_buffer)
glDeleteRenderbuffers(1, &d->color_buffer);
if (d->depth_stencil_buffer)
glDeleteRenderbuffers(1, &d->depth_stencil_buffer);
glDeleteFramebuffers(1, &d->fbo);
+ if (oldContext && switchContext)
+ const_cast<QGLContext *>(oldContext)->makeCurrent();
}
}
@@ -897,7 +901,7 @@ QImage QGLFramebufferObject::toImage() const
bool wasBound = isBound();
if (!wasBound)
const_cast<QGLFramebufferObject *>(this)->bind();
- QImage image = qt_gl_read_framebuffer(d->size, d->ctx->format().alpha(), true);
+ QImage image = qt_gl_read_framebuffer(d->size, format().textureTarget() != GL_RGB, true);
if (!wasBound)
const_cast<QGLFramebufferObject *>(this)->release();
@@ -969,16 +973,14 @@ bool QGLFramebufferObject::hasOpenGLFramebufferObjects()
*/
void QGLFramebufferObject::drawTexture(const QRectF &target, GLuint textureId, GLenum textureTarget)
{
- Q_D(QGLFramebufferObject);
- d->ctx->drawTexture(target, textureId, textureTarget);
+ const_cast<QGLContext *>(QGLContext::currentContext())->drawTexture(target, textureId, textureTarget);
}
#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
/*! \internal */
void QGLFramebufferObject::drawTexture(const QRectF &target, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget)
{
- Q_D(QGLFramebufferObject);
- d->ctx->drawTexture(target, textureId, textureTarget);
+ const_cast<QGLContext *>(QGLContext::currentContext())->drawTexture(target, textureId, textureTarget);
}
#endif
@@ -994,8 +996,7 @@ void QGLFramebufferObject::drawTexture(const QRectF &target, QMacCompatGLuint te
*/
void QGLFramebufferObject::drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget)
{
- Q_D(QGLFramebufferObject);
- d->ctx->drawTexture(point, textureId, textureTarget);
+ const_cast<QGLContext *>(QGLContext::currentContext())->drawTexture(point, textureId, textureTarget);
}
#ifdef Q_MAC_COMPAT_GL_FUNCTIONS
@@ -1100,7 +1101,7 @@ QGLFramebufferObject::Attachment QGLFramebufferObject::attachment() const
bool QGLFramebufferObject::isBound() const
{
Q_D(const QGLFramebufferObject);
- return d->ctx->d_ptr->current_fbo == d->fbo;
+ return QGLContext::currentContext()->d_ptr->current_fbo == d->fbo;
}
/*!