diff --git a/src/opengl/qglbuffer.cpp b/src/opengl/qglbuffer.cpp index 08aa37e5aa8..200ee2499ee 100644 --- a/src/opengl/qglbuffer.cpp +++ b/src/opengl/qglbuffer.cpp @@ -343,7 +343,7 @@ bool QGLBuffer::read(int offset, void *data, int count) { #if !defined(QT_OPENGL_ES) Q_D(QGLBuffer); - if (!d->funcs->hasOpenGLFeature(QOpenGLFunctions::Buffers) || !d->guard->id()) + if (!d->funcs->hasOpenGLFeature(QOpenGLFunctions::Buffers) || !d->guard->id() || !d->funcs->d()->GetBufferSubData) return false; while (d->funcs->glGetError() != GL_NO_ERROR) ; // Clear error state. d->funcs->glGetBufferSubData(d->type, offset, count, data);