Hello, I am creating a double-buffered SDL application. This application
requires that I synchronize buffer swaps to the VBL to avoid tearing and that I
send a signal to the serial port as soon as the display has been updated with
the new frame. Is there any way to know when the buffer swap that I requested
has been executed? A blocking buffer-swap call would suffice for my purposes.
Thank you.
Best, Dan
Hello, I am creating a double-buffered SDL application. This application
requires that I synchronize buffer swaps to the VBL to avoid tearing and that I
send a signal to the serial port as soon as the display has been updated with
the new frame. Is there any way to know when the buffer swap that I requested
has been executed? A blocking buffer-swap call would suffice for my purposes.
Thank you.
It depends on whether you are using OpenGL or not. I am not sure of the
answer for OpenGL. For pure SDL using hardware double buffering, then
the SDL_LockSurface blocks until a swap has occurred and it is safe to
access the back buffer. The SDL_Flip function is not blocking. It just
sets up a swap and returns.
Bob PendletonOn Fri, 2006-09-15 at 19:52 +0000, Daniel Rizzuto wrote:
Best, Dan
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