opengl resources and context sharing

[mercurio7891]

hi, is it possible for resources to be shared?? suppose I have one render context created on thread 1, and in thread 2 I attempt to do a glBindBuffer command etc. would it work??

regards

[Groogy]

I think you can, though I'd wait for Laurent to answer.

[Laurent]

All OpenGL contexts in SFML are shared.

[mercurio7891]

does that mean i need a dummy context in my worker thread for the sharing to work?? e.g

Code: [Select]


Thread1 (main thread):
create sfml window and main context
set main context as active
lock
draw vbo_one
unlock

Thread2 (worker thread):
create a dummy context and set it as active //is this step neccessary for sharing?
lock
update vbo_two and stuff
unlock


would it work if i don't have a dummy context? i.e just start calling gl calls on the worker thread, without creating a dummy context or setting any active context.

regards

[Laurent]

would it work if i don't have a dummy context? i.e just start calling gl calls on the worker thread, without creating a dummy context or setting any active context.

No, you always need an active context to call OpenGL functions.

[mercurio7891]

ahh thanks, i was hoping i could get away without the dummy context, as I was lazy and don't want to maintain a similar states across all context.

regards