GXClearVCacheMetric

C Specification

#include <revolution/gx.h>

void GXClearVCacheMetric( void );

Arguments

None

Return Values

None

Description

The Graphics Processor (GP) can count many internal events that give detailed information on performance. This function clears the Vertex Cache performance counter by sending a special clear token via the graphics FIFO.

To set the metric for the counter call GXSetVCacheMetric. To read the counter value, call to GXReadVCacheMetric.

Example

u32 chk, miss, stall;

GXSetVCacheMetric(GX_VC_ALL);
GXClearVCacheMetric();

// Draw Object(s)

// wait until object drawn
GXSetDrawSync(0xbeef);
while (0xbeef != GXReadDrawSync())
    ;

GXReadVCacheMetric(&chk, &miss, &stall);

OSReport("Vertex Cache miss rate:  %f\n", (f32)miss/(f32)chk);

See Also

GXReadMemMetric
GXClearMemMetric
GXReadPixMetric
GXClearPixMetric
GXReadGPMetric
GXSetGPMetric
GXClearGPMetric

Revision History

03/01/2006 Initial version