What does this do ?
glTexImage2d
glActiveTexture(); ??
What is the difference ?
glBindImageTexture
glBindTexture
Sampler vs Image2d ?
What are textures really ? are they just memory buffer
A gem about GPGPU https://developer.nvidia.com/gpugems/gpugems/part-vi-beyond-triangles/chapter-37-toolkit-computation-gpus