3 files changed, 18 insertions, 4 deletions
diff --git a/src/opengl/qglframebufferobject.cpp b/src/opengl/qglframebufferobject.cpp
index 094f675..f15aa01 100644
--- a/src/opengl/qglframebufferobject.cpp
+++ b/src/opengl/qglframebufferobject.cpp
@@ -299,10 +299,21 @@ bool QGLFramebufferObjectFormat::operator!=(const QGLFramebufferObjectFormat& ot
     return !(*this == other);
 }
 
-void QGLFBOGLPaintDevice::setFBO(QGLFramebufferObject* f)
+void QGLFBOGLPaintDevice::setFBO(QGLFramebufferObject* f,
+                                 QGLFramebufferObject::Attachment attachment)
 {
     fbo = f;
     m_thisFBO = fbo->d_func()->fbo; // This shouldn't be needed
+
+    // The context that the fbo was created in may not have depth
+    // and stencil buffers, but the fbo itself might.
+    fboFormat = QGLContext::currentContext()->format();
+    if (attachment == QGLFramebufferObject::CombinedDepthStencil) {
+        fboFormat.setDepth(true);
+        fboFormat.setStencil(true);
+    } else if (attachment == QGLFramebufferObject::Depth) {
+        fboFormat.setDepth(true);
+    }
 }
 
 void QGLFBOGLPaintDevice::ensureActiveTarget()
@@ -395,7 +406,7 @@ void QGLFramebufferObjectPrivate::init(QGLFramebufferObject *q, const QSize &sz,
     glGenFramebuffers(1, &fbo);
     glBindFramebuffer(GL_FRAMEBUFFER_EXT, fbo);
 
-    glDevice.setFBO(q);
+    glDevice.setFBO(q, attachment);
 
     QT_CHECK_GLERROR();
     // init texture
diff --git a/src/opengl/qglframebufferobject_p.h b/src/opengl/qglframebufferobject_p.h
index c11c496..f80209d 100644
--- a/src/opengl/qglframebufferobject_p.h
+++ b/src/opengl/qglframebufferobject_p.h
@@ -110,15 +110,18 @@ public:
     virtual QPaintEngine* paintEngine() const {return fbo->paintEngine();}
     virtual QSize size() const {return fbo->size();}
     virtual QGLContext* context() const {return const_cast<QGLContext *>(QGLContext::currentContext());}
+    virtual QGLFormat format() const {return fboFormat;}
     virtual void ensureActiveTarget();
     virtual void beginPaint();
     virtual void endPaint();
 
-    void setFBO(QGLFramebufferObject* f);
+    void setFBO(QGLFramebufferObject* f,
+                QGLFramebufferObject::Attachment attachment);
 
 private:
     bool wasBound;
     QGLFramebufferObject* fbo;
+    QGLFormat fboFormat;
 };
 
 class QGLFramebufferObjectPrivate
diff --git a/src/opengl/qglpaintdevice_p.h b/src/opengl/qglpaintdevice_p.h
index 66b24a9..1e7ba8d 100644
--- a/src/opengl/qglpaintdevice_p.h
+++ b/src/opengl/qglpaintdevice_p.h
@@ -73,7 +73,7 @@ public:
     virtual void endPaint();
 
     virtual QGLContext* context() const = 0;
-    QGLFormat format() const;
+    virtual QGLFormat format() const;
     virtual QSize size() const = 0;
 
     // returns the QGLPaintDevice for the given QPaintDevice