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PgWaitVSync(), PgWaitVSyncCx()

Wait for vertical synchronization

Synopsis:

void PgWaitVSync( void );

void PgWaitVSyncCx( void *dc );

Arguments:

dc

PgWaitVSyncCx() only. A void pointer to any type of draw context. Examples of draw contexts are:

a PhDrawContext_t returned by PhDCCreate()
a PmMemoryContext_t returned by PmMemCreateMC()
a PpPrintContext_t returned by PpCreatePC()
a PdOffscreenContext_t returned by PdCreateOffscreenContext()

Library:

ph

Description:

These functions insert a “wait for vertical sync” tag into the drawstream. The driver waits until a vertical refresh has started before continuing to render the draw stream.

PgWaitVSync() works on the current draw context, while you can specify the draw context for PgWaitVSyncCx().

Examples:

PgSetFillColor(Pg_RED);
PgWaitVSync();
PgDrawIRect(0,0,99,99,Pg_DRAW_FILL);
PgSetFillColor(Pg_BLACK);
PgDrawIRect(9,9,89,89,Pg_DRAW_FILL);
PgFlush();  // Wait for Vsync, then draw 2 rects

Classification:

Photon

Safety:
Interrupt handler	No
Signal handler	No
Thread	No