Posted by gouessej on Dec 07, 2023; 2:53pm
URL: https://forum.jogamp.org/Performance-tp4043199p4043202.html

Hello

I have no ready-to-use guide about that subject but feel free to ask questions.

At first, you must know your intended audience and have a clear idea of your software's minimum requirements, it will help you to determine where you start and where you stop. For example, if you have to support OpenGL 1.4, you'll be able to switch from immediate mode to retained mode by using VBOs but you won't be able to use VAOs.

Moreover, you have to use the right type of VBOs depending on the frequency of changes, a static VBOs is enough when you rarely or never change a geometry.

After that, avoid useless (re)creations of VBOs (see glBufferData), it's the typical newbie's mistake, don't push or upload the data when it isn't needed. If you're really a beginner with VBOs, start by tinkering a tiny example in order to understand the basic principles.

You'll have to understand how to use glGenBuffers, glBindBuffer, glBufferData, glDrawArrays and glDrawElements. I advise you to focus on examples illustrating how to use VBOs alone.