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.TH SDL_GL_GetSwapInterval 3 "SDL 3.1.0" "SDL" "SDL3 FUNCTIONS"
.SH NAME
SDL_GL_GetSwapInterval \- Get the swap interval for the current OpenGL context\[char46]
.SH SYNOPSIS
.nf
.B #include \(dqSDL3/SDL.h\(dq
.PP
.BI "int SDL_GL_GetSwapInterval(int *interval);
.fi
.SH DESCRIPTION
If the system can't determine the swap interval, or there isn't a valid
current context, this function will set *interval to 0 as a safe default\[char46]

.SH FUNCTION PARAMETERS
.TP
.I interval
Output interval value\[char46] 0 if there is no vertical retrace synchronization, 1 if the buffer swap is synchronized with the vertical retrace, and -1 if late swaps happen immediately instead of waiting for the next retrace
.SH RETURN VALUE
Returns 0 on success or a negative error code on failure; call

.BR SDL_GetError
() for more information\[char46]

.SH AVAILABILITY
This function is available since SDL 3\[char46]0\[char46]0\[char46]

.SH SEE ALSO
.BR SDL_GL_SetSwapInterval (3)