Posted by gouessej on Apr 22, 2015; 12:38pm
URL: https://forum.jogamp.org/VBO-Performance-Misunderstanding-tp4034319p4034360.html

Hi

I'm glad to see that your frame rate is higher. glMapBuffer*/glUnmapBuffer is really useful to reduce the memory footprint on the CPU side because you don't have to keep a direct NIO buffer allocated in the native memory of the JVM for each VBO to make a transfer. The performance of glBufferSubData vs glMapBuffer*/glUnmapBuffer depends on the size of the updated data too.