Using the OpenGL Extensions

wglQuerySwapGroupNV(),

glxQuerySwapGroupNV()

This call returns the swap group number and barrier number to which the device context is bound.

Function

B00L QuerySwapGroupNV (HDC hDC, GLuint *group,

 

GLuint *barrier);

 

 

Parameters In

hDC - Device context for the frame lock card, or a

 

window residing on the frame lock card.

 

 

Parameters Out

*group - The group number to which the device

 

context is bound, or assigned.

 

*barrier - The barrier number to which the device

 

context is bound.

 

 

Return Values

TRUE: Success

 

FALSE: Failure. In this case *group and *barrier are

 

undefined.

 

 

wglQueryMaxSwapGroupsNV(),

glxQueryMaxSwapGroupsNV()

This call returns the maximum number of swap groups and swap barriers that are supported by the implementation.

Function

B00L QueryMaxSwapGroupsNV (HDC hDC, GLuint

 

*maxGroup, GLuint *maxBarrier);

 

 

Parameters In

hDC - Device context for the frame lock card, or a

 

window residing on the frame lock card.

 

 

Parameters Out

*maxGroups - The maximum group number

 

supported by the implementation.

 

*maxBarriers - The maximum barrier number

 

supported by the implementation.

 

 

Return Values

TRUE: Success

 

FALSE: Failure. In this case *maxGroups and

 

*maxBarriers are undefined.

 

 

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Nvidia 2 manual WglQuerySwapGroupNV GlxQuerySwapGroupNV, WglQueryMaxSwapGroupsNV GlxQueryMaxSwapGroupsNV