Uber-scene-graphs? OpenInventor/Peformer clones? no thanks! This kind of approach might be a bit intimidating at the beginning but the extra effort will be well invested, as you will soon be able to create your own rendering pipeline, your own shading model, your own post processing effects or something that no one has even conceived yet!

Instead with Visualization Library the user has transparent access to all the switches and buttons provided by OpenGL from a friendly C++ object oriented framework. This approach usually tends to simplify the life of the casual user as many details are hidden inside the 'black box'. Many rendering engines implement their functionalities as a 'black box'. Learning from this lesson, mantaining compatibility even with OpenGL 1.1 class hardware is considered a top priority for Visualization Library. Probably the single most important factor that made OpenGL the de-facto standard in the 3D graphics industry has been its ability to evolve and to provide always new features with a consistent API, while at the same time maintaining backwards compatibility. Visualization Library architecture has been designed from the ground up to take full advantage of the most modern OpenGL 4.x features like OpenGL Shading Language, Vertex and Pixel Buffer Objects, Framebuffer Objects, Occlusion Culling, Multiple Render Targets, Geometry Shaders, Tessellation Shaders, Geometry Instancing, true double precision GPU computation and so on, thus providing all the necessary tools to create extraordinary 3D graphics applications.

While retaining full compatibility with OpenGL 1.1 class hardware, this ensures that Visualization Library size is kept to a minimum and that only the most efficient rendering paths are used. For this reasons many legacy OpenGL features like edge flags, accumulation buffers, feedback mode, the inefficient immediate mode commands etc. Visualization Library development has been heavily inspired by the idea of simplification promoted by OpenGL 3.x/4.x and OpenGL ES 2.0. Visualization Library exposes OpenGL functionalities in a manner that reproduces as closely as possible the original OpenGL semantics and adopts as closely as possible the OpenGL wording and conventions. Moreover, Visualization Library has been designed to seamlessly work side by side with other rendering frameworks, thus allowing a gradual and risk-free transition to Visualization Library. Visualization Library is simple to integrate into your framework, you do not need to adapt your own framework to Visualization Library. VL is a low-level, fast, fine-grained C++ middleware on top of OpenGL. Every aspect of Visualization Library has been developed keeping in mind these important principles: The first and most important feature of Visualization Library is surely its simple and straightforward design.

Accumulation buffer opengl es 2.0