Currently to pass a texture (or renderbuffer) to OpenCL for some fast crunching on the GPU, and to pass the result back to OpenGL on NVidia, I’m doing:
<< generate with OpenGL >>
<< crunch with OpenCL >>
<< process with OpenGL >>
Any word on when ARB_cl_event will be supported on NVidia?
(Usage example: here on Slide 37)