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| author | Laszlo Agocs <laszlo.agocs@digia.com> | 2014-09-08 11:46:21 +0200 |
|---|---|---|
| committer | Sean Harmer <sean.harmer@kdab.com> | 2014-09-08 20:35:19 +0200 |
| commit | 267eb25151ce8d1d4d9abf04b9204afa9977b723 (patch) | |
| tree | 1279bb8fe98917383bc76243a68f68206d91a2fe | |
| parent | f3cee50216b066dc204ab4482d329f4ff988b1e2 (diff) | |
Enhance the VAO docs
Make it clear that the class is usable regardless of the OpenGL version
the app is targeting. It may just do nothing.
Change-Id: I50e68a46e36ef1f4694016311af93c6f8719ce4f
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
| -rw-r--r-- | src/gui/opengl/qopenglvertexarrayobject.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/gui/opengl/qopenglvertexarrayobject.cpp b/src/gui/opengl/qopenglvertexarrayobject.cpp index 3b106fecf5..c24254756b 100644 --- a/src/gui/opengl/qopenglvertexarrayobject.cpp +++ b/src/gui/opengl/qopenglvertexarrayobject.cpp @@ -386,6 +386,16 @@ QOpenGLVertexArrayObject::~QOpenGLVertexArrayObject() that supports vertex array objects current for this function to succeed. Returns \c true if the OpenGL vertex array object was successfully created. + + When the return value is \c false, vertex array object support is not available. This + is not an error: on systems with OpenGL 2.x or OpenGL ES 2.0 vertex array objects may + not be supported. The application is free to continue execution in this case, but it + then has to be prepared to operate in a VAO-less manner too. This means that instead + of merely calling bind(), the value of isCreated() must be checked and the vertex + arrays has to be initialized in the traditional way when there is no vertex array + object present. + + \sa isCreated() */ bool QOpenGLVertexArrayObject::create() { |