swapbuffer, call in second thread ??

OpenGL OpenGL: Advanced Coding
1

hi all.
in windows2000, i found the swapbuffer…
are called not in main thread but another
thread.
i need to be notified when
the swaping operation complete.
so i can continue render new frame
to backbuffer.
how can i???

2

Hi
I think the nice way is to make a boolean variable true or false.
I mean when u start drawing set
bRendering = TRUE
& when rendering is complete set
bRendering = FALSE

define & declare this variable as
volatile BOOL bRendering=TRUE;

call swap buffers if rendering is FALSE otherwise don’t call it. Thats it

3

hi,
i just wanna to know when the rending
complete. see the following codes:

glDrawSomething1(…);
glFinish();
SwapBuffers(hdc);
glDrawSomething2(…);

when call glDrawSomething2(…), i
need be sure the Swapbuffers(hdc) has
complete. because the SwapBuffers(hdc)
call a new thread to copy backbuffer to
front buffer, so i don’t know when it
complete.