Hi.
Yesterday, I downloaded and installed the current AMD Catalyst driver version 13.9 and removed 13.4.
I started my application(game) that I am currently working on, and the computation I perform using a shared GL context has slowed down drastically!
I reinstalled 13.4, and everything is working just fine again.
Specs:
Win 7 x64
AMD 8 core CPU
Sapphire 7850 oc.
The thread with the shared GL context basically does isolated work. It just copies the result, a vertex/index buffer(VBO), back to the main render thread's (main) context for rendering the result. The copy is done on the gpu. I am using an OpenGL 3.3 context and I do a lot transform feedback! The contexts are created using wglCreateContextAttribsARB.
When the compute thread(shared GL context thread) is working on a chunk of data, the application is totally slow. When it does noting, i.e. it has no work to do, the application runs normal. As said, this is just for 13.9 driver suite. With 13.4, everything works just fine.
Any idea what is possibly happening here?